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

   1 Device tree configuration for Renesas IIC (sh_mobile) driver
   2
   3 Required properties:
   4 - compatible      :
   5                         - "renesas,iic-r8a73a4" (R-Mobile APE6)
   6                         - "renesas,iic-r8a7740" (R-Mobile A1)
   7                         - "renesas,iic-r8a7790" (R-Car H2)
   8                         - "renesas,iic-r8a7791" (R-Car M2-W)
   9                         - "renesas,iic-r8a7792" (R-Car V2H)
  10                         - "renesas,iic-r8a7793" (R-Car M2-N)
  11                         - "renesas,iic-r8a7794" (R-Car E2)
  12                         - "renesas,iic-r8a7795" (R-Car H3)
  13                         - "renesas,iic-r8a7796" (R-Car M3-W)
  14                         - "renesas,iic-sh73a0" (SH-Mobile AG5)
  15                         - "renesas,rcar-gen2-iic" (generic R-Car Gen2 compatible device)
  16                         - "renesas,rcar-gen3-iic" (generic R-Car Gen3 compatible device)
  17                         - "renesas,rmobile-iic" (generic device)
  18
  19                         When compatible with a generic R-Car version, nodes
  20                         must list the SoC-specific version corresponding to
  21                         the platform first followed by the generic R-Car
  22                         version.
  23
  24                         renesas,rmobile-iic must always follow.
  25
  26 - reg             : address start and address range size of device
  27 - interrupts      : interrupt of device
  28 - clocks          : clock for device
  29 - #address-cells  : should be <1>
  30 - #size-cells     : should be <0>
  31
  32 Optional properties:
  33 - clock-frequency : frequency of bus clock in Hz. Default 100kHz if unset.
  34 - dmas            : Must contain a list of two references to DMA
  35                     specifiers, one for transmission, and one for
  36                     reception.
  37 - dma-names       : Must contain a list of two DMA names, "tx" and "rx".
  38
  39
  40 Pinctrl properties might be needed, too. See there.
  41
  42 Example:
  43
  44         iic0: i2c@e6500000 {
  45                 compatible = "renesas,iic-r8a7790", "renesas,rcar-gen2-iic",
  46                              "renesas,rmobile-iic";
  47                 reg = <0 0xe6500000 0 0x425>;
  48                 interrupts = <0 174 IRQ_TYPE_LEVEL_HIGH>;
  49                 clocks = <&mstp3_clks R8A7790_CLK_IIC0>;
  50                 clock-frequency = <400000>;
  51                 #address-cells = <1>;
  52                 #size-cells = <0>;
  53         };