Brooklyn/arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts

// Definitions for audioinjector.net audio isolated soundcard
/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&i2s>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@1 {
		target-path = "/";
		__overlay__ {
			cs4272_mclk: codec-mclk {
				compatible = "fixed-clock";
				#clock-cells = <0>;
				clock-frequency = <24576000>;
			};
		};
	};

	fragment@2 {
		target = <&i2c1>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			cs4272: cs4271@10 {
				#sound-dai-cells = <0>;
				compatible = "cirrus,cs4271";
				reg = <0x10>;
				reset-gpio = <&gpio 5 0>;
				clocks = <&cs4272_mclk>;
				clock-names = "mclk";
				status = "okay";
			};
		};
	};

	fragment@3 {
		target = <&sound>;
		snd: __overlay__ {
			compatible = "ai,audioinjector-isolated-soundcard";
			mute-gpios = <&gpio 17 0>;
			i2s-controller = <&i2s>;
			codec = <&cs4272>;
			status = "okay";
		};
	};
};