ARM: dts: AM33XX: Add MMC support and documentation

Adds AM33XX MMC support for am335x-bone, am335x-evm and am335x-evmsk boards.

Also added is the DMA binding definitions based on the generic DMA request
binding.

Additional changes made to DTS:
* Interrupt, reg and compatible properties added
* ti,needs-special-hs-handling added

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>

1 files changed, 25 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
index ed271fc255b2..8c8908ab84ba 100644
--- a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
+++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
@@ -20,8 +20,29 @@ ti,dual-volt: boolean, supports dual voltage cards
 ti,non-removable: non-removable slot (like eMMC)
 ti,needs-special-reset: Requires a special softreset sequence
 ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
+dmas: List of DMA specifiers with the controller specific format
+as described in the generic DMA client binding. A tx and rx
+specifier is required.
+dma-names: List of DMA request names. These strings correspond
+1:1 with the DMA specifiers listed in dmas. The string naming is
+to be "rx" and "tx" for RX and TX DMA requests, respectively.
+
+Examples:
+
+[hwmod populated DMA resources]
+
+        mmc1: mmc@0x4809c000 {
+                compatible = "ti,omap4-hsmmc";
+                reg = <0x4809c000 0x400>;
+                ti,hwmods = "mmc1";
+                ti,dual-volt;
+                bus-width = <4>;
+                vmmc-supply = <&vmmc>; /* phandle to regulator node */
+                ti,non-removable;
+        };
+
+[generic DMA request binding]
 
-Example:
         mmc1: mmc@0x4809c000 {
                 compatible = "ti,omap4-hsmmc";
                 reg = <0x4809c000 0x400>;
@@ -30,4 +51,7 @@ Example:
                 bus-width = <4>;
                 vmmc-supply = <&vmmc>; /* phandle to regulator node */
                 ti,non-removable;
+                dmas = <&edma 24
+                        &edma 25>;
+                dma-names = "tx", "rx";
         };