Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / i2c / i2c-jz4780.txt

diff --git a/kernel/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt b/kernel/Documentation/devicetree/bindings/i2c/i2c-jz4780.txt
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+* Ingenic JZ4780 I2C Bus controller
+
+Required properties:
+- compatible: should be "ingenic,jz4780-i2c"
+- reg: Should contain the address & size of the I2C controller registers.
+- interrupts: Should specify the interrupt provided by parent.
+- clocks: Should contain a single clock specifier for the JZ4780 I2C clock.
+- clock-frequency: desired I2C bus clock frequency in Hz.
+
+Recommended properties:
+- pinctrl-names: should be "default";
+- pinctrl-0: phandle to pinctrl function
+
+Optional properties:
+- interrupt-parent: Should be the phandle of the interrupt controller that
+  delivers interrupts to the I2C block.
+
+Example
+
+/ {
+       i2c4: i2c4@0x10054000 {
+               compatible = "ingenic,jz4780-i2c";
+               reg = <0x10054000 0x1000>;
+
+               interrupt-parent = <&intc>;
+               interrupts = <56>;
+
+               clocks = <&cgu JZ4780_CLK_SMB4>;
+               clock-frequency = <100000>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&pins_i2c4_data>;
+
+       };
+};
+