linux-kernel - [PATCH v4 2/2] Documentation:add DMA support for freescale i2c driver

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Date:	Fri, 4 Apr 2014 10:41:12 +0800
From:	Yuan Yao <yao.yuan@...escale.com>
To:	<wsa@...-dreams.de>, <marex@...x.de>
CC:	<mark.rutland@....com>, <shawn.guo@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-i2c@...r.kernel.org>
Subject: [PATCH v4 2/2] Documentation:add DMA support for freescale i2c driver

Add i2c dts node properties for eDMA support, them depend on the eDMA driver.

Signed-off-by: Yuan Yao <yao.yuan@...escale.com>
---
 Documentation/devicetree/bindings/i2c/i2c-imx.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx.txt b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
index 4a8513e..52d37fd 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-imx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
@@ -11,6 +11,8 @@ Required properties:
 Optional properties:
 - clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
   The absence of the propoerty indicates the default frequency 100 kHz.
+- dmas: A list of two dma specifiers, one for each entry in dma-names.
+- dma-names: should contain "tx" and "rx".
 
 Examples:
 
@@ -26,3 +28,12 @@ i2c@...38000 { /* HS-I2C on i.MX51 */
 	interrupts = <64>;
 	clock-frequency = <400000>;
 };
+
+i2c0: i2c@...66000 { /* i2c0 on vf610 */
+	compatible = "fsl,vf610-i2c";
+	reg = <0x40066000 0x1000>;
+	interrupts =<0 71 0x04>;
+	dmas = <&edma0 0 50>,
+		<&edma0 0 51>;
+	dma-names = "rx","tx";
+};
-- 
1.8.4


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