arch/arm64/boot/dts/renesas/ulcb-kf-audio-graph-card.dtsi

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

/*
 *	(A) CPU0 <----> ak4613
 *	(B) CPU1  ----> HDMI
 *	(C) CPU2  ----> PCM3168A-p (8ch)
 *	(D) CPU3 <----  PCM3168A-c (6ch)
 *
 *	(A) aplay   -D plughw:0,0 xxx.wav
 *	(B) aplay   -D plughw:0,1 xxx.wav
 *	(C) aplay   -D plughw:1,0 xxx.wav
 *
 *	(A) arecord -D plughw:0,0 xxx.wav
 *	(D) arecord -D plughw:1,1 xxx.wav
 */
/ {
	sound_card_kf: expand-sound {
		compatible = "audio-graph-card";
		label = "snd-kf";

		dais = <&snd_kf1 /* (C) CPU2  -> PCM3168A-p */
			&snd_kf2 /* (D) CPU3 <-  PCM3168A-c */
		>;
	};
};

&pcm3168a {
	ports {
		#address-cells = <1>;
		#size-cells = <0>;
		mclk-fs = <512>;
		/*
		 * (C) CPU2 -> PCM3168A-p
		 */
		port@0 {
			reg = <0>;
			pcm3168a_endpoint_p: endpoint {
				remote-endpoint = <&rsnd_for_pcm3168a_play>;
				clocks = <&clksndsel>;
			};
		};
		/*
		 * (D) CPU3 <- PCM3168A-c
		 */
		port@1 {
			reg = <1>;
			pcm3168a_endpoint_c: endpoint {
				remote-endpoint = <&rsnd_for_pcm3168a_capture>;
				clocks = <&clksndsel>;
			};
		};
	};
};

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

		/*
		 * (C) CPU2 -> PCM3168A-p
		 */
		snd_kf1: port@2 {
			reg = <2>;
			rsnd_for_pcm3168a_play: endpoint {
				remote-endpoint = <&pcm3168a_endpoint_p>;
				bitclock-master;
				frame-master;
				dai-tdm-slot-num = <8>;
				playback = <&ssi3>;
			};
		};
		/*
		 * (D) CPU3 <- PCM3168A-c
		 */
		snd_kf2: port@3 {
			reg = <3>;
			rsnd_for_pcm3168a_capture: endpoint {
				remote-endpoint = <&pcm3168a_endpoint_c>;
				bitclock-master;
				frame-master;
				dai-tdm-slot-num = <6>;
				capture = <&ssi4>;
			};
		};
	};
};