Documentation/devicetree/bindings/i2c/i2c-jz4780.txt

   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