I2C for R-Car platforms Required properties: - compatible: Must be one of "renesas,i2c-rcar" "renesas,i2c-r8a7778" "renesas,i2c-r8a7779" "renesas,i2c-r8a7790" - reg: physical base address of the controller and length of memory mapped region. - interrupts: interrupt specifier. Optional properties: - clock-frequency: desired I2C bus clock frequency in Hz. The absence of this propoerty indicates the default frequency 100 kHz. Examples : i2c0: i2c@e6500000 { compatible = "renesas,i2c-rcar-h2"; reg = <0 0xe6500000 0 0x428>; interrupts = <0 174 0x4>; };