Merge series "ASoC: dt-bindings: audio-graph-card: switch to yaml base... (8ca19930) · Commits · 戴 / test

Documentation/devicetree/bindings/sound/audio-graph-card.txt

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		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>;
		...
		};
		};
		};
		};

Documentation/devicetree/bindings/sound/audio-graph-card.yaml

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		# 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: Audio Graph Card Driver Device Tree Bindings

		maintainers:
		- Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

		properties:
		compatible:
		enum:
		- audio-graph-card
		- audio-graph-scu-card

		dais:
		$ref: /schemas/types.yaml#/definitions/phandle-array
		label:
		maxItems: 1
		prefix:
		description: "device name prefix"
		$ref: /schemas/types.yaml#/definitions/string
		routing:
		description: \|
		A list of the connections between audio components.
		Each entry is a pair of strings, the first being the
		connection's sink, the second being the connection's source.
		$ref: /schemas/types.yaml#/definitions/non-unique-string-array
		widgets:
		description: User specified audio sound widgets.
		$ref: /schemas/types.yaml#/definitions/non-unique-string-array
		convert-rate:
		description: CPU to Codec rate convert.
		$ref: /schemas/types.yaml#/definitions/uint32
		convert-channels:
		description: CPU to Codec rate channels.
		$ref: /schemas/types.yaml#/definitions/uint32
		pa-gpios:
		maxItems: 1
		hp-det-gpio:
		maxItems: 1
		mic-det-gpio:
		maxItems: 1

		port:
		description: single OF-Graph subnode
		type: object
		properties:
		reg:
		maxItems: 1
		prefix:
		description: "device name prefix"
		$ref: /schemas/types.yaml#/definitions/string
		convert-rate:
		description: CPU to Codec rate convert.
		$ref: /schemas/types.yaml#/definitions/uint32
		convert-channels:
		description: CPU to Codec rate channels.
		$ref: /schemas/types.yaml#/definitions/uint32
		patternProperties:
		"^endpoint(@[0-9a-f]+)?":
		type: object
		properties:
		remote-endpoint:
		maxItems: 1
		mclk-fs:
		description: \|
		Multiplication factor between stream rate and codec mclk.
		When defined, mclk-fs property defined in dai-link sub nodes are ignored.
		$ref: /schemas/types.yaml#/definitions/uint32
		frame-inversion:
		description: dai-link uses frame clock inversion
		$ref: /schemas/types.yaml#/definitions/flag
		bitclock-inversion:
		description: dai-link uses bit clock inversion
		$ref: /schemas/types.yaml#/definitions/flag
		frame-master:
		description: Indicates dai-link frame master.
		$ref: /schemas/types.yaml#/definitions/phandle-array
		maxItems: 1
		bitclock-master:
		description: Indicates dai-link bit clock master
		$ref: /schemas/types.yaml#/definitions/phandle-array
		maxItems: 1
		dai-format:
		description: audio format.
		items:
		enum:
		- i2s
		- right_j
		- left_j
		- dsp_a
		- dsp_b
		- ac97
		- pdm
		- msb
		- lsb
		convert-rate:
		description: CPU to Codec rate convert.
		$ref: /schemas/types.yaml#/definitions/uint32
		convert-channels:
		description: CPU to Codec rate channels.
		$ref: /schemas/types.yaml#/definitions/uint32
		required:
		- remote-endpoint

		ports:
		description: multi OF-Graph subnode
		type: object
		patternProperties:
		"^port(@[0-9a-f]+)?":
		$ref: "#/properties/port"

		required:
		- compatible
		- dais

		additionalProperties: false

		examples:
		- \|
		sound {
		compatible = "audio-graph-card";

		dais = <&cpu_port_a>;
		};

		cpu {
		/*
		* dai-controller own settings
		*/

		port {
		cpu_endpoint: endpoint {
		remote-endpoint = <&codec_endpoint>;
		dai-format = "left_j";
		};
		};
		};

		codec {
		/*
		* codec own settings
		*/

		port {
		codec_endpoint: endpoint {
		remote-endpoint = <&cpu_endpoint>;
		};
		};
		};

Documentation/devicetree/bindings/sound/renesas,rsnd.txt

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		@@ -253,523 +253,3 @@ This is example of TDM 6ch.
		Driver can automatically switches TDM <-> stereo mode in this case.

		see "Example: simple sound card for TDM"

