mcp2515_bbai

#include <dt-bindings/interrupt-controller/irq.h>

/dts-v1/;
/plugin/;

&{/chosen} {
	overlays {
		 BBAI-MCP2515-SPI = __TIMESTAMP__;
	};
};


&{/} {
    mcp2515_clock: mcp2515-clock {
         #clock-cells = <0>;
         compatible = "fixed-clock";
         clock-frequency = <16000000>;
    };
};

&ocp {
    P9_23_pinmux { status = "disabled"; }; // cs
    P9_18_pinmux { status = "disabled"; }; // mosi
    P9_21_pinmux { status = "disabled"; }; // miso
    P9_22_pinmux { status = "disabled"; }; // clk
    P9_24_pinmux { status = "disabled"; }; // int
};

&bone_spi_0 {
    status = "okay";
    #address-cells = <1>;
    #size-cells = <0>;

    pinctrl-names = "default";
    pinctrl-0 = <&P9_23_spi_cs_pin>,   //cs
        	<&P9_18_spi_pin>,      //mosi
                <&P9_21_spi_pin>,      //miso
                <&P9_22_spi_sclk_pin>; //clk

    can@0 {
         compatible = "microchip,mcp2515";
         reg = <1>;
         mode = <0>;
         spi-max-frequency = <10000000>;
         clocks = <&mcp2515_clock>;
         pinctrl-names = "default";
         pinctrl-0 = <&P9_24_gpio_pin>;  // GPIO6_15 corresponds to P9_24 for interrupt signal
         interrupts-extended = <&gpio6 15 IRQ_TYPE_EDGE_FALLING>; // Using GPIO6_15 as the interrupt
         mcp251x,oscillator-frequency = <16000000>;
         mcp251x,irq-gpios = <&gpio4 21 0>;
         mcp251x,stay-awake = <1>;
         mcp251x,enable-clkout = <1>;
    };
};