kernel/Documentation/devicetree/bindings/net/can/rcar_can.txt

   1 Renesas R-Car CAN controller Device Tree Bindings
   2 -------------------------------------------------
   3
   4 Required properties:
   5 - compatible: "renesas,can-r8a7778" if CAN controller is a part of R8A7778 SoC.
   6               "renesas,can-r8a7779" if CAN controller is a part of R8A7779 SoC.
   7               "renesas,can-r8a7790" if CAN controller is a part of R8A7790 SoC.
   8               "renesas,can-r8a7791" if CAN controller is a part of R8A7791 SoC.
   9 - reg: physical base address and size of the R-Car CAN register map.
  10 - interrupts: interrupt specifier for the sole interrupt.
  11 - clocks: phandles and clock specifiers for 3 CAN clock inputs.
  12 - clock-names: 3 clock input name strings: "clkp1", "clkp2", "can_clk".
  13 - pinctrl-0: pin control group to be used for this controller.
  14 - pinctrl-names: must be "default".
  15
  16 Optional properties:
  17 - renesas,can-clock-select: R-Car CAN Clock Source Select. Valid values are:
  18                             <0x0> (default) : Peripheral clock (clkp1)
  19                             <0x1> : Peripheral clock (clkp2)
  20                             <0x3> : Externally input clock
  21
  22 Example
  23 -------
  24
  25 SoC common .dtsi file:
  26
  27         can0: can@e6e80000 {
  28                 compatible = "renesas,can-r8a7791";
  29                 reg = <0 0xe6e80000 0 0x1000>;
  30                 interrupts = <0 186 IRQ_TYPE_LEVEL_HIGH>;
  31                 clocks = <&mstp9_clks R8A7791_CLK_RCAN0>,
  32                          <&cpg_clocks R8A7791_CLK_RCAN>, <&can_clk>;
  33                 clock-names = "clkp1", "clkp2", "can_clk";
  34                 status = "disabled";
  35         };
  36
  37 Board specific .dts file:
  38
  39 &can0 {
  40         pinctrl-0 = <&can0_pins>;
  41         pinctrl-names = "default";
  42         status = "okay";
  43 };