drivers/staging/pi433/Documentation/devicetree/pi433-overlay.dts

// Definitions for Pi433
/dts-v1/;
/plugin/;

/ {
        compatible = "bcm,bcm2835", "bcm,bcm2708", "bcm,bcm2709";

        fragment@0 {
                target = <&spi0>;
                __overlay__ {
                        status = "okay";

                        spidev@0{
                                status = "disabled";
                        };

                        spidev@1{
                                status = "disabled";
                        };
                };
        };

	fragment@1 {
		target = <&gpio>;
		__overlay__ {
			pi433_pins: pi433_pins {
				brcm,pins = <7 25 24>;
				brcm,function = <0 0 0>; // in in in
			};
		};
	};

	fragment@2 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			pi433: pi433@0 {
				compatible = "Smarthome-Wolf,pi433";
				reg = <0>;
				spi-max-frequency = <10000000>;
				status = "okay";

				pinctrl-0 = <&pi433_pins>;
				DIO0-gpio = <&gpio 24 0>;
				DIO1-gpio = <&gpio 25 0>;
				DIO2-gpio = <&gpio  7 0>;
			};
		};
	};
};