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Message-ID: <87o8kz9blh.wl-kuninori.morimoto.gx@renesas.com>
Date: 19 Oct 2020 11:50:45 +0900
From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To: Sameer Pujar <spujar@...dia.com>
Cc: <broonie@...nel.org>, <lgirdwood@...il.com>, <robh+dt@...nel.org>,
<pierre-louis.bossart@...ux.intel.com>, <perex@...ex.cz>,
<tiwai@...e.com>, <p.zabel@...gutronix.de>,
<thierry.reding@...il.com>, <jonathanh@...dia.com>,
<alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<sharadg@...dia.com>, <mkumard@...dia.com>,
<viswanathl@...dia.com>, <rlokhande@...dia.com>,
<dramesh@...dia.com>, <atalambedu@...dia.com>,
<nwartikar@...dia.com>, <swarren@...dia.com>,
<nicoleotsuka@...il.com>
Subject: Re: [PATCH v4 09/15] ASoC: dt-bindings: audio-graph: Convert bindings to json-schema
Hi Sameer
> Convert device tree bindings of audio graph card to YAML format. Also
> expose some common definitions which can be used by similar graph based
> audio sound cards.
>
> Signed-off-by: Sameer Pujar <spujar@...dia.com>
> Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> ---
I'm posting this patch to Rob & DT ML.
Not yet accepted, though..
> .../devicetree/bindings/sound/audio-graph-card.txt | 337 -------------
> .../bindings/sound/audio-graph-card.yaml | 548 +++++++++++++++++++++
> 2 files changed, 548 insertions(+), 337 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/sound/audio-graph-card.txt
> create mode 100644 Documentation/devicetree/bindings/sound/audio-graph-card.yaml
>
> diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.txt b/Documentation/devicetree/bindings/sound/audio-graph-card.txt
> deleted file mode 100644
> index d5f6919..0000000
> --- a/Documentation/devicetree/bindings/sound/audio-graph-card.txt
> +++ /dev/null
> @@ -1,337 +0,0 @@
> -Audio Graph Card:
> -
> -Audio Graph Card specifies audio DAI connections of SoC <-> codec.
> -It is based on common bindings for device graphs.
> -see ${LINUX}/Documentation/devicetree/bindings/graph.txt
> -
> -Basically, Audio Graph Card property is same as Simple Card.
> -see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.yaml
> -
> -Below are same as Simple-Card.
> -
> -- label
> -- widgets
> -- routing
> -- dai-format
> -- frame-master
> -- bitclock-master
> -- bitclock-inversion
> -- frame-inversion
> -- mclk-fs
> -- hp-det-gpio
> -- mic-det-gpio
> -- dai-tdm-slot-num
> -- dai-tdm-slot-width
> -- clocks / system-clock-frequency
> -
> -Required properties:
> -
> -- compatible : "audio-graph-card";
> -- dais : list of CPU DAI port{s}
> -
> -Optional properties:
> -- pa-gpios: GPIO used to control external amplifier.
> -
> ------------------------
> -Example: Single DAI case
> ------------------------
> -
> - sound_card {
> - compatible = "audio-graph-card";
> -
> - dais = <&cpu_port>;
> - };
> -
> - dai-controller {
> - ...
> - cpu_port: port {
> - cpu_endpoint: endpoint {
> - remote-endpoint = <&codec_endpoint>;
> -
> - dai-format = "left_j";
> - ...
> - };
> - };
> - };
> -
> - audio-codec {
> - ...
> - port {
> - codec_endpoint: endpoint {
> - remote-endpoint = <&cpu_endpoint>;
> - };
> - };
> - };
> -
> ------------------------
> -Example: Multi DAI case
> ------------------------
> -
> - sound-card {
> - compatible = "audio-graph-card";
> -
> - label = "sound-card";
> -
> - dais = <&cpu_port0
> - &cpu_port1
> - &cpu_port2>;
> - };
> -
> - audio-codec@0 {
> - ...