		=============================================
		Required properties:
		=============================================

		- compatible : "renesas,rcar_sound-<soctype>", fallbacks
		"renesas,rcar_sound-gen1" if generation1, and
		"renesas,rcar_sound-gen2" if generation2 (or RZ/G1)
		"renesas,rcar_sound-gen3" if generation3 (or RZ/G2)
		Examples with soctypes are:
		- "renesas,rcar_sound-r8a7742" (RZ/G1H)
		- "renesas,rcar_sound-r8a7743" (RZ/G1M)
		- "renesas,rcar_sound-r8a7744" (RZ/G1N)
		- "renesas,rcar_sound-r8a7745" (RZ/G1E)
		- "renesas,rcar_sound-r8a77470" (RZ/G1C)
		- "renesas,rcar_sound-r8a774a1" (RZ/G2M)
		- "renesas,rcar_sound-r8a774b1" (RZ/G2N)
		- "renesas,rcar_sound-r8a774c0" (RZ/G2E)
		- "renesas,rcar_sound-r8a774e1" (RZ/G2H)
		- "renesas,rcar_sound-r8a7778" (R-Car M1A)
		- "renesas,rcar_sound-r8a7779" (R-Car H1)
		- "renesas,rcar_sound-r8a7790" (R-Car H2)
		- "renesas,rcar_sound-r8a7791" (R-Car M2-W)
		- "renesas,rcar_sound-r8a7793" (R-Car M2-N)
		- "renesas,rcar_sound-r8a7794" (R-Car E2)
		- "renesas,rcar_sound-r8a7795" (R-Car H3)
		- "renesas,rcar_sound-r8a7796" (R-Car M3-W)
		- "renesas,rcar_sound-r8a77965" (R-Car M3-N)
		- "renesas,rcar_sound-r8a77990" (R-Car E3)
		- "renesas,rcar_sound-r8a77995" (R-Car D3)
		- reg : Should contain the register physical address.
		required register is
		SRU/ADG/SSI if generation1
		SRU/ADG/SSIU/SSI/AUDIO-DMAC-periperi if generation2/generation3
		Select extended AUDIO-DMAC-periperi address if SoC has it,
		otherwise select normal AUDIO-DMAC-periperi address.
		- reg-names : Should contain the register names.
		scu/adg/ssi if generation1
		scu/adg/ssiu/ssi/audmapp if generation2/generation3
		- rcar_sound,ssi : Should contain SSI feature.
		The number of SSI subnode should be same as HW.
		see below for detail.
		- rcar_sound,ssiu : Should contain SSIU feature.
		The number of SSIU subnode should be same as HW.
		see below for detail.
		- rcar_sound,src : Should contain SRC feature.
		The number of SRC subnode should be same as HW.
		see below for detail.
		- rcar_sound,ctu : Should contain CTU feature.
		The number of CTU subnode should be same as HW.
		see below for detail.
		- rcar_sound,mix : Should contain MIX feature.
		The number of MIX subnode should be same as HW.
		see below for detail.
		- rcar_sound,dvc : Should contain DVC feature.
		The number of DVC subnode should be same as HW.
		see below for detail.
		- rcar_sound,dai : DAI contents.
		The number of DAI subnode should be same as HW.
		see below for detail.
		- #sound-dai-cells : it must be 0 if your system is using single DAI
		it must be 1 if your system is using multi DAI
		- clocks : References to SSI/SRC/MIX/CTU/DVC/AUDIO_CLK clocks.
		- clock-names : List of necessary clock names.
		"ssi-all", "ssi.X", "src.X", "mix.X", "ctu.X",
		"dvc.X", "clk_a", "clk_b", "clk_c", "clk_i"

		Optional properties:
		- #clock-cells : it must be 0 if your system has audio_clkout
		it must be 1 if your system has audio_clkout0/1/2/3
		- clock-frequency : for all audio_clkout0/1/2/3
		- clkout-lr-asynchronous : boolean property. it indicates that audio_clkoutn
		is asynchronizes with lr-clock.
		- resets : References to SSI resets.
		- reset-names : List of valid reset names.
		"ssi-all", "ssi.X"

