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-Renesas R-Car CAN controller Device Tree Bindings
--------------------------------------------------
-
-Required properties:
-- compatible: "renesas,can-r8a7742" if CAN controller is a part of R8A7742 SoC.
- "renesas,can-r8a7743" if CAN controller is a part of R8A7743 SoC.
- "renesas,can-r8a7744" if CAN controller is a part of R8A7744 SoC.
- "renesas,can-r8a7745" if CAN controller is a part of R8A7745 SoC.
- "renesas,can-r8a77470" if CAN controller is a part of R8A77470 SoC.
- "renesas,can-r8a774a1" if CAN controller is a part of R8A774A1 SoC.
- "renesas,can-r8a774b1" if CAN controller is a part of R8A774B1 SoC.
- "renesas,can-r8a774c0" if CAN controller is a part of R8A774C0 SoC.
- "renesas,can-r8a774e1" if CAN controller is a part of R8A774E1 SoC.
- "renesas,can-r8a7778" if CAN controller is a part of R8A7778 SoC.
- "renesas,can-r8a7779" if CAN controller is a part of R8A7779 SoC.
- "renesas,can-r8a7790" if CAN controller is a part of R8A7790 SoC.
- "renesas,can-r8a7791" if CAN controller is a part of R8A7791 SoC.
- "renesas,can-r8a7792" if CAN controller is a part of R8A7792 SoC.
- "renesas,can-r8a7793" if CAN controller is a part of R8A7793 SoC.
- "renesas,can-r8a7794" if CAN controller is a part of R8A7794 SoC.
- "renesas,can-r8a7795" if CAN controller is a part of R8A7795 SoC.
- "renesas,can-r8a7796" if CAN controller is a part of R8A77960 SoC.
- "renesas,can-r8a77961" if CAN controller is a part of R8A77961 SoC.
- "renesas,can-r8a77965" if CAN controller is a part of R8A77965 SoC.
- "renesas,can-r8a77990" if CAN controller is a part of R8A77990 SoC.
- "renesas,can-r8a77995" if CAN controller is a part of R8A77995 SoC.
- "renesas,rcar-gen1-can" for a generic R-Car Gen1 compatible device.
- "renesas,rcar-gen2-can" for a generic R-Car Gen2 or RZ/G1
- compatible device.
- "renesas,rcar-gen3-can" for a generic R-Car Gen3 or RZ/G2
- compatible device.
- When compatible with the generic version, nodes must list the
- SoC-specific version corresponding to the platform first
- followed by the generic version.
-
-- reg: physical base address and size of the R-Car CAN register map.
-- interrupts: interrupt specifier for the sole interrupt.
-- clocks: phandles and clock specifiers for 3 CAN clock inputs.
-- clock-names: 3 clock input name strings: "clkp1", "clkp2", and "can_clk".
-- pinctrl-0: pin control group to be used for this controller.
-- pinctrl-names: must be "default".
-
-Required properties for R8A774A1, R8A774B1, R8A774C0, R8A774E1, R8A7795,
-R8A77960, R8A77961, R8A77965, R8A77990, and R8A77995:
-For the denoted SoCs, "clkp2" can be CANFD clock. This is a div6 clock and can
-be used by both CAN and CAN FD controller at the same time. It needs to be
-scaled to maximum frequency if any of these controllers use it. This is done
-using the below properties:
-
-- assigned-clocks: phandle of clkp2(CANFD) clock.
-- assigned-clock-rates: maximum frequency of this clock.
-
-Optional properties:
-- renesas,can-clock-select: R-Car CAN Clock Source Select. Valid values are:
- <0x0> (default) : Peripheral clock (clkp1)
- <0x1> : Peripheral clock (clkp2)
- <0x3> : External input clock
-
-Example
--------
-
-SoC common .dtsi file:
-
- can0: can@e6e80000 {
- compatible = "renesas,can-r8a7791", "renesas,rcar-gen2-can";
- reg = <0 0xe6e80000 0 0x1000>;
- interrupts = <0 186 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&mstp9_clks R8A7791_CLK_RCAN0>,
- <&cpg_clocks R8A7791_CLK_RCAN>, <&can_clk>;
- clock-names = "clkp1", "clkp2", "can_clk";
- status = "disabled";
- };
-
-Board specific .dts file:
-
-&can0 {
- pinctrl-0 = <&can0_pins>;
- pinctrl-names = "default";
- status = "okay";
-};