Patchwork [v2,2/2] Documentation:add DMA support for freescale i2c driver

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Submitter Yao Yuan
Date March 5, 2014, 6:52 a.m.
Message ID <1394002352-8380-3-git-send-email-yao.yuan@freescale.com>
Download mbox | patch
Permalink /patch/326619/
State Superseded
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Comments

Yao Yuan - March 5, 2014, 6:52 a.m.
Add i2c dts node properties for eDMA support, them depend on the eDMA driver.

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

Patch

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@70038000 { /* HS-I2C on i.MX51 */
 	interrupts = <64>;
 	clock-frequency = <400000>;
 };
+
+i2c0: i2c@40066000 { /* 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";
+};