Based on kernel version 4.16.1. Page generated on 2018-04-09 11:52 EST.
1 I2C for R-Car platforms 2 3 Required properties: 4 - compatible: 5 "renesas,i2c-r8a7743" if the device is a part of a R8A7743 SoC. 6 "renesas,i2c-r8a7745" if the device is a part of a R8A7745 SoC. 7 "renesas,i2c-r8a7778" if the device is a part of a R8A7778 SoC. 8 "renesas,i2c-r8a7779" if the device is a part of a R8A7779 SoC. 9 "renesas,i2c-r8a7790" if the device is a part of a R8A7790 SoC. 10 "renesas,i2c-r8a7791" if the device is a part of a R8A7791 SoC. 11 "renesas,i2c-r8a7792" if the device is a part of a R8A7792 SoC. 12 "renesas,i2c-r8a7793" if the device is a part of a R8A7793 SoC. 13 "renesas,i2c-r8a7794" if the device is a part of a R8A7794 SoC. 14 "renesas,i2c-r8a7795" if the device is a part of a R8A7795 SoC. 15 "renesas,i2c-r8a7796" if the device is a part of a R8A7796 SoC. 16 "renesas,i2c-r8a77970" if the device is a part of a R8A77970 SoC. 17 "renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device. 18 "renesas,rcar-gen2-i2c" for a generic R-Car Gen2 or RZ/G1 compatible 19 device. 20 "renesas,rcar-gen3-i2c" for a generic R-Car Gen3 compatible device. 21 "renesas,i2c-rcar" (deprecated) 22 23 When compatible with the generic version, nodes must list the 24 SoC-specific version corresponding to the platform first followed 25 by the generic version. 26 27 - reg: physical base address of the controller and length of memory mapped 28 region. 29 - interrupts: interrupt specifier. 30 31 Optional properties: 32 - clock-frequency: desired I2C bus clock frequency in Hz. The absence of this 33 property indicates the default frequency 100 kHz. 34 - clocks: clock specifier. 35 - dmas: Must contain a list of two references to DMA specifiers, one for 36 transmission, and one for reception. 37 - dma-names: Must contain a list of two DMA names, "tx" and "rx". 38 39 - i2c-scl-falling-time-ns: see i2c.txt 40 - i2c-scl-internal-delay-ns: see i2c.txt 41 - i2c-scl-rising-time-ns: see i2c.txt 42 43 Examples : 44 45 i2c0: i2c@e6508000 { 46 #address-cells = <1>; 47 #size-cells = <0>; 48 compatible = "renesas,i2c-r8a7791", "renesas,rcar-gen2-i2c"; 49 reg = <0 0xe6508000 0 0x40>; 50 interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>; 51 clocks = <&mstp9_clks R8A7791_CLK_I2C0>; 52 clock-frequency = <400000>; 53 };