Documentation: synopsys-dw-mshc: add bindings for idmac and edmac

synopsys-dw-mshc supports three types of transfer mode. We add
bindings and description for how to use them at runtime.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
index 346c6095a6155138ad01f2d39374a8ed97224d12..8636f5ae97e5157ba868e4ddc8bf505465e7bcb3 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
+++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
@@ -75,6 +75,12 @@ Optional properties:
 * vmmc-supply: The phandle to the regulator to use for vmmc.  If this is
   specified we'll defer probe until we can find this regulator.
 
+* dmas: List of DMA specifiers with the controller specific format as described
+  in the generic DMA client binding. Refer to dma.txt for details.
+
+* dma-names: request names for generic DMA client binding. Must be "rx-tx".
+  Refer to dma.txt for details.
+
 Aliases:
 
 - All the MSHC controller nodes should be represented in the aliases node using
@@ -95,6 +101,23 @@ board specific portions as listed below.
                #size-cells = <0>;
        };
 
+[board specific internal DMA resources]
+
+       dwmmc0@12200000 {
+               clock-frequency = <400000000>;
+               clock-freq-min-max = <400000 200000000>;
+               num-slots = <1>;
+               broken-cd;
+               fifo-depth = <0x80>;
+               card-detect-delay = <200>;
+               vmmc-supply = <&buck8>;
+               bus-width = <8>;
+               cap-mmc-highspeed;
+               cap-sd-highspeed;
+       };
+
+[board specific generic DMA request binding]
+
        dwmmc0@12200000 {
                clock-frequency = <400000000>;
                clock-freq-min-max = <400000 200000000>;
@@ -106,4 +129,6 @@ board specific portions as listed below.
                bus-width = <8>;
                cap-mmc-highspeed;
                cap-sd-highspeed;
+               dmas = <&pdma 12>;
+               dma-names = "rx-tx";
        };