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[v3,2/2] mmc: omap_hsmmc: add generic DMA request support to the DT binding

Message ID 1362579128-5312-3-git-send-email-mporter@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Matt Porter March 6, 2013, 2:12 p.m. UTC 
The binding definition is based on the generic DMA request binding.

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
 .../devicetree/bindings/mmc/ti-omap-hsmmc.txt      |   26 +++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)
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Patch

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";
 	};