diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2013-02-26 10:10:38 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-04-04 21:22:44 +0800 |
| commit | 0e91e434c86c84e84c46cf8bff2b5e53daee85d5 (patch) | |
| tree | 2c8505b03948d91424731318dfa3d7745fae82b5 /Documentation | |
| parent | d84f638b037fcd132ecf6f09f5b8ccf82278b9ee (diff) | |
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')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mxs-mmc.txt | 12 |
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>; }; |