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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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+-- 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>
96 lines
1.7 KiB
Plaintext
96 lines
1.7 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/*
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* Device Tree for ULCB + Audio Graph Card (MIX)
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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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* Note:
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* The HDMI output is ignored due to the limited number of subdevices
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*
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* (A) CPU0 (2ch) <-----> (2ch) (X) ak4613 (MIX-0)
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* (B) CPU1 (2ch) --/ (MIX-1)
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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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*
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* (A) arecord -D plughw:0,0 xxx.wav
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*/
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/ {
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sound_card: sound {
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compatible = "audio-graph-scu-card";
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label = "snd-ulcb-mix";
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routing = "ak4613 Playback", "DAI0 Playback",
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"ak4613 Playback", "DAI1 Playback",
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"DAI0 Capture", "ak4613 Capture";
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dais = <&snd_ulcb1 /* (A) CPU0 */
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&snd_ulcb2 /* (B) CPU1 */
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>;
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};
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};
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&ak4613 {
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port {
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#address-cells = <1>;
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#size-cells = <0>;
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/*
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* (X) ak4613
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*/
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prefix = "ak4613";
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convert-rate = <48000>;
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/* (A) CPU0 <-> (X) ak4613 */
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ak4613_ep1: endpoint@0 {
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reg = <0>;
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remote-endpoint = <&rsnd_for_ak4613_1>;
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};
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/* (B) CPU1 -> (X) ak4613 */
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ak4613_ep2: endpoint@1 {
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reg = <1>;
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remote-endpoint = <&rsnd_for_ak4613_2>;
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};
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};
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};
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&rcar_sound {
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#address-cells = <1>;
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#size-cells = <0>;
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ports@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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/*
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* (A) CPU0
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*/
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snd_ulcb1: port@0 {
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reg = <0>;
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rsnd_for_ak4613_1: endpoint {
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remote-endpoint = <&ak4613_ep1>;
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bitclock-master;
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frame-master;
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playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
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capture = <&ssi1 &src0 &dvc1>;
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};
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};
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/*
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* (B) CPU1
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*/
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snd_ulcb2: port@1 {
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reg = <1>;
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rsnd_for_ak4613_2: endpoint {
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remote-endpoint = <&ak4613_ep2>;
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bitclock-master;
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frame-master;
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playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
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};
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};
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};
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};
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