		SSI subnode properties:
		- interrupts : Should contain SSI interrupt for PIO transfer
		- shared-pin : if shared clock pin
		- pio-transfer : use PIO transfer mode
		- no-busif : BUSIF is not ussed when [mem -> SSI] via DMA case
		- dma : Should contain Audio DMAC entry
		- dma-names : SSI case "rx" (=playback), "tx" (=capture)
		Deprecated: see SSIU subnode properties
		SSIU case "rxu" (=playback), "txu" (=capture)

		SSIU subnode properties:
		- dma : Should contain Audio DMAC entry
		- dma-names : "rx" (=playback), "tx" (=capture)

		SRC subnode properties:
		- dma : Should contain Audio DMAC entry
		- dma-names : "rx" (=playback), "tx" (=capture)

		DVC subnode properties:
		- dma : Should contain Audio DMAC entry
		- dma-names : "tx" (=playback/capture)

		DAI subnode properties:
		- playback : list of playback modules
		- capture : list of capture modules


		=============================================
		Example:
		=============================================

		rcar_sound: sound@ec500000 {
		#sound-dai-cells = <1>;
		compatible = "renesas,rcar_sound-r8a7791", "renesas,rcar_sound-gen2";
		reg = <0 0xec500000 0 0x1000>, /* SCU */
		<0 0xec5a0000 0 0x100>, /* ADG */
		<0 0xec540000 0 0x1000>, /* SSIU */
		<0 0xec541000 0 0x1280>, /* SSI */
		<0 0xec740000 0 0x200>; /* Audio DMAC peri peri*/
		reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";

		clocks = <&mstp10_clks R8A7790_CLK_SSI_ALL>,
		<&mstp10_clks R8A7790_CLK_SSI9>, <&mstp10_clks R8A7790_CLK_SSI8>,
		<&mstp10_clks R8A7790_CLK_SSI7>, <&mstp10_clks R8A7790_CLK_SSI6>,
		<&mstp10_clks R8A7790_CLK_SSI5>, <&mstp10_clks R8A7790_CLK_SSI4>,
		<&mstp10_clks R8A7790_CLK_SSI3>, <&mstp10_clks R8A7790_CLK_SSI2>,
		<&mstp10_clks R8A7790_CLK_SSI1>, <&mstp10_clks R8A7790_CLK_SSI0>,
		<&mstp10_clks R8A7790_CLK_SCU_SRC9>, <&mstp10_clks R8A7790_CLK_SCU_SRC8>,
		<&mstp10_clks R8A7790_CLK_SCU_SRC7>, <&mstp10_clks R8A7790_CLK_SCU_SRC6>,
		<&mstp10_clks R8A7790_CLK_SCU_SRC5>, <&mstp10_clks R8A7790_CLK_SCU_SRC4>,
		<&mstp10_clks R8A7790_CLK_SCU_SRC3>, <&mstp10_clks R8A7790_CLK_SCU_SRC2>,
		<&mstp10_clks R8A7790_CLK_SCU_SRC1>, <&mstp10_clks R8A7790_CLK_SCU_SRC0>,
		<&mstp10_clks R8A7790_CLK_SCU_DVC0>, <&mstp10_clks R8A7790_CLK_SCU_DVC1>,
		<&audio_clk_a>, <&audio_clk_b>, <&audio_clk_c>, <&m2_clk>;
		clock-names = "ssi-all",
		"ssi.9", "ssi.8", "ssi.7", "ssi.6", "ssi.5",
		"ssi.4", "ssi.3", "ssi.2", "ssi.1", "ssi.0",
		"src.9", "src.8", "src.7", "src.6", "src.5",
		"src.4", "src.3", "src.2", "src.1", "src.0",
		"dvc.0", "dvc.1",
		"clk_a", "clk_b", "clk_c", "clk_i";

		rcar_sound,dvc {
		dvc0: dvc-0 {
		dmas = <&audma0 0xbc>;
		dma-names = "tx";
		};
		dvc1: dvc-1 {
		dmas = <&audma0 0xbe>;
		dma-names = "tx";
		};
		};

		rcar_sound,mix {
		mix0: mix-0 { };
		mix1: mix-1 { };
		};

		rcar_sound,ctu {
		ctu00: ctu-0 { };
		ctu01: ctu-1 { };
		ctu02: ctu-2 { };
		ctu03: ctu-3 { };
		ctu10: ctu-4 { };
		ctu11: ctu-5 { };
		ctu12: ctu-6 { };
		ctu13: ctu-7 { };
		};

