Support for the DENX M28 SoM

Signed-off-by Marek Vasut <[email protected]>

Cc Andy Fleming <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 arch/arm/include/asm/arch-mx28/sys_proto.h |    2 +
 drivers/mmc/Makefile                       |    1 +
 drivers/mmc/mxsmmc.c                       |  351 ++++++++++++++++++++++++++++
 3 files changed, 354 insertions(+), 0 deletions(-)
 create mode 100644 drivers/mmc/mxsmmc.c

arch/arm/include/asm/arch-mx28/sys_proto.h +2 -0

index a262c05..a226ea4 100644
@@ -27,4 +27,6 @@ int mx28_reset_block(struct mx28_register *reg);
 int mx28_wait_mask_set(struct mx28_register *reg, uint32_t mask, int timeout);
 int mx28_wait_mask_clr(struct mx28_register *reg, uint32_t mask, int timeout);
 
+int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int));
+
 #endif	/* __MX28_H__ */

drivers/mmc/Makefile +1 -0

index 9f9db75..506f1d6 100644
@@ -36,6 +36,7 @@ COBJS-$(CONFIG_MMC_SPI) += mmc_spi.o
 COBJS-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o
 COBJS-$(CONFIG_MV_SDHCI) += mv_sdhci.o
 COBJS-$(CONFIG_MXC_MMC) += mxcmmc.o
+COBJS-$(CONFIG_MXS_MMC) += mxsmmc.o
 COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
 COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o
 COBJS-$(CONFIG_PXA_MMC_GENERIC) += pxa_mmc_gen.o

drivers/mmc/mxsmmc.c new file +341 -0

new file mode 100644
index 0000000..2a9949e
@@ -0,0 +1,351 @@
+/*
+ * Freescale i.MX28 SSP MMC driver
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Based on code from LTIB:
+ * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
+ * Terry Lv
+ *
+ * Copyright 2007, Freescale Semiconductor, Inc
+ * Andy Fleming
+ *
+ * Based vaguely on the pxa mmc code:
+ * (C) Copyright 2003
+ * Kyle Harris, Nexus Technologies, Inc. kharris at nexus-tech.net
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+
+struct mxsmmc_priv {
+	int			id;
+	struct mx28_ssp_regs	*regs;
+	uint32_t		clkseq_bypass;
+	uint32_t		*clkctrl_ssp;
+	uint32_t		buswidth;
+	int			(*mmc_is_wp)(int);
+};
+
+#define	MXSMMC_MAX_TIMEOUT	10000
+
+/*
+ * Sends a command out on the bus.  Takes the mmc pointer,
+ * a command pointer, and an optional data pointer.
+ */
+static int
+mxsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
+{
+	struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv;
+	struct mx28_ssp_regs *ssp_regs = priv->regs;
+	uint32_t reg;
+	int timeout;
+	uint32_t data_count;
+	uint32_t *data_ptr;
+	uint32_t ctrl0;
+
+	debug("MMC%d: CMD%d\n", mmc->block_dev.dev, cmd->cmdidx);
+
+	/* Check bus busy */
+	timeout = MXSMMC_MAX_TIMEOUT;
+	while (--timeout) {
+		udelay(1000);
+		reg = readl(&ssp_regs->hw_ssp_status);
+		if (!(reg &
+			(SSP_STATUS_BUSY | SSP_STATUS_DATA_BUSY |
+			SSP_STATUS_CMD_BUSY))) {
+			break;
+		}
+	}
+
+	if (!timeout) {
+		printf("MMC%d: Bus busy timeout!\n", mmc->block_dev.dev);
+		return TIMEOUT;
+	}
+
+	/* See if card is present */
+	if (readl(&ssp_regs->hw_ssp_status) & SSP_STATUS_CARD_DETECT) {
+		printf("MMC%d: No card detected!\n", mmc->block_dev.dev);
+		return NO_CARD_ERR;
+	}
+
+	/* Start building CTRL0 contents */
+	ctrl0 = priv->buswidth;
+
+	/* Set up command */
+	if (!(cmd->resp_type & MMC_RSP_CRC))
+		ctrl0 |= SSP_CTRL0_IGNORE_CRC;
+	if (cmd->resp_type & MMC_RSP_PRESENT)	/* Need to get response */
+		ctrl0 |= SSP_CTRL0_GET_RESP;
+	if (cmd->resp_type & MMC_RSP_136)	/* It's a 136 bits response */
+		ctrl0 |= SSP_CTRL0_LONG_RESP;
+
+	/* Command index */
+	reg = readl(&ssp_regs->hw_ssp_cmd0);
+	reg &= ~(SSP_CMD0_CMD_MASK | SSP_CMD0_APPEND_8CYC);
+	reg |= cmd->cmdidx << SSP_CMD0_CMD_OFFSET;
+	if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
+		reg |= SSP_CMD0_APPEND_8CYC;
+	writel(reg, &ssp_regs->hw_ssp_cmd0);
+
+	/* Command argument */
+	writel(cmd->cmdarg, &ssp_regs->hw_ssp_cmd1);
+
+	/* Set up data */
+	if (data) {
+		/* READ or WRITE */
+		if (data->flags & MMC_DATA_READ) {
+			ctrl0 |= SSP_CTRL0_READ;
+		} else if (priv->mmc_is_wp(mmc->block_dev.dev)) {
+			printf("MMC%d: Can not write a locked card!\n",
+				mmc->block_dev.dev);
+			return UNUSABLE_ERR;
+		}
+
+		ctrl0 |= SSP_CTRL0_DATA_XFER;
+		reg = ((data->blocks - 1) <<
+			SSP_BLOCK_SIZE_BLOCK_COUNT_OFFSET) |
+			((ffs(data->blocksize) - 1) <<
+			SSP_BLOCK_SIZE_BLOCK_SIZE_OFFSET);
+		writel(reg, &ssp_regs->hw_ssp_block_size);
+
+		reg = data->blocksize * data->blocks;
+		writel(reg, &ssp_regs->hw_ssp_xfer_size);
+	}
+
+	/* Kick off the command */
+	ctrl0 |= SSP_CTRL0_WAIT_FOR_IRQ | SSP_CTRL0_ENABLE | SSP_CTRL0_RUN;
+	writel(ctrl0, &ssp_regs->hw_ssp_ctrl0);
+
+	/* Wait for the command to complete */
+	timeout = MXSMMC_MAX_TIMEOUT;
+	while (--timeout) {
+		udelay(1000);
+		reg = readl(&ssp_regs->hw_ssp_status);
+		if (!(reg & SSP_STATUS_CMD_BUSY))
+			break;
+	}
+
+	if (!timeout) {
+		printf("MMC%d: Command %d busy\n",
+			mmc->block_dev.dev, cmd->cmdidx);
+		return TIMEOUT;
+	}
+
+	/* Check command timeout */
+	if (reg & SSP_STATUS_RESP_TIMEOUT) {
+		printf("MMC%d: Command %d timeout (status 0x%08x)\n",
+			mmc->block_dev.dev, cmd->cmdidx, reg);
+		return TIMEOUT;
+	}
+
+	/* Check command errors */
+	if (reg & (SSP_STATUS_RESP_CRC_ERR | SSP_STATUS_RESP_ERR)) {
+		printf("MMC%d: Command %d error (status 0x%08x)!\n",
+			mmc->block_dev.dev, cmd->cmdidx, reg);
+		return COMM_ERR;
+	}
+
+	/* Copy response to response buffer */
+	if (cmd->resp_type & MMC_RSP_136) {
+		cmd->response[3] = readl(&ssp_regs->hw_ssp_sdresp0);
+		cmd->response[2] = readl(&ssp_regs->hw_ssp_sdresp1);
+		cmd->response[1] = readl(&ssp_regs->hw_ssp_sdresp2);
+		cmd->response[0] = readl(&ssp_regs->hw_ssp_sdresp3);
+	} else
+		cmd->response[0] = readl(&ssp_regs->hw_ssp_sdresp0);
+
+	/* Return if no data to process */
+	if (!data)
+		return 0;
+
+	/* Process the data */
+	data_count = data->blocksize * data->blocks;
+	timeout = MXSMMC_MAX_TIMEOUT;
+	if (data->flags & MMC_DATA_READ) {
+		data_ptr = (uint32_t *)data->dest;
+		while (data_count && --timeout) {
+			reg = readl(&ssp_regs->hw_ssp_status);
+			if (!(reg & SSP_STATUS_FIFO_EMPTY)) {
+				*data_ptr++ = readl(&ssp_regs->hw_ssp_data);
+				data_count -= 4;
+				timeout = MXSMMC_MAX_TIMEOUT;
+			} else
+				udelay(1000);
+		}
+	} else {
+		data_ptr = (uint32_t *)data->src;
+		timeout *= 100;
+		while (data_count && --timeout) {
+			reg = readl(&ssp_regs->hw_ssp_status);
+			if (!(reg & SSP_STATUS_FIFO_FULL)) {
+				writel(*data_ptr++, &ssp_regs->hw_ssp_data);
+				data_count -= 4;
+				timeout = MXSMMC_MAX_TIMEOUT;
+			} else
+				udelay(1000);
+		}
+	}
+
+	if (!timeout) {
+		printf("MMC%d: Data timeout with command %d (status 0x%08x)!\n",
+			mmc->block_dev.dev, cmd->cmdidx, reg);
+		return COMM_ERR;
+	}
+
+	/* Check data errors */
+	reg = readl(&ssp_regs->hw_ssp_status);
+	if (reg &
+		(SSP_STATUS_TIMEOUT | SSP_STATUS_DATA_CRC_ERR |
+		SSP_STATUS_FIFO_OVRFLW | SSP_STATUS_FIFO_UNDRFLW)) {
+		printf("MMC%d: Data error with command %d (status 0x%08x)!\n",
+			mmc->block_dev.dev, cmd->cmdidx, reg);
+		return COMM_ERR;
+	}
+
+	return 0;
+}
+
+static void mxsmmc_set_ios(struct mmc *mmc)
+{
+	struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv;
+	struct mx28_ssp_regs *ssp_regs = priv->regs;
+
+	/* Set the clock speed */
+	if (mmc->clock)
+		mx28_set_ssp_busclock(priv->id, mmc->clock / 1000);
+
+	switch (mmc->bus_width) {
+	case 1:
+		priv->buswidth = SSP_CTRL0_BUS_WIDTH_ONE_BIT;
+		break;
+	case 4:
+		priv->buswidth = SSP_CTRL0_BUS_WIDTH_FOUR_BIT;
+		break;
+	case 8:
+		priv->buswidth = SSP_CTRL0_BUS_WIDTH_EIGHT_BIT;
+		break;
+	}
+
+	/* Set the bus width */
+	clrsetbits_le32(&ssp_regs->hw_ssp_ctrl0,
+			SSP_CTRL0_BUS_WIDTH_MASK, priv->buswidth);
+
+	debug("MMC%d: Set %d bits bus width\n",
+		mmc->block_dev.dev, mmc->bus_width);
+}
+
+static int mxsmmc_init(struct mmc *mmc)
+{
+	struct mxsmmc_priv *priv = (struct mxsmmc_priv *)mmc->priv;
+	struct mx28_ssp_regs *ssp_regs = priv->regs;
+
+	/* Reset SSP */
+	mx28_reset_block(&ssp_regs->hw_ssp_ctrl0_reg);
+
+	/* 8 bits word length in MMC mode */
+	clrsetbits_le32(&ssp_regs->hw_ssp_ctrl1,
+		SSP_CTRL1_SSP_MODE_MASK | SSP_CTRL1_WORD_LENGTH_MASK,
+		SSP_CTRL1_SSP_MODE_SD_MMC | SSP_CTRL1_WORD_LENGTH_EIGHT_BITS);
+
+	/* Set initial bit clock 400 KHz */
+	mx28_set_ssp_busclock(priv->id, 400);
+
+	/* Send initial 74 clock cycles (185 us @ 400 KHz)*/
+	writel(SSP_CMD0_CONT_CLKING_EN, &ssp_regs->hw_ssp_cmd0_set);
+	udelay(200);
+	writel(SSP_CMD0_CONT_CLKING_EN, &ssp_regs->hw_ssp_cmd0_clr);
+
+	return 0;
+}
+
+int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int))
+{
+	struct mx28_clkctrl_regs *clkctrl_regs =
+		(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
+	struct mmc *mmc = NULL;
+	struct mxsmmc_priv *priv = NULL;
+
+	mmc = malloc(sizeof(struct mmc));
+	if (!mmc)
+		return -ENOMEM;
+
+	priv = malloc(sizeof(struct mxsmmc_priv));
+	if (!priv) {
+		free(mmc);
+		return -ENOMEM;
+	}
+
+	priv->mmc_is_wp = wp;
+	priv->id = id;
+	switch (id) {
+	case 0:
+		priv->regs = (struct mx28_ssp_regs *)MXS_SSP0_BASE;
+		priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP0;
+		priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp0;
+		break;
+	case 1:
+		priv->regs = (struct mx28_ssp_regs *)MXS_SSP1_BASE;
+		priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP1;
+		priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp1;
+		break;
+	case 2:
+		priv->regs = (struct mx28_ssp_regs *)MXS_SSP2_BASE;
+		priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP2;
+		priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp2;
+		break;
+	case 3:
+		priv->regs = (struct mx28_ssp_regs *)MXS_SSP3_BASE;
+		priv->clkseq_bypass = CLKCTRL_CLKSEQ_BYPASS_SSP3;
+		priv->clkctrl_ssp = &clkctrl_regs->hw_clkctrl_ssp3;
+		break;
+	}
+
+	sprintf(mmc->name, "MXS MMC");
+	mmc->send_cmd = mxsmmc_send_cmd;
+	mmc->set_ios = mxsmmc_set_ios;
+	mmc->init = mxsmmc_init;
+	mmc->priv = priv;
+
+	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+	mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
+			 MMC_MODE_HS_52MHz | MMC_MODE_HS;
+
+	/*
+	 * SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
+	 * SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)),

Signed-off-by Marek Vasut <[email protected]>

Cc Ben Warren <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 drivers/net/fec_mxc.c |   44 ++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 42 insertions(+), 2 deletions(-)

drivers/net/fec_mxc.c +39 -2

index 0c0c7cd..b05a4c0 100644
@@ -42,6 +42,14 @@ DECLARE_GLOBAL_DATA_PTR;
 #define	CONFIG_FEC_XCV_TYPE	MII100
 #endif
 
+/*
+ * The i.MX28 operates with packets in big endian. We need to swap them before
+ * sending and after receiving.
+ */
+#ifdef	CONFIG_MX28
+#define	CONFIG_FEC_MXC_SWAP_PACKET
+#endif
+
 #undef DEBUG
 
 struct nbuf {

@@ -51,6 +59,32 @@ struct nbuf {
 	uint8_t head[16];	/**< MAC header(6 + 6 + 2) + 2(aligned) */
 };
 
+#ifdef	CONFIG_FEC_MXC_SWAP_PACKET
+static void swap_packet(uint32_t *packet, int length)
+{
+	int i;
+
+	for (i = 0; i < DIV_ROUND_UP(length, 4); i++)
+		packet[i] = __swab32(packet[i]);
+}
+#endif
+
+/*
+ * The i.MX28 has two ethernet interfaces, but they are not equal.
+ * Only the first one can access the MDIO bus.
+ */
+#ifdef	CONFIG_MX28
+static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec)
+{
+	return (struct ethernet_regs *)MXS_ENET0_BASE;
+}
+#else
+static inline struct ethernet_regs *fec_miiphy_fec_to_eth(struct fec_priv *fec)
+{
+	return fec->eth;
+}
+#endif
+
 /*
  * MII-interface related functions
  */

@@ -59,7 +93,7 @@ static int fec_miiphy_read(const char *dev, uint8_t phyAddr, uint8_t regAddr,
 {
 	struct eth_device *edev = eth_get_dev_by_name(dev);
 	struct fec_priv *fec = (struct fec_priv *)edev->priv;
-	struct ethernet_regs *eth = fec->eth;
+	struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec);
 
 	uint32_t reg;		/* convenient holder for the PHY register */
 	uint32_t phy;		/* convenient holder for the PHY */

@@ -117,7 +151,7 @@ static int fec_miiphy_write(const char *dev, uint8_t phyAddr, uint8_t regAddr,
 {
 	struct eth_device *edev = eth_get_dev_by_name(dev);
 	struct fec_priv *fec = (struct fec_priv *)edev->priv;
-	struct ethernet_regs *eth = fec->eth;
+	struct ethernet_regs *eth = fec_miiphy_fec_to_eth(fec);
 
 	uint32_t reg;		/* convenient holder for the PHY register */
 	uint32_t phy;		/* convenient holder for the PHY */

@@ -572,6 +606,9 @@ static int fec_send(struct eth_device *dev, volatile void* packet, int length)
 	 * Note: We are always using the first buffer for transmission,
 	 * the second will be empty and only used to stop the DMA engine
 	 */
+#ifdef	CONFIG_FEC_MXC_SWAP_PACKET
+	swap_packet((uint32_t *)packet, length);
+#endif
 	writew(length, &fec->tbd_base[fec->tbd_index].data_length);
 	writel((uint32_t)packet, &fec->tbd_base[fec->tbd_index].data_pointer);
 	/*

Taken from Linux kernel with minor modifications:

commit bf985969e27b507f734435a99df8bf745a3dbb2b

Author: Shawn Guo <[email protected]>
Date:   Mon Dec 20 22:57:43 2010 +0800

ARM: mxs: Add iomux support

Signed-off-by Marek Vasut <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 arch/arm/cpu/arm926ejs/mx28/Makefile        |    2 +-
 arch/arm/cpu/arm926ejs/mx28/iomux.c         |  109 ++++++
 arch/arm/include/asm/arch-mx28/iomux-mx28.h |  537 +++++++++++++++++++++++++++
 arch/arm/include/asm/arch-mx28/iomux.h      |  168 +++++++++
 4 files changed, 815 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/cpu/arm926ejs/mx28/iomux.c
 create mode 100644 arch/arm/include/asm/arch-mx28/iomux-mx28.h
 create mode 100644 arch/arm/include/asm/arch-mx28/iomux.h

arch/arm/cpu/arm926ejs/mx28/Makefile +1 -1

index 98504f9..7845310 100644
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(SOC).o
 
