Brooklyn/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts

// Definitions for RPi DAC
/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835";

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

	fragment@1 {
		target-path = "/";
		__overlay__ {
			pcm1794a-codec {
				#sound-dai-cells = <0>;
				compatible = "ti,pcm1794a";
				status = "okay";
			};
		};
	};

	fragment@2 {
		target = <&sound>;
		__overlay__ {
			compatible = "rpi,rpi-dac";
			i2s-controller = <&i2s>;
			status = "okay";
		};
	};
};