> - port {
> - codec0_endpoint: endpoint {
> - remote-endpoint = <&cpu_endpoint0>;
> - };
> - };
> - };
> -
> - audio-codec@1 {
> - ...
> - port {
> - codec1_endpoint: endpoint {
> - remote-endpoint = <&cpu_endpoint1>;
> - };
> - };
> - };
> -
> - audio-codec@2 {
> - ...
> - port {
> - codec2_endpoint: endpoint {
> - remote-endpoint = <&cpu_endpoint2>;
> - };
> - };
> - };
> -
> - dai-controller {
> - ...
> - ports {
> - cpu_port0: port@0 {
> - cpu_endpoint0: endpoint {
> - remote-endpoint = <&codec0_endpoint>;
> -
> - dai-format = "left_j";
> - ...
> - };
> - };
> - cpu_port1: port@1 {
> - cpu_endpoint1: endpoint {
> - remote-endpoint = <&codec1_endpoint>;
> -
> - dai-format = "i2s";
> - ...
> - };
> - };
> - cpu_port2: port@2 {
> - cpu_endpoint2: endpoint {
> - remote-endpoint = <&codec2_endpoint>;
> -
> - dai-format = "i2s";
> - ...
> - };
> - };
> - };
> - };
> -
> -
> ------------------------
> -Example: Sampling Rate Conversion
> ------------------------
> -
> - sound_card {
> - compatible = "audio-graph-card";
> -
> - label = "sound-card";
> - prefix = "codec";
> - routing = "codec Playback", "DAI0 Playback",
> - "DAI0 Capture", "codec Capture";
> - convert-rate = <48000>;
> -
> - dais = <&cpu_port>;
> - };
> -
> - audio-codec {
> - ...
> - port {
> - codec_endpoint: endpoint {
> - remote-endpoint = <&cpu_endpoint>;
> - };
> - };
> - };
> -
> - dai-controller {
> - ...
> - cpu_port: port {
> - cpu_endpoint: endpoint {
> - remote-endpoint = <&codec_endpoint>;
> -
> - dai-format = "left_j";
> - ...
> - };
> - };
> - };
> -
> ------------------------
> -Example: 2 CPU 1 Codec (Mixing)
> ------------------------
> -
> - sound_card {
> - compatible = "audio-graph-card";
> -
> - label = "sound-card";
> - routing = "codec Playback", "DAI0 Playback",
> - "codec Playback", "DAI1 Playback",
> - "DAI0 Capture", "codec Capture";
> -
> - dais = <&cpu_port>;
> - };
> -
> - audio-codec {
> - ...
> -
> - audio-graph-card,prefix = "codec";
> - audio-graph-card,convert-rate = <48000>;
> - port {
> - reg = <0>;
> - codec_endpoint0: endpoint@0 {
> - remote-endpoint = <&cpu_endpoint0>;
> - };
> - codec_endpoint1: endpoint@1 {
> - remote-endpoint = <&cpu_endpoint1>;
> - };
> - };
> - };
> -
> - dai-controller {
> - ...
> - cpu_port: port {
> - cpu_endpoint0: endpoint@0 {
> - remote-endpoint = <&codec_endpoint0>;
> -
> - dai-format = "left_j";
> - ...
> - };
> - cpu_endpoint1: endpoint@1 {
> - remote-endpoint = <&codec_endpoint1>;
> -
> - dai-format = "left_j";
> - ...