-COBJS	= clock.o mx28.o timer.o
+COBJS	= clock.o mx28.o iomux.o timer.o
 
 SRCS	:= $(START:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))

arch/arm/cpu/arm926ejs/mx28/iomux.c new file +109 -0

new file mode 100644
index 0000000..9ea411f
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2004-2006,2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2008 by Sascha Hauer <[email protected]>
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ *                       <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/imx-regs.h>
+
+#if	defined(CONFIG_MX23)
+#define	DRIVE_OFFSET	0x200
+#define	PULL_OFFSET	0x400
+#elif	defined(CONFIG_MX28)
+#define	DRIVE_OFFSET	0x300
+#define	PULL_OFFSET	0x600
+#else
+#error "Please select CONFIG_MX23 or CONFIG_MX28"
+#endif
+
+/*
+ * configures a single pad in the iomuxer
+ */
+int mxs_iomux_setup_pad(iomux_cfg_t pad)
+{
+	u32 reg, ofs, bp, bm;
+	void *iomux_base = (void *)MXS_PINCTRL_BASE;
+	struct mx28_register *mxs_reg;
+
+	/* muxsel */
+	ofs = 0x100;
+	ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10;
+	bp = PAD_PIN(pad) % 16 * 2;
+	bm = 0x3 << bp;
+	reg = readl(iomux_base + ofs);
+	reg &= ~bm;
+	reg |= PAD_MUXSEL(pad) << bp;
+	writel(reg, iomux_base + ofs);
+
+	/* drive */
+	ofs = DRIVE_OFFSET;
+	ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10;
+	/* mA */
+	if (PAD_MA_VALID(pad)) {
+		bp = PAD_PIN(pad) % 8 * 4;
+		bm = 0x3 << bp;
+		reg = readl(iomux_base + ofs);
+		reg &= ~bm;
+		reg |= PAD_MA(pad) << bp;
+		writel(reg, iomux_base + ofs);
+	}
+	/* vol */
+	if (PAD_VOL_VALID(pad)) {
+		bp = PAD_PIN(pad) % 8 * 4 + 2;
+		mxs_reg = (struct mx28_register *)(iomux_base + ofs);
+		if (PAD_VOL(pad))
+			writel(1 << bp, &mxs_reg->reg_set);
+		else
+			writel(1 << bp, &mxs_reg->reg_clr);
+	}
+
+	/* pull */
+	if (PAD_PULL_VALID(pad)) {
+		ofs = PULL_OFFSET;
+		ofs += PAD_BANK(pad) * 0x10;
+		bp = PAD_PIN(pad);
+		mxs_reg = (struct mx28_register *)(iomux_base + ofs);
+		if (PAD_PULL(pad))
+			writel(1 << bp, &mxs_reg->reg_set);
+		else
+			writel(1 << bp, &mxs_reg->reg_clr);
+	}
+
+	return 0;
+}
+
+int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count)
+{
+	const iomux_cfg_t *p = pad_list;
+	int i;
+	int ret;
+
+	for (i = 0; i < count; i++) {
+		ret = mxs_iomux_setup_pad(*p);
+		if (ret)
+			return ret;
+		p++;
+	}
+
+	return 0;
+}