		rcar_sound,src {
		src0: src-0 {
		interrupts = <0 352 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x85>, <&audma1 0x9a>;
		dma-names = "rx", "tx";
		};
		src1: src-1 {
		interrupts = <0 353 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x87>, <&audma1 0x9c>;
		dma-names = "rx", "tx";
		};
		src2: src-2 {
		interrupts = <0 354 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x89>, <&audma1 0x9e>;
		dma-names = "rx", "tx";
		};
		src3: src-3 {
		interrupts = <0 355 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x8b>, <&audma1 0xa0>;
		dma-names = "rx", "tx";
		};
		src4: src-4 {
		interrupts = <0 356 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x8d>, <&audma1 0xb0>;
		dma-names = "rx", "tx";
		};
		src5: src-5 {
		interrupts = <0 357 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x8f>, <&audma1 0xb2>;
		dma-names = "rx", "tx";
		};
		src6: src-6 {
		interrupts = <0 358 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x91>, <&audma1 0xb4>;
		dma-names = "rx", "tx";
		};
		src7: src-7 {
		interrupts = <0 359 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x93>, <&audma1 0xb6>;
		dma-names = "rx", "tx";
		};
		src8: src-8 {
		interrupts = <0 360 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x95>, <&audma1 0xb8>;
		dma-names = "rx", "tx";
		};
		src9: src-9 {
		interrupts = <0 361 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x97>, <&audma1 0xba>;
		dma-names = "rx", "tx";
		};
		};

		rcar_sound,ssiu {
		ssiu00: ssiu-0 {
		dmas = <&audma0 0x15>, <&audma1 0x16>;
		dma-names = "rx", "tx";
		};
		ssiu01: ssiu-1 {
		dmas = <&audma0 0x35>, <&audma1 0x36>;
		dma-names = "rx", "tx";
		};

		...

		ssiu95: ssiu-49 {
		dmas = <&audma0 0xA5>, <&audma1 0xA6>;
		dma-names = "rx", "tx";
		};
		ssiu96: ssiu-50 {
		dmas = <&audma0 0xA7>, <&audma1 0xA8>;
		dma-names = "rx", "tx";
		};
		ssiu97: ssiu-51 {
		dmas = <&audma0 0xA9>, <&audma1 0xAA>;
		dma-names = "rx", "tx";
		};
		};

		rcar_sound,ssi {
		ssi0: ssi-0 {
		interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x01>, <&audma1 0x02>;
		dma-names = "rx", "tx";
		};
		ssi1: ssi-1 {
		interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x03>, <&audma1 0x04>;
		dma-names = "rx", "tx";
		};

		...

		ssi8: ssi-8 {
		interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x11>, <&audma1 0x12>;
		dma-names = "rx", "tx";
		};
		ssi9: ssi-9 {
		interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
		dmas = <&audma0 0x13>, <&audma1 0x14>;
		dma-names = "rx", "tx";
		};
		};

		rcar_sound,dai {
		dai0 {
		playback = <&ssi5 &src5>;
		capture = <&ssi6>;
		};
		dai1 {
		playback = <&ssi3>;
		};
		dai2 {
		capture = <&ssi4>;
		};
		dai3 {
		playback = <&ssi7>;
		};
		dai4 {
		capture = <&ssi8>;
		};
		};
		};

		=============================================
		Example: simple sound card
		=============================================

		rsnd_ak4643: sound {
		compatible = "simple-audio-card";

		simple-audio-card,format = "left_j";
		simple-audio-card,bitclock-master = <&sndcodec>;
		simple-audio-card,frame-master = <&sndcodec>;

		sndcpu: simple-audio-card,cpu {
		sound-dai = <&rcar_sound>;
		};

		sndcodec: simple-audio-card,codec {
		sound-dai = <&ak4643>;
		clocks = <&audio_clock>;
		};
		};

		&rcar_sound {
		pinctrl-0 = <&sound_pins &sound_clk_pins>;
		pinctrl-names = "default";

		/* Single DAI */
		#sound-dai-cells = <0>;


		rcar_sound,dai {
		dai0 {
		playback = <&ssi0 &src2 &dvc0>;
		capture = <&ssi1 &src3 &dvc1>;
		};
		};
		};

		&ssi1 {
		shared-pin;
		};

