diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2013-02-26 11:07:32 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-04-04 21:22:44 +0800 |
| commit | 26aafa77df61c4190eae80646211ee6f07c88eaf (patch) | |
| tree | 5ae896947ebde38999bd5271a8a13ad09a2b117d /Documentation/devicetree/bindings/spi/mxs-spi.txt | |
| parent | 0e91e434c86c84e84c46cf8bff2b5e53daee85d5 (diff) | |
spi: mxs-spi: 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 handling in probe function also gets removed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/spi/mxs-spi.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/mxs-spi.txt | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/spi/mxs-spi.txt b/Documentation/devicetree/bindings/spi/mxs-spi.txt index e2e13957c2a4..3499b73293c2 100644 --- a/Documentation/devicetree/bindings/spi/mxs-spi.txt +++ b/Documentation/devicetree/bindings/spi/mxs-spi.txt @@ -3,8 +3,11 @@ Required properties: - compatible: Should be "fsl,<soc>-spi", where soc is "imx23" or "imx28" - reg: Offset and length of the register set for the device -- interrupts: Should contain SSP interrupts (error irq first, dma irq second) -- fsl,ssp-dma-channel: APBX DMA channel for the SSP +- interrupts: Should contain SSP ERROR interrupt +- 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". Optional properties: - clock-frequency : Input clock frequency to the SPI block in Hz. @@ -17,6 +20,7 @@ ssp0: ssp@80010000 { #size-cells = <0>; compatible = "fsl,imx28-spi"; reg = <0x80010000 0x2000>; - interrupts = <96 82>; - fsl,ssp-dma-channel = <0>; + interrupts = <96>; + dmas = <&dma_apbh 0>; + dma-names = "rx-tx"; }; |