arch/arm/include/asm/arch-mx28/iomux-mx28.h new file +537 -0

new file mode 100644
index 0000000..b42820d
@@ -0,0 +1,537 @@
+/*
+ * Copyright (C) 2009-2010 Amit Kucheria <[email protected]>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __MACH_IOMUX_MX28_H__
+#define __MACH_IOMUX_MX28_H__
+
+#include <asm/arch/iomux.h>
+
+/*
+ * The naming convention for the pad modes is MX28_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named GPIO_<unit>_<num>
+ * See also iomux.h
+ *
+ *									BANK	PIN	MUX
+ */
+/* MUXSEL_0 */
+#define MX28_PAD_GPMI_D00__GPMI_D0			MXS_IOMUX_PAD_NAKED(0,  0, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D01__GPMI_D1			MXS_IOMUX_PAD_NAKED(0,  1, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D02__GPMI_D2			MXS_IOMUX_PAD_NAKED(0,  2, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D03__GPMI_D3			MXS_IOMUX_PAD_NAKED(0,  3, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D04__GPMI_D4			MXS_IOMUX_PAD_NAKED(0,  4, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D05__GPMI_D5			MXS_IOMUX_PAD_NAKED(0,  5, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D06__GPMI_D6			MXS_IOMUX_PAD_NAKED(0,  6, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_D07__GPMI_D7			MXS_IOMUX_PAD_NAKED(0,  7, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_CE0N__GPMI_CE0N			MXS_IOMUX_PAD_NAKED(0, 16, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_CE1N__GPMI_CE1N			MXS_IOMUX_PAD_NAKED(0, 17, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_CE2N__GPMI_CE2N			MXS_IOMUX_PAD_NAKED(0, 18, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_CE3N__GPMI_CE3N			MXS_IOMUX_PAD_NAKED(0, 19, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RDY0__GPMI_READY0			MXS_IOMUX_PAD_NAKED(0, 20, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RDY1__GPMI_READY1			MXS_IOMUX_PAD_NAKED(0, 21, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RDY2__GPMI_READY2			MXS_IOMUX_PAD_NAKED(0, 22, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RDY3__GPMI_READY3			MXS_IOMUX_PAD_NAKED(0, 23, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RDN__GPMI_RDN			MXS_IOMUX_PAD_NAKED(0, 24, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_WRN__GPMI_WRN			MXS_IOMUX_PAD_NAKED(0, 25, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_ALE__GPMI_ALE			MXS_IOMUX_PAD_NAKED(0, 26, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_CLE__GPMI_CLE			MXS_IOMUX_PAD_NAKED(0, 27, PAD_MUXSEL_0)
+#define MX28_PAD_GPMI_RESETN__GPMI_RESETN		MXS_IOMUX_PAD_NAKED(0, 28, PAD_MUXSEL_0)
+
+#define MX28_PAD_LCD_D00__LCD_D0			MXS_IOMUX_PAD_NAKED(1,  0, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D01__LCD_D1			MXS_IOMUX_PAD_NAKED(1,  1, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D02__LCD_D2			MXS_IOMUX_PAD_NAKED(1,  2, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D03__LCD_D3			MXS_IOMUX_PAD_NAKED(1,  3, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D04__LCD_D4			MXS_IOMUX_PAD_NAKED(1,  4, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D05__LCD_D5			MXS_IOMUX_PAD_NAKED(1,  5, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D06__LCD_D6			MXS_IOMUX_PAD_NAKED(1,  6, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D07__LCD_D7			MXS_IOMUX_PAD_NAKED(1,  7, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D08__LCD_D8			MXS_IOMUX_PAD_NAKED(1,  8, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D09__LCD_D9			MXS_IOMUX_PAD_NAKED(1,  9, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D10__LCD_D10			MXS_IOMUX_PAD_NAKED(1, 10, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D11__LCD_D11			MXS_IOMUX_PAD_NAKED(1, 11, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D12__LCD_D12			MXS_IOMUX_PAD_NAKED(1, 12, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D13__LCD_D13			MXS_IOMUX_PAD_NAKED(1, 13, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D14__LCD_D14			MXS_IOMUX_PAD_NAKED(1, 14, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D15__LCD_D15			MXS_IOMUX_PAD_NAKED(1, 15, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D16__LCD_D16			MXS_IOMUX_PAD_NAKED(1, 16, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D17__LCD_D17			MXS_IOMUX_PAD_NAKED(1, 17, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D18__LCD_D18			MXS_IOMUX_PAD_NAKED(1, 18, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D19__LCD_D19			MXS_IOMUX_PAD_NAKED(1, 19, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D20__LCD_D20			MXS_IOMUX_PAD_NAKED(1, 20, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D21__LCD_D21			MXS_IOMUX_PAD_NAKED(1, 21, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D22__LCD_D22			MXS_IOMUX_PAD_NAKED(1, 22, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_D23__LCD_D23			MXS_IOMUX_PAD_NAKED(1, 23, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_RD_E__LCD_RD_E			MXS_IOMUX_PAD_NAKED(1, 24, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_WR_RWN__LCD_WR_RWN			MXS_IOMUX_PAD_NAKED(1, 25, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_RS__LCD_RS				MXS_IOMUX_PAD_NAKED(1, 26, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_CS__LCD_CS				MXS_IOMUX_PAD_NAKED(1, 27, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_VSYNC__LCD_VSYNC			MXS_IOMUX_PAD_NAKED(1, 28, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_HSYNC__LCD_HSYNC			MXS_IOMUX_PAD_NAKED(1, 29, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_DOTCLK__LCD_DOTCLK			MXS_IOMUX_PAD_NAKED(1, 30, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_ENABLE__LCD_ENABLE			MXS_IOMUX_PAD_NAKED(1, 31, PAD_MUXSEL_0)
+
+#define MX28_PAD_SSP0_DATA0__SSP0_D0			MXS_IOMUX_PAD_NAKED(2,  0, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA1__SSP0_D1			MXS_IOMUX_PAD_NAKED(2,  1, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA2__SSP0_D2			MXS_IOMUX_PAD_NAKED(2,  2, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA3__SSP0_D3			MXS_IOMUX_PAD_NAKED(2,  3, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA4__SSP0_D4			MXS_IOMUX_PAD_NAKED(2,  4, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA5__SSP0_D5			MXS_IOMUX_PAD_NAKED(2,  5, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA6__SSP0_D6			MXS_IOMUX_PAD_NAKED(2,  6, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DATA7__SSP0_D7			MXS_IOMUX_PAD_NAKED(2,  7, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_CMD__SSP0_CMD			MXS_IOMUX_PAD_NAKED(2,  8, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT		MXS_IOMUX_PAD_NAKED(2,  9, PAD_MUXSEL_0)
+#define MX28_PAD_SSP0_SCK__SSP0_SCK			MXS_IOMUX_PAD_NAKED(2, 10, PAD_MUXSEL_0)
+#define MX28_PAD_SSP1_SCK__SSP1_SCK			MXS_IOMUX_PAD_NAKED(2, 12, PAD_MUXSEL_0)
+#define MX28_PAD_SSP1_CMD__SSP1_CMD			MXS_IOMUX_PAD_NAKED(2, 13, PAD_MUXSEL_0)
+#define MX28_PAD_SSP1_DATA0__SSP1_D0			MXS_IOMUX_PAD_NAKED(2, 14, PAD_MUXSEL_0)
+#define MX28_PAD_SSP1_DATA3__SSP1_D3			MXS_IOMUX_PAD_NAKED(2, 15, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_SCK__SSP2_SCK			MXS_IOMUX_PAD_NAKED(2, 16, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_MOSI__SSP2_CMD			MXS_IOMUX_PAD_NAKED(2, 17, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_MISO__SSP2_D0			MXS_IOMUX_PAD_NAKED(2, 18, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_SS0__SSP2_D3			MXS_IOMUX_PAD_NAKED(2, 19, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_SS1__SSP2_D4			MXS_IOMUX_PAD_NAKED(2, 20, PAD_MUXSEL_0)
+#define MX28_PAD_SSP2_SS2__SSP2_D5			MXS_IOMUX_PAD_NAKED(2, 21, PAD_MUXSEL_0)
+#define MX28_PAD_SSP3_SCK__SSP3_SCK			MXS_IOMUX_PAD_NAKED(2, 24, PAD_MUXSEL_0)
+#define MX28_PAD_SSP3_MOSI__SSP3_CMD			MXS_IOMUX_PAD_NAKED(2, 25, PAD_MUXSEL_0)
+#define MX28_PAD_SSP3_MISO__SSP3_D0			MXS_IOMUX_PAD_NAKED(2, 26, PAD_MUXSEL_0)
+#define MX28_PAD_SSP3_SS0__SSP3_D3			MXS_IOMUX_PAD_NAKED(2, 27, PAD_MUXSEL_0)
+
+#define MX28_PAD_AUART0_RX__AUART0_RX			MXS_IOMUX_PAD_NAKED(3,  0, PAD_MUXSEL_0)
+#define MX28_PAD_AUART0_TX__AUART0_TX			MXS_IOMUX_PAD_NAKED(3,  1, PAD_MUXSEL_0)
+#define MX28_PAD_AUART0_CTS__AUART0_CTS			MXS_IOMUX_PAD_NAKED(3,  2, PAD_MUXSEL_0)
+#define MX28_PAD_AUART0_RTS__AUART0_RTS			MXS_IOMUX_PAD_NAKED(3,  3, PAD_MUXSEL_0)
+#define MX28_PAD_AUART1_RX__AUART1_RX			MXS_IOMUX_PAD_NAKED(3,  4, PAD_MUXSEL_0)
+#define MX28_PAD_AUART1_TX__AUART1_TX			MXS_IOMUX_PAD_NAKED(3,  5, PAD_MUXSEL_0)
+#define MX28_PAD_AUART1_CTS__AUART1_CTS			MXS_IOMUX_PAD_NAKED(3,  6, PAD_MUXSEL_0)
+#define MX28_PAD_AUART1_RTS__AUART1_RTS			MXS_IOMUX_PAD_NAKED(3,  7, PAD_MUXSEL_0)
+#define MX28_PAD_AUART2_RX__AUART2_RX			MXS_IOMUX_PAD_NAKED(3,  8, PAD_MUXSEL_0)
+#define MX28_PAD_AUART2_TX__AUART2_TX			MXS_IOMUX_PAD_NAKED(3,  9, PAD_MUXSEL_0)
+#define MX28_PAD_AUART2_CTS__AUART2_CTS			MXS_IOMUX_PAD_NAKED(3, 10, PAD_MUXSEL_0)
+#define MX28_PAD_AUART2_RTS__AUART2_RTS			MXS_IOMUX_PAD_NAKED(3, 11, PAD_MUXSEL_0)
+#define MX28_PAD_AUART3_RX__AUART3_RX			MXS_IOMUX_PAD_NAKED(3, 12, PAD_MUXSEL_0)
+#define MX28_PAD_AUART3_TX__AUART3_TX			MXS_IOMUX_PAD_NAKED(3, 13, PAD_MUXSEL_0)
+#define MX28_PAD_AUART3_CTS__AUART3_CTS			MXS_IOMUX_PAD_NAKED(3, 14, PAD_MUXSEL_0)
+#define MX28_PAD_AUART3_RTS__AUART3_RTS			MXS_IOMUX_PAD_NAKED(3, 15, PAD_MUXSEL_0)
+#define MX28_PAD_PWM0__PWM_0				MXS_IOMUX_PAD_NAKED(3, 16, PAD_MUXSEL_0)
+#define MX28_PAD_PWM1__PWM_1				MXS_IOMUX_PAD_NAKED(3, 17, PAD_MUXSEL_0)
+#define MX28_PAD_PWM2__PWM_2				MXS_IOMUX_PAD_NAKED(3, 18, PAD_MUXSEL_0)
+#define MX28_PAD_SAIF0_MCLK__SAIF0_MCLK			MXS_IOMUX_PAD_NAKED(3, 20, PAD_MUXSEL_0)
+#define MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK		MXS_IOMUX_PAD_NAKED(3, 21, PAD_MUXSEL_0)
+#define MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK		MXS_IOMUX_PAD_NAKED(3, 22, PAD_MUXSEL_0)
+#define MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0		MXS_IOMUX_PAD_NAKED(3, 23, PAD_MUXSEL_0)
+#define MX28_PAD_I2C0_SCL__I2C0_SCL			MXS_IOMUX_PAD_NAKED(3, 24, PAD_MUXSEL_0)
+#define MX28_PAD_I2C0_SDA__I2C0_SDA			MXS_IOMUX_PAD_NAKED(3, 25, PAD_MUXSEL_0)
+#define MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0		MXS_IOMUX_PAD_NAKED(3, 26, PAD_MUXSEL_0)
+#define MX28_PAD_SPDIF__SPDIF_TX			MXS_IOMUX_PAD_NAKED(3, 27, PAD_MUXSEL_0)
+#define MX28_PAD_PWM3__PWM_3				MXS_IOMUX_PAD_NAKED(3, 28, PAD_MUXSEL_0)
+#define MX28_PAD_PWM4__PWM_4				MXS_IOMUX_PAD_NAKED(3, 29, PAD_MUXSEL_0)
+#define MX28_PAD_LCD_RESET__LCD_RESET			MXS_IOMUX_PAD_NAKED(3, 30, PAD_MUXSEL_0)
+
+#define MX28_PAD_ENET0_MDC__ENET0_MDC			MXS_IOMUX_PAD_NAKED(4,  0, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_MDIO__ENET0_MDIO			MXS_IOMUX_PAD_NAKED(4,  1, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RX_EN__ENET0_RX_EN		MXS_IOMUX_PAD_NAKED(4,  2, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RXD0__ENET0_RXD0			MXS_IOMUX_PAD_NAKED(4,  3, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RXD1__ENET0_RXD1			MXS_IOMUX_PAD_NAKED(4,  4, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TX_CLK__ENET0_TX_CLK		MXS_IOMUX_PAD_NAKED(4,  5, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TX_EN__ENET0_TX_EN		MXS_IOMUX_PAD_NAKED(4,  6, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TXD0__ENET0_TXD0			MXS_IOMUX_PAD_NAKED(4,  7, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TXD1__ENET0_TXD1			MXS_IOMUX_PAD_NAKED(4,  8, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RXD2__ENET0_RXD2			MXS_IOMUX_PAD_NAKED(4,  9, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RXD3__ENET0_RXD3			MXS_IOMUX_PAD_NAKED(4, 10, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TXD2__ENET0_TXD2			MXS_IOMUX_PAD_NAKED(4, 11, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_TXD3__ENET0_TXD3			MXS_IOMUX_PAD_NAKED(4, 12, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_RX_CLK__ENET0_RX_CLK		MXS_IOMUX_PAD_NAKED(4, 13, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_COL__ENET0_COL			MXS_IOMUX_PAD_NAKED(4, 14, PAD_MUXSEL_0)
+#define MX28_PAD_ENET0_CRS__ENET0_CRS			MXS_IOMUX_PAD_NAKED(4, 15, PAD_MUXSEL_0)
+#define MX28_PAD_ENET_CLK__CLKCTRL_ENET			MXS_IOMUX_PAD_NAKED(4, 16, PAD_MUXSEL_0)
+#define MX28_PAD_JTAG_RTCK__JTAG_RTCK			MXS_IOMUX_PAD_NAKED(4, 20, PAD_MUXSEL_0)
+
+#define MX28_PAD_EMI_D00__EMI_DATA0			MXS_IOMUX_PAD_NAKED(5,  0, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D01__EMI_DATA1			MXS_IOMUX_PAD_NAKED(5,  1, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D02__EMI_DATA2			MXS_IOMUX_PAD_NAKED(5,  2, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D03__EMI_DATA3			MXS_IOMUX_PAD_NAKED(5,  3, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D04__EMI_DATA4			MXS_IOMUX_PAD_NAKED(5,  4, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D05__EMI_DATA5			MXS_IOMUX_PAD_NAKED(5,  5, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D06__EMI_DATA6			MXS_IOMUX_PAD_NAKED(5,  6, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D07__EMI_DATA7			MXS_IOMUX_PAD_NAKED(5,  7, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D08__EMI_DATA8			MXS_IOMUX_PAD_NAKED(5,  8, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D09__EMI_DATA9			MXS_IOMUX_PAD_NAKED(5,  9, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D10__EMI_DATA10			MXS_IOMUX_PAD_NAKED(5, 10, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D11__EMI_DATA11			MXS_IOMUX_PAD_NAKED(5, 11, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D12__EMI_DATA12			MXS_IOMUX_PAD_NAKED(5, 12, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D13__EMI_DATA13			MXS_IOMUX_PAD_NAKED(5, 13, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D14__EMI_DATA14			MXS_IOMUX_PAD_NAKED(5, 14, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_D15__EMI_DATA15			MXS_IOMUX_PAD_NAKED(5, 15, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_ODT0__EMI_ODT0			MXS_IOMUX_PAD_NAKED(5, 16, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DQM0__EMI_DQM0			MXS_IOMUX_PAD_NAKED(5, 17, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_ODT1__EMI_ODT1			MXS_IOMUX_PAD_NAKED(5, 18, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DQM1__EMI_DQM1			MXS_IOMUX_PAD_NAKED(5, 19, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK	MXS_IOMUX_PAD_NAKED(5, 20, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_CLK__EMI_CLK			MXS_IOMUX_PAD_NAKED(5, 21, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DQS0__EMI_DQS0			MXS_IOMUX_PAD_NAKED(5, 22, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DQS1__EMI_DQS1			MXS_IOMUX_PAD_NAKED(5, 23, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN		MXS_IOMUX_PAD_NAKED(5, 26, PAD_MUXSEL_0)
+
+#define MX28_PAD_EMI_A00__EMI_ADDR0			MXS_IOMUX_PAD_NAKED(6,  0, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A01__EMI_ADDR1			MXS_IOMUX_PAD_NAKED(6,  1, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A02__EMI_ADDR2			MXS_IOMUX_PAD_NAKED(6,  2, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A03__EMI_ADDR3			MXS_IOMUX_PAD_NAKED(6,  3, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A04__EMI_ADDR4			MXS_IOMUX_PAD_NAKED(6,  4, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A05__EMI_ADDR5			MXS_IOMUX_PAD_NAKED(6,  5, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A06__EMI_ADDR6			MXS_IOMUX_PAD_NAKED(6,  6, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A07__EMI_ADDR7			MXS_IOMUX_PAD_NAKED(6,  7, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A08__EMI_ADDR8			MXS_IOMUX_PAD_NAKED(6,  8, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A09__EMI_ADDR9			MXS_IOMUX_PAD_NAKED(6,  9, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A10__EMI_ADDR10			MXS_IOMUX_PAD_NAKED(6, 10, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A11__EMI_ADDR11			MXS_IOMUX_PAD_NAKED(6, 11, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A12__EMI_ADDR12			MXS_IOMUX_PAD_NAKED(6, 12, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A13__EMI_ADDR13			MXS_IOMUX_PAD_NAKED(6, 13, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_A14__EMI_ADDR14			MXS_IOMUX_PAD_NAKED(6, 14, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_BA0__EMI_BA0			MXS_IOMUX_PAD_NAKED(6, 16, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_BA1__EMI_BA1			MXS_IOMUX_PAD_NAKED(6, 17, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_BA2__EMI_BA2			MXS_IOMUX_PAD_NAKED(6, 18, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_CASN__EMI_CASN			MXS_IOMUX_PAD_NAKED(6, 19, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_RASN__EMI_RASN			MXS_IOMUX_PAD_NAKED(6, 20, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_WEN__EMI_WEN			MXS_IOMUX_PAD_NAKED(6, 21, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_CE0N__EMI_CE0N			MXS_IOMUX_PAD_NAKED(6, 22, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_CE1N__EMI_CE1N			MXS_IOMUX_PAD_NAKED(6, 23, PAD_MUXSEL_0)
+#define MX28_PAD_EMI_CKE__EMI_CKE			MXS_IOMUX_PAD_NAKED(6, 24, PAD_MUXSEL_0)
+
+/* MUXSEL_1 */
+#define MX28_PAD_GPMI_D00__SSP1_D0			MXS_IOMUX_PAD_NAKED(0,  0, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D01__SSP1_D1			MXS_IOMUX_PAD_NAKED(0,  1, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D02__SSP1_D2			MXS_IOMUX_PAD_NAKED(0,  2, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D03__SSP1_D3			MXS_IOMUX_PAD_NAKED(0,  3, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D04__SSP1_D4			MXS_IOMUX_PAD_NAKED(0,  4, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D05__SSP1_D5			MXS_IOMUX_PAD_NAKED(0,  5, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D06__SSP1_D6			MXS_IOMUX_PAD_NAKED(0,  6, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_D07__SSP1_D7			MXS_IOMUX_PAD_NAKED(0,  7, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_CE0N__SSP3_D0			MXS_IOMUX_PAD_NAKED(0, 16, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_CE1N__SSP3_D3			MXS_IOMUX_PAD_NAKED(0, 17, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_CE2N__CAN1_TX			MXS_IOMUX_PAD_NAKED(0, 18, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_CE3N__CAN1_RX			MXS_IOMUX_PAD_NAKED(0, 19, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT		MXS_IOMUX_PAD_NAKED(0, 20, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RDY1__SSP1_CMD			MXS_IOMUX_PAD_NAKED(0, 21, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RDY2__CAN0_TX			MXS_IOMUX_PAD_NAKED(0, 22, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RDY3__CAN0_RX			MXS_IOMUX_PAD_NAKED(0, 23, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RDN__SSP3_SCK			MXS_IOMUX_PAD_NAKED(0, 24, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_WRN__SSP1_SCK			MXS_IOMUX_PAD_NAKED(0, 25, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_ALE__SSP3_D1			MXS_IOMUX_PAD_NAKED(0, 26, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_CLE__SSP3_D2			MXS_IOMUX_PAD_NAKED(0, 27, PAD_MUXSEL_1)
+#define MX28_PAD_GPMI_RESETN__SSP3_CMD			MXS_IOMUX_PAD_NAKED(0, 28, PAD_MUXSEL_1)
+
+#define MX28_PAD_LCD_D03__ETM_DA8			MXS_IOMUX_PAD_NAKED(1,  3, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D04__ETM_DA9			MXS_IOMUX_PAD_NAKED(1,  4, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D08__ETM_DA3			MXS_IOMUX_PAD_NAKED(1,  8, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D09__ETM_DA4			MXS_IOMUX_PAD_NAKED(1,  9, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D20__ENET1_1588_EVENT2_OUT		MXS_IOMUX_PAD_NAKED(1, 20, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D21__ENET1_1588_EVENT2_IN		MXS_IOMUX_PAD_NAKED(1, 21, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D22__ENET1_1588_EVENT3_OUT		MXS_IOMUX_PAD_NAKED(1, 22, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_D23__ENET1_1588_EVENT3_IN		MXS_IOMUX_PAD_NAKED(1, 23, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_RD_E__LCD_VSYNC			MXS_IOMUX_PAD_NAKED(1, 24, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_WR_RWN__LCD_HSYNC			MXS_IOMUX_PAD_NAKED(1, 25, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_RS__LCD_DOTCLK			MXS_IOMUX_PAD_NAKED(1, 26, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_CS__LCD_ENABLE			MXS_IOMUX_PAD_NAKED(1, 27, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_VSYNC__SAIF1_SDATA0		MXS_IOMUX_PAD_NAKED(1, 28, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_HSYNC__SAIF1_SDATA1		MXS_IOMUX_PAD_NAKED(1, 29, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_DOTCLK__SAIF1_MCLK			MXS_IOMUX_PAD_NAKED(1, 30, PAD_MUXSEL_1)
+
+#define MX28_PAD_SSP0_DATA4__SSP2_D0			MXS_IOMUX_PAD_NAKED(2,  4, PAD_MUXSEL_1)
+#define MX28_PAD_SSP0_DATA5__SSP2_D3			MXS_IOMUX_PAD_NAKED(2,  5, PAD_MUXSEL_1)
+#define MX28_PAD_SSP0_DATA6__SSP2_CMD			MXS_IOMUX_PAD_NAKED(2,  6, PAD_MUXSEL_1)
+#define MX28_PAD_SSP0_DATA7__SSP2_SCK			MXS_IOMUX_PAD_NAKED(2,  7, PAD_MUXSEL_1)
+#define MX28_PAD_SSP1_SCK__SSP2_D1			MXS_IOMUX_PAD_NAKED(2, 12, PAD_MUXSEL_1)
+#define MX28_PAD_SSP1_CMD__SSP2_D2			MXS_IOMUX_PAD_NAKED(2, 13, PAD_MUXSEL_1)
+#define MX28_PAD_SSP1_DATA0__SSP2_D6			MXS_IOMUX_PAD_NAKED(2, 14, PAD_MUXSEL_1)
+#define MX28_PAD_SSP1_DATA3__SSP2_D7			MXS_IOMUX_PAD_NAKED(2, 15, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_SCK__AUART2_RX			MXS_IOMUX_PAD_NAKED(2, 16, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_MOSI__AUART2_TX			MXS_IOMUX_PAD_NAKED(2, 17, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_MISO__AUART3_RX			MXS_IOMUX_PAD_NAKED(2, 18, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_SS0__AUART3_TX			MXS_IOMUX_PAD_NAKED(2, 19, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_SS1__SSP2_D1			MXS_IOMUX_PAD_NAKED(2, 20, PAD_MUXSEL_1)
+#define MX28_PAD_SSP2_SS2__SSP2_D2			MXS_IOMUX_PAD_NAKED(2, 21, PAD_MUXSEL_1)
+#define MX28_PAD_SSP3_SCK__AUART4_TX			MXS_IOMUX_PAD_NAKED(2, 24, PAD_MUXSEL_1)
+#define MX28_PAD_SSP3_MOSI__AUART4_RX			MXS_IOMUX_PAD_NAKED(2, 25, PAD_MUXSEL_1)
+#define MX28_PAD_SSP3_MISO__AUART4_RTS			MXS_IOMUX_PAD_NAKED(2, 26, PAD_MUXSEL_1)
+#define MX28_PAD_SSP3_SS0__AUART4_CTS			MXS_IOMUX_PAD_NAKED(2, 27, PAD_MUXSEL_1)
+
+#define MX28_PAD_AUART0_RX__I2C0_SCL			MXS_IOMUX_PAD_NAKED(3,  0, PAD_MUXSEL_1)
+#define MX28_PAD_AUART0_TX__I2C0_SDA			MXS_IOMUX_PAD_NAKED(3,  1, PAD_MUXSEL_1)
+#define MX28_PAD_AUART0_CTS__AUART4_RX			MXS_IOMUX_PAD_NAKED(3,  2, PAD_MUXSEL_1)
+#define MX28_PAD_AUART0_RTS__AUART4_TX			MXS_IOMUX_PAD_NAKED(3,  3, PAD_MUXSEL_1)
+#define MX28_PAD_AUART1_RX__SSP2_CARD_DETECT		MXS_IOMUX_PAD_NAKED(3,  4, PAD_MUXSEL_1)
+#define MX28_PAD_AUART1_TX__SSP3_CARD_DETECT		MXS_IOMUX_PAD_NAKED(3,  5, PAD_MUXSEL_1)
+#define MX28_PAD_AUART1_CTS__USB0_OVERCURRENT		MXS_IOMUX_PAD_NAKED(3,  6, PAD_MUXSEL_1)
+#define MX28_PAD_AUART1_RTS__USB0_ID			MXS_IOMUX_PAD_NAKED(3,  7, PAD_MUXSEL_1)
+#define MX28_PAD_AUART2_RX__SSP3_D1			MXS_IOMUX_PAD_NAKED(3,  8, PAD_MUXSEL_1)
+#define MX28_PAD_AUART2_TX__SSP3_D2			MXS_IOMUX_PAD_NAKED(3,  9, PAD_MUXSEL_1)
+#define MX28_PAD_AUART2_CTS__I2C1_SCL			MXS_IOMUX_PAD_NAKED(3, 10, PAD_MUXSEL_1)
+#define MX28_PAD_AUART2_RTS__I2C1_SDA			MXS_IOMUX_PAD_NAKED(3, 11, PAD_MUXSEL_1)
+#define MX28_PAD_AUART3_RX__CAN0_TX			MXS_IOMUX_PAD_NAKED(3, 12, PAD_MUXSEL_1)
+#define MX28_PAD_AUART3_TX__CAN0_RX			MXS_IOMUX_PAD_NAKED(3, 13, PAD_MUXSEL_1)
+#define MX28_PAD_AUART3_CTS__CAN1_TX			MXS_IOMUX_PAD_NAKED(3, 14, PAD_MUXSEL_1)
+#define MX28_PAD_AUART3_RTS__CAN1_RX			MXS_IOMUX_PAD_NAKED(3, 15, PAD_MUXSEL_1)
+#define MX28_PAD_PWM0__I2C1_SCL				MXS_IOMUX_PAD_NAKED(3, 16, PAD_MUXSEL_1)
+#define MX28_PAD_PWM1__I2C1_SDA				MXS_IOMUX_PAD_NAKED(3, 17, PAD_MUXSEL_1)
+#define MX28_PAD_PWM2__USB0_ID				MXS_IOMUX_PAD_NAKED(3, 18, PAD_MUXSEL_1)
+#define MX28_PAD_SAIF0_MCLK__PWM_3			MXS_IOMUX_PAD_NAKED(3, 20, PAD_MUXSEL_1)
+#define MX28_PAD_SAIF0_LRCLK__PWM_4			MXS_IOMUX_PAD_NAKED(3, 21, PAD_MUXSEL_1)
+#define MX28_PAD_SAIF0_BITCLK__PWM_5			MXS_IOMUX_PAD_NAKED(3, 22, PAD_MUXSEL_1)
+#define MX28_PAD_SAIF0_SDATA0__PWM_6			MXS_IOMUX_PAD_NAKED(3, 23, PAD_MUXSEL_1)
+#define MX28_PAD_I2C0_SCL__TIMROT_ROTARYA		MXS_IOMUX_PAD_NAKED(3, 24, PAD_MUXSEL_1)
+#define MX28_PAD_I2C0_SDA__TIMROT_ROTARYB		MXS_IOMUX_PAD_NAKED(3, 25, PAD_MUXSEL_1)
+#define MX28_PAD_SAIF1_SDATA0__PWM_7			MXS_IOMUX_PAD_NAKED(3, 26, PAD_MUXSEL_1)
+#define MX28_PAD_LCD_RESET__LCD_VSYNC			MXS_IOMUX_PAD_NAKED(3, 30, PAD_MUXSEL_1)
+
+#define MX28_PAD_ENET0_MDC__GPMI_CE4N			MXS_IOMUX_PAD_NAKED(4,  0, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_MDIO__GPMI_CE5N			MXS_IOMUX_PAD_NAKED(4,  1, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RX_EN__GPMI_CE6N			MXS_IOMUX_PAD_NAKED(4,  2, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RXD0__GPMI_CE7N			MXS_IOMUX_PAD_NAKED(4,  3, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RXD1__GPMI_READY4		MXS_IOMUX_PAD_NAKED(4,  4, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TX_CLK__HSADC_TRIGGER		MXS_IOMUX_PAD_NAKED(4,  5, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TX_EN__GPMI_READY5		MXS_IOMUX_PAD_NAKED(4,  6, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TXD0__GPMI_READY6		MXS_IOMUX_PAD_NAKED(4,  7, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TXD1__GPMI_READY7		MXS_IOMUX_PAD_NAKED(4,  8, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RXD2__ENET1_RXD0			MXS_IOMUX_PAD_NAKED(4,  9, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RXD3__ENET1_RXD1			MXS_IOMUX_PAD_NAKED(4, 10, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TXD2__ENET1_TXD0			MXS_IOMUX_PAD_NAKED(4, 11, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_TXD3__ENET1_TXD1			MXS_IOMUX_PAD_NAKED(4, 12, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_RX_CLK__ENET0_RX_ER		MXS_IOMUX_PAD_NAKED(4, 13, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_COL__ENET1_TX_EN			MXS_IOMUX_PAD_NAKED(4, 14, PAD_MUXSEL_1)
+#define MX28_PAD_ENET0_CRS__ENET1_RX_EN			MXS_IOMUX_PAD_NAKED(4, 15, PAD_MUXSEL_1)
+
+/* MUXSEL_2 */
+#define MX28_PAD_GPMI_CE2N__ENET0_RX_ER			MXS_IOMUX_PAD_NAKED(0, 18, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_CE3N__SAIF1_MCLK			MXS_IOMUX_PAD_NAKED(0, 19, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_RDY0__USB0_ID			MXS_IOMUX_PAD_NAKED(0, 20, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_RDY2__ENET0_TX_ER			MXS_IOMUX_PAD_NAKED(0, 22, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_RDY3__HSADC_TRIGGER		MXS_IOMUX_PAD_NAKED(0, 23, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_ALE__SSP3_D4			MXS_IOMUX_PAD_NAKED(0, 26, PAD_MUXSEL_2)
+#define MX28_PAD_GPMI_CLE__SSP3_D5			MXS_IOMUX_PAD_NAKED(0, 27, PAD_MUXSEL_2)
+
+#define MX28_PAD_LCD_D00__ETM_DA0			MXS_IOMUX_PAD_NAKED(1,  0, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D01__ETM_DA1			MXS_IOMUX_PAD_NAKED(1,  1, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D02__ETM_DA2			MXS_IOMUX_PAD_NAKED(1,  2, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D03__ETM_DA3			MXS_IOMUX_PAD_NAKED(1,  3, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D04__ETM_DA4			MXS_IOMUX_PAD_NAKED(1,  4, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D05__ETM_DA5			MXS_IOMUX_PAD_NAKED(1,  5, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D06__ETM_DA6			MXS_IOMUX_PAD_NAKED(1,  6, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D07__ETM_DA7			MXS_IOMUX_PAD_NAKED(1,  7, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D08__ETM_DA8			MXS_IOMUX_PAD_NAKED(1,  8, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D09__ETM_DA9			MXS_IOMUX_PAD_NAKED(1,  9, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D10__ETM_DA10			MXS_IOMUX_PAD_NAKED(1, 10, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D11__ETM_DA11			MXS_IOMUX_PAD_NAKED(1, 11, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D12__ETM_DA12			MXS_IOMUX_PAD_NAKED(1, 12, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D13__ETM_DA13			MXS_IOMUX_PAD_NAKED(1, 13, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D14__ETM_DA14			MXS_IOMUX_PAD_NAKED(1, 14, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D15__ETM_DA15			MXS_IOMUX_PAD_NAKED(1, 15, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D16__ETM_DA7			MXS_IOMUX_PAD_NAKED(1, 16, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D17__ETM_DA6			MXS_IOMUX_PAD_NAKED(1, 17, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D18__ETM_DA5			MXS_IOMUX_PAD_NAKED(1, 18, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D19__ETM_DA4			MXS_IOMUX_PAD_NAKED(1, 19, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D20__ETM_DA3			MXS_IOMUX_PAD_NAKED(1, 20, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D21__ETM_DA2			MXS_IOMUX_PAD_NAKED(1, 21, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D22__ETM_DA1			MXS_IOMUX_PAD_NAKED(1, 22, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_D23__ETM_DA0			MXS_IOMUX_PAD_NAKED(1, 23, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_RD_E__ETM_TCTL			MXS_IOMUX_PAD_NAKED(1, 24, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_WR_RWN__ETM_TCLK			MXS_IOMUX_PAD_NAKED(1, 25, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_HSYNC__ETM_TCTL			MXS_IOMUX_PAD_NAKED(1, 29, PAD_MUXSEL_2)
+#define MX28_PAD_LCD_DOTCLK__ETM_TCLK			MXS_IOMUX_PAD_NAKED(1, 30, PAD_MUXSEL_2)
+
+#define MX28_PAD_SSP1_SCK__ENET0_1588_EVENT2_OUT	MXS_IOMUX_PAD_NAKED(2, 12, PAD_MUXSEL_2)
+#define MX28_PAD_SSP1_CMD__ENET0_1588_EVENT2_IN		MXS_IOMUX_PAD_NAKED(2, 13, PAD_MUXSEL_2)
+#define MX28_PAD_SSP1_DATA0__ENET0_1588_EVENT3_OUT	MXS_IOMUX_PAD_NAKED(2, 14, PAD_MUXSEL_2)
+#define MX28_PAD_SSP1_DATA3__ENET0_1588_EVENT3_IN	MXS_IOMUX_PAD_NAKED(2, 15, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_SCK__SAIF0_SDATA1			MXS_IOMUX_PAD_NAKED(2, 16, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_MOSI__SAIF0_SDATA2		MXS_IOMUX_PAD_NAKED(2, 17, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_MISO__SAIF1_SDATA1		MXS_IOMUX_PAD_NAKED(2, 18, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_SS0__SAIF1_SDATA2			MXS_IOMUX_PAD_NAKED(2, 19, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_SS1__USB1_OVERCURRENT		MXS_IOMUX_PAD_NAKED(2, 20, PAD_MUXSEL_2)
+#define MX28_PAD_SSP2_SS2__USB0_OVERCURRENT		MXS_IOMUX_PAD_NAKED(2, 21, PAD_MUXSEL_2)
+#define MX28_PAD_SSP3_SCK__ENET1_1588_EVENT0_OUT	MXS_IOMUX_PAD_NAKED(2, 24, PAD_MUXSEL_2)
+#define MX28_PAD_SSP3_MOSI__ENET1_1588_EVENT0_IN	MXS_IOMUX_PAD_NAKED(2, 25, PAD_MUXSEL_2)
+#define MX28_PAD_SSP3_MISO__ENET1_1588_EVENT1_OUT	MXS_IOMUX_PAD_NAKED(2, 26, PAD_MUXSEL_2)
+#define MX28_PAD_SSP3_SS0__ENET1_1588_EVENT1_IN		MXS_IOMUX_PAD_NAKED(2, 27, PAD_MUXSEL_2)
+
+#define MX28_PAD_AUART0_RX__DUART_CTS			MXS_IOMUX_PAD_NAKED(3,  0, PAD_MUXSEL_2)
+#define MX28_PAD_AUART0_TX__DUART_RTS			MXS_IOMUX_PAD_NAKED(3,  1, PAD_MUXSEL_2)
+#define MX28_PAD_AUART0_CTS__DUART_RX			MXS_IOMUX_PAD_NAKED(3,  2, PAD_MUXSEL_2)
+#define MX28_PAD_AUART0_RTS__DUART_TX			MXS_IOMUX_PAD_NAKED(3,  3, PAD_MUXSEL_2)
+#define MX28_PAD_AUART1_RX__PWM_0			MXS_IOMUX_PAD_NAKED(3,  4, PAD_MUXSEL_2)
+#define MX28_PAD_AUART1_TX__PWM_1			MXS_IOMUX_PAD_NAKED(3,  5, PAD_MUXSEL_2)
+#define MX28_PAD_AUART1_CTS__TIMROT_ROTARYA		MXS_IOMUX_PAD_NAKED(3,  6, PAD_MUXSEL_2)
+#define MX28_PAD_AUART1_RTS__TIMROT_ROTARYB		MXS_IOMUX_PAD_NAKED(3,  7, PAD_MUXSEL_2)
+#define MX28_PAD_AUART2_RX__SSP3_D4			MXS_IOMUX_PAD_NAKED(3,  8, PAD_MUXSEL_2)
+#define MX28_PAD_AUART2_TX__SSP3_D5			MXS_IOMUX_PAD_NAKED(3,  9, PAD_MUXSEL_2)
+#define MX28_PAD_AUART2_CTS__SAIF1_BITCLK		MXS_IOMUX_PAD_NAKED(3, 10, PAD_MUXSEL_2)
+#define MX28_PAD_AUART2_RTS__SAIF1_LRCLK		MXS_IOMUX_PAD_NAKED(3, 11, PAD_MUXSEL_2)
+#define MX28_PAD_AUART3_RX__ENET0_1588_EVENT0_OUT	MXS_IOMUX_PAD_NAKED(3, 12, PAD_MUXSEL_2)
+#define MX28_PAD_AUART3_TX__ENET0_1588_EVENT0_IN	MXS_IOMUX_PAD_NAKED(3, 13, PAD_MUXSEL_2)
+#define MX28_PAD_AUART3_CTS__ENET0_1588_EVENT1_OUT	MXS_IOMUX_PAD_NAKED(3, 14, PAD_MUXSEL_2)
+#define MX28_PAD_AUART3_RTS__ENET0_1588_EVENT1_IN	MXS_IOMUX_PAD_NAKED(3, 15, PAD_MUXSEL_2)
+#define MX28_PAD_PWM0__DUART_RX				MXS_IOMUX_PAD_NAKED(3, 16, PAD_MUXSEL_2)
+#define MX28_PAD_PWM1__DUART_TX				MXS_IOMUX_PAD_NAKED(3, 17, PAD_MUXSEL_2)
+#define MX28_PAD_PWM2__USB1_OVERCURRENT			MXS_IOMUX_PAD_NAKED(3, 18, PAD_MUXSEL_2)
+#define MX28_PAD_SAIF0_MCLK__AUART4_CTS			MXS_IOMUX_PAD_NAKED(3, 20, PAD_MUXSEL_2)
+#define MX28_PAD_SAIF0_LRCLK__AUART4_RTS		MXS_IOMUX_PAD_NAKED(3, 21, PAD_MUXSEL_2)
+#define MX28_PAD_SAIF0_BITCLK__AUART4_RX		MXS_IOMUX_PAD_NAKED(3, 22, PAD_MUXSEL_2)
+#define MX28_PAD_SAIF0_SDATA0__AUART4_TX		MXS_IOMUX_PAD_NAKED(3, 23, PAD_MUXSEL_2)
+#define MX28_PAD_I2C0_SCL__DUART_RX			MXS_IOMUX_PAD_NAKED(3, 24, PAD_MUXSEL_2)
+#define MX28_PAD_I2C0_SDA__DUART_TX			MXS_IOMUX_PAD_NAKED(3, 25, PAD_MUXSEL_2)
+#define MX28_PAD_SAIF1_SDATA0__SAIF0_SDATA1		MXS_IOMUX_PAD_NAKED(3, 26, PAD_MUXSEL_2)
+#define MX28_PAD_SPDIF__ENET1_RX_ER			MXS_IOMUX_PAD_NAKED(3, 27, PAD_MUXSEL_2)
+
+#define MX28_PAD_ENET0_MDC__SAIF0_SDATA1		MXS_IOMUX_PAD_NAKED(4,  0, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_MDIO__SAIF0_SDATA2		MXS_IOMUX_PAD_NAKED(4,  1, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_RX_EN__SAIF1_SDATA1		MXS_IOMUX_PAD_NAKED(4,  2, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_RXD0__SAIF1_SDATA2		MXS_IOMUX_PAD_NAKED(4,  3, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_TX_CLK__ENET0_1588_EVENT2_OUT	MXS_IOMUX_PAD_NAKED(4,  5, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_RXD2__ENET0_1588_EVENT0_OUT	MXS_IOMUX_PAD_NAKED(4,  9, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_RXD3__ENET0_1588_EVENT0_IN	MXS_IOMUX_PAD_NAKED(4, 10, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_TXD2__ENET0_1588_EVENT1_OUT	MXS_IOMUX_PAD_NAKED(4, 11, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_TXD3__ENET0_1588_EVENT1_IN	MXS_IOMUX_PAD_NAKED(4, 12, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_RX_CLK__ENET0_1588_EVENT2_IN	MXS_IOMUX_PAD_NAKED(4, 13, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_COL__ENET0_1588_EVENT3_OUT	MXS_IOMUX_PAD_NAKED(4, 14, PAD_MUXSEL_2)
+#define MX28_PAD_ENET0_CRS__ENET0_1588_EVENT3_IN	MXS_IOMUX_PAD_NAKED(4, 15, PAD_MUXSEL_2)
+
+/* MUXSEL_GPIO */
+#define MX28_PAD_GPMI_D00__GPIO_0_0			MXS_IOMUX_PAD_NAKED(0,  0, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D01__GPIO_0_1			MXS_IOMUX_PAD_NAKED(0,  1, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D02__GPIO_0_2			MXS_IOMUX_PAD_NAKED(0,  2, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D03__GPIO_0_3			MXS_IOMUX_PAD_NAKED(0,  3, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D04__GPIO_0_4			MXS_IOMUX_PAD_NAKED(0,  4, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D05__GPIO_0_5			MXS_IOMUX_PAD_NAKED(0,  5, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D06__GPIO_0_6			MXS_IOMUX_PAD_NAKED(0,  6, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_D07__GPIO_0_7			MXS_IOMUX_PAD_NAKED(0,  7, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_CE0N__GPIO_0_16			MXS_IOMUX_PAD_NAKED(0, 16, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_CE1N__GPIO_0_17			MXS_IOMUX_PAD_NAKED(0, 17, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_CE2N__GPIO_0_18			MXS_IOMUX_PAD_NAKED(0, 18, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_CE3N__GPIO_0_19			MXS_IOMUX_PAD_NAKED(0, 19, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RDY0__GPIO_0_20			MXS_IOMUX_PAD_NAKED(0, 20, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RDY1__GPIO_0_21			MXS_IOMUX_PAD_NAKED(0, 21, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RDY2__GPIO_0_22			MXS_IOMUX_PAD_NAKED(0, 22, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RDY3__GPIO_0_23			MXS_IOMUX_PAD_NAKED(0, 23, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RDN__GPIO_0_24			MXS_IOMUX_PAD_NAKED(0, 24, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_WRN__GPIO_0_25			MXS_IOMUX_PAD_NAKED(0, 25, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_ALE__GPIO_0_26			MXS_IOMUX_PAD_NAKED(0, 26, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_CLE__GPIO_0_27			MXS_IOMUX_PAD_NAKED(0, 27, PAD_MUXSEL_GPIO)
+#define MX28_PAD_GPMI_RESETN__GPIO_0_28			MXS_IOMUX_PAD_NAKED(0, 28, PAD_MUXSEL_GPIO)
+
+#define MX28_PAD_LCD_D00__GPIO_1_0			MXS_IOMUX_PAD_NAKED(1,  0, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D01__GPIO_1_1			MXS_IOMUX_PAD_NAKED(1,  1, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D02__GPIO_1_2			MXS_IOMUX_PAD_NAKED(1,  2, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D03__GPIO_1_3			MXS_IOMUX_PAD_NAKED(1,  3, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D04__GPIO_1_4			MXS_IOMUX_PAD_NAKED(1,  4, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D05__GPIO_1_5			MXS_IOMUX_PAD_NAKED(1,  5, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D06__GPIO_1_6			MXS_IOMUX_PAD_NAKED(1,  6, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D07__GPIO_1_7			MXS_IOMUX_PAD_NAKED(1,  7, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D08__GPIO_1_8			MXS_IOMUX_PAD_NAKED(1,  8, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D09__GPIO_1_9			MXS_IOMUX_PAD_NAKED(1,  9, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D10__GPIO_1_10			MXS_IOMUX_PAD_NAKED(1, 10, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D11__GPIO_1_11			MXS_IOMUX_PAD_NAKED(1, 11, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D12__GPIO_1_12			MXS_IOMUX_PAD_NAKED(1, 12, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D13__GPIO_1_13			MXS_IOMUX_PAD_NAKED(1, 13, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D14__GPIO_1_14			MXS_IOMUX_PAD_NAKED(1, 14, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D15__GPIO_1_15			MXS_IOMUX_PAD_NAKED(1, 15, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D16__GPIO_1_16			MXS_IOMUX_PAD_NAKED(1, 16, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D17__GPIO_1_17			MXS_IOMUX_PAD_NAKED(1, 17, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D18__GPIO_1_18			MXS_IOMUX_PAD_NAKED(1, 18, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D19__GPIO_1_19			MXS_IOMUX_PAD_NAKED(1, 19, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D20__GPIO_1_20			MXS_IOMUX_PAD_NAKED(1, 20, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D21__GPIO_1_21			MXS_IOMUX_PAD_NAKED(1, 21, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D22__GPIO_1_22			MXS_IOMUX_PAD_NAKED(1, 22, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_D23__GPIO_1_23			MXS_IOMUX_PAD_NAKED(1, 23, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_RD_E__GPIO_1_24			MXS_IOMUX_PAD_NAKED(1, 24, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_WR_RWN__GPIO_1_25			MXS_IOMUX_PAD_NAKED(1, 25, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_RS__GPIO_1_26			MXS_IOMUX_PAD_NAKED(1, 26, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_CS__GPIO_1_27			MXS_IOMUX_PAD_NAKED(1, 27, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_VSYNC__GPIO_1_28			MXS_IOMUX_PAD_NAKED(1, 28, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_HSYNC__GPIO_1_29			MXS_IOMUX_PAD_NAKED(1, 29, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_DOTCLK__GPIO_1_30			MXS_IOMUX_PAD_NAKED(1, 30, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_ENABLE__GPIO_1_31			MXS_IOMUX_PAD_NAKED(1, 31, PAD_MUXSEL_GPIO)
+
+#define MX28_PAD_SSP0_DATA0__GPIO_2_0			MXS_IOMUX_PAD_NAKED(2,  0, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA1__GPIO_2_1			MXS_IOMUX_PAD_NAKED(2,  1, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA2__GPIO_2_2			MXS_IOMUX_PAD_NAKED(2,  2, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA3__GPIO_2_3			MXS_IOMUX_PAD_NAKED(2,  3, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA4__GPIO_2_4			MXS_IOMUX_PAD_NAKED(2,  4, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA5__GPIO_2_5			MXS_IOMUX_PAD_NAKED(2,  5, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA6__GPIO_2_6			MXS_IOMUX_PAD_NAKED(2,  6, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DATA7__GPIO_2_7			MXS_IOMUX_PAD_NAKED(2,  7, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_CMD__GPIO_2_8			MXS_IOMUX_PAD_NAKED(2,  8, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_DETECT__GPIO_2_9			MXS_IOMUX_PAD_NAKED(2,  9, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP0_SCK__GPIO_2_10			MXS_IOMUX_PAD_NAKED(2, 10, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP1_SCK__GPIO_2_12			MXS_IOMUX_PAD_NAKED(2, 12, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP1_CMD__GPIO_2_13			MXS_IOMUX_PAD_NAKED(2, 13, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP1_DATA0__GPIO_2_14			MXS_IOMUX_PAD_NAKED(2, 14, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP1_DATA3__GPIO_2_15			MXS_IOMUX_PAD_NAKED(2, 15, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_SCK__GPIO_2_16			MXS_IOMUX_PAD_NAKED(2, 16, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_MOSI__GPIO_2_17			MXS_IOMUX_PAD_NAKED(2, 17, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_MISO__GPIO_2_18			MXS_IOMUX_PAD_NAKED(2, 18, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_SS0__GPIO_2_19			MXS_IOMUX_PAD_NAKED(2, 19, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_SS1__GPIO_2_20			MXS_IOMUX_PAD_NAKED(2, 20, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP2_SS2__GPIO_2_21			MXS_IOMUX_PAD_NAKED(2, 21, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP3_SCK__GPIO_2_24			MXS_IOMUX_PAD_NAKED(2, 24, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP3_MOSI__GPIO_2_25			MXS_IOMUX_PAD_NAKED(2, 25, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP3_MISO__GPIO_2_26			MXS_IOMUX_PAD_NAKED(2, 26, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SSP3_SS0__GPIO_2_27			MXS_IOMUX_PAD_NAKED(2, 27, PAD_MUXSEL_GPIO)
+
+#define MX28_PAD_AUART0_RX__GPIO_3_0			MXS_IOMUX_PAD_NAKED(3,  0, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART0_TX__GPIO_3_1			MXS_IOMUX_PAD_NAKED(3,  1, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART0_CTS__GPIO_3_2			MXS_IOMUX_PAD_NAKED(3,  2, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART0_RTS__GPIO_3_3			MXS_IOMUX_PAD_NAKED(3,  3, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART1_RX__GPIO_3_4			MXS_IOMUX_PAD_NAKED(3,  4, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART1_TX__GPIO_3_5			MXS_IOMUX_PAD_NAKED(3,  5, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART1_CTS__GPIO_3_6			MXS_IOMUX_PAD_NAKED(3,  6, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART1_RTS__GPIO_3_7			MXS_IOMUX_PAD_NAKED(3,  7, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART2_RX__GPIO_3_8			MXS_IOMUX_PAD_NAKED(3,  8, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART2_TX__GPIO_3_9			MXS_IOMUX_PAD_NAKED(3,  9, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART2_CTS__GPIO_3_10			MXS_IOMUX_PAD_NAKED(3, 10, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART2_RTS__GPIO_3_11			MXS_IOMUX_PAD_NAKED(3, 11, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART3_RX__GPIO_3_12			MXS_IOMUX_PAD_NAKED(3, 12, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART3_TX__GPIO_3_13			MXS_IOMUX_PAD_NAKED(3, 13, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART3_CTS__GPIO_3_14			MXS_IOMUX_PAD_NAKED(3, 14, PAD_MUXSEL_GPIO)
+#define MX28_PAD_AUART3_RTS__GPIO_3_15			MXS_IOMUX_PAD_NAKED(3, 15, PAD_MUXSEL_GPIO)
+#define MX28_PAD_PWM0__GPIO_3_16			MXS_IOMUX_PAD_NAKED(3, 16, PAD_MUXSEL_GPIO)
+#define MX28_PAD_PWM1__GPIO_3_17			MXS_IOMUX_PAD_NAKED(3, 17, PAD_MUXSEL_GPIO)
+#define MX28_PAD_PWM2__GPIO_3_18			MXS_IOMUX_PAD_NAKED(3, 18, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SAIF0_MCLK__GPIO_3_20			MXS_IOMUX_PAD_NAKED(3, 20, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SAIF0_LRCLK__GPIO_3_21			MXS_IOMUX_PAD_NAKED(3, 21, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SAIF0_BITCLK__GPIO_3_22		MXS_IOMUX_PAD_NAKED(3, 22, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SAIF0_SDATA0__GPIO_3_23		MXS_IOMUX_PAD_NAKED(3, 23, PAD_MUXSEL_GPIO)
+#define MX28_PAD_I2C0_SCL__GPIO_3_24			MXS_IOMUX_PAD_NAKED(3, 24, PAD_MUXSEL_GPIO)
+#define MX28_PAD_I2C0_SDA__GPIO_3_25			MXS_IOMUX_PAD_NAKED(3, 25, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SAIF1_SDATA0__GPIO_3_26		MXS_IOMUX_PAD_NAKED(3, 26, PAD_MUXSEL_GPIO)
+#define MX28_PAD_SPDIF__GPIO_3_27			MXS_IOMUX_PAD_NAKED(3, 27, PAD_MUXSEL_GPIO)
+#define MX28_PAD_PWM3__GPIO_3_28			MXS_IOMUX_PAD_NAKED(3, 28, PAD_MUXSEL_GPIO)
+#define MX28_PAD_PWM4__GPIO_3_29			MXS_IOMUX_PAD_NAKED(3, 29, PAD_MUXSEL_GPIO)
+#define MX28_PAD_LCD_RESET__GPIO_3_30			MXS_IOMUX_PAD_NAKED(3, 30, PAD_MUXSEL_GPIO)
+
+#define MX28_PAD_ENET0_MDC__GPIO_4_0			MXS_IOMUX_PAD_NAKED(4,  0, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_MDIO__GPIO_4_1			MXS_IOMUX_PAD_NAKED(4,  1, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RX_EN__GPIO_4_2			MXS_IOMUX_PAD_NAKED(4,  2, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RXD0__GPIO_4_3			MXS_IOMUX_PAD_NAKED(4,  3, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RXD1__GPIO_4_4			MXS_IOMUX_PAD_NAKED(4,  4, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TX_CLK__GPIO_4_5			MXS_IOMUX_PAD_NAKED(4,  5, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TX_EN__GPIO_4_6			MXS_IOMUX_PAD_NAKED(4,  6, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TXD0__GPIO_4_7			MXS_IOMUX_PAD_NAKED(4,  7, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TXD1__GPIO_4_8			MXS_IOMUX_PAD_NAKED(4,  8, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RXD2__GPIO_4_9			MXS_IOMUX_PAD_NAKED(4,  9, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RXD3__GPIO_4_10			MXS_IOMUX_PAD_NAKED(4, 10, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TXD2__GPIO_4_11			MXS_IOMUX_PAD_NAKED(4, 11, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_TXD3__GPIO_4_12			MXS_IOMUX_PAD_NAKED(4, 12, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_RX_CLK__GPIO_4_13		MXS_IOMUX_PAD_NAKED(4, 13, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_COL__GPIO_4_14			MXS_IOMUX_PAD_NAKED(4, 14, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET0_CRS__GPIO_4_15			MXS_IOMUX_PAD_NAKED(4, 15, PAD_MUXSEL_GPIO)
+#define MX28_PAD_ENET_CLK__GPIO_4_16			MXS_IOMUX_PAD_NAKED(4, 16, PAD_MUXSEL_GPIO)
+#define MX28_PAD_JTAG_RTCK__GPIO_4_20			MXS_IOMUX_PAD_NAKED(4, 20, PAD_MUXSEL_GPIO)
+
+#endif /* __MACH_IOMUX_MX28_H__ */

