I2C for R-Car platforms Required properties: - compatible: "renesas,i2c-r8a7778" if the device is a part of a R8A7778 SoC. "renesas,i2c-r8a7779" if the device is a part of a R8A7779 SoC. "renesas,i2c-r8a7790" if the device is a part of a R8A7790 SoC. "renesas,i2c-r8a7791" if the device is a part of a R8A7791 SoC. "renesas,i2c-r8a7792" if the device is a part of a R8A7792 SoC. "renesas,i2c-r8a7793" if the device is a part of a R8A7793 SoC. "renesas,i2c-r8a7794" if the device is a part of a R8A7794 SoC. "renesas,i2c-r8a7795" if the device is a part of a R8A7795 SoC. "renesas,i2c-r8a7796" if the device is a part of a R8A7796 SoC. "renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device. "renesas,rcar-gen2-i2c" for a generic R-Car Gen2 compatible device. "renesas,rcar-gen3-i2c" for a generic R-Car Gen3 compatible device. "renesas,i2c-rcar" (deprecated) When compatible with the generic version, nodes must list the SoC-specific version corresponding to the platform first followed by the generic version. - 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 property indicates the default frequency 100 kHz. - clocks: clock specifier. - dmas: Must contain a list of two references to DMA specifiers, one for transmission, and one for reception. - dma-names: Must contain a list of two DMA names, "tx" and "rx". - i2c-scl-falling-time-ns: see i2c.txt - i2c-scl-internal-delay-ns: see i2c.txt - i2c-scl-rising-time-ns: see i2c.txt Examples : i2c0: i2c@e6508000 { #address-cells = <1>; #size-cells = <0>; compatible = "renesas,i2c-r8a7791", "renesas,rcar-gen2-i2c"; reg = <0 0xe6508000 0 0x40>; interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp9_clks R8A7791_CLK_I2C0>; clock-frequency = <400000>; };