66 lines
2 KiB
Plaintext
Executable file
66 lines
2 KiB
Plaintext
Executable file
Bosch C_CAN/D_CAN controller Device Tree Bindings
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-------------------------------------------------
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Required properties:
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- compatible : Should be "bosch,c_can" for C_CAN controllers and
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"bosch,d_can" for D_CAN controllers.
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Can be "ti,dra7-d_can", "ti,am3352-d_can" or
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"ti,am4372-d_can".
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- reg : physical base address and size of the C_CAN/D_CAN
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registers map
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- interrupts : property with a value describing the interrupt
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number
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The following are mandatory properties for DRA7x, AM33xx and AM43xx SoCs only:
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- ti,hwmods : Must be "d_can<n>" or "c_can<n>", n being the
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instance number
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The following are mandatory properties for Keystone 2 66AK2G SoCs only:
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- power-domains : Should contain a phandle to a PM domain provider node
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and an args specifier containing the DCAN device id
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value. This property is as per the binding,
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Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
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- clocks : CAN functional clock phandle. This property is as per the
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binding,
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Documentation/devicetree/bindings/clock/ti,sci-clk.txt
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Optional properties:
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- syscon-raminit : Handle to system control region that contains the
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RAMINIT register, register offset to the RAMINIT
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register and the CAN instance number (0 offset).
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Note: "ti,hwmods" field is used to fetch the base address and irq
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resources from TI, omap hwmod data base during device registration.
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Future plan is to migrate hwmod data base contents into device tree
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blob so that, all the required data will be used from device tree dts
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file.
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Example:
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Step1: SoC common .dtsi file
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dcan1: d_can@481d0000 {
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compatible = "bosch,d_can";
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reg = <0x481d0000 0x2000>;
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interrupts = <55>;
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interrupt-parent = <&intc>;
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status = "disabled";
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};
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(or)
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dcan1: d_can@481d0000 {
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compatible = "bosch,d_can";
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ti,hwmods = "d_can1";
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reg = <0x481d0000 0x2000>;
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interrupts = <55>;
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interrupt-parent = <&intc>;
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status = "disabled";
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};
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Step 2: board specific .dts file
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&dcan1 {
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status = "okay";
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};
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