arch/arm/include/asm/arch-mx28/iomux.h new file +158 -0

new file mode 100644
index 0000000..7abdf58
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ *			<[email protected]>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_MXS_IOMUX_H__
+#define __MACH_MXS_IOMUX_H__
+
+/*
+ * IOMUX/PAD Bit field definitions
+ *
+ * PAD_BANK:		 0..2	(3)
+ * PAD_PIN:		 3..7	(5)
+ * PAD_MUXSEL:		 8..9	(2)
+ * PAD_MA:		10..11	(2)
+ * PAD_MA_VALID:	12	(1)
+ * PAD_VOL:		13	(1)
+ * PAD_VOL_VALID:	14	(1)
+ * PAD_PULL:		15	(1)
+ * PAD_PULL_VALID:	16	(1)
+ * RESERVED:		17..31	(15)
+ */
+typedef u32 iomux_cfg_t;
+
+#define MXS_PAD_BANK_SHIFT	0
+#define MXS_PAD_BANK_MASK	((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT)
+#define MXS_PAD_PIN_SHIFT	3
+#define MXS_PAD_PIN_MASK	((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT)
+#define MXS_PAD_MUXSEL_SHIFT	8
+#define MXS_PAD_MUXSEL_MASK	((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT)
+#define MXS_PAD_MA_SHIFT	10
+#define MXS_PAD_MA_MASK		((iomux_cfg_t)0x3 << MXS_PAD_MA_SHIFT)
+#define MXS_PAD_MA_VALID_SHIFT	12
+#define MXS_PAD_MA_VALID_MASK	((iomux_cfg_t)0x1 << MXS_PAD_MA_VALID_SHIFT)
+#define MXS_PAD_VOL_SHIFT	13
+#define MXS_PAD_VOL_MASK	((iomux_cfg_t)0x1 << MXS_PAD_VOL_SHIFT)
+#define MXS_PAD_VOL_VALID_SHIFT	14
+#define MXS_PAD_VOL_VALID_MASK	((iomux_cfg_t)0x1 << MXS_PAD_VOL_VALID_SHIFT)
+#define MXS_PAD_PULL_SHIFT	15
+#define MXS_PAD_PULL_MASK	((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT)
+#define MXS_PAD_PULL_VALID_SHIFT 16
+#define MXS_PAD_PULL_VALID_MASK	((iomux_cfg_t)0x1 << MXS_PAD_PULL_VALID_SHIFT)
+
+#define PAD_MUXSEL_0		0
+#define PAD_MUXSEL_1		1
+#define PAD_MUXSEL_2		2
+#define PAD_MUXSEL_GPIO		3
+
+#define PAD_4MA			0
+#define PAD_8MA			1
+#define PAD_12MA		2
+#define PAD_16MA		3
+
+#define PAD_1V8			0
+#define PAD_3V3			1
+
+#define PAD_NOPULL		0
+#define PAD_PULLUP		1
+
+#define MXS_PAD_4MA	((PAD_4MA << MXS_PAD_MA_SHIFT) | \
+					MXS_PAD_MA_VALID_MASK)
+#define MXS_PAD_8MA	((PAD_8MA << MXS_PAD_MA_SHIFT) | \
+					MXS_PAD_MA_VALID_MASK)
+#define MXS_PAD_12MA	((PAD_12MA << MXS_PAD_MA_SHIFT) | \
+					MXS_PAD_MA_VALID_MASK)
+#define MXS_PAD_16MA	((PAD_16MA << MXS_PAD_MA_SHIFT) | \
+					MXS_PAD_MA_VALID_MASK)
+
+#define MXS_PAD_1V8	((PAD_1V8 << MXS_PAD_VOL_SHIFT) | \
+					MXS_PAD_VOL_VALID_MASK)
+#define MXS_PAD_3V3	((PAD_3V3 << MXS_PAD_VOL_SHIFT) | \
+					MXS_PAD_VOL_VALID_MASK)
+
+#define MXS_PAD_NOPULL	((PAD_NOPULL << MXS_PAD_PULL_SHIFT) | \
+					MXS_PAD_PULL_VALID_MASK)
+#define MXS_PAD_PULLUP	((PAD_PULLUP << MXS_PAD_PULL_SHIFT) | \
+					MXS_PAD_PULL_VALID_MASK)
+
+/* generic pad control used in most cases */
+#define MXS_PAD_CTRL	(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL)
+
+#define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _ma, _vol, _pull)		\
+		(((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) |		\
+		((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) |		\
+		((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) |	\
+		((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) |		\
+		((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) |		\
+		((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT))
+
+/*
+ * A pad becomes naked, when none of mA, vol or pull
+ * validity bits is set.
+ */
+#define MXS_IOMUX_PAD_NAKED(_bank, _pin, _muxsel) \
+		MXS_IOMUX_PAD(_bank, _pin, _muxsel, 0, 0, 0)
+
+static inline unsigned int PAD_BANK(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
+}
+
+static inline unsigned int PAD_PIN(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
+}
+
+static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
+}
+
+static inline unsigned int PAD_MA(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
+}
+
+static inline unsigned int PAD_MA_VALID(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_MA_VALID_MASK) >> MXS_PAD_MA_VALID_SHIFT;
+}
+
+static inline unsigned int PAD_VOL(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
+}
+
+static inline unsigned int PAD_VOL_VALID(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_VOL_VALID_MASK) >> MXS_PAD_VOL_VALID_SHIFT;
+}
+
+static inline unsigned int PAD_PULL(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
+}
+
+static inline unsigned int PAD_PULL_VALID(iomux_cfg_t pad)
+{
+	return (pad & MXS_PAD_PULL_VALID_MASK) >> MXS_PAD_PULL_VALID_SHIFT;
+}
+
+/*
+ * configures a single pad in the iomuxer

