encx24j600.dts

/dts-v1/;
/plugin/;

#include <dt-bindings/pinctrl/am33xx.h>
#include <dt-bindings/board/am335x-bbw-bbb-base.h>
#include <dt-bindings/interrupt-controller/irq.h>

&{/chosen} {
    overlays {
        // use name of this file (without .dts) as property name
        encx24j600 = __TIMESTAMP__;
    };
};

// disable cape-universal for pins used
&ocp {
    P9_12_pinmux { status = "disabled"; };  // encx24j600 irq
    P9_17_pinmux { status = "disabled"; };  // spi0 cs0
    P9_18_pinmux { status = "disabled"; };  // spi0 d1
    P9_21_pinmux { status = "disabled"; };  // spi0 d0
    P9_22_pinmux { status = "disabled"; };  // spi0 sclk
};

&spi0 {
    status = "okay";
    pinctrl-names = "default";
    pinctrl-0 = <&spi0_pins>;

    // use same node name as cape-universal does
    channel@0 {
        reg = <0>;
        compatible = "microchip,encx24j600";
        pinctrl-names = "default";
        pinctrl-0 = <&encx24j600_pins>;
        spi-max-frequency = <20000000>;
        interrupts-extended = <&gpio1 28 IRQ_TYPE_EDGE_FALLING>;
    };
};

&am33xx_pinmux {
    spi0_pins: spi0 {
        pinctrl-single,pins = <
            BONE_P9_17 ( PIN_OUTPUT_PULLUP | MUX_MODE0 ) // cs0
            BONE_P9_18 ( PIN_OUTPUT_PULLUP | MUX_MODE0 ) // d1 / mosi
            BONE_P9_21 ( PIN_INPUT_PULLUP  | MUX_MODE0 ) // d0 / miso
            BONE_P9_22 ( PIN_INPUT_PULLUP  | MUX_MODE0 ) // sclk
        >;
    };

    encx24j600_pins: encx24j600 {
        pinctrl-single,pins = <
            BONE_P9_12 ( PIN_INPUT_PULLUP  | MUX_MODE7 ) // gpio 1.28 / irq
        >;
    };
};