arch/arm64/boot/dts/renesas/ulcb-audio-graph-card-mix+split.dtsi

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree for ULCB + Audio Graph Card (MIX)
 *
 * Copyright (C) 2022 Renesas Electronics Corp.
 */

/*
 * Note:
 * The HDMI output is ignored due to the limited number of subdevices
 *
 *	(A) CPU0 (2ch) <-----> (2ch) (X) ak4613	(MIX-0)
 *	(B) CPU1 (2ch)  --/			(MIX-1)
 *
 *	(A) aplay   -D plughw:0,0 xxx.wav
 *	(B) aplay   -D plughw:0,1 xxx.wav
 *
 *	(A) arecord -D plughw:0,0 xxx.wav
 */

/ {
	sound_card: sound {
		compatible = "audio-graph-scu-card";
		label = "snd-ulcb-mix";

		routing = "ak4613 Playback", "DAI0 Playback",
			  "ak4613 Playback", "DAI1 Playback",
			  "DAI0 Capture",    "ak4613 Capture";

		dais = <&snd_ulcb1 /* (A) CPU0 */
			&snd_ulcb2 /* (B) CPU1 */
		>;
	};
};

&ak4613 {
	port {
		#address-cells = <1>;
		#size-cells = <0>;

		/*
		 * (X) ak4613
		 */
		prefix = "ak4613";
		convert-rate = <48000>;

		/* (A) CPU0 <-> (X) ak4613 */
		ak4613_ep1: endpoint@0 {
			reg = <0>;
			remote-endpoint = <&rsnd_for_ak4613_1>;
		};
		/* (B) CPU1 -> (X) ak4613 */
		ak4613_ep2: endpoint@1 {
			reg = <1>;
			remote-endpoint = <&rsnd_for_ak4613_2>;
		};
	};
};

&rcar_sound {
	#address-cells = <1>;
	#size-cells = <0>;

	ports@0 {
		#address-cells = <1>;
		#size-cells = <0>;
		reg = <0>;

		/*
		 * (A) CPU0
		 */
		snd_ulcb1: port@0 {
			reg = <0>;
			rsnd_for_ak4613_1: endpoint {
				remote-endpoint = <&ak4613_ep1>;
				bitclock-master;
				frame-master;
				playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
				capture  = <&ssi1 &src0 &dvc1>;
			};
		};
		/*
		 * (B) CPU1
		 */
		snd_ulcb2: port@1 {
			reg = <1>;
			rsnd_for_ak4613_2: endpoint {
				remote-endpoint = <&ak4613_ep2>;
				bitclock-master;
				frame-master;
				playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
			};
		};
	};
};