> - };
> - };
> - };
> -
> ------------------------
> -Example: Multi DAI with DPCM
> ------------------------
> -
> - CPU0 ------ ak4613
> - CPU1 ------ HDMI
> - CPU2 ------ PCM3168A-p /* DPCM 1ch/2ch */
> - CPU3 --/ /* DPCM 3ch/4ch */
> - CPU4 --/ /* DPCM 5ch/6ch */
> - CPU5 --/ /* DPCM 7ch/8ch */
> - CPU6 ------ PCM3168A-c
> -
> - sound_card: sound {
> - compatible = "audio-graph-card";
> -
> - label = "sound-card";
> -
> - routing = "pcm3168a Playback", "DAI2 Playback",
> - "pcm3168a Playback", "DAI3 Playback",
> - "pcm3168a Playback", "DAI4 Playback",
> - "pcm3168a Playback", "DAI5 Playback";
> -
> - dais = <&snd_port0 /* ak4613 */
> - &snd_port1 /* HDMI0 */
> - &snd_port2 /* pcm3168a playback */
> - &snd_port3 /* pcm3168a capture */
> - >;
> - };
> -
> - ak4613: codec@10 {
> - ...
> - port {
> - ak4613_endpoint: endpoint {
> - remote-endpoint = <&rsnd_endpoint0>;
> - };
> - };
> - };
> -
> - pcm3168a: audio-codec@44 {
> - ...
> - audio-graph-card,prefix = "pcm3168a";
> - audio-graph-card,convert-channels = <8>; /* TDM Split */
> - ports {
> - port@0 {
> - reg = <0>;
> - pcm3168a_endpoint_p1: endpoint@1 {
> - remote-endpoint = <&rsnd_endpoint2>;
> - ...
> - };
> - pcm3168a_endpoint_p2: endpoint@2 {
> - remote-endpoint = <&rsnd_endpoint3>;
> - ...
> - };
> - pcm3168a_endpoint_p3: endpoint@3 {
> - remote-endpoint = <&rsnd_endpoint4>;
> - ...
> - };
> - pcm3168a_endpoint_p4: endpoint@4 {
> - remote-endpoint = <&rsnd_endpoint5>;
> - ...
> - };
> - };
> - port@1 {
> - reg = <1>;
> - pcm3168a_endpoint_c: endpoint {
> - remote-endpoint = <&rsnd_endpoint6>;
> - ...
> - };
> - };
> - };
> - };
> -
> - &sound {
> - ports {
> - snd_port0: port@0 {
> - rsnd_endpoint0: endpoint {
> - remote-endpoint = <&ak4613_endpoint>;
> - ...
> - };
> - };
> - snd_port1: port@1 {
> - rsnd_endpoint1: endpoint {
> - remote-endpoint = <&dw_hdmi0_snd_in>;
> - ...
> - };
> - };
> - snd_port2: port@2 {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - rsnd_endpoint2: endpoint@2 {
> - remote-endpoint = <&pcm3168a_endpoint_p1>;
> - ...
> - };
> - rsnd_endpoint3: endpoint@3 {
> - remote-endpoint = <&pcm3168a_endpoint_p2>;
> - ...
> - };
> - rsnd_endpoint4: endpoint@4 {
> - remote-endpoint = <&pcm3168a_endpoint_p3>;
> - ...
> - };
> - rsnd_endpoint5: endpoint@5 {
> - remote-endpoint = <&pcm3168a_endpoint_p4>;
> - ...
> - };
> - };
> - snd_port3: port@6 {
> - rsnd_endpoint6: endpoint {
> - remote-endpoint = <&pcm3168a_endpoint_c>;
> - ...
> - };
> - };
> - };
> - };
> diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml
> new file mode 100644
> index 0000000..d4b56bd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml
> @@ -0,0 +1,548 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/audio-graph-card.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Generic audio graph card
> +
> +description: |
> + Audio Graph Card specifies audio DAI connections of SoC <-> codec.
> + It is based on common bindings for device graphs.
> + see ${LINUX}/Documentation/devicetree/bindings/graph.yaml
> +
> + Basically, Audio Graph Card properties are similar to Simple Card.
> + see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.yaml
> + Common definitions required here are referenced from above.