Signed-off-by Marek Vasut <[email protected]>

Cc Heiko Schocher <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 drivers/i2c/Makefile  |    1 +
 drivers/i2c/mxs_i2c.c |  246 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 247 insertions(+), 0 deletions(-)
 create mode 100644 drivers/i2c/mxs_i2c.c

Hello Marek,

Quoted 5 lines · Marek Vasut

Signed-off-by Marek Vasut <[email protected]>

Cc Heiko Schocher <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

Quoted 7 lines

---

 drivers/i2c/Makefile  |    1 +
 drivers/i2c/mxs_i2c.c |  246
 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 247
 insertions(+), 0 deletions(-)
 create mode 100644 drivers/i2c/mxs_i2c.c

Is this a repost from:

http://lists.denx.de/pipermail/u-boot/2011-September/100716.html

I acked this patch here:

http://lists.denx.de/pipermail/u-boot/2011-September/100771.html

missing in this patch, so again:

Acked-by Heiko Schocher<[email protected]>

bye,
Heiko

Signed-off-by Marek Vasut <[email protected]>

Cc Heiko Schocher <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 drivers/i2c/Makefile  |    1 +
 drivers/i2c/mxs_i2c.c |  246 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 247 insertions(+), 0 deletions(-)
 create mode 100644 drivers/i2c/mxs_i2c.c

drivers/i2c/Makefile +1 -0

index a48047a..2fb521e 100644
@@ -31,6 +31,7 @@ COBJS-$(CONFIG_FSL_I2C) += fsl_i2c.o
 COBJS-$(CONFIG_I2C_MVTWSI) += mvtwsi.o
 COBJS-$(CONFIG_I2C_MV) += mv_i2c.o
 COBJS-$(CONFIG_I2C_MXC) += mxc_i2c.o
+COBJS-$(CONFIG_I2C_MXS) += mxs_i2c.o
 COBJS-$(CONFIG_DRIVER_OMAP1510_I2C) += omap1510_i2c.o
 COBJS-$(CONFIG_DRIVER_OMAP24XX_I2C) += omap24xx_i2c.o
 COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += omap24xx_i2c.o

drivers/i2c/mxs_i2c.c new file +236 -0

new file mode 100644
index 0000000..c8fea32
@@ -0,0 +1,246 @@
+/*
+ * Freescale i.MX28 I2C Driver
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Partly based on Linux kernel i2c-mxs.c driver:
+ * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.
+ *
+ * Which was based on a (non-working) driver which was:
+ * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+
+#define	MXS_I2C_MAX_TIMEOUT	1000000
+
+void mxs_i2c_reset(void)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+	int ret;
+
+	ret = mx28_reset_block(&i2c_regs->hw_i2c_ctrl0_reg);
+	if (ret) {
+		debug("MXS I2C: Block reset timeout\n");
+		return;
+	}
+
+	writel(I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ | I2C_CTRL1_NO_SLAVE_ACK_IRQ |
+		I2C_CTRL1_EARLY_TERM_IRQ | I2C_CTRL1_MASTER_LOSS_IRQ |
+		I2C_CTRL1_SLAVE_STOP_IRQ | I2C_CTRL1_SLAVE_IRQ,
+		&i2c_regs->hw_i2c_ctrl1_clr);
+
+	writel(I2C_QUEUECTRL_PIO_QUEUE_MODE, &i2c_regs->hw_i2c_queuectrl_set);
+}
+
+void mxs_i2c_setup_read(uint8_t chip, int len)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+
+	writel(I2C_QUEUECMD_RETAIN_CLOCK | I2C_QUEUECMD_PRE_SEND_START |
+		I2C_QUEUECMD_MASTER_MODE | I2C_QUEUECMD_DIRECTION |
+		(1 << I2C_QUEUECMD_XFER_COUNT_OFFSET),
+		&i2c_regs->hw_i2c_queuecmd);
+
+	writel((chip << 1) | 1, &i2c_regs->hw_i2c_data);
+
+	writel(I2C_QUEUECMD_SEND_NAK_ON_LAST | I2C_QUEUECMD_MASTER_MODE |
+		(len << I2C_QUEUECMD_XFER_COUNT_OFFSET) |
+		I2C_QUEUECMD_POST_SEND_STOP, &i2c_regs->hw_i2c_queuecmd);
+
+	writel(I2C_QUEUECTRL_QUEUE_RUN, &i2c_regs->hw_i2c_queuectrl_set);
+}
+
+void mxs_i2c_write(uchar chip, uint addr, int alen,
+			uchar *buf, int blen, int stop)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+	uint32_t data;
+	int i, remain, off;
+
+	if ((alen > 4) || (alen == 0)) {
+		debug("MXS I2C: Invalid address length\n");
+		return;
+	}
+
+	if (stop)
+		stop = I2C_QUEUECMD_POST_SEND_STOP;
+
+	writel(I2C_QUEUECMD_PRE_SEND_START |
+		I2C_QUEUECMD_MASTER_MODE | I2C_QUEUECMD_DIRECTION |
+		((blen + alen + 1) << I2C_QUEUECMD_XFER_COUNT_OFFSET) | stop,
+		&i2c_regs->hw_i2c_queuecmd);
+
+	data = (chip << 1) << 24;
+
+	for (i = 0; i < alen; i++) {
+		data >>= 8;
+		data |= ((char *)&addr)[i] << 24;
+		if ((i & 3) == 2)
+			writel(data, &i2c_regs->hw_i2c_data);
+	}
+
+	off = i;
+	for (; i < off + blen; i++) {
+		data >>= 8;
+		data |= buf[i - off] << 24;
+		if ((i & 3) == 2)
+			writel(data, &i2c_regs->hw_i2c_data);
+	}
+
+	remain = 24 - ((i & 3) * 8);
+	if (remain)
+		writel(data >> remain, &i2c_regs->hw_i2c_data);
+
+	writel(I2C_QUEUECTRL_QUEUE_RUN, &i2c_regs->hw_i2c_queuectrl_set);
+}
+
+int mxs_i2c_wait_for_ack(void)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+	uint32_t tmp;
+	int timeout = MXS_I2C_MAX_TIMEOUT;
+
+	for (;;) {
+		tmp = readl(&i2c_regs->hw_i2c_ctrl1);
+		if (tmp & I2C_CTRL1_NO_SLAVE_ACK_IRQ) {
+			debug("MXS I2C: No slave ACK\n");
+			goto err;
+		}
+
+		if (tmp & (
+			I2C_CTRL1_EARLY_TERM_IRQ | I2C_CTRL1_MASTER_LOSS_IRQ |
+			I2C_CTRL1_SLAVE_STOP_IRQ | I2C_CTRL1_SLAVE_IRQ)) {
+			debug("MXS I2C: Error (CTRL1 = %08x)\n", tmp);
+			goto err;
+		}
+
+		if (tmp & I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ)
+			break;
+
+		if (!timeout--) {
+			debug("MXS I2C: Operation timed out\n");
+			goto err;
+		}
+
+		udelay(1);
+	}
+
+	return 0;
+
+err:
+	mxs_i2c_reset();
+	return 1;
+}
+
+int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+	uint32_t tmp = 0;
+	int ret;
+	int i;
+
+	mxs_i2c_write(chip, addr, alen, NULL, 0, 0);
+	ret = mxs_i2c_wait_for_ack();
+	if (ret) {
+		debug("MXS I2C: Failed writing address\n");
+		return ret;
+	}
+
+	mxs_i2c_setup_read(chip, len);
+	ret = mxs_i2c_wait_for_ack();
+	if (ret) {
+		debug("MXS I2C: Failed reading address\n");
+		return ret;
+	}
+
+	for (i = 0; i < len; i++) {
+		if (!(i & 3)) {
+			while (readl(&i2c_regs->hw_i2c_queuestat) &
+				I2C_QUEUESTAT_RD_QUEUE_EMPTY)
+				;
+			tmp = readl(&i2c_regs->hw_i2c_queuedata);
+		}
+		buffer[i] = tmp & 0xff;
+		tmp >>= 8;
+	}
+
+	return 0;
+}
+
+int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+	int ret;
+	mxs_i2c_write(chip, addr, alen, buffer, len, 1);
+	ret = mxs_i2c_wait_for_ack();
+	if (ret)
+		debug("MXS I2C: Failed writing address\n");
+
+	return ret;
+}
+
+int i2c_probe(uchar chip)
+{
+	int ret;
+	mxs_i2c_write(chip, 0, 1, NULL, 0, 1);
+	ret = mxs_i2c_wait_for_ack();
+	mxs_i2c_reset();
+	return ret;
+}
+
+void i2c_init(int speed, int slaveadd)
+{
+	struct mx28_i2c_regs *i2c_regs = (struct mx28_i2c_regs *)MXS_I2C0_BASE;
+
+	mxs_i2c_reset();
+
+	switch (speed) {
+	case 100000:
+		writel((0x0078 << I2C_TIMING0_HIGH_COUNT_OFFSET) |
+			(0x0030 << I2C_TIMING0_RCV_COUNT_OFFSET),
+			&i2c_regs->hw_i2c_timing0);
+		writel((0x0080 << I2C_TIMING1_LOW_COUNT_OFFSET) |
+			(0x0030 << I2C_TIMING1_XMIT_COUNT_OFFSET),
+			&i2c_regs->hw_i2c_timing1);
+		break;
+	case 400000:
+		writel((0x000f << I2C_TIMING0_HIGH_COUNT_OFFSET) |
+			(0x0007 << I2C_TIMING0_RCV_COUNT_OFFSET),
+			&i2c_regs->hw_i2c_timing0);
+		writel((0x001f << I2C_TIMING1_LOW_COUNT_OFFSET) |
+			(0x000f << I2C_TIMING1_XMIT_COUNT_OFFSET),
+			&i2c_regs->hw_i2c_timing1);
+		break;
+	default:

Signed-off-by Marek Vasut <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 arch/arm/cpu/arm926ejs/mx28/mx28.c    |    6 ++
 arch/arm/include/asm/arch-mx28/gpio.h |   32 ++++++++
 drivers/gpio/Makefile                 |    1 +
 drivers/gpio/mxs_gpio.c               |  136 +++++++++++++++++++++++++++++++++
 4 files changed, 175 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-mx28/gpio.h
 create mode 100644 drivers/gpio/mxs_gpio.c

arch/arm/cpu/arm926ejs/mx28/mx28.c +6 -0

index 446ea8b..e990f3c 100644
@@ -31,6 +31,7 @@
 #include <asm/io.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/gpio.h>
+#include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
 

@@ -134,6 +135,11 @@ int arch_cpu_init(void)
 
 	udelay(1000);
 
+	/*
+	 * Configure GPIO unit
+	 */
+	mxs_gpio_init();
+
 	return 0;
 }
 #endif

arch/arm/include/asm/arch-mx28/gpio.h new file +32 -0

new file mode 100644
index 0000000..be1c944
@@ -0,0 +1,32 @@
+/*
+ * Freescale i.MX28 GPIO
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef	__MX28_GPIO_H__
+#define	__MX28_GPIO_H__
+
+#ifdef	CONFIG_MXS_GPIO
+void mxs_gpio_init(void);
+#else
+inline void mxs_gpio_init(void) {}
+#endif
+
+#endif	/* __MX28_GPIO_H__ */

drivers/gpio/Makefile +1 -0

index f505813..e1142d1 100644
@@ -30,6 +30,7 @@ COBJS-$(CONFIG_KIRKWOOD_GPIO)	+= kw_gpio.o
 COBJS-$(CONFIG_MARVELL_GPIO)	+= mvgpio.o
 COBJS-$(CONFIG_MARVELL_MFP)	+= mvmfp.o
 COBJS-$(CONFIG_MXC_GPIO)	+= mxc_gpio.o
+COBJS-$(CONFIG_MXS_GPIO)	+= mxs_gpio.o
 COBJS-$(CONFIG_PCA953X)		+= pca953x.o
 COBJS-$(CONFIG_PCA9698)		+= pca9698.o
 COBJS-$(CONFIG_S5P)		+= s5p_gpio.o

drivers/gpio/mxs_gpio.c new file +126 -0

new file mode 100644
index 0000000..b7e9591
@@ -0,0 +1,136 @@
+/*
+ * Freescale i.MX28 GPIO control code
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/imx-regs.h>
+
+#if	defined(CONFIG_MX23)
+#define	PINCTRL_BANKS		3
+#define	PINCTRL_DOUT(n)		(0x0500 + ((n) * 0x10))
+#define	PINCTRL_DIN(n)		(0x0600 + ((n) * 0x10))
+#define	PINCTRL_DOE(n)		(0x0700 + ((n) * 0x10))
+#define	PINCTRL_PIN2IRQ(n)	(0x0800 + ((n) * 0x10))
+#define	PINCTRL_IRQEN(n)	(0x0900 + ((n) * 0x10))
+#define	PINCTRL_IRQSTAT(n)	(0x0c00 + ((n) * 0x10))
+#elif	defined(CONFIG_MX28)
+#define	PINCTRL_BANKS		5
+#define	PINCTRL_DOUT(n)		(0x0700 + ((n) * 0x10))
+#define	PINCTRL_DIN(n)		(0x0900 + ((n) * 0x10))
+#define	PINCTRL_DOE(n)		(0x0b00 + ((n) * 0x10))
+#define	PINCTRL_PIN2IRQ(n)	(0x1000 + ((n) * 0x10))
+#define	PINCTRL_IRQEN(n)	(0x1100 + ((n) * 0x10))
+#define	PINCTRL_IRQSTAT(n)	(0x1400 + ((n) * 0x10))
+#else
+#error "Please select CONFIG_MX23 or CONFIG_MX28"
+#endif
+
+#define GPIO_INT_FALL_EDGE	0x0
+#define GPIO_INT_LOW_LEV	0x1
+#define GPIO_INT_RISE_EDGE	0x2
+#define GPIO_INT_HIGH_LEV	0x3
+#define GPIO_INT_LEV_MASK	(1 << 0)
+#define GPIO_INT_POL_MASK	(1 << 1)
+
+void mxs_gpio_init(void)
+{
+	int i;
+
+	for (i = 0; i < PINCTRL_BANKS; i++) {
+		writel(0, MXS_PINCTRL_BASE + PINCTRL_PIN2IRQ(i));
+		writel(0, MXS_PINCTRL_BASE + PINCTRL_IRQEN(i));
+		/* Use SCT address here to clear the IRQSTAT bits */
+		writel(0xffffffff, MXS_PINCTRL_BASE + PINCTRL_IRQSTAT(i) + 8);
+	}
+}
+
+int gpio_get_value(int gp)
+{
+	uint32_t bank = PAD_BANK(gp);
+	uint32_t offset = PINCTRL_DIN(bank);
+	struct mx28_register *reg =
+		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+
+	return (readl(&reg->reg) >> PAD_PIN(gp)) & 1;
+}
+
+void gpio_set_value(int gp, int value)
+{
+	uint32_t bank = PAD_BANK(gp);
+	uint32_t offset = PINCTRL_DOUT(bank);
+	struct mx28_register *reg =
+		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+
+	if (value)
+		writel(1 << PAD_PIN(gp), &reg->reg_set);
+	else
+		writel(1 << PAD_PIN(gp), &reg->reg_clr);
+}
+
+int gpio_direction_input(int gp)
+{
+	uint32_t bank = PAD_BANK(gp);
+	uint32_t offset = PINCTRL_DOE(bank);
+	struct mx28_register *reg =
+		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+
+	writel(1 << PAD_PIN(gp), &reg->reg_clr);
+
+	return 0;
+}
+
+int gpio_direction_output(int gp, int value)
+{
+	uint32_t bank = PAD_BANK(gp);
+	uint32_t offset = PINCTRL_DOE(bank);
+	struct mx28_register *reg =
+		(struct mx28_register *)(MXS_PINCTRL_BASE + offset);
+
+	writel(1 << PAD_PIN(gp), &reg->reg_set);
+
+	gpio_set_value(gp, value);
+
+	return 0;
+}
+
+int gpio_request(int gp, const char *label)
+{
+	if (PAD_BANK(gp) > PINCTRL_BANKS)
+		return -EINVAL;
+
+	return 0;

+int gpio_request(int gp, const char *label)

Quoted 1 line

+int gpio_request(int gp, const char *label)

all of these gpio funcs should be "unsigned gpio"
-mike

Quoted 4 lines · On Wednesday 09 November 2011 04:18:13 Marek Vasut wrote:

Quoted 1 line

+int gpio_request(int gp, const char *label)

all of these gpio funcs should be "unsigned gpio"

It's a problem of API then?

include/asm/gpio.h:int gpio_request(int gp, const char *label);

TBH, I can't imagine gpio number to be lower than zero, but who knows.

