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authorMatt Porter <mporter@ti.com>2013-09-10 19:24:39 (GMT)
committerBenoit Cousson <bcousson@baylibre.com>2013-10-11 19:06:29 (GMT)
commit55b4452b4b7082ecf3cc2095bc21762a901a8ca2 (patch)
tree995295869826dab924763d3da0a7d99a7dffb02f /Documentation/devicetree/bindings/mmc
parentf5e2f807b730fa7f0683e515fe7483a5ebff9095 (diff)
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>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
-rw-r--r--Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt26
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 ed271fc..8c8908a 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";
};

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