42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
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I2C for R-Car platforms
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Required properties:
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- compatible: Must be one of
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"renesas,i2c-rcar"
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"renesas,i2c-r8a7778"
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"renesas,i2c-r8a7779"
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"renesas,i2c-r8a7790"
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"renesas,i2c-r8a7791"
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"renesas,i2c-r8a7792"
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"renesas,i2c-r8a7793"
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"renesas,i2c-r8a7794"
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"renesas,i2c-r8a7795"
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"renesas,i2c-r8a7796"
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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";
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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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