> +
> +maintainers:
> + - Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> +
> +definitions:
> +
> + end-point:
> + type: object
> + properties:
> + mclk-fs:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/mclk-fs
> +
> + prefix:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/prefix
> +
> + convert-rate:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-rate
> +
> + convert-channels:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-channels
> +
> + frame-inversion:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/frame-inversion
> +
> + bitclock-inversion:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/bitclock-inversion
> +
> + frame-master:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/frame-master
> +
> + bitclock-master:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/bitclock-master
> +
> + dai-tdm-slot-num:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/dai-tdm-slot-num
> +
> + dai-tdm-slot-width:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/dai-tdm-slot-width
> +
> + clocks:
> + maxItems: 1
> +
> + system-clock-frequency:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/system-clock-frequency
> +
> + system-clock-direction-out:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/system-clock-direction-out
> +
> + dai-format:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/format
> +
> + remote-endpoint:
> + description: phandle to an 'endpoint' subnode of a remote device node.
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> + port:
> + type: object
> + description: |
> + If there is more than one 'port' or more than one 'endpoint' node
> + or 'reg' property present in the port and/or endpoint nodes then
> + '#address-cells' and '#size-cells' properties are required in relevant
> + parent node.
> + properties:
> + convert-rate:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-rate
> +
> + convert-channels:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-channels
> +
> + prefix:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/prefix
> +
> + mclk-fs:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/mclk-fs
> +
> + patternProperties:
> + "^endpoint(@[0-9a-f]+)?$":
> + type: object
> + $ref: "#/definitions/end-point"
> +
> + ports:
> + type: object
> + properties:
> + convert-rate:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-rate
> +
> + convert-channels:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-channels
> +
> + prefix:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/prefix
> +
> + mclk-fs:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/mclk-fs
> +
> + patternProperties:
> + "^port(@[0-9a-f]+)?$":
> + $ref: "#/definitions/port"
> +
> +properties:
> + compatible:
> + items:
> + - const: audio-graph-card
> +
> + dais:
> + description: list of CPU DAI port{s}
> + $ref: /schemas/types.yaml#/definitions/phandle-array
> +
> + label:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/label
> +
> + pa-gpios:
> + description: GPIO used to control external amplifier.
> +
> + widgets:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/widgets
> +
> + routing:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/routing
> +
> + convert-rate:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-rate
> +
> + convert-channels:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/convert-channels
> +
> + mclk-fs:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/mclk-fs
> +
> + prefix:
> + $ref: /schemas/sound/simple-card.yaml#/definitions/prefix
> +
> + hp-det-gpio:
> + maxItems: 1
> +
> + mic-det-gpio:
> + maxItems: 1
> +
> + ports:
> + $ref: "#/definitions/ports"
> +
> +patternProperties:
> + "^port(@[0-9a-f]+)?$":
> + $ref: "#/definitions/port"
> +
> +required:
> + - compatible
> + - dais
> +
> +additionalProperties: false
> +
> +examples:
> + # ---------------
> + # Single DAI case
> + # ---------------
> + - |
> + sound_card {
> + compatible = "audio-graph-card";
> +
> + dais = <&cpu_port>;
> + };
> +
> + dai-controller {
> + // ...
> +
> + cpu_port: port {
> + cpu_endpoint: endpoint {
> + remote-endpoint = <&codec_endpoint>;
> +
> + dai-format = "left_j";
> +
> + // ...
> + };
> + };
> + };
> +
> + audio-codec {
> + // ...
> +
> + port {
> + codec_endpoint: endpoint {
> + remote-endpoint = <&cpu_endpoint>;
> + };
> + };
> + };
> +
> + # --------------
> + # Multi DAI case
> + # --------------
> + - |
> + sound-card {
> + compatible = "audio-graph-card";
> +
> + label = "sound-card";
> +
> + dais = <&cpu_port0
> + &cpu_port1
> + &cpu_port2>;
> + };
> +
> + audio-codec-0 {
> + // ...
> +
> + port {
> + codec0_endpoint: endpoint {
> + remote-endpoint = <&cpu_endpoint0>;
> + };
> + };
> + };
> +
> + audio-codec-1 {
> + // ...
