Kernel-4.18.0-80.el8_c_can

Bosch C_CAN/D_CAN controller Device Tree Bindings

Required properties:

• compatible : Should be “bosch,c_can” for C_CAN controllers and

          "bosch,d_can" for D_CAN controllers.
          Can be "ti,dra7-d_can", "ti,am3352-d_can" or
          "ti,am4372-d_can".
  

• reg : physical base address and size of the C_CAN/D_CAN

          registers map
  

• interrupts : property with a value describing the interrupt

          number
  

The following are mandatory properties for DRA7x, AM33xx and AM43xx SoCs only:

• ti,hwmods : Must be “d_can“ or “c_can“, n being the

          instance number
  

The following are mandatory properties for Keystone 2 66AK2G SoCs only:

• power-domains : Should contain a phandle to a PM domain provider node

          and an args specifier containing the DCAN device id
          value. This property is as per the binding,
          Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  

• clocks : CAN functional clock phandle. This property is as per the

          binding,
          Documentation/devicetree/bindings/clock/ti,sci-clk.txt
  

Optional properties:

• syscon-raminit : Handle to system control region that contains the

          RAMINIT register, register offset to the RAMINIT
          register and the CAN instance number (0 offset).
  

Note: “ti,hwmods” field is used to fetch the base address and irq
resources from TI, omap hwmod data base during device registration.
Future plan is to migrate hwmod data base contents into device tree
blob so that, all the required data will be used from device tree dts
file.

Example:

Step1: SoC common .dtsi file

dcan1: d_can@481d0000 {
    compatible = "bosch,d_can";
    reg = <0x481d0000 0x2000>;
    interrupts = <55>;
    interrupt-parent = <&intc>;
    status = "disabled";
};

(or)

dcan1: d_can@481d0000 {
    compatible = "bosch,d_can";
    ti,hwmods = "d_can1";
    reg = <0x481d0000 0x2000>;
    interrupts = <55>;
    interrupt-parent = <&intc>;
    status = "disabled";
};

Step 2: board specific .dts file

&dcan1 {
    status = "okay";
};