Documentation/devicetree/bindings/i2c/i2c-rcar.txt

   1 I2C for R-Car platforms
   2
   3 Required properties:
   4 - compatible: Must be one of
   5         "renesas,i2c-rcar"
   6         "renesas,i2c-r8a7778"
   7         "renesas,i2c-r8a7779"
   8         "renesas,i2c-r8a7790"
   9         "renesas,i2c-r8a7791"
  10         "renesas,i2c-r8a7792"
  11         "renesas,i2c-r8a7793"
  12         "renesas,i2c-r8a7794"
  13         "renesas,i2c-r8a7795"
  14 - reg: physical base address of the controller and length of memory mapped
  15   region.
  16 - interrupts: interrupt specifier.
  17
  18 Optional properties:
  19 - clock-frequency: desired I2C bus clock frequency in Hz. The absence of this
  20   property indicates the default frequency 100 kHz.
  21 - clocks: clock specifier.
  22 - dmas: Must contain a list of two references to DMA specifiers, one for
  23   transmission, and one for reception.
  24 - dma-names: Must contain a list of two DMA names, "tx" and "rx".
  25
  26 - i2c-scl-falling-time-ns: see i2c.txt
  27 - i2c-scl-internal-delay-ns: see i2c.txt
  28 - i2c-scl-rising-time-ns: see i2c.txt
  29
  30 Examples :
  31
  32 i2c0: i2c@e6508000 {
  33         #address-cells = <1>;
  34         #size-cells = <0>;
  35         compatible = "renesas,i2c-r8a7791";
  36         reg = <0 0xe6508000 0 0x40>;
  37         interrupts = <0 287 IRQ_TYPE_LEVEL_HIGH>;
  38         clocks = <&mstp9_clks R8A7791_CLK_I2C0>;
  39         clock-frequency = <400000>;
  40 };