		=============================================
		Example: simple sound card for Asynchronous mode
		=============================================

		sound {
		compatible = "simple-scu-audio-card";
		...
		/*
		* SRC Asynchronous mode setting
		* Playback:
		* All input data will be converted to 48kHz
		* Capture:
		* Inputed 48kHz data will be converted to
		* system specified Hz
		*/
		simple-audio-card,convert-rate = <48000>;
		...
		simple-audio-card,cpu {
		sound-dai = <&rcar_sound>;
		};
		simple-audio-card,codec {
		...
		};
		};

		=============================================
		Example: simple sound card for channel convert
		=============================================

		sound {
		compatible = "simple-scu-audio-card";
		...
		/*
		* CTU setting
		* All input data will be converted to 2ch
		* as output data
		*/
		simple-audio-card,convert-channels = <2>;
		...
		simple-audio-card,cpu {
		sound-dai = <&rcar_sound>;
		};
		simple-audio-card,codec {
		...
		};
		};

		=============================================
		Example: simple sound card for MIXer
		=============================================

		sound {
		compatible = "simple-scu-audio-card";
		...
		simple-audio-card,cpu@0 {
		sound-dai = <&rcar_sound 0>;
		};
		simple-audio-card,cpu@1 {
		sound-dai = <&rcar_sound 1>;
		};
		simple-audio-card,codec {
		...
		};
		};

		&rcar_sound {
		...
		rcar_sound,dai {
		dai0 {
		playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
		};
		dai1 {
		playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
		};
		};
		};

		=============================================
		Example: simple sound card for TDM
		=============================================

		rsnd_tdm: sound {
		compatible = "simple-audio-card";

		simple-audio-card,format = "left_j";
		simple-audio-card,bitclock-master = <&sndcodec>;
		simple-audio-card,frame-master = <&sndcodec>;

		sndcpu: simple-audio-card,cpu {
		sound-dai = <&rcar_sound>;
		dai-tdm-slot-num = <6>;
		};

		sndcodec: simple-audio-card,codec {
		sound-dai = <&xxx>;
		};
		};

		=============================================
		Example: simple sound card for TDM Split
		=============================================

		sound_card: sound {
		compatible = "audio-graph-scu-card";
		prefix = "xxxx";
		routing = "xxxx Playback", "DAI0 Playback",
		"xxxx Playback", "DAI1 Playback",
		"xxxx Playback", "DAI2 Playback",
		"xxxx Playback", "DAI3 Playback";
		convert-channels = <8>; /* TDM Split */

		dais = <&rsnd_port0 /* playback ch1/ch2 */
		&rsnd_port1 /* playback ch3/ch4 */
		&rsnd_port2 /* playback ch5/ch6 */
		&rsnd_port3 /* playback ch7/ch8 */
		>;
		};

		audio-codec {
		...
		port {
		codec_0: endpoint@1 {
		remote-endpoint = <&rsnd_ep0>;
		};
		codec_1: endpoint@2 {
		remote-endpoint = <&rsnd_ep1>;
		};
		codec_2: endpoint@3 {
		remote-endpoint = <&rsnd_ep2>;
		};
		codec_3: endpoint@4 {
		remote-endpoint = <&rsnd_ep3>;
		};
		};
		};

		&rcar_sound {
		...
		ports {
		rsnd_port0: port@0 {
		rsnd_ep0: endpoint {
		remote-endpoint = <&codec_0>;
		...
		playback = <&ssiu30 &ssi3>;
		};
		};
		rsnd_port1: port@1 {
		rsnd_ep1: endpoint {
		remote-endpoint = <&codec_1>;
		...
		playback = <&ssiu31 &ssi3>;
		};
		};
		rsnd_port2: port@2 {
		rsnd_ep2: endpoint {
		remote-endpoint = <&codec_2>;
		...
		playback = <&ssiu32 &ssi3>;
		};
		};
		rsnd_port3: port@3 {
		rsnd_ep3: endpoint {
		remote-endpoint = <&codec_3>;
		...
		playback = <&ssiu33 &ssi3>;
		};
		};
		};
		};

		=============================================
		Example: simple sound card for Multi channel
		=============================================

		&rcar_sound {
		pinctrl-0 = <&sound_pins &sound_clk_pins>;
		pinctrl-names = "default";

		/* Single DAI */
		#sound-dai-cells = <0>;


		rcar_sound,dai {
		dai0 {
		playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
		};
		};
		};

Documentation/devicetree/bindings/sound/renesas,rsnd.yaml

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