> +
> + port {
> + codec1_endpoint: endpoint {
> + remote-endpoint = <&cpu_endpoint1>;
> + };
> + };
> + };
> +
> + audio-codec-2 {
> + // ...
> +
> + port {
> + codec2_endpoint: endpoint {
> + remote-endpoint = <&cpu_endpoint2>;
> + };
> + };
> + };
> +
> + dai-controller {
> + // ...
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu_port0: port@0 {
> + reg = <0>;
> +
> + cpu_endpoint0: endpoint {
> + remote-endpoint = <&codec0_endpoint>;
> +
> + dai-format = "left_j";
> +
> + // ...
> + };
> + };
> + cpu_port1: port@1 {
> + reg = <1>;
> +
> + cpu_endpoint1: endpoint {
> + remote-endpoint = <&codec1_endpoint>;
> +
> + dai-format = "i2s";
> +
> + // ...
> + };
> + };
> + cpu_port2: port@2 {
> + reg = <2>;
> +
> + cpu_endpoint2: endpoint {
> + remote-endpoint = <&codec2_endpoint>;
> +
> + dai-format = "i2s";
> +
> + // ...
> + };
> + };
> + };
> + };
> +
> + # ------------------------
> + # Sampling Rate Conversion
> + # ------------------------
> + - |
> + sound_card {
> + compatible = "audio-graph-card";
> +
> + label = "sound-card";
> + prefix = "codec";
> + routing = "codec Playback", "DAI0 Playback",
> + "DAI0 Capture", "codec Capture";
> + convert-rate = <48000>;
> +
> + dais = <&cpu_port_src>;
> + };
> +
> + audio-codec {
> + // ...
> +
> + port {
> + codec_endpoint_src: endpoint {
> + remote-endpoint = <&cpu_endpoint_src>;
> + };
> + };
> + };
> +
> + dai-controller {
> + // ...
> +
> + cpu_port_src: port {
> + cpu_endpoint_src: endpoint {
> + remote-endpoint = <&codec_endpoint_src>;
> +
> + dai-format = "left_j";
> +
> + // ...
> + };
> + };
> + };
> +
> + # ----------------------
> + # 2 CPU 1 Codec (Mixing)
> + # ----------------------
> + - |
> + sound_card {
> + compatible = "audio-graph-card";
> +
> + label = "sound-card";
> + routing = "codec Playback", "DAI0 Playback",
> + "codec Playback", "DAI1 Playback",
> + "DAI0 Capture", "codec Capture";
> +
> + dais = <&cpu_port_mix>;
> + };
> +
> + audio-codec {
> + // ...
> +
> + audio-graph-card,prefix = "codec";
> + audio-graph-card,convert-rate = <48000>;
> +
> + port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + codec_endpoint0_mix: endpoint@0 {
> + reg = <0>;
> +
> + remote-endpoint = <&cpu_endpoint0_mix>;
> + };
> + codec_endpoint1_mix: endpoint@1 {
> + reg = <1>;
> +
> + remote-endpoint = <&cpu_endpoint1_mix>;
> + };
> + };
> + };
> +
> + dai-controller {
> + // ...
> +
> + cpu_port_mix: port {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu_endpoint0_mix: endpoint@0 {
> + reg = <0>;
> +
> + remote-endpoint = <&codec_endpoint0_mix>;
> +
> + dai-format = "left_j";
> +
> + // ...
> + };
> + cpu_endpoint1_mix: endpoint@1 {
> + reg = <1>;
> +
> + remote-endpoint = <&codec_endpoint1_mix>;
> +
> + dai-format = "left_j";
> +
> + // ...
