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authorShawn Guo <shawn.guo@linaro.org>2013-02-26 10:10:38 +0800
committerShawn Guo <shawn.guo@linaro.org>2013-04-04 21:22:44 +0800
commit0e91e434c86c84e84c46cf8bff2b5e53daee85d5 (patch)
tree2c8505b03948d91424731318dfa3d7745fae82b5 /Documentation/devicetree/bindings
parentd84f638b037fcd132ecf6f09f5b8ccf82278b9ee (diff)
downloadlinux-0e91e434c86c84e84c46cf8bff2b5e53daee85d5.tar.gz
mmc: mxs-mmc: move to use generic DMA helper
With the generic DMA device tree helper supported by mxs-dma driver, client devices only need to call dma_request_slave_channel() for requesting a DMA channel from dmaengine. Since mxs is a DT only platform now, along with the changes, the non-DT case checking in probe function also gets cleaned up. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Chris Ball <cjb@laptop.org> Cc: linux-mmc@vger.kernel.org Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/mmc/mxs-mmc.txt12
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mxs-mmc.txt b/Documentation/devicetree/bindings/mmc/mxs-mmc.txt
index 54949f6faede..515addc20070 100644
--- a/Documentation/devicetree/bindings/mmc/mxs-mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mxs-mmc.txt
@@ -9,15 +9,19 @@ and the properties used by the mxsmmc driver.
Required properties:
- compatible: Should be "fsl,<chip>-mmc". The supported chips include
imx23 and imx28.
-- interrupts: Should contain ERROR and DMA interrupts
-- fsl,ssp-dma-channel: APBH DMA channel for the SSP
+- interrupts: Should contain ERROR interrupt number
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+ and SSP DMA channel ID.
+ Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: Must be "rx-tx".
Examples:
ssp0: ssp@80010000 {
compatible = "fsl,imx28-mmc";
reg = <0x80010000 2000>;
- interrupts = <96 82>;
- fsl,ssp-dma-channel = <0>;
+ interrupts = <96>;
+ dmas = <&dma_apbh 0>;
+ dma-names = "rx-tx";
bus-width = <8>;
};