| I2C for R-Car platforms |
| |
| Required properties: |
| - compatible: |
| "renesas,i2c-r8a7743" if the device is a part of a R8A7743 SoC. |
| "renesas,i2c-r8a7745" if the device is a part of a R8A7745 SoC. |
| "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 or RZ/G1 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>; |
| }; |
