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authorManjunathappa, Prakash <prakash.pm@ti.com>2013-03-28 18:42:00 +0530
committerSekhar Nori <nsekhar@ti.com>2013-04-04 16:55:05 +0530
commit7b43da4cfdd5e88157fe83a07cc49919080d3205 (patch)
tree928a0d17db2efe3da349b4b9ebbfe845ed0388aa /Documentation/devicetree/bindings/mmc
parentc3847a395b7175558f83dfc7b3171775a3d4ecf2 (diff)
mmc: davinci_mmc: add DT support
Adds device tree support for davinci_mmc. Also add binding documentation. As of now tested for non-dma PIO mode and without GPIO card_detect/ write_protect option because of dependencies on EDMA and GPIO module DT support. Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Sekhar Nori <nsekhar@ti.com> Cc: linux-mmc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: davinci-linux-open-source@linux.davincidsp.com Cc: devicetree-discuss@lists.ozlabs.org Cc: cjb@laptop.org Cc: Sekhar Nori <nsekhar@ti.com> Cc: mporter@ti.com Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Chris Ball <cjb@laptop.org> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
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diff --git a/Documentation/devicetree/bindings/mmc/davinci_mmc.txt b/Documentation/devicetree/bindings/mmc/davinci_mmc.txt
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+* TI Highspeed MMC host controller for DaVinci
+
+The Highspeed MMC Host Controller on TI DaVinci family
+provides an interface for MMC, SD and SDIO types of memory cards.
+
+This file documents the properties used by the davinci_mmc driver.
+
+Required properties:
+- compatible:
+ Should be "ti,da830-mmc": for da830, da850, dm365
+ Should be "ti,dm355-mmc": for dm355, dm644x
+
+Optional properties:
+- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
+- max-frequency: Maximum operating clock frequency, default 25MHz.
+- dmas: List of DMA specifiers with the controller specific format
+ as described in the generic DMA client binding. A tx and rx
+ specifier is required.
+- dma-names: RX and TX DMA request names. These strings correspond
+ 1:1 with the DMA specifiers listed in dmas.
+
+Example:
+mmc0: mmc@1c40000 {
+ compatible = "ti,da830-mmc",
+ reg = <0x40000 0x1000>;
+ interrupts = <16>;
+ status = "okay";
+ bus-width = <4>;
+ max-frequency = <50000000>;
+ dmas = <&edma 16
+ &edma 17>;
+ dma-names = "rx", "tx";
+};