1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Device Tree for ULCB + Kingfisher + Simple Audio Card
4 *
5 * Copyright (C) 2022 Renesas Electronics Corp.
6 */
7
8 /*
9 * (A) CPU0 <----> ak4613
10 * (B) CPU1 ----> HDMI
11 * (C) CPU2 ----> PCM3168A-p
12 * (D) CPU3 <---- PCM3168A-c
13 *
14 * (A) aplay -D plughw:0,0 xxx.wav
15 * (B) aplay -D plughw:0,1 xxx.wav
16 * (C) aplay -D plughw:1,0 xxx.wav
17 *
18 * (A) arecord -D plughw:0,0 xxx.wav
19 * (D) arecord -D plughw:1,1 xxx.wav
20 */
21
22 / {
23 sound_card_kf: expand-sound {
24 compatible = "simple-audio-card";
25 label = "snd-kf";
26
27 #address-cells = <1>;
28 #size-cells = <0>;
29
30 /*
31 * (C) CPU2 -> PCM3168A-p
32 */
33 simple-audio-card,dai-link@0 {
34 reg = <0>;
35 cpu {
36 bitclock-master;
37 frame-master;
38 dai-tdm-slot-num = <8>;
39 sound-dai = <&rcar_sound 2>;
40 };
41 codec {
42 mclk-fs = <512>;
43 sound-dai = <&pcm3168a 0>;
44 };
45 };
46 /*
47 * (D) CPU3 <- PCM3168A-c
48 */
49 simple-audio-card,dai-link@1 {
50 reg = <1>;
51 cpu {
52 bitclock-master;
53 frame-master;
54 dai-tdm-slot-num = <6>;
55 sound-dai = <&rcar_sound 3>;
56 };
57 codec {
58 mclk-fs = <512>;
59 sound-dai = <&pcm3168a 1>;
60 };
61 };
62 };
63 };
64
65 &pcm3168a {
66 /*
67 * (C) CPU2 -> PCM3168A-p
68 * (D) CPU3 <- PCM3168A-c
69 */
70 #sound-dai-cells = <1>;
71 };
72
73 &rcar_sound {
74 rcar_sound,dai@1 {
75 reg = <1>;
76
77 /*
78 * (C) CPU2 -> PCM3168A-p
79 */
80 dai2 {
81 playback = <&ssi3>;
82 };
83 /*
84 * (D) CPU3 <- PCM3168A-c
85 */
86 dai3 {
87 capture = <&ssi4>;
88 };
89 };
90 };
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