audio graph card based pcm5122 overlay with amplifier-enable gpio

pcm5122-4c-graph.dts

/dts-v1/;
/plugin/;

/ {
	fragment@0 {
		target = <&i2s>;
		__overlay__ {
			#sound-dai-cells = <0>;
			status = "okay";

			cpu_port: port {
				cpu_endpoint: endpoint {
					remote-endpoint = <&codec_endpoint>;
					dai-format = "i2s";
/*
					bitclock-master = <&cpu_endpoint>;
					frame-master = <&cpu_endpoint>;
*/
				};
			};
		};
	};

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

			pcm5122: pcm5122@4c {
				#sound-dai-cells = <0>;
				compatible = "ti,pcm5122";
				reg = <0x4c>;
				AVDD-supply = <&vdd_3v3_reg>;
				DVDD-supply = <&vdd_3v3_reg>;
				CPVDD-supply = <&vdd_3v3_reg>;
				status = "okay";

				codec_port: port {
					codec_endpoint: endpoint {
						remote-endpoint = <&cpu_endpoint>;
					};
				};
			};
		};
	};

	fragment@2 {
		target = <&gpio>;
		__overlay__ {
			audio_amplifier_pins: audio_amplifier_pins {
				brcm,pins = <4>;
				brcm,function = <1>;    // out
			};
		};		
	};

	fragment@3 {
		target-path = "/";
		__overlay__ {
			graph_pcm5122: graph-pcm5122 {
				compatible = "audio-graph-card";
				label = "PCM5122 graph";
				dais = <&cpu_port>;

				pinctrl-names = "default";
				pinctrl-0 = <&audio_amplifier_pins>;
				pa-gpios = <&gpio 4 0>;

				widgets = "Speaker", "Speaker Out Jack";

				routing =
					"Amplifier", "OUTL",
					"Amplifier", "OUTR",

					"Speaker Out Jack", "Amplifier";
			};
		};
	};
};