Quoted 8 lines

Quoted 4 lines · On Wednesday 09 November 2011 04:18:13 Marek Vasut wrote:

Quoted 1 line

+int gpio_request(int gp, const char *label)

all of these gpio funcs should be "unsigned gpio"

It's a problem of API then?

include/asm/gpio.h:int gpio_request(int gp, const char *label);

a patch has been posted already to fix that

Quoted 2 lines

TBH, I can't imagine gpio number to be lower than zero, but who knows.

such a value makes no sense. the incoming number is interpreted by the gpio driver, so the starting/ending numbers are completely arbitrary. thus we deal with unsigned only.
-mike

Signed-off-by Marek Vasut <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 drivers/spi/Makefile  |    1 +
 drivers/spi/mxs_spi.c |  186 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 187 insertions(+), 0 deletions(-)
 create mode 100644 drivers/spi/mxs_spi.c

drivers/spi/Makefile +1 -0

index 84ad6fa..6f389f0 100644
@@ -37,6 +37,7 @@ COBJS-$(CONFIG_KIRKWOOD_SPI) += kirkwood_spi.o
 COBJS-$(CONFIG_MPC52XX_SPI) += mpc52xx_spi.o
 COBJS-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
 COBJS-$(CONFIG_MXC_SPI) += mxc_spi.o
+COBJS-$(CONFIG_MXS_SPI) += mxs_spi.o
 COBJS-$(CONFIG_OC_TINY_SPI) += oc_tiny_spi.o
 COBJS-$(CONFIG_OMAP3_SPI) += omap3_spi.o
 COBJS-$(CONFIG_SOFT_SPI) += soft_spi.o

drivers/spi/mxs_spi.c new file +176 -0

new file mode 100644
index 0000000..4c27fef
@@ -0,0 +1,186 @@
+/*
+ * Freescale i.MX28 SPI driver
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * NOTE: This driver only supports the SPI-controller chipselects,
+ *       GPIO driven chipselects are not supported.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <spi.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+
+#define	MXS_SPI_MAX_TIMEOUT	1000000
+#define	MXS_SPI_PORT_OFFSET	0x2000
+
+struct mxs_spi_slave {
+	struct spi_slave	slave;
+	uint32_t		max_khz;
+	uint32_t		mode;
+	struct mx28_ssp_regs	*regs;
+};
+
+static inline struct mxs_spi_slave *to_mxs_slave(struct spi_slave *slave)
+{
+	return container_of(slave, struct mxs_spi_slave, slave);
+}
+
+void spi_init(void)
+{
+}
+
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
+				  unsigned int max_hz, unsigned int mode)
+{
+	struct mxs_spi_slave *mxs_slave;
+	uint32_t addr;
+
+	if (bus > 3) {
+		printf("MXS SPI: Max bus number is 3\n");
+		return NULL;
+	}
+
+	mxs_slave = malloc(sizeof(struct mxs_spi_slave));
+	if (!mxs_slave)
+		return NULL;
+
+	addr = MXS_SSP0_BASE + (bus * MXS_SPI_PORT_OFFSET);
+
+	mxs_slave->slave.bus = bus;
+	mxs_slave->slave.cs = cs;
+	mxs_slave->max_khz = max_hz / 1000;
+	mxs_slave->mode = mode;
+	mxs_slave->regs = (struct mx28_ssp_regs *)addr;
+
+	return &mxs_slave->slave;
+}
+
+void spi_free_slave(struct spi_slave *slave)
+{
+	struct mxs_spi_slave *mxs_slave = to_mxs_slave(slave);
+	free(mxs_slave);
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+	struct mxs_spi_slave *mxs_slave = to_mxs_slave(slave);
+	struct mx28_ssp_regs *ssp_regs = mxs_slave->regs;
+	uint32_t reg = 0;
+
+	mx28_reset_block(&ssp_regs->hw_ssp_ctrl0_reg);
+
+	writel(SSP_CTRL0_BUS_WIDTH_ONE_BIT, &ssp_regs->hw_ssp_ctrl0);
+
+	reg = SSP_CTRL1_SSP_MODE_SPI | SSP_CTRL1_WORD_LENGTH_EIGHT_BITS;
+	reg |= (mxs_slave->mode & SPI_CPOL) ? SSP_CTRL1_POLARITY : 0;
+	reg |= (mxs_slave->mode & SPI_CPHA) ? SSP_CTRL1_PHASE : 0;
+	writel(reg, &ssp_regs->hw_ssp_ctrl1);
+
+	writel(0, &ssp_regs->hw_ssp_cmd0);
+
+	mx28_set_ssp_busclock(slave->bus, mxs_slave->max_khz);
+
+	return 0;
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+}
+
+static void mxs_spi_start_xfer(struct mx28_ssp_regs *ssp_regs)
+{
+	writel(SSP_CTRL0_LOCK_CS, &ssp_regs->hw_ssp_ctrl0_set);
+	writel(SSP_CTRL0_IGNORE_CRC, &ssp_regs->hw_ssp_ctrl0_clr);
+}
+
+static void mxs_spi_end_xfer(struct mx28_ssp_regs *ssp_regs)
+{
+	writel(SSP_CTRL0_LOCK_CS, &ssp_regs->hw_ssp_ctrl0_clr);
+	writel(SSP_CTRL0_IGNORE_CRC, &ssp_regs->hw_ssp_ctrl0_set);
+}
+
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
+		const void *dout, void *din, unsigned long flags)
+{
+	struct mxs_spi_slave *mxs_slave = to_mxs_slave(slave);
+	struct mx28_ssp_regs *ssp_regs = mxs_slave->regs;
+	int len = bitlen / 8;
+	const char *tx = dout;
+	char *rx = din;
+
+	if (bitlen == 0)
+		return 0;
+
+	if (!rx && !tx)
+		return 0;
+
+	if (flags & SPI_XFER_BEGIN)
+		mxs_spi_start_xfer(ssp_regs);
+
+	while (len--) {
+		/* We transfer 1 byte */
+		writel(1, &ssp_regs->hw_ssp_xfer_size);
+
+		if ((flags & SPI_XFER_END) && !len)
+			mxs_spi_end_xfer(ssp_regs);
+
+		if (tx)
+			writel(SSP_CTRL0_READ, &ssp_regs->hw_ssp_ctrl0_clr);
+		else
+			writel(SSP_CTRL0_READ, &ssp_regs->hw_ssp_ctrl0_set);
+
+		writel(SSP_CTRL0_RUN, &ssp_regs->hw_ssp_ctrl0_set);
+
+		if (mx28_wait_mask_set(&ssp_regs->hw_ssp_ctrl0_reg,
+			SSP_CTRL0_RUN, MXS_SPI_MAX_TIMEOUT)) {
+			printf("MXS SPI: Timeout waiting for start\n");
+			return -1;
+		}
+
+		if (tx)
+			writel(*tx++, &ssp_regs->hw_ssp_data);
+
+		writel(SSP_CTRL0_DATA_XFER, &ssp_regs->hw_ssp_ctrl0_set);
+
+		if (rx) {
+			if (mx28_wait_mask_clr(&ssp_regs->hw_ssp_status_reg,
+				SSP_STATUS_FIFO_EMPTY, MXS_SPI_MAX_TIMEOUT)) {
+				printf("MXS SPI: Timeout waiting for data\n");
+				return -1;
+			}
+
+			*rx = readl(&ssp_regs->hw_ssp_data);
+			rx++;
+		}

Signed-off-by Marek Vasut <[email protected]>

Cc Stefano Babic <[email protected]>

Cc Wolfgang Denk <[email protected]>

Cc Detlev Zundel <[email protected]>

---
 arch/arm/include/asm/arch-mx28/dma.h       |  170 +++++++
 arch/arm/include/asm/arch-mx28/imx-regs.h  |    1 +
 arch/arm/include/asm/arch-mx28/regs-apbh.h |  466 +++++++++++++++++++
 drivers/dma/Makefile                       |    1 +
 drivers/dma/apbh_dma.c                     |  691 ++++++++++++++++++++++++++++
 5 files changed, 1329 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-mx28/dma.h
 create mode 100644 arch/arm/include/asm/arch-mx28/regs-apbh.h
 create mode 100644 drivers/dma/apbh_dma.c

arch/arm/include/asm/arch-mx28/dma.h new file +170 -0

new file mode 100644
index 0000000..7061e7c
@@ -0,0 +1,170 @@
+/*
+ * Freescale i.MX28 APBH DMA
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Based on code from LTIB:
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#ifndef __DMA_H__
+#define __DMA_H__
+
+#include <linux/list.h>
+
+#ifndef	CONFIG_ARCH_DMA_PIO_WORDS
+#define	DMA_PIO_WORDS		15
+#else
+#define	DMA_PIO_WORDS		CONFIG_ARCH_DMA_PIO_WORDS
+#endif
+
+#define MXS_DMA_ALIGNMENT	32
+
+/*
+ * MXS DMA channels
+ */
+enum {
+	MXS_DMA_CHANNEL_AHB_APBH_SSP0 = 0,
+	MXS_DMA_CHANNEL_AHB_APBH_SSP1,
+	MXS_DMA_CHANNEL_AHB_APBH_SSP2,
+	MXS_DMA_CHANNEL_AHB_APBH_SSP3,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI0,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI1,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI2,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI3,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI4,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI5,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI6,
+	MXS_DMA_CHANNEL_AHB_APBH_GPMI7,
+	MXS_DMA_CHANNEL_AHB_APBH_SSP,
+	MXS_MAX_DMA_CHANNELS,
+};
+
+/*
+ * MXS DMA hardware command.
+ *
+ * This structure describes the in-memory layout of an entire DMA command,
+ * including space for the maximum number of PIO accesses. See the appropriate
+ * reference manual for a detailed description of what these fields mean to the
+ * DMA hardware.
+ */
+#define	MXS_DMA_DESC_COMMAND_MASK	0x3
+#define	MXS_DMA_DESC_COMMAND_OFFSET	0
+#define	MXS_DMA_DESC_COMMAND_NO_DMAXFER	0x0
+#define	MXS_DMA_DESC_COMMAND_DMA_WRITE	0x1
+#define	MXS_DMA_DESC_COMMAND_DMA_READ	0x2
+#define	MXS_DMA_DESC_COMMAND_DMA_SENSE	0x3
+#define	MXS_DMA_DESC_CHAIN		(1 << 2)
+#define	MXS_DMA_DESC_IRQ		(1 << 3)
+#define	MXS_DMA_DESC_NAND_LOCK		(1 << 4)
+#define	MXS_DMA_DESC_NAND_WAIT_4_READY	(1 << 5)
+#define	MXS_DMA_DESC_DEC_SEM		(1 << 6)
+#define	MXS_DMA_DESC_WAIT4END		(1 << 7)
+#define	MXS_DMA_DESC_HALT_ON_TERMINATE	(1 << 8)
+#define	MXS_DMA_DESC_TERMINATE_FLUSH	(1 << 9)
+#define	MXS_DMA_DESC_PIO_WORDS_MASK	(0xf << 12)
+#define	MXS_DMA_DESC_PIO_WORDS_OFFSET	12
+#define	MXS_DMA_DESC_BYTES_MASK		(0xffff << 16)
+#define	MXS_DMA_DESC_BYTES_OFFSET	16
+
+struct mxs_dma_cmd {
+	unsigned long		next;
+	unsigned long		data;
+	union {
+		dma_addr_t	address;
+		unsigned long	alternate;
+	};
+	unsigned long		pio_words[DMA_PIO_WORDS];
+};
+
+/*
+ * MXS DMA command descriptor.
+ *
+ * This structure incorporates an MXS DMA hardware command structure, along
+ * with metadata.
+ */
+#define	MXS_DMA_DESC_FIRST	(1 << 0)
+#define	MXS_DMA_DESC_LAST	(1 << 1)
+#define	MXS_DMA_DESC_READY	(1 << 31)
+
+struct mxs_dma_desc {
+	struct mxs_dma_cmd	cmd;
+	unsigned int		flags;
+	dma_addr_t		address;
+	void			*buffer;
+	struct list_head	node;
+};
+
+/**
+ * MXS DMA channel
+ *
+ * This structure represents a single DMA channel. The MXS platform code
+ * maintains an array of these structures to represent every DMA channel in the
+ * system (see mxs_dma_channels).
+ */
+#define	MXS_DMA_FLAGS_IDLE	0
+#define	MXS_DMA_FLAGS_BUSY	(1 << 0)
+#define	MXS_DMA_FLAGS_FREE	0
+#define	MXS_DMA_FLAGS_ALLOCATED	(1 << 16)
+#define	MXS_DMA_FLAGS_VALID	(1 << 31)
+
+struct mxs_dma_chan {
+	const char *name;
+	unsigned long dev;
+	struct mxs_dma_device *dma;
+	unsigned int flags;
+	unsigned int active_num;
+	unsigned int pending_num;
+	struct list_head active;
+	struct list_head done;
+};
+
+/* Hardware management ops */
+int mxs_dma_enable(int channel);
+int mxs_dma_disable(int channel);
+int mxs_dma_reset(int channel);
+int mxs_dma_freeze(int channel);
+int mxs_dma_unfreeze(int channel);
+int mxs_dma_read_semaphore(int channel);
+int mxs_dma_enable_irq(int channel, int enable);
+int mxs_dma_irq_is_pending(int channel);
+int mxs_dma_ack_irq(int channel);
+
+/* Channel management ops */
+int mxs_dma_request(int channel);
+int mxs_dma_release(int channel);
+
+/* Descriptor management ops */
+struct mxs_dma_desc *mxs_dma_desc_alloc(void);
+void mxs_dma_desc_free(struct mxs_dma_desc *);
+
+unsigned int mxs_dma_cmd_address(struct mxs_dma_desc *desc);
+int mxs_dma_desc_pending(struct mxs_dma_desc *pdesc);
+
+int mxs_dma_desc_append(int channel, struct mxs_dma_desc *pdesc);
+
+int mxs_dma_get_finished(int channel, struct list_head *head);
+int mxs_dma_finish(int channel, struct list_head *head);
+
+int mxs_dma_wait_complete(uint32_t timeout, unsigned int chan);
+int mxs_dma_go(int chan);
+
+int mxs_dma_init(void);
+
+#endif	/* __DMA_H__ */

arch/arm/include/asm/arch-mx28/imx-regs.h +1 -0

index 32bfd7e..9561b5e 100644
@@ -23,6 +23,7 @@
 #ifndef __IMX_REGS_H__
 #define __IMX_REGS_H__
 
+#include <asm/arch/regs-apbh.h>
 #include <asm/arch/regs-base.h>
 #include <asm/arch/regs-bch.h>
 #include <asm/arch/regs-clkctrl.h>

