Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / i2c / i2c-imx.txt

diff --git a/kernel/Documentation/devicetree/bindings/i2c/i2c-imx.txt b/kernel/Documentation/devicetree/bindings/i2c/i2c-imx.txt
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+* Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX
+
+Required properties:
+- compatible :
+  - "fsl,imx1-i2c" for I2C compatible with the one integrated on i.MX1 SoC
+  - "fsl,imx21-i2c" for I2C compatible with the one integrated on i.MX21 SoC
+  - "fsl,vf610-i2c" for I2C compatible with the one integrated on Vybrid vf610 SoC
+- reg : Should contain I2C/HS-I2C registers location and length
+- interrupts : Should contain I2C/HS-I2C interrupt
+- clocks : Should contain the I2C/HS-I2C clock specifier
+
+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:
+
+i2c@83fc4000 { /* I2C2 on i.MX51 */
+       compatible = "fsl,imx51-i2c", "fsl,imx21-i2c";
+       reg = <0x83fc4000 0x4000>;
+       interrupts = <63>;
+};
+
+i2c@70038000 { /* HS-I2C on i.MX51 */
+       compatible = "fsl,imx51-i2c", "fsl,imx21-i2c";
+       reg = <0x70038000 0x4000>;
+       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";
+};