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

   1 Device tree configuration for Renesas IIC (sh_mobile) driver
   2
   3 Required properties:
   4 - compatible      : "renesas,iic-<soctype>". "renesas,rmobile-iic" as fallback
   5                      Examples with soctypes are:
   6                         - "renesas,iic-r8a73a4" (R-Mobile APE6)
   7                         - "renesas,iic-r8a7740" (R-Mobile A1)
   8                         - "renesas,iic-r8a7790" (R-Car H2)
   9                         - "renesas,iic-r8a7791" (R-Car M2-W)
  10                         - "renesas,iic-r8a7792" (R-Car V2H)
  11                         - "renesas,iic-r8a7793" (R-Car M2-N)
  12                         - "renesas,iic-r8a7794" (R-Car E2)
  13                         - "renesas,iic-sh73a0" (SH-Mobile AG5)
  14 - reg             : address start and address range size of device
  15 - interrupts      : interrupt of device
  16 - clocks          : clock for device
  17 - #address-cells  : should be <1>
  18 - #size-cells     : should be <0>
  19
  20 Optional properties:
  21 - clock-frequency : frequency of bus clock in Hz. Default 100kHz if unset.
  22 - dmas            : Must contain a list of two references to DMA
  23                     specifiers, one for transmission, and one for
  24                     reception.
  25 - dma-names       : Must contain a list of two DMA names, "tx" and "rx".
  26
  27
  28 Pinctrl properties might be needed, too. See there.
  29
  30 Example:
  31
  32         iic0: i2c@e6500000 {
  33                 compatible = "renesas,iic-r8a7790", "renesas,rmobile-iic";
  34                 reg = <0 0xe6500000 0 0x425>;
  35                 interrupts = <0 174 IRQ_TYPE_LEVEL_HIGH>;
  36                 clocks = <&mstp3_clks R8A7790_CLK_IIC0>;
  37                 clock-frequency = <400000>;
  38                 #address-cells = <1>;
  39                 #size-cells = <0>;
  40         };