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67 lines
2.9 KiB
67 lines
2.9 KiB
I2C for R-Car platforms |
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Required properties: |
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- compatible: |
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"renesas,i2c-r8a7742" if the device is a part of a R8A7742 SoC. |
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"renesas,i2c-r8a7743" if the device is a part of a R8A7743 SoC. |
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"renesas,i2c-r8a7744" if the device is a part of a R8A7744 SoC. |
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"renesas,i2c-r8a7745" if the device is a part of a R8A7745 SoC. |
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"renesas,i2c-r8a77470" if the device is a part of a R8A77470 SoC. |
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"renesas,i2c-r8a774a1" if the device is a part of a R8A774A1 SoC. |
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"renesas,i2c-r8a774b1" if the device is a part of a R8A774B1 SoC. |
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"renesas,i2c-r8a774c0" if the device is a part of a R8A774C0 SoC. |
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"renesas,i2c-r8a774e1" if the device is a part of a R8A774E1 SoC. |
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"renesas,i2c-r8a7778" if the device is a part of a R8A7778 SoC. |
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"renesas,i2c-r8a7779" if the device is a part of a R8A7779 SoC. |
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"renesas,i2c-r8a7790" if the device is a part of a R8A7790 SoC. |
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"renesas,i2c-r8a7791" if the device is a part of a R8A7791 SoC. |
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"renesas,i2c-r8a7792" if the device is a part of a R8A7792 SoC. |
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"renesas,i2c-r8a7793" if the device is a part of a R8A7793 SoC. |
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"renesas,i2c-r8a7794" if the device is a part of a R8A7794 SoC. |
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"renesas,i2c-r8a7795" if the device is a part of a R8A7795 SoC. |
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"renesas,i2c-r8a7796" if the device is a part of a R8A77960 SoC. |
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"renesas,i2c-r8a77961" if the device is a part of a R8A77961 SoC. |
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"renesas,i2c-r8a77965" if the device is a part of a R8A77965 SoC. |
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"renesas,i2c-r8a77970" if the device is a part of a R8A77970 SoC. |
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"renesas,i2c-r8a77980" if the device is a part of a R8A77980 SoC. |
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"renesas,i2c-r8a77990" if the device is a part of a R8A77990 SoC. |
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"renesas,i2c-r8a77995" if the device is a part of a R8A77995 SoC. |
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"renesas,i2c-r8a779a0" if the device is a part of a R8A779A0 SoC. |
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"renesas,rcar-gen1-i2c" for a generic R-Car Gen1 compatible device. |
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"renesas,rcar-gen2-i2c" for a generic R-Car Gen2 or RZ/G1 compatible |
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device. |
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"renesas,rcar-gen3-i2c" for a generic R-Car Gen3 or RZ/G2 compatible |
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device. |
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"renesas,i2c-rcar" (deprecated) |
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When compatible with the generic version, nodes must list the |
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SoC-specific version corresponding to the platform first followed |
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by the generic version. |
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- reg: physical base address of the controller and length of memory mapped |
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region. |
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- interrupts: interrupt specifier. |
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Optional properties: |
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- clock-frequency: desired I2C bus clock frequency in Hz. The absence of this |
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property indicates the default frequency 100 kHz. |
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- clocks: clock specifier. |
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- dmas: Must contain a list of two references to DMA specifiers, one for |
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transmission, and one for reception. |
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- dma-names: Must contain a list of two DMA names, "tx" and "rx". |
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- i2c-scl-falling-time-ns: see i2c.txt |
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- i2c-scl-internal-delay-ns: see i2c.txt |
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- i2c-scl-rising-time-ns: see i2c.txt |
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Examples : |
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i2c0: i2c@e6508000 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "renesas,i2c-r8a7791", "renesas,rcar-gen2-i2c"; |
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reg = <0 0xe6508000 0 0x40>; |
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interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>; |
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clocks = <&mstp9_clks R8A7791_CLK_I2C0>; |
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clock-frequency = <400000>; |
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};
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