forked from Qortal/Brooklyn
74 lines
1.9 KiB
Plaintext
74 lines
1.9 KiB
Plaintext
/*
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* Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner
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*/
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2835";
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/* disable spi-dev for spi0.1 */
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fragment@0 {
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target = <&spi0>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target = <&spidev1>;
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__overlay__ {
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status = "disabled";
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};
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};
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/* the interrupt pin of the can-controller */
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fragment@2 {
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target = <&gpio>;
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__overlay__ {
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can1_pins: can1_pins {
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brcm,pins = <25>;
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brcm,function = <0>; /* input */
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};
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};
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};
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/* the clock/oscillator of the can-controller */
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fragment@3 {
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target-path = "/";
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__overlay__ {
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/* external oscillator of mcp2515 on spi0.1 */
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can1_osc: can1_osc {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <16000000>;
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};
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};
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};
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/* the spi config of the can-controller itself binding everything together */
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fragment@4 {
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target = <&spi0>;
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__overlay__ {
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/* needed to avoid dtc warning */
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#address-cells = <1>;
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#size-cells = <0>;
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can1: mcp2515@1 {
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reg = <1>;
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compatible = "microchip,mcp2515";
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pinctrl-names = "default";
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pinctrl-0 = <&can1_pins>;
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spi-max-frequency = <10000000>;
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interrupt-parent = <&gpio>;
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interrupts = <25 8>; /* IRQ_TYPE_LEVEL_LOW */
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clocks = <&can1_osc>;
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};
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};
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};
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__overrides__ {
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oscillator = <&can1_osc>,"clock-frequency:0";
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spimaxfrequency = <&can1>,"spi-max-frequency:0";
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interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0";
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};
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};
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