/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/pinctrl/rockchip.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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/ {
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metadata {
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title = "Enable MCP2515 with 8MHz external clock on SPI1-M1 over CS1";
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compatible = "unknown";
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category = "misc";
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description = "Provide support for Microchip MCP2515 SPI CAN controller.\nAssumes 8MHz external clock.\nUses Pin 19 (GPIOI1_B2) for INT.";
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};
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fragment@0 {
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target = <&spi1>;
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__overlay__ {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&spi1m1_pins &spi1m1_cs0 &spi1m1_cs1>;
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can0: mcp2515@1 {
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compatible = "microchip,mcp2515";
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reg = <1>;
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spi-max-frequency = <10000000>;
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pinctrl-names = "default";
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pinctrl-0 = <&mcp2515_int_pins>;
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interrupt-parent = <&gpio1>;
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interrupts = <RK_PB2 IRQ_TYPE_EDGE_FALLING>;
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clocks = <&can0_osc>;
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};
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};
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};
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fragment@1 {
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target = <&pinctrl>;
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__overlay__ {
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mcp2515 {
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mcp2515_int_pins: mcp2515-int-pins {
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rockchip,pins = <1 RK_PB2 RK_FUNC_GPIO &pcfg_pull_up>;
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};
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};
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};
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};
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fragment@2 {
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target-path = "/";
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__overlay__ {
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can0_osc: can0-osc {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <8000000>;
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};
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};
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};
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};
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