> + };
> + };
> + };
> +
> + # -------------------
> + # Multi DAI with DPCM
> + #
> + # CPU0 ------ ak4613
> + # CPU1 ------ HDMI
> + # CPU2 ------ PCM3168A-p /* DPCM 1ch/2ch */
> + # CPU3 --/ /* DPCM 3ch/4ch */
> + # CPU4 --/ /* DPCM 5ch/6ch */
> + # CPU5 --/ /* DPCM 7ch/8ch */
> + # CPU6 ------ PCM3168A-c
> + # -------------------
> + - |
> + sound_card: sound {
> + compatible = "audio-graph-card";
> +
> + label = "sound-card";
> +
> + routing = "pcm3168a Playback", "DAI2 Playback",
> + "pcm3168a Playback", "DAI3 Playback",
> + "pcm3168a Playback", "DAI4 Playback",
> + "pcm3168a Playback", "DAI5 Playback";
> +
> + dais = <&snd_port0 /* ak4613 */
> + &snd_port1 /* HDMI0 */
> + &snd_port2 /* pcm3168a playback */
> + &snd_port3 /* pcm3168a capture */
> + >;
> + };
> +
> + ak4613: codec-10 {
> + // ...
> +
> + port {
> + ak4613_endpoint: endpoint {
> + remote-endpoint = <&rsnd_endpoint0>;
> + };
> + };
> + };
> +
> + pcm3168a: audio-codec-44 {
> + // ...
> +
> + audio-graph-card,prefix = "pcm3168a";
> + audio-graph-card,convert-channels = <8>; /* TDM Split */
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <0>;
> + pcm3168a_endpoint_p1: endpoint@1 {
> + reg = <1>;
> + remote-endpoint = <&rsnd_endpoint2>;
> +
> + // ...
> + };
> + pcm3168a_endpoint_p2: endpoint@2 {
> + reg = <2>;
> + remote-endpoint = <&rsnd_endpoint3>;
> +
> + // ...
> + };
> + pcm3168a_endpoint_p3: endpoint@3 {
> + reg = <3>;
> + remote-endpoint = <&rsnd_endpoint4>;
> +
> + // ...
> + };
> + pcm3168a_endpoint_p4: endpoint@4 {
> + reg = <4>;
> + remote-endpoint = <&rsnd_endpoint5>;
> +
> + // ...
> + };
> + };
> + port@1 {
> + reg = <1>;
> + pcm3168a_endpoint_c: endpoint {
> + remote-endpoint = <&rsnd_endpoint6>;
> +
> + // ...
> + };
> + };
> + };
> + };
> +
> + dai-controller {
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + snd_port0: port@0 {
> + reg = <0>;
> + rsnd_endpoint0: endpoint {
> + remote-endpoint = <&ak4613_endpoint>;
> +
> + // ...
> + };
> + };
> + snd_port1: port@1 {
> + reg = <1>;
> + rsnd_endpoint1: endpoint {
> + remote-endpoint = <&dw_hdmi0_snd_in>;
> +
> + // ...
> + };
> + };
> + snd_port2: port@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <2>;
> + rsnd_endpoint2: endpoint@2 {
> + reg = <2>;
> + remote-endpoint = <&pcm3168a_endpoint_p1>;
> +
> + // ...
> + };
> + rsnd_endpoint3: endpoint@3 {
> + reg = <3>;
> + remote-endpoint = <&pcm3168a_endpoint_p2>;
> +
> + // ...
> + };
> + rsnd_endpoint4: endpoint@4 {
> + reg = <4>;
> + remote-endpoint = <&pcm3168a_endpoint_p3>;
> +
> + // ...
> + };
> + rsnd_endpoint5: endpoint@5 {
> + reg = <5>;
> + remote-endpoint = <&pcm3168a_endpoint_p4>;
> +
> + // ...
> + };
> + };
> + snd_port3: port@6 {
> + reg = <6>;
> + rsnd_endpoint6: endpoint {
> + remote-endpoint = <&pcm3168a_endpoint_c>;
> +
> + // ...
> + };
> + };
> + };
> + };
> +
> +...
> --
> 2.7.4
>
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