spi: samsung: Update binding documentation

Samsung SPI driver uses generic DMA bindings. Update the documentation
accordingly.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt
index 86aa061f069fda0d8e9e38f3eb04a06b8d2325ef..655b6654dc45742f9e4786762ff7b4c19c20bc60 100644 (file)
--- a/Documentation/devicetree/bindings/spi/spi-samsung.txt
+++ b/Documentation/devicetree/bindings/spi/spi-samsung.txt
@@ -18,14 +18,11 @@ Required SoC Specific Properties:
 - interrupts: The interrupt number to the cpu. The interrupt specifier format
   depends on the interrupt controller.
 
-[PRELIMINARY: the dma channel allocation will change once there are
-official DMA bindings]
+- dmas : Two or more DMA channel specifiers following the convention outlined
+  in bindings/dma/dma.txt
 
-- tx-dma-channel: The dma channel specifier for tx operations. The format of
-  the dma specifier depends on the dma controller.
-
-- rx-dma-channel: The dma channel specifier for rx operations. The format of
-  the dma specifier depends on the dma controller.
+- dma-names: Names for the dma channels. There must be at least one channel
+  named "tx" for transmit and named "rx" for receive.
 
 Required Board Specific Properties:
 
@@ -74,8 +71,11 @@ Example:
                compatible = "samsung,exynos4210-spi";
                reg = <0x12d20000 0x100>;
                interrupts = <0 66 0>;
-               tx-dma-channel = <&pdma0 5>;
-               rx-dma-channel = <&pdma0 4>;
+               dmas = <&pdma0 5
+                       &pdma0 4>;
+               dma-names = "tx", "rx";
+               #address-cells = <1>;
+               #size-cells = <0>;
        };
 
 - Board Specific Portion: