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mmc: add BCM2835 driver

PATCH New Stephen Warren 2 participants 2 messages Jan 3, 2013 – Jan 14, 2013

Subsystems (5)
Device tree bindings MMC, SD and SDIO Broadcom BCM2711/BCM2835 Arm architecture Secure digital host controller interface (SDHCI) driver +1 more subsystems
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Stephen Warren

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PATCH 1/1 mmc: add BCM2835 driver

Add a very simple driver for the BCM2835 SoC, which is used in the Raspberry Pi board.

Signed-off-by Stephen Warren <[email protected]>
---
 .../devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt |   18 ++
 drivers/mmc/host/Kconfig                           |   11 +
 drivers/mmc/host/Makefile                          |    1 +
 drivers/mmc/host/sdhci-bcm2835.c                   |  227 ++++++++++++++++++++
 4 files changed, 257 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt
 create mode 100644 drivers/mmc/host/sdhci-bcm2835.c
Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhci.txt new file +18 -0
new file mode 100644
index 0000000..59476fb
@@ -0,0 +1,18 @@
+Broadcom BCM2835 SDHCI controller
+
+This file documents differences between the core properties described
+by mmc.txt and the properties that represent the BCM2835 controller.
+
+Required properties:
+- compatible : Should be "brcm,bcm2835-sdhci".
+- clocks : The clock feeding the SDHCI controller.
+
+Example:
+
+sdhci: sdhci {
+	compatible = "brcm,bcm2835-sdhci";
+	reg = <0x7e300000 0x100>;
+	interrupts = <2 30>;
+	clocks = <&clk_mmc>;
+	bus-width = <4>;
+};
drivers/mmc/host/Kconfig +11 -0
index cc8a8fa..7684f7f 100644
@@ -238,6 +238,17 @@ config MMC_SDHCI_S3C_DMA
 
 	  YMMV.
 
+config MMC_SDHCI_BCM2835
+	tristate "SDHCI platform support for the BCM2835 SD/MMC Controller"
+	depends on ARCH_BCM2835
+	depends on MMC_SDHCI_PLTFM
+	select MMC_SDHCI_IO_ACCESSORS
+	help
+	  This selects the BCM2835 SD/MMC controller. If you have a BCM2835
+	  platform with SD or MMC devices, say Y or M here.
+
+	  If unsure, say N.
+
 config MMC_OMAP
 	tristate "TI OMAP Multimedia Card Interface support"
 	depends on ARCH_OMAP
drivers/mmc/host/Makefile +1 -0
index e4e218c..d5ea0722 100644
@@ -58,6 +58,7 @@ obj-$(CONFIG_MMC_SDHCI_DOVE)		+= sdhci-dove.o
 obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= sdhci-tegra.o
 obj-$(CONFIG_MMC_SDHCI_OF_ESDHC)	+= sdhci-of-esdhc.o
 obj-$(CONFIG_MMC_SDHCI_OF_HLWD)		+= sdhci-of-hlwd.o
+obj-$(CONFIG_MMC_SDHCI_BCM2835)		+= sdhci-bcm2835.o
 
 ifeq ($(CONFIG_CB710_DEBUG),y)
 	CFLAGS-cb710-mmc	+= -DDEBUG
drivers/mmc/host/sdhci-bcm2835.c new file +227 -0

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Signature · 1 line
1.7.10.4
#1 lore raw

PATCH 1/1 mmc: add BCM2835 driver

Hi Stephen,

Quoted 4 lines · Stephen Warren

Add a very simple driver for the BCM2835 SoC, which is used in the Raspberry Pi board.

Signed-off-by Stephen Warren <[email protected]>

Looks good, thanks -- pushed to mmc-next for 3.9.

- Chris.

Signature · 2 lines
Chris Ball   <[email protected]>   <http://printf.net/>
One Laptop Per Child