arch/arm/include/asm/arch-mx28/regs-apbh.h new file +466 -0

new file mode 100644
index 0000000..a7fa1ec
@@ -0,0 +1,466 @@
+/*
+ * Freescale i.MX28 APBH Register Definitions
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Based on code from LTIB:
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#ifndef __REGS_APBH_H__
+#define __REGS_APBH_H__
+
+#include <asm/arch/regs-common.h>
+
+#ifndef	__ASSEMBLY__
+struct mx28_apbh_regs {
+	mx28_reg(hw_apbh_ctrl0)
+	mx28_reg(hw_apbh_ctrl1)
+	mx28_reg(hw_apbh_ctrl2)
+	mx28_reg(hw_apbh_channel_ctrl)
+	mx28_reg(hw_apbh_devsel)
+	mx28_reg(hw_apbh_dma_burst_size)
+	mx28_reg(hw_apbh_debug)
+
+	uint32_t	reserved[36];
+
+	union {
+	struct {
+		mx28_reg(hw_apbh_ch_curcmdar)
+		mx28_reg(hw_apbh_ch_nxtcmdar)
+		mx28_reg(hw_apbh_ch_cmd)
+		mx28_reg(hw_apbh_ch_bar)
+		mx28_reg(hw_apbh_ch_sema)
+		mx28_reg(hw_apbh_ch_debug1)
+		mx28_reg(hw_apbh_ch_debug2)
+	} ch[16];
+	struct {
+		mx28_reg(hw_apbh_ch0_curcmdar)
+		mx28_reg(hw_apbh_ch0_nxtcmdar)
+		mx28_reg(hw_apbh_ch0_cmd)
+		mx28_reg(hw_apbh_ch0_bar)
+		mx28_reg(hw_apbh_ch0_sema)
+		mx28_reg(hw_apbh_ch0_debug1)
+		mx28_reg(hw_apbh_ch0_debug2)
+		mx28_reg(hw_apbh_ch1_curcmdar)
+		mx28_reg(hw_apbh_ch1_nxtcmdar)
+		mx28_reg(hw_apbh_ch1_cmd)
+		mx28_reg(hw_apbh_ch1_bar)
+		mx28_reg(hw_apbh_ch1_sema)
+		mx28_reg(hw_apbh_ch1_debug1)
+		mx28_reg(hw_apbh_ch1_debug2)
+		mx28_reg(hw_apbh_ch2_curcmdar)
+		mx28_reg(hw_apbh_ch2_nxtcmdar)
+		mx28_reg(hw_apbh_ch2_cmd)
+		mx28_reg(hw_apbh_ch2_bar)
+		mx28_reg(hw_apbh_ch2_sema)
+		mx28_reg(hw_apbh_ch2_debug1)
+		mx28_reg(hw_apbh_ch2_debug2)
+		mx28_reg(hw_apbh_ch3_curcmdar)
+		mx28_reg(hw_apbh_ch3_nxtcmdar)
+		mx28_reg(hw_apbh_ch3_cmd)
+		mx28_reg(hw_apbh_ch3_bar)
+		mx28_reg(hw_apbh_ch3_sema)
+		mx28_reg(hw_apbh_ch3_debug1)
+		mx28_reg(hw_apbh_ch3_debug2)
+		mx28_reg(hw_apbh_ch4_curcmdar)
+		mx28_reg(hw_apbh_ch4_nxtcmdar)
+		mx28_reg(hw_apbh_ch4_cmd)
+		mx28_reg(hw_apbh_ch4_bar)
+		mx28_reg(hw_apbh_ch4_sema)
+		mx28_reg(hw_apbh_ch4_debug1)
+		mx28_reg(hw_apbh_ch4_debug2)
+		mx28_reg(hw_apbh_ch5_curcmdar)
+		mx28_reg(hw_apbh_ch5_nxtcmdar)
+		mx28_reg(hw_apbh_ch5_cmd)
+		mx28_reg(hw_apbh_ch5_bar)
+		mx28_reg(hw_apbh_ch5_sema)
+		mx28_reg(hw_apbh_ch5_debug1)
+		mx28_reg(hw_apbh_ch5_debug2)
+		mx28_reg(hw_apbh_ch6_curcmdar)
+		mx28_reg(hw_apbh_ch6_nxtcmdar)
+		mx28_reg(hw_apbh_ch6_cmd)
+		mx28_reg(hw_apbh_ch6_bar)
+		mx28_reg(hw_apbh_ch6_sema)
+		mx28_reg(hw_apbh_ch6_debug1)
+		mx28_reg(hw_apbh_ch6_debug2)
+		mx28_reg(hw_apbh_ch7_curcmdar)
+		mx28_reg(hw_apbh_ch7_nxtcmdar)
+		mx28_reg(hw_apbh_ch7_cmd)
+		mx28_reg(hw_apbh_ch7_bar)
+		mx28_reg(hw_apbh_ch7_sema)
+		mx28_reg(hw_apbh_ch7_debug1)
+		mx28_reg(hw_apbh_ch7_debug2)
+		mx28_reg(hw_apbh_ch8_curcmdar)
+		mx28_reg(hw_apbh_ch8_nxtcmdar)
+		mx28_reg(hw_apbh_ch8_cmd)
+		mx28_reg(hw_apbh_ch8_bar)
+		mx28_reg(hw_apbh_ch8_sema)
+		mx28_reg(hw_apbh_ch8_debug1)
+		mx28_reg(hw_apbh_ch8_debug2)
+		mx28_reg(hw_apbh_ch9_curcmdar)
+		mx28_reg(hw_apbh_ch9_nxtcmdar)
+		mx28_reg(hw_apbh_ch9_cmd)
+		mx28_reg(hw_apbh_ch9_bar)
+		mx28_reg(hw_apbh_ch9_sema)
+		mx28_reg(hw_apbh_ch9_debug1)
+		mx28_reg(hw_apbh_ch9_debug2)
+		mx28_reg(hw_apbh_ch10_curcmdar)
+		mx28_reg(hw_apbh_ch10_nxtcmdar)
+		mx28_reg(hw_apbh_ch10_cmd)
+		mx28_reg(hw_apbh_ch10_bar)
+		mx28_reg(hw_apbh_ch10_sema)
+		mx28_reg(hw_apbh_ch10_debug1)
+		mx28_reg(hw_apbh_ch10_debug2)
+		mx28_reg(hw_apbh_ch11_curcmdar)
+		mx28_reg(hw_apbh_ch11_nxtcmdar)
+		mx28_reg(hw_apbh_ch11_cmd)
+		mx28_reg(hw_apbh_ch11_bar)
+		mx28_reg(hw_apbh_ch11_sema)
+		mx28_reg(hw_apbh_ch11_debug1)
+		mx28_reg(hw_apbh_ch11_debug2)
+		mx28_reg(hw_apbh_ch12_curcmdar)
+		mx28_reg(hw_apbh_ch12_nxtcmdar)
+		mx28_reg(hw_apbh_ch12_cmd)
+		mx28_reg(hw_apbh_ch12_bar)
+		mx28_reg(hw_apbh_ch12_sema)
+		mx28_reg(hw_apbh_ch12_debug1)
+		mx28_reg(hw_apbh_ch12_debug2)
+		mx28_reg(hw_apbh_ch13_curcmdar)
+		mx28_reg(hw_apbh_ch13_nxtcmdar)
+		mx28_reg(hw_apbh_ch13_cmd)
+		mx28_reg(hw_apbh_ch13_bar)
+		mx28_reg(hw_apbh_ch13_sema)
+		mx28_reg(hw_apbh_ch13_debug1)
+		mx28_reg(hw_apbh_ch13_debug2)
+		mx28_reg(hw_apbh_ch14_curcmdar)
+		mx28_reg(hw_apbh_ch14_nxtcmdar)
+		mx28_reg(hw_apbh_ch14_cmd)
+		mx28_reg(hw_apbh_ch14_bar)
+		mx28_reg(hw_apbh_ch14_sema)
+		mx28_reg(hw_apbh_ch14_debug1)
+		mx28_reg(hw_apbh_ch14_debug2)
+		mx28_reg(hw_apbh_ch15_curcmdar)
+		mx28_reg(hw_apbh_ch15_nxtcmdar)
+		mx28_reg(hw_apbh_ch15_cmd)
+		mx28_reg(hw_apbh_ch15_bar)
+		mx28_reg(hw_apbh_ch15_sema)
+		mx28_reg(hw_apbh_ch15_debug1)
+		mx28_reg(hw_apbh_ch15_debug2)
+	};
+	};
+	mx28_reg(hw_apbh_version)
+};
+#endif
+
+#define	APBH_CTRL0_SFTRST				(1 << 31)
+#define	APBH_CTRL0_CLKGATE				(1 << 30)
+#define	APBH_CTRL0_AHB_BURST8_EN			(1 << 29)
+#define	APBH_CTRL0_APB_BURST_EN				(1 << 28)
+#define	APBH_CTRL0_RSVD0_MASK				(0xfff << 16)
+#define	APBH_CTRL0_RSVD0_OFFSET				16
+#define	APBH_CTRL0_CLKGATE_CHANNEL_MASK			0xffff
+#define	APBH_CTRL0_CLKGATE_CHANNEL_OFFSET		0
+#define	APBH_CTRL0_CLKGATE_CHANNEL_SSP0			0x0001
+#define	APBH_CTRL0_CLKGATE_CHANNEL_SSP1			0x0002
+#define	APBH_CTRL0_CLKGATE_CHANNEL_SSP2			0x0004
+#define	APBH_CTRL0_CLKGATE_CHANNEL_SSP3			0x0008
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND0		0x0010
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND1		0x0020
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND2		0x0040
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND3		0x0080
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND4		0x0100
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND5		0x0200
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND6		0x0400
+#define	APBH_CTRL0_CLKGATE_CHANNEL_NAND7		0x0800
+#define	APBH_CTRL0_CLKGATE_CHANNEL_HSADC		0x1000
+#define	APBH_CTRL0_CLKGATE_CHANNEL_LCDIF		0x2000
+
+#define	APBH_CTRL1_CH15_CMDCMPLT_IRQ_EN			(1 << 31)
+#define	APBH_CTRL1_CH14_CMDCMPLT_IRQ_EN			(1 << 30)
+#define	APBH_CTRL1_CH13_CMDCMPLT_IRQ_EN			(1 << 29)
+#define	APBH_CTRL1_CH12_CMDCMPLT_IRQ_EN			(1 << 28)
+#define	APBH_CTRL1_CH11_CMDCMPLT_IRQ_EN			(1 << 27)
+#define	APBH_CTRL1_CH10_CMDCMPLT_IRQ_EN			(1 << 26)
+#define	APBH_CTRL1_CH9_CMDCMPLT_IRQ_EN			(1 << 25)
+#define	APBH_CTRL1_CH8_CMDCMPLT_IRQ_EN			(1 << 24)
+#define	APBH_CTRL1_CH7_CMDCMPLT_IRQ_EN			(1 << 23)
+#define	APBH_CTRL1_CH6_CMDCMPLT_IRQ_EN			(1 << 22)
+#define	APBH_CTRL1_CH5_CMDCMPLT_IRQ_EN			(1 << 21)
+#define	APBH_CTRL1_CH4_CMDCMPLT_IRQ_EN			(1 << 20)
+#define	APBH_CTRL1_CH3_CMDCMPLT_IRQ_EN			(1 << 19)
+#define	APBH_CTRL1_CH2_CMDCMPLT_IRQ_EN			(1 << 18)
+#define	APBH_CTRL1_CH1_CMDCMPLT_IRQ_EN			(1 << 17)
+#define	APBH_CTRL1_CH0_CMDCMPLT_IRQ_EN			(1 << 16)
+#define	APBH_CTRL1_CH_CMDCMPLT_IRQ_EN_OFFSET		16
+#define	APBH_CTRL1_CH_CMDCMPLT_IRQ_EN_MASK		(0xffff << 16)
+#define	APBH_CTRL1_CH15_CMDCMPLT_IRQ			(1 << 15)
+#define	APBH_CTRL1_CH14_CMDCMPLT_IRQ			(1 << 14)
+#define	APBH_CTRL1_CH13_CMDCMPLT_IRQ			(1 << 13)
+#define	APBH_CTRL1_CH12_CMDCMPLT_IRQ			(1 << 12)
+#define	APBH_CTRL1_CH11_CMDCMPLT_IRQ			(1 << 11)
+#define	APBH_CTRL1_CH10_CMDCMPLT_IRQ			(1 << 10)
+#define	APBH_CTRL1_CH9_CMDCMPLT_IRQ			(1 << 9)
+#define	APBH_CTRL1_CH8_CMDCMPLT_IRQ			(1 << 8)
+#define	APBH_CTRL1_CH7_CMDCMPLT_IRQ			(1 << 7)
+#define	APBH_CTRL1_CH6_CMDCMPLT_IRQ			(1 << 6)
+#define	APBH_CTRL1_CH5_CMDCMPLT_IRQ			(1 << 5)
+#define	APBH_CTRL1_CH4_CMDCMPLT_IRQ			(1 << 4)
+#define	APBH_CTRL1_CH3_CMDCMPLT_IRQ			(1 << 3)
+#define	APBH_CTRL1_CH2_CMDCMPLT_IRQ			(1 << 2)
+#define	APBH_CTRL1_CH1_CMDCMPLT_IRQ			(1 << 1)
+#define	APBH_CTRL1_CH0_CMDCMPLT_IRQ			(1 << 0)
+
+#define	APBH_CTRL2_CH15_ERROR_STATUS			(1 << 31)
+#define	APBH_CTRL2_CH14_ERROR_STATUS			(1 << 30)
+#define	APBH_CTRL2_CH13_ERROR_STATUS			(1 << 29)
+#define	APBH_CTRL2_CH12_ERROR_STATUS			(1 << 28)
+#define	APBH_CTRL2_CH11_ERROR_STATUS			(1 << 27)
+#define	APBH_CTRL2_CH10_ERROR_STATUS			(1 << 26)
+#define	APBH_CTRL2_CH9_ERROR_STATUS			(1 << 25)
+#define	APBH_CTRL2_CH8_ERROR_STATUS			(1 << 24)
+#define	APBH_CTRL2_CH7_ERROR_STATUS			(1 << 23)
+#define	APBH_CTRL2_CH6_ERROR_STATUS			(1 << 22)
+#define	APBH_CTRL2_CH5_ERROR_STATUS			(1 << 21)
+#define	APBH_CTRL2_CH4_ERROR_STATUS			(1 << 20)
+#define	APBH_CTRL2_CH3_ERROR_STATUS			(1 << 19)
+#define	APBH_CTRL2_CH2_ERROR_STATUS			(1 << 18)
+#define	APBH_CTRL2_CH1_ERROR_STATUS			(1 << 17)
+#define	APBH_CTRL2_CH0_ERROR_STATUS			(1 << 16)
+#define	APBH_CTRL2_CH15_ERROR_IRQ			(1 << 15)
+#define	APBH_CTRL2_CH14_ERROR_IRQ			(1 << 14)
+#define	APBH_CTRL2_CH13_ERROR_IRQ			(1 << 13)
+#define	APBH_CTRL2_CH12_ERROR_IRQ			(1 << 12)
+#define	APBH_CTRL2_CH11_ERROR_IRQ			(1 << 11)
+#define	APBH_CTRL2_CH10_ERROR_IRQ			(1 << 10)
+#define	APBH_CTRL2_CH9_ERROR_IRQ			(1 << 9)
+#define	APBH_CTRL2_CH8_ERROR_IRQ			(1 << 8)
+#define	APBH_CTRL2_CH7_ERROR_IRQ			(1 << 7)
+#define	APBH_CTRL2_CH6_ERROR_IRQ			(1 << 6)
+#define	APBH_CTRL2_CH5_ERROR_IRQ			(1 << 5)
+#define	APBH_CTRL2_CH4_ERROR_IRQ			(1 << 4)
+#define	APBH_CTRL2_CH3_ERROR_IRQ			(1 << 3)
+#define	APBH_CTRL2_CH2_ERROR_IRQ			(1 << 2)
+#define	APBH_CTRL2_CH1_ERROR_IRQ			(1 << 1)
+#define	APBH_CTRL2_CH0_ERROR_IRQ			(1 << 0)
+
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_MASK		(0xffff << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_OFFSET		16
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_SSP0		(0x0001 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_SSP1		(0x0002 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_SSP2		(0x0004 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_SSP3		(0x0008 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND0		(0x0010 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND1		(0x0020 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND2		(0x0040 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND3		(0x0080 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND4		(0x0100 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND5		(0x0200 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND6		(0x0400 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_NAND7		(0x0800 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_HSADC		(0x1000 << 16)
+#define	APBH_CHANNEL_CTRL_RESET_CHANNEL_LCDIF		(0x2000 << 16)
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_MASK		0xffff
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_OFFSET		0
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_SSP0		0x0001
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_SSP1		0x0002
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_SSP2		0x0004
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_SSP3		0x0008
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND0		0x0010
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND1		0x0020
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND2		0x0040
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND3		0x0080
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND4		0x0100
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND5		0x0200
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND6		0x0400
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_NAND7		0x0800
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_HSADC		0x1000
+#define	APBH_CHANNEL_CTRL_FREEZE_CHANNEL_LCDIF		0x2000
+
+#define	APBH_DEVSEL_CH15_MASK				(0x3 << 30)
+#define	APBH_DEVSEL_CH15_OFFSET				30
+#define	APBH_DEVSEL_CH14_MASK				(0x3 << 28)
+#define	APBH_DEVSEL_CH14_OFFSET				28
+#define	APBH_DEVSEL_CH13_MASK				(0x3 << 26)
+#define	APBH_DEVSEL_CH13_OFFSET				26
+#define	APBH_DEVSEL_CH12_MASK				(0x3 << 24)
+#define	APBH_DEVSEL_CH12_OFFSET				24
+#define	APBH_DEVSEL_CH11_MASK				(0x3 << 22)
+#define	APBH_DEVSEL_CH11_OFFSET				22
+#define	APBH_DEVSEL_CH10_MASK				(0x3 << 20)
+#define	APBH_DEVSEL_CH10_OFFSET				20
+#define	APBH_DEVSEL_CH9_MASK				(0x3 << 18)
+#define	APBH_DEVSEL_CH9_OFFSET				18
+#define	APBH_DEVSEL_CH8_MASK				(0x3 << 16)
+#define	APBH_DEVSEL_CH8_OFFSET				16
+#define	APBH_DEVSEL_CH7_MASK				(0x3 << 14)
+#define	APBH_DEVSEL_CH7_OFFSET				14
+#define	APBH_DEVSEL_CH6_MASK				(0x3 << 12)
+#define	APBH_DEVSEL_CH6_OFFSET				12
+#define	APBH_DEVSEL_CH5_MASK				(0x3 << 10)
+#define	APBH_DEVSEL_CH5_OFFSET				10
+#define	APBH_DEVSEL_CH4_MASK				(0x3 << 8)
+#define	APBH_DEVSEL_CH4_OFFSET				8
+#define	APBH_DEVSEL_CH3_MASK				(0x3 << 6)
+#define	APBH_DEVSEL_CH3_OFFSET				6
+#define	APBH_DEVSEL_CH2_MASK				(0x3 << 4)
+#define	APBH_DEVSEL_CH2_OFFSET				4
+#define	APBH_DEVSEL_CH1_MASK				(0x3 << 2)
+#define	APBH_DEVSEL_CH1_OFFSET				2
+#define	APBH_DEVSEL_CH0_MASK				(0x3 << 0)
+#define	APBH_DEVSEL_CH0_OFFSET				0
+
+#define	APBH_DMA_BURST_SIZE_CH15_MASK			(0x3 << 30)
+#define	APBH_DMA_BURST_SIZE_CH15_OFFSET			30
+#define	APBH_DMA_BURST_SIZE_CH14_MASK			(0x3 << 28)
+#define	APBH_DMA_BURST_SIZE_CH14_OFFSET			28
+#define	APBH_DMA_BURST_SIZE_CH13_MASK			(0x3 << 26)
+#define	APBH_DMA_BURST_SIZE_CH13_OFFSET			26
+#define	APBH_DMA_BURST_SIZE_CH12_MASK			(0x3 << 24)
+#define	APBH_DMA_BURST_SIZE_CH12_OFFSET			24
+#define	APBH_DMA_BURST_SIZE_CH11_MASK			(0x3 << 22)
+#define	APBH_DMA_BURST_SIZE_CH11_OFFSET			22
+#define	APBH_DMA_BURST_SIZE_CH10_MASK			(0x3 << 20)
+#define	APBH_DMA_BURST_SIZE_CH10_OFFSET			20
+#define	APBH_DMA_BURST_SIZE_CH9_MASK			(0x3 << 18)
+#define	APBH_DMA_BURST_SIZE_CH9_OFFSET			18
+#define	APBH_DMA_BURST_SIZE_CH8_MASK			(0x3 << 16)
+#define	APBH_DMA_BURST_SIZE_CH8_OFFSET			16
+#define	APBH_DMA_BURST_SIZE_CH8_BURST0			(0x0 << 16)
+#define	APBH_DMA_BURST_SIZE_CH8_BURST4			(0x1 << 16)
+#define	APBH_DMA_BURST_SIZE_CH8_BURST8			(0x2 << 16)
+#define	APBH_DMA_BURST_SIZE_CH7_MASK			(0x3 << 14)
+#define	APBH_DMA_BURST_SIZE_CH7_OFFSET			14
+#define	APBH_DMA_BURST_SIZE_CH6_MASK			(0x3 << 12)
+#define	APBH_DMA_BURST_SIZE_CH6_OFFSET			12
+#define	APBH_DMA_BURST_SIZE_CH5_MASK			(0x3 << 10)
+#define	APBH_DMA_BURST_SIZE_CH5_OFFSET			10
+#define	APBH_DMA_BURST_SIZE_CH4_MASK			(0x3 << 8)
+#define	APBH_DMA_BURST_SIZE_CH4_OFFSET			8
+#define	APBH_DMA_BURST_SIZE_CH3_MASK			(0x3 << 6)
+#define	APBH_DMA_BURST_SIZE_CH3_OFFSET			6
+#define	APBH_DMA_BURST_SIZE_CH3_BURST0			(0x0 << 6)
+#define	APBH_DMA_BURST_SIZE_CH3_BURST4			(0x1 << 6)
+#define	APBH_DMA_BURST_SIZE_CH3_BURST8			(0x2 << 6)
+
+#define	APBH_DMA_BURST_SIZE_CH2_MASK			(0x3 << 4)
+#define	APBH_DMA_BURST_SIZE_CH2_OFFSET			4
+#define	APBH_DMA_BURST_SIZE_CH2_BURST0			(0x0 << 4)
+#define	APBH_DMA_BURST_SIZE_CH2_BURST4			(0x1 << 4)
+#define	APBH_DMA_BURST_SIZE_CH2_BURST8			(0x2 << 4)
+#define	APBH_DMA_BURST_SIZE_CH1_MASK			(0x3 << 2)
+#define	APBH_DMA_BURST_SIZE_CH1_OFFSET			2
+#define	APBH_DMA_BURST_SIZE_CH1_BURST0			(0x0 << 2)
+#define	APBH_DMA_BURST_SIZE_CH1_BURST4			(0x1 << 2)
+#define	APBH_DMA_BURST_SIZE_CH1_BURST8			(0x2 << 2)
+
+#define	APBH_DMA_BURST_SIZE_CH0_MASK			0x3
+#define	APBH_DMA_BURST_SIZE_CH0_OFFSET			0
+#define	APBH_DMA_BURST_SIZE_CH0_BURST0			0x0
+#define	APBH_DMA_BURST_SIZE_CH0_BURST4			0x1
+#define	APBH_DMA_BURST_SIZE_CH0_BURST8			0x2
+
+#define	APBH_DEBUG_GPMI_ONE_FIFO			(1 << 0)
+
+#define	APBH_CHn_CURCMDAR_CMD_ADDR_MASK			0xffffffff
+#define	APBH_CHn_CURCMDAR_CMD_ADDR_OFFSET		0
+
+#define	APBH_CHn_NXTCMDAR_CMD_ADDR_MASK			0xffffffff
+#define	APBH_CHn_NXTCMDAR_CMD_ADDR_OFFSET		0
+
+#define	APBH_CHn_CMD_XFER_COUNT_MASK			(0xffff << 16)
+#define	APBH_CHn_CMD_XFER_COUNT_OFFSET			16
+#define	APBH_CHn_CMD_CMDWORDS_MASK			(0xf << 12)
+#define	APBH_CHn_CMD_CMDWORDS_OFFSET			12
+#define	APBH_CHn_CMD_HALTONTERMINATE			(1 << 8)
+#define	APBH_CHn_CMD_WAIT4ENDCMD			(1 << 7)
+#define	APBH_CHn_CMD_SEMAPHORE				(1 << 6)
+#define	APBH_CHn_CMD_NANDWAIT4READY			(1 << 5)
+#define	APBH_CHn_CMD_NANDLOCK				(1 << 4)
+#define	APBH_CHn_CMD_IRQONCMPLT				(1 << 3)
+#define	APBH_CHn_CMD_CHAIN				(1 << 2)
+#define	APBH_CHn_CMD_COMMAND_MASK			0x3
+#define	APBH_CHn_CMD_COMMAND_OFFSET			0
+#define	APBH_CHn_CMD_COMMAND_NO_DMA_XFER		0x0
+#define	APBH_CHn_CMD_COMMAND_DMA_WRITE			0x1
+#define	APBH_CHn_CMD_COMMAND_DMA_READ			0x2
+#define	APBH_CHn_CMD_COMMAND_DMA_SENSE			0x3
+
+#define	APBH_CHn_BAR_ADDRESS_MASK			0xffffffff
+#define	APBH_CHn_BAR_ADDRESS_OFFSET			0
+
+#define	APBH_CHn_SEMA_RSVD2_MASK			(0xff << 24)
+#define	APBH_CHn_SEMA_RSVD2_OFFSET			24
+#define	APBH_CHn_SEMA_PHORE_MASK			(0xff << 16)
+#define	APBH_CHn_SEMA_PHORE_OFFSET			16
+#define	APBH_CHn_SEMA_RSVD1_MASK			(0xff << 8)
+#define	APBH_CHn_SEMA_RSVD1_OFFSET			8
+#define	APBH_CHn_SEMA_INCREMENT_SEMA_MASK		(0xff << 0)
+#define	APBH_CHn_SEMA_INCREMENT_SEMA_OFFSET		0
+
+#define	APBH_CHn_DEBUG1_REQ				(1 << 31)
+#define	APBH_CHn_DEBUG1_BURST				(1 << 30)
+#define	APBH_CHn_DEBUG1_KICK				(1 << 29)
+#define	APBH_CHn_DEBUG1_END				(1 << 28)
+#define	APBH_CHn_DEBUG1_SENSE				(1 << 27)
+#define	APBH_CHn_DEBUG1_READY				(1 << 26)
+#define	APBH_CHn_DEBUG1_LOCK				(1 << 25)
+#define	APBH_CHn_DEBUG1_NEXTCMDADDRVALID		(1 << 24)
+#define	APBH_CHn_DEBUG1_RD_FIFO_EMPTY			(1 << 23)
+#define	APBH_CHn_DEBUG1_RD_FIFO_FULL			(1 << 22)
+#define	APBH_CHn_DEBUG1_WR_FIFO_EMPTY			(1 << 21)
+#define	APBH_CHn_DEBUG1_WR_FIFO_FULL			(1 << 20)
+#define	APBH_CHn_DEBUG1_RSVD1_MASK			(0x7fff << 5)
+#define	APBH_CHn_DEBUG1_RSVD1_OFFSET			5
+#define	APBH_CHn_DEBUG1_STATEMACHINE_MASK		0x1f
+#define	APBH_CHn_DEBUG1_STATEMACHINE_OFFSET		0
+#define	APBH_CHn_DEBUG1_STATEMACHINE_IDLE		0x00
+#define	APBH_CHn_DEBUG1_STATEMACHINE_REQ_CMD1		0x01
+#define	APBH_CHn_DEBUG1_STATEMACHINE_REQ_CMD3		0x02
+#define	APBH_CHn_DEBUG1_STATEMACHINE_REQ_CMD2		0x03
+#define	APBH_CHn_DEBUG1_STATEMACHINE_XFER_DECODE	0x04
+#define	APBH_CHn_DEBUG1_STATEMACHINE_REQ_WAIT		0x05
+#define	APBH_CHn_DEBUG1_STATEMACHINE_REQ_CMD4		0x06
+#define	APBH_CHn_DEBUG1_STATEMACHINE_PIO_REQ		0x07
+#define	APBH_CHn_DEBUG1_STATEMACHINE_READ_FLUSH		0x08
+#define	APBH_CHn_DEBUG1_STATEMACHINE_READ_WAIT		0x09
+#define	APBH_CHn_DEBUG1_STATEMACHINE_WRITE		0x0c
+#define	APBH_CHn_DEBUG1_STATEMACHINE_READ_REQ		0x0d
+#define	APBH_CHn_DEBUG1_STATEMACHINE_CHECK_CHAIN	0x0e
+#define	APBH_CHn_DEBUG1_STATEMACHINE_XFER_COMPLETE	0x0f
+#define	APBH_CHn_DEBUG1_STATEMACHINE_TERMINATE		0x14
+#define	APBH_CHn_DEBUG1_STATEMACHINE_WAIT_END		0x15
+#define	APBH_CHn_DEBUG1_STATEMACHINE_WRITE_WAIT		0x1c
+#define	APBH_CHn_DEBUG1_STATEMACHINE_HALT_AFTER_TERM	0x1d
+#define	APBH_CHn_DEBUG1_STATEMACHINE_CHECK_WAIT		0x1e
+#define	APBH_CHn_DEBUG1_STATEMACHINE_WAIT_READY		0x1f
+
+#define	APBH_CHn_DEBUG2_APB_BYTES_MASK			(0xffff << 16)
+#define	APBH_CHn_DEBUG2_APB_BYTES_OFFSET		16
+#define	APBH_CHn_DEBUG2_AHB_BYTES_MASK			0xffff
+#define	APBH_CHn_DEBUG2_AHB_BYTES_OFFSET		0
+
+#define	APBH_VERSION_MAJOR_MASK				(0xff << 24)
+#define	APBH_VERSION_MAJOR_OFFSET			24
+#define	APBH_VERSION_MINOR_MASK				(0xff << 16)
+#define	APBH_VERSION_MINOR_OFFSET			16
+#define	APBH_VERSION_STEP_MASK				0xffff
+#define	APBH_VERSION_STEP_OFFSET			0
+
+#endif	/* __REGS_APBH_H__ */

drivers/dma/Makefile +1 -0

index 3d9c9f1..5d864b5 100644
@@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk
 LIB	:= $(obj)libdma.o
 
