Binding for the Cadence I2C controller

Required properties:

- reg: Physical base address and size of the controller's register area.

- compatible: Compatibility string. Must be 'cdns,i2c-r1p10'.

- clocks: Input clock specifier. Refer to common clock bindings.

- interrupts: Interrupt specifier. Refer to interrupt bindings.

- #address-cells: Should be 1.

- #size-cells: Should be 0.

Optional properties:

- clock-frequency: Desired operating frequency, in Hz, of the bus.

- clock-names: Input clock name, should be 'pclk'.

Example:

i2c@e0004000 {

compatible = "cdns,i2c-r1p10";

clocks = <&clkc 38>;

interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;

reg = <0xe0004000 0x1000>;

clock-frequency = <400000>;

#address-cells = <1>;

#size-cells = <0>;

};