[deliverable/linux.git] / Documentation / devicetree / bindings / i2c / i2c-jz4780.txt

* 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>;

	};
};
Commit	Line	Data
ba92222e ZLK	1	* Ingenic JZ4780 I2C Bus controller
	2
	3	Required properties:
	4	- compatible: should be "ingenic,jz4780-i2c"
	5	- reg: Should contain the address & size of the I2C controller registers.
	6	- interrupts: Should specify the interrupt provided by parent.
	7	- clocks: Should contain a single clock specifier for the JZ4780 I2C clock.
	8	- clock-frequency: desired I2C bus clock frequency in Hz.
	9
	10	Recommended properties:
	11	- pinctrl-names: should be "default";
	12	- pinctrl-0: phandle to pinctrl function
	13
	14	Optional properties:
	15	- interrupt-parent: Should be the phandle of the interrupt controller that
	16	delivers interrupts to the I2C block.
	17
	18	Example
	19
	20	/ {
	21	i2c4: i2c4@0x10054000 {
	22	compatible = "ingenic,jz4780-i2c";
	23	reg = <0x10054000 0x1000>;
	24
	25	interrupt-parent = <&intc>;
	26	interrupts = <56>;
	27
	28	clocks = <&cgu JZ4780_CLK_SMB4>;
	29	clock-frequency = <100000>;
	30	pinctrl-names = "default";
	31	pinctrl-0 = <&pins_i2c4_data>;
	32
	33	};
	34	};
	35