 COBJS-$(CONFIG_FSLDMAFEC) += MCD_tasksInit.o MCD_dmaApi.o MCD_tasks.o
+COBJS-$(CONFIG_APBH_DMA) += apbh_dma.o
 COBJS-$(CONFIG_FSL_DMA) += fsl_dma.o
 COBJS-$(CONFIG_OMAP3_DMA) += omap3_dma.o
 

drivers/dma/apbh_dma.c new file +681 -0

new file mode 100644
index 0000000..69a1042
@@ -0,0 +1,691 @@
+/*
+ * Freescale i.MX28 APBH DMA driver
+ *
+ * Copyright (C) 2011 Marek Vasut <[email protected]>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Based on code from LTIB:
+ * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/list.h>
+
+#include <common.h>
+#include <malloc.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/dma.h>
+
+static struct mxs_dma_chan mxs_dma_channels[MXS_MAX_DMA_CHANNELS];
+
+/*
+ * Test is the DMA channel is valid channel
+ */
+int mxs_dma_validate_chan(int channel)
+{
+	struct mxs_dma_chan *pchan;
+
+	if ((channel < 0) || (channel >= MXS_MAX_DMA_CHANNELS))
+		return -EINVAL;
+
+	pchan = mxs_dma_channels + channel;
+	if (!(pchan->flags & MXS_DMA_FLAGS_ALLOCATED))
+		return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * Enable a DMA channel.
+ *
+ * If the given channel has any DMA descriptors on its active list, this
+ * function causes the DMA hardware to begin processing them.
+ *
+ * This function marks the DMA channel as "busy," whether or not there are any
+ * descriptors to process.
+ */
+int mxs_dma_enable(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	unsigned int sem;
+	struct mxs_dma_chan *pchan;
+	struct mxs_dma_desc *pdesc;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	pchan = mxs_dma_channels + channel;
+
+	if (pchan->pending_num == 0) {
+		pchan->flags |= MXS_DMA_FLAGS_BUSY;
+		return 0;
+	}
+
+	pdesc = list_first_entry(&pchan->active, struct mxs_dma_desc, node);
+	if (pdesc == NULL)
+		return -EFAULT;
+
+	if (pchan->flags & MXS_DMA_FLAGS_BUSY) {
+		if (!(pdesc->cmd.data & MXS_DMA_DESC_CHAIN))
+			return 0;
+
+		sem = mxs_dma_read_semaphore(channel);
+		if (sem == 0)
+			return 0;
+
+		if (sem == 1) {
+			pdesc = list_entry(pdesc->node.next,
+					   struct mxs_dma_desc, node);
+			writel(mxs_dma_cmd_address(pdesc),
+				&apbh_regs->ch[channel].hw_apbh_ch_nxtcmdar);
+		}
+		writel(pchan->pending_num,
+			&apbh_regs->ch[channel].hw_apbh_ch_sema);
+		pchan->active_num += pchan->pending_num;
+		pchan->pending_num = 0;
+	} else {
+		pchan->active_num += pchan->pending_num;
+		pchan->pending_num = 0;
+		writel(mxs_dma_cmd_address(pdesc),
+			&apbh_regs->ch[channel].hw_apbh_ch_nxtcmdar);
+		writel(pchan->active_num,
+			&apbh_regs->ch[channel].hw_apbh_ch_sema);
+		writel(1 << (channel + APBH_CTRL0_CLKGATE_CHANNEL_OFFSET),
+			&apbh_regs->hw_apbh_ctrl0_clr);
+	}
+
+	pchan->flags |= MXS_DMA_FLAGS_BUSY;
+	return 0;
+}
+
+/*
+ * Disable a DMA channel.
+ *
+ * This function shuts down a DMA channel and marks it as "not busy." Any
+ * descriptors on the active list are immediately moved to the head of the
+ * "done" list, whether or not they have actually been processed by the
+ * hardware. The "ready" flags of these descriptors are NOT cleared, so they
+ * still appear to be active.
+ *
+ * This function immediately shuts down a DMA channel's hardware, aborting any
+ * I/O that may be in progress, potentially leaving I/O hardware in an undefined
+ * state. It is unwise to call this function if there is ANY chance the hardware
+ * is still processing a command.
+ */
+int mxs_dma_disable(int channel)
+{
+	struct mxs_dma_chan *pchan;
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	pchan = mxs_dma_channels + channel;
+
+	if (!(pchan->flags & MXS_DMA_FLAGS_BUSY))
+		return -EINVAL;
+
+	writel(1 << (channel + APBH_CTRL0_CLKGATE_CHANNEL_OFFSET),
+		&apbh_regs->hw_apbh_ctrl0_set);
+
+	pchan->flags &= ~MXS_DMA_FLAGS_BUSY;
+	pchan->active_num = 0;
+	pchan->pending_num = 0;
+	list_splice_init(&pchan->active, &pchan->done);
+
+	return 0;
+}
+
+/*
+ * Resets the DMA channel hardware.
+ */
+int mxs_dma_reset(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	writel(1 << (channel + APBH_CHANNEL_CTRL_RESET_CHANNEL_OFFSET),
+		&apbh_regs->hw_apbh_channel_ctrl_set);
+
+	return 0;
+}
+
+/*
+ * Freeze a DMA channel.
+ *
+ * This function causes the channel to continuously fail arbitration for bus
+ * access, which halts all forward progress without losing any state. A call to
+ * mxs_dma_unfreeze() will cause the channel to continue its current operation
+ * with no ill effect.
+ */
+int mxs_dma_freeze(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	writel(1 << (channel + APBH_CHANNEL_CTRL_FREEZE_CHANNEL_OFFSET),
+		&apbh_regs->hw_apbh_channel_ctrl_set);
+
+	return 0;
+}
+
+/*
+ * Unfreeze a DMA channel.
+ *
+ * This function reverses the effect of mxs_dma_freeze(), enabling the DMA
+ * channel to continue from where it was frozen.
+ */
+int mxs_dma_unfreeze(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	writel(1 << (channel + APBH_CHANNEL_CTRL_FREEZE_CHANNEL_OFFSET),
+		&apbh_regs->hw_apbh_channel_ctrl_clr);
+
+	return 0;
+}
+
+/*
+ * Read a DMA channel's hardware semaphore.
+ *
+ * As used by the MXS platform's DMA software, the DMA channel's hardware
+ * semaphore reflects the number of DMA commands the hardware will process, but
+ * has not yet finished. This is a volatile value read directly from hardware,
+ * so it must be be viewed as immediately stale.
+ *
+ * If the channel is not marked busy, or has finished processing all its
+ * commands, this value should be zero.
+ *
+ * See mxs_dma_append() for details on how DMA command blocks must be configured
+ * to maintain the expected behavior of the semaphore's value.
+ */
+int mxs_dma_read_semaphore(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	uint32_t tmp;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	tmp = readl(&apbh_regs->ch[channel].hw_apbh_ch_sema);
+
+	tmp &= APBH_CHn_SEMA_PHORE_MASK;
+	tmp >>= APBH_CHn_SEMA_PHORE_OFFSET;
+
+	return tmp;
+}
+
+/*
+ * Enable or disable DMA interrupt.
+ *
+ * This function enables the given DMA channel to interrupt the CPU.
+ */
+int mxs_dma_enable_irq(int channel, int enable)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	if (enable)
+		writel(1 << (channel + APBH_CTRL1_CH_CMDCMPLT_IRQ_EN_OFFSET),
+			&apbh_regs->hw_apbh_ctrl1_set);
+	else
+		writel(1 << (channel + APBH_CTRL1_CH_CMDCMPLT_IRQ_EN_OFFSET),
+			&apbh_regs->hw_apbh_ctrl1_clr);
+
+	return 0;
+}
+
+/*
+ * Check if a DMA interrupt is pending.
+ */
+int mxs_dma_irq_is_pending(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	uint32_t tmp;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	tmp = readl(&apbh_regs->hw_apbh_ctrl1);
+	tmp |= readl(&apbh_regs->hw_apbh_ctrl2);
+
+	return (tmp >> channel) & 1;
+}
+
+/*
+ * Clear DMA interrupt.
+ *
+ * The software that is using the DMA channel must register to receive its
+ * interrupts and, when they arrive, must call this function to clear them.
+ */
+int mxs_dma_ack_irq(int channel)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	writel(1 << channel, &apbh_regs->hw_apbh_ctrl1_clr);
+	writel(1 << channel, &apbh_regs->hw_apbh_ctrl2_clr);
+
+	return 0;
+}
+
+/*
+ * Request to reserve a DMA channel
+ */
+int mxs_dma_request(int channel)
+{
+	struct mxs_dma_chan *pchan;
+
+	if ((channel < 0) || (channel >= MXS_MAX_DMA_CHANNELS))
+		return -EINVAL;
+
+	pchan = mxs_dma_channels + channel;
+	if ((pchan->flags & MXS_DMA_FLAGS_VALID) != MXS_DMA_FLAGS_VALID)
+		return -ENODEV;
+
+	if (pchan->flags & MXS_DMA_FLAGS_ALLOCATED)
+		return -EBUSY;
+
+	pchan->flags |= MXS_DMA_FLAGS_ALLOCATED;
+	pchan->active_num = 0;
+	pchan->pending_num = 0;
+
+	INIT_LIST_HEAD(&pchan->active);
+	INIT_LIST_HEAD(&pchan->done);
+
+	return 0;
+}
+
+/*
+ * Release a DMA channel.
+ *
+ * This function releases a DMA channel from its current owner.
+ *
+ * The channel will NOT be released if it's marked "busy" (see
+ * mxs_dma_enable()).
+ */
+int mxs_dma_release(int channel)
+{
+	struct mxs_dma_chan *pchan;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	pchan = mxs_dma_channels + channel;
+
+	if (pchan->flags & MXS_DMA_FLAGS_BUSY)
+		return -EBUSY;
+
+	pchan->dev = 0;
+	pchan->active_num = 0;
+	pchan->pending_num = 0;
+	pchan->flags &= ~MXS_DMA_FLAGS_ALLOCATED;
+
+	return 0;
+}
+
+/*
+ * Allocate DMA descriptor
+ */
+struct mxs_dma_desc *mxs_dma_desc_alloc(void)
+{
+	struct mxs_dma_desc *pdesc;
+
+	pdesc = memalign(MXS_DMA_ALIGNMENT, sizeof(struct mxs_dma_desc));
+
+	if (pdesc == NULL)
+		return NULL;
+
+	memset(pdesc, 0, sizeof(*pdesc));
+	pdesc->address = (dma_addr_t)pdesc;
+
+	return pdesc;
+};
+
+/*
+ * Free DMA descriptor
+ */
+void mxs_dma_desc_free(struct mxs_dma_desc *pdesc)
+{
+	if (pdesc == NULL)
+		return;
+
+	free(pdesc);
+}
+
+/*
+ * Return the address of the command within a descriptor.
+ */
+unsigned int mxs_dma_cmd_address(struct mxs_dma_desc *desc)
+{
+	return desc->address + offsetof(struct mxs_dma_desc, cmd);
+}
+
+/*
+ * Check if descriptor is on a channel's active list.
+ *
+ * This function returns the state of a descriptor's "ready" flag. This flag is
+ * usually set only if the descriptor appears on a channel's active list. The
+ * descriptor may or may not have already been processed by the hardware.
+ *
+ * The "ready" flag is set when the descriptor is submitted to a channel by a
+ * call to mxs_dma_append() or mxs_dma_append_list(). The "ready" flag is
+ * cleared when a processed descriptor is moved off the active list by a call
+ * to mxs_dma_finish(). The "ready" flag is NOT cleared if the descriptor is
+ * aborted by a call to mxs_dma_disable().
+ */
+int mxs_dma_desc_pending(struct mxs_dma_desc *pdesc)
+{
+	return pdesc->flags & MXS_DMA_DESC_READY;
+}
+
+/*
+ * Add a DMA descriptor to a channel.
+ *
+ * If the descriptor list for this channel is not empty, this function sets the
+ * CHAIN bit and the NEXTCMD_ADDR fields in the last descriptor's DMA command so
+ * it will chain to the new descriptor's command.
+ *
+ * Then, this function marks the new descriptor as "ready," adds it to the end
+ * of the active descriptor list, and increments the count of pending
+ * descriptors.
+ *
+ * The MXS platform DMA software imposes some rules on DMA commands to maintain
+ * important invariants. These rules are NOT checked, but they must be carefully
+ * applied by software that uses MXS DMA channels.
+ *
+ * Invariant:
+ *     The DMA channel's hardware semaphore must reflect the number of DMA
+ *     commands the hardware will process, but has not yet finished.
+ *
+ * Explanation:
+ *     A DMA channel begins processing commands when its hardware semaphore is
+ *     written with a value greater than zero, and it stops processing commands
+ *     when the semaphore returns to zero.
+ *
+ *     When a channel finishes a DMA command, it will decrement its semaphore if
+ *     the DECREMENT_SEMAPHORE bit is set in that command's flags bits.
+ *
+ *     In principle, it's not necessary for the DECREMENT_SEMAPHORE to be set,
+ *     unless it suits the purposes of the software. For example, one could
+ *     construct a series of five DMA commands, with the DECREMENT_SEMAPHORE
+ *     bit set only in the last one. Then, setting the DMA channel's hardware
+ *     semaphore to one would cause the entire series of five commands to be
+ *     processed. However, this example would violate the invariant given above.
+ *
+ * Rule:
+ *    ALL DMA commands MUST have the DECREMENT_SEMAPHORE bit set so that the DMA
+ *    channel's hardware semaphore will be decremented EVERY time a command is
+ *    processed.
+ */
+int mxs_dma_desc_append(int channel, struct mxs_dma_desc *pdesc)
+{
+	struct mxs_dma_chan *pchan;
+	struct mxs_dma_desc *last;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	pchan = mxs_dma_channels + channel;
+
+	pdesc->cmd.next = mxs_dma_cmd_address(pdesc);
+	pdesc->flags |= MXS_DMA_DESC_FIRST | MXS_DMA_DESC_LAST;
+
+	if (!list_empty(&pchan->active)) {
+		last = list_entry(pchan->active.prev, struct mxs_dma_desc,
+					node);
+
+		pdesc->flags &= ~MXS_DMA_DESC_FIRST;
+		last->flags &= ~MXS_DMA_DESC_LAST;
+
+		last->cmd.next = mxs_dma_cmd_address(pdesc);
+		last->cmd.data |= MXS_DMA_DESC_CHAIN;
+	}
+	pdesc->flags |= MXS_DMA_DESC_READY;
+	if (pdesc->flags & MXS_DMA_DESC_FIRST)
+		pchan->pending_num++;
+	list_add_tail(&pdesc->node, &pchan->active);
+
+	return ret;
+}
+
+/*
+ * Retrieve processed DMA descriptors.
+ *
+ * This function moves all the descriptors from the DMA channel's "done" list to
+ * the head of the given list.
+ */
+int mxs_dma_get_finished(int channel, struct list_head *head)
+{
+	struct mxs_dma_chan *pchan;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	if (head == NULL)
+		return 0;
+
+	pchan = mxs_dma_channels + channel;
+
+	list_splice(&pchan->done, head);
+
+	return 0;
+}
+
+/*
+ * Clean up processed DMA descriptors.
+ *
+ * This function removes processed DMA descriptors from the "active" list. Pass
+ * in a non-NULL list head to get the descriptors moved to your list. Pass NULL
+ * to get the descriptors moved to the channel's "done" list. Descriptors on
+ * the "done" list can be retrieved with mxs_dma_get_finished().
+ *
+ * This function marks the DMA channel as "not busy" if no unprocessed
+ * descriptors remain on the "active" list.
+ */
+int mxs_dma_finish(int channel, struct list_head *head)
+{
+	int sem;
+	struct mxs_dma_chan *pchan;
+	struct list_head *p, *q;
+	struct mxs_dma_desc *pdesc;
+	int ret;
+
+	ret = mxs_dma_validate_chan(channel);
+	if (ret)
+		return ret;
+
+	pchan = mxs_dma_channels + channel;
+
+	sem = mxs_dma_read_semaphore(channel);
+	if (sem < 0)
+		return sem;
+
+	if (sem == pchan->active_num)
+		return 0;
+
+	list_for_each_safe(p, q, &pchan->active) {
+		if ((pchan->active_num) <= sem)
+			break;
+
+		pdesc = list_entry(p, struct mxs_dma_desc, node);
+		pdesc->flags &= ~MXS_DMA_DESC_READY;
+
+		if (head)
+			list_move_tail(p, head);
+		else
+			list_move_tail(p, &pchan->done);
+
+		if (pdesc->flags & MXS_DMA_DESC_LAST)
+			pchan->active_num--;
+	}
+
+	if (sem == 0)
+		pchan->flags &= ~MXS_DMA_FLAGS_BUSY;
+
+	return 0;
+}
+
+/*
+ * Wait for DMA channel to complete
+ */
+int mxs_dma_wait_complete(uint32_t timeout, unsigned int chan)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	int ret;
+
+	ret = mxs_dma_validate_chan(chan);
+	if (ret)
+		return ret;
+
+	if (mx28_wait_mask_set(&apbh_regs->hw_apbh_ctrl1_reg,
+				1 << chan, timeout)) {
+		ret = -ETIMEDOUT;
+		mxs_dma_reset(chan);
+	}
+
+	return 0;
+}
+
+/*
+ * Execute the DMA channel
+ */
+int mxs_dma_go(int chan)
+{
+	uint32_t timeout = 10000;
+	int ret;
+
+	LIST_HEAD(tmp_desc_list);
+
+	mxs_dma_enable_irq(chan, 1);
+	mxs_dma_enable(chan);
+
+	/* Wait for DMA to finish. */
+	ret = mxs_dma_wait_complete(timeout, chan);
+
+	/* Clear out the descriptors we just ran. */
+	mxs_dma_finish(chan, &tmp_desc_list);
+
+	/* Shut the DMA channel down. */
+	mxs_dma_ack_irq(chan);
+	mxs_dma_reset(chan);
+	mxs_dma_enable_irq(chan, 0);
+	mxs_dma_disable(chan);
+
+	return ret;
+}
+
+/*
+ * Initialize the DMA hardware
+ */
+int mxs_dma_init(void)
+{
+	struct mx28_apbh_regs *apbh_regs =
+		(struct mx28_apbh_regs *)MXS_APBH_BASE;
+	struct mxs_dma_chan *pchan;
+	int ret, channel;
+
+	mx28_reset_block(&apbh_regs->hw_apbh_ctrl0_reg);
+
+#ifdef CONFIG_APBH_DMA_BURST8
+	writel(APBH_CTRL0_AHB_BURST8_EN,
+		&apbh_regs->hw_apbh_ctrl0_set);
+#else
+	writel(APBH_CTRL0_AHB_BURST8_EN,
+		&apbh_regs->hw_apbh_ctrl0_clr);
+#endif
+
+#ifdef CONFIG_APBH_DMA_BURST
+	writel(APBH_CTRL0_APB_BURST_EN,
+		&apbh_regs->hw_apbh_ctrl0_set);
+#else
+	writel(APBH_CTRL0_APB_BURST_EN,
+		&apbh_regs->hw_apbh_ctrl0_clr);
+#endif
+
+	for (channel = 0; channel < MXS_MAX_DMA_CHANNELS; channel++) {
+		pchan = mxs_dma_channels + channel;
+		pchan->flags = MXS_DMA_FLAGS_VALID;
+
+		ret = mxs_dma_request(channel);
+
+		if (ret) {
+			printf("MXS DMA: Can't acquire DMA channel %i\n",
+				channel);
+
+			goto err;
+		}
+
+		mxs_dma_reset(channel);