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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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d70be079c3
+-- ULCB -------------------+ |+--------+ +--------+| || SSI0| <---> |ak4613 || || SSI1| <---> | || || | +--------+| || | +--------+| || SSI2| <---> |HDMI || || | +--------+| || SSI3| <--+ | || SSI4| <-+| | |+--------+ || | +-------------||------------+ +-- Kingfisher -------------+ | || +--------+| | |+->|pcm3168a|| | +-->| || | +--------+| +---------------------------+ On UCLB/KF, we intuitively think we want to handle these as "2 Sound Cards": card0,0: 1st sound of ULCB (SSI0 - ak4613) card0,1: 2nd sound of ULCB (SSI2 - HDMI) card1,0: 1st sound of KF (SSI3 - pcm3168a) ^ ^ However, because of ASoC Component vs. Card framework limitations, we needed to handle this as "1 big Sound Card": card0,0: 1st sound of ULCB/KF (SSI0 - ak4613) card0,1: 2nd sound of ULCB/KF (SSI2 - HDMI) card0,2: 3rd sound of ULCB/KF (SSI3 - pcm3168a) ^ ^ Now ASoC supports multi Component, which allows us to handle "2 Sound Cards" such as "ULCB Sound Card" and "Kingfisher Sound Card", all ULCB/KF Audio dtsi can be updated. Note that this changes the Sound Card specification method from userland, especially for Kingfisher Sound. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/87fs382yhk.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
91 lines
1.4 KiB
Plaintext
91 lines
1.4 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/*
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* Device Tree for ULCB + Kingfisher + Simple Audio Card
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*
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* Copyright (C) 2022 Renesas Electronics Corp.
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*/
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/*
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* (A) CPU0 <----> ak4613
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* (B) CPU1 ----> HDMI
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* (C) CPU2 ----> PCM3168A-p
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* (D) CPU3 <---- PCM3168A-c
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*
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* (A) aplay -D plughw:0,0 xxx.wav
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* (B) aplay -D plughw:0,1 xxx.wav
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* (C) aplay -D plughw:1,0 xxx.wav
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*
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* (A) arecord -D plughw:0,0 xxx.wav
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* (D) arecord -D plughw:1,1 xxx.wav
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*/
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/ {
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sound_card_kf: expand-sound {
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compatible = "simple-audio-card";
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label = "snd-kf";
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#address-cells = <1>;
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#size-cells = <0>;
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/*
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* (C) CPU2 -> PCM3168A-p
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*/
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simple-audio-card,dai-link@0 {
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reg = <0>;
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cpu {
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bitclock-master;
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frame-master;
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dai-tdm-slot-num = <8>;
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sound-dai = <&rcar_sound 2>;
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};
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codec {
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mclk-fs = <512>;
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sound-dai = <&pcm3168a 0>;
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};
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};
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/*
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* (D) CPU3 <- PCM3168A-c
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*/
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simple-audio-card,dai-link@1 {
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reg = <1>;
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cpu {
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bitclock-master;
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frame-master;
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dai-tdm-slot-num = <6>;
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sound-dai = <&rcar_sound 3>;
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};
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codec {
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mclk-fs = <512>;
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sound-dai = <&pcm3168a 1>;
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};
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};
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};
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};
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&pcm3168a {
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/*
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* (C) CPU2 -> PCM3168A-p
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* (D) CPU3 <- PCM3168A-c
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*/
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#sound-dai-cells = <1>;
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};
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&rcar_sound {
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rcar_sound,dai@1 {
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reg = <1>;
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/*
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* (C) CPU2 -> PCM3168A-p
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*/
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dai2 {
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playback = <&ssi3>;
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};
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/*
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* (D) CPU3 <- PCM3168A-c
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*/
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dai3 {
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capture = <&ssi4>;
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};
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};
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};
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