linux-kernel - [PATCH 3/3] mmc: omap_hsmmc: add generic DMA request support to the DT binding

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Date:	Fri,  1 Feb 2013 16:01:19 -0500
From:	Matt Porter <mporter@...com>
To:	Venkatraman S <svenkatr@...com>, Chris Ball <cjb@...top.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>
Cc:	Vinod Koul <vinod.koul@...el.com>,
	Tony Lindgren <tony@...mide.com>,
	Devicetree Discuss <devicetree-discuss@...ts.ozlabs.org>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>, Dan Williams <djbw@...com>,
	Jon Hunter <jon-hunter@...com>,
	Santosh Shilimkar <santosh.shilimkar@...com>
Subject: [PATCH 3/3] mmc: omap_hsmmc: add generic DMA request support to the DT binding

The binding definition is based on the generic DMA request binding.

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

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@...809c000 {
+		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@...809c000 {
 		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";
 	};
-- 
1.7.9.5

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