ASoC drivers for the Freescale MPC8610 SoC

Add the ASoC drivers for the Freescale MPC8610 SoC and the MPC8610 HPCD reference board.

Signed-off-by Timur Tabi <[email protected]>

arch/powerpc/platforms/86xx/mpc8610_hpcd.c +5 -0

+	{ .compatible = "fsl,mpc8610", },
+	{}
+};
+
+static int __init mpc8610_declare_of_platform_devices(void)

Hi Timur,

arch/powerpc/platforms/86xx/mpc8610_hpcd.c line 41

Quoted 11 lines · On Mon, 7 Jan 2008 12:56:43 -0600 Timur Tabi <[email protected]> wrote:

+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c

arch/powerpc/platforms/86xx/mpc8610_hpcd.c +2 -0

@@ -34,9 +34,27 @@
 
 #include <asm/mpic.h>
 
+#include <linux/of_platform.h>
 #include <sysdev/fsl_pci.h>
 #include <sysdev/fsl_soc.h>
 
+static struct of_device_id mpc8610_ids[] = {

__initdata

Quoted 9 lines

arch/powerpc/platforms/86xx/mpc8610_hpcd.c +9 -0

+	{ .compatible = "fsl,mpc8610", },
+	{}
+};
+
+static int __init mpc8610_declare_of_platform_devices(void)
+{
+	if (!machine_is(mpc86xx_hpcd))
+		return 0;
+

arch/powerpc/platforms/86xx/mpc8610_hpcd.c line 56

Quoted 6 lines

arch/powerpc/platforms/86xx/mpc8610_hpcd.c +6 -0

+	/* Without this call, the SSI device driver won't get probed. */
+	of_platform_bus_probe(NULL, mpc8610_ids, NULL);
+
+	return 0;
+}
+device_initcall(mpc8610_declare_of_platform_devices);

We have machine_device_initcall for this now.

Update the MPC8610 HPCD files to support the audio driver. Update booting-without-of.txt with information on the SSI device.

Signed-off-by Timur Tabi <[email protected]>

---

Updated based on comments from mailing lists. Split the patch into two parts.

This patch applies on top of
git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa.git.

 Documentation/powerpc/booting-without-of.txt |   40 ++++++
 arch/powerpc/boot/dts/mpc8610_hpcd.dts       |  110 ++++++++++++++++-
 arch/powerpc/configs/mpc8610_hpcd_defconfig  |  171 +++++++++++++++++++++++++-
 arch/powerpc/platforms/86xx/mpc8610_hpcd.c   |   18 +++
 4 files changed, 335 insertions(+), 4 deletions(-)

Documentation/powerpc/booting-without-of.txt +40 -0

index e9a3cb1..826af91 100644
@@ -53,6 +53,7 @@ Table of Contents
       j) CFI or JEDEC memory-mapped NOR flash
       k) Global Utilities Block
       l) Xilinx IP cores
+      p) Freescale Synchronous Serial Interface
 
   VII - Specifying interrupt information for devices
     1) interrupts property

@@ -2514,6 +2515,45 @@ platforms are moved over to use the flattened-device-tree model.
       Requred properties:
        - current-speed : Baud rate of uartlite
 
+    p) Freescale Synchronous Serial Interface
+
+       The SSI is a serial device that communicates with audio codecs.  It can
+       be programmed in AC97, I2S, left-justified, or right-justified modes.
+
+       Required properties:
+       - compatible      : compatible list, containing "fsl,ssi"
+       - cell-index      : the SSI, <0> = SSI1, <1> = SSI2, and so on
+       - reg             : offset and length of the register set for the device
+       - interrupts      : <a b> where a is the interrupt number and b is a
+                            field that represents an encoding of the sense and
+                           level information for the interrupt.  This should be
+                           encoded based on the information in section 2)
+                           depending on the type of interrupt controller you
+                           have.
+       - interrupt-parent : the phandle for the interrupt controller that
+                            services interrupts for this device.
+       - fsl,mode        : the operating mode for the SSI interface
+                           "i2s-slave" - I2S mode, SSI is clock slave
+                           "i2s-master" - I2S mode, SSI is clock master
+                           "lj-slave" - left-justified mode, SSI is clock slave
+                           "lj-master" - l.j. mode, SSI is clock master
+                           "rj-slave" - right-justified mode, SSI is clock slave
+                           "rj-master" - r.j., SSI is clock master
+                           "ac97-slave" - AC97 mode, SSI is clock slave
+                           "ac97-master" - AC97 mode, SSI is clock master
+
+       Optional properties:
+       - codec           : child node that defines an audio codec connected
+                           to this SSI
+
+       Child 'codec' node required properties:
+       - compatible      : compatible list, contains the name of the codec
+
+       Child 'codec' node optional properties:
+       - bus-frequency   : The frequency of the input clock, which typically
+                            comes from an on-board dedicated oscillator.
+
+
    More devices will be defined as this spec matures.
 
 VII - Specifying interrupt information for devices

arch/powerpc/boot/dts/mpc8610_hpcd.dts +1 -1

index 966edf1..fda0ace 100644
@@ -1,7 +1,7 @@
 /*
  * MPC8610 HPCD Device Tree Source
  *
- * Copyright 2007 Freescale Semiconductor Inc.
+ * Copyright 2007-2008 Freescale Semiconductor Inc.
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under the terms of the GNU General Public License Version 2 as published

These patches add ALSA SoC device drivers for the Freescale MPC8610 SoC and the MPC8610-HPCD reference board.

The first patch updates some files in arch/powerpc and booting-without-of.txt.

The second patch adds the new audio driver files to sound/soc.

Both must be applied in order to avoid a build break.