i2c: vt8500: Add support for I2C bus on Wondermedia SoCs

[cascardo/linux.git] / Documentation / devicetree / bindings / i2c / i2c-vt8500.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c-vt8500.txt b/Documentation/devicetree/bindings/i2c/i2c-vt8500.txt
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+* Wondermedia I2C Controller
+
+Required properties :
+
+ - compatible : should be "wm,wm8505-i2c"
+ - reg : Offset and length of the register set for the device
+ - interrupts : <IRQ> where IRQ is the interrupt number
+ - clocks : phandle to the I2C clock source
+
+Optional properties :
+
+ - clock-frequency : desired I2C bus clock frequency in Hz.
+       Valid values are 100000 and 400000.
+       Default to 100000 if not specified, or invalid value.
+
+Example :
+
+       i2c_0: i2c@d8280000 {
+               compatible = "wm,wm8505-i2c";
+               reg = <0xd8280000 0x1000>;
+               interrupts = <19>;
+               clocks = <&clki2c0>;
+               clock-frequency = <400000>;
+       };