// Overlay for the SiLabs Si446X Controller - SPI0
// Default Interrupt Pin: 17
// Default SDN Pin: 27
/dts-v1/;
/plugin/;

   / {
    compatible = "brcm,bcm2835";

    fragment@0 {
        target = <&spi0>;
        __overlay__ {
            // needed to avoid dtc warning
            #address-cells = <1>;
            #size-cells = <0>;

            status = "okay";

            uhf0: si446x@0{
                compatible = "silabs,si446x";
                reg = <0>; // CE0
                pinctrl-names = "default";
                pinctrl-0 = <&uhf0_pins>;
                interrupt-parent = <&gpio>;
                interrupts = <17 0x2>; // falling edge
                spi-max-frequency = <4000000>;
                sdn_pin = <27>;
                irq_pin = <17>;
                status = "okay";
            };
        };
    };

    fragment@1 {
        target = <&gpio>;
        __overlay__ {
            uhf0_pins: uhf0_pins {
                brcm,pins = <17 27>;
                brcm,function = <0 1>; // in, out
                brcm,pull = <2 0>; // high, none
            };
        };
    };

    __overrides__ {
        int_pin = <&uhf0>, "interrupts:0",
                  <&uhf0>, "irq_pin:0",
                  <&uhf0_pins>, "brcm,pins:0";
        reset_pin = <&uhf0>, "sdn_pin:0",
                    <&uhf0_pins>, "brcm,pins:4";
        speed   = <&uhf0>, "spi-max-frequency:0";
    };
};