diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index b39743d3f7c4..b731f16aea84 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -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>;
-		};
-	};
-};
diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
new file mode 100644
index 000000000000..3f37f314b580
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
@@ -0,0 +1,454 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/renesas,rsnd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car Sound Driver Device Tree Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+properties:
+
+  compatible:
+    oneOf:
+      # for Gen1 SoC
+      - items:
+          - enum:
+            - renesas,rcar_sound-r8a7778   # R-Car M1A
+            - renesas,rcar_sound-r8a7779   # R-Car H1
+          - enum:
+            - renesas,rcar_sound-gen1
+      # for Gen2 SoC
+      - items:
+          - enum:
+              - 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-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
+          - enum:
+              - renesas,rcar_sound-gen2
+      # for Gen3 SoC
+      - items:
+          - enum:
+              - 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-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
+          - enum:
+              - renesas,rcar_sound-gen3
+      # for Generic
+      - items:
+          - enum:
+              - renesas,rcar_sound-gen1
+              - renesas,rcar_sound-gen2
+              - renesas,rcar_sound-gen3
+
+  reg:
+    minItems: 3 # Gen1
+    maxItems: 5 # Gen2/Gen3
+
+  reg-names:
+    description: |
+      Should contain the register names.
+      scu/adg/ssi              if generation1
+      scu/adg/ssiu/ssi/audmapp if generation2/generation3
+    minItems: 3 # Gen1
+    maxItems: 5 # Gen2/Gen3
+    oneOf:
+      # for Gen1
+      - allOf:
+        - items:
+            enum:
+              - scu
+              - adg
+              - ssi
+      # for Gen2/Gen3
+      - allOf:
+        - items:
+            enum:
+              - scu
+              - adg
+              - ssiu
+              - ssi
+              - audmapp
+
+  "#sound-dai-cells":
+    description: |
+      it must be 0 if your system is using single DAI
+      it must be 1 if your system is using multi  DAIs
+    enum: [0, 1]
+
+  "#clock-cells":
+    description: |
+      it must be 0 if your system has audio_clkout
+      it must be 1 if your system has audio_clkout0/1/2/3
+    enum: [0, 1]
+
+  clock-frequency:
+    description: for audio_clkout0/1/2/3
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+
+  clkout-lr-asynchronous:
+    description: audio_clkoutn is asynchronizes with lr-clock.
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  power-domains: true
+
+  resets:
+    description: References to SSI resets
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+
+  reset-names:
+    description: List of valid reset names.
+    allOf:
+      - items:
+         oneOf:
+           - pattern: '^ssi(-all|\.[0-9])$'
+
+  clocks:
+    description: References to SSI/SRC/MIX/CTU/DVC/AUDIO_CLK clocks.
+    minItems:  1
+    maxItems: 31
+
+  clock-names:
+    description: List of necessary clock names.
+    minItems:  1
+    maxItems: 31
+    allOf:
+      - items:
+         oneOf:
+           - const:   ssi-all
+           - pattern: '^ssi\.[0-9]$'
+           - pattern: '^src\.[0-9]$'
+           - pattern: '^mix\.[0-1]$'
+           - pattern: '^ctu\.[0-1]$'
+           - pattern: '^dvc\.[0-1]$'
+           - pattern: '^clk_(a|b|c|i)$'
+
+  # For OF-graph
+  port:
+    description: OF-Graph subnode
+    $ref: "audio-graph-card.yaml#/definitions/port"
+
+  # For multi OF-graph
+  ports:
+    description: multi OF-Graph subnode
+    $ref: "audio-graph-card.yaml#/definitions/ports"
+
+# use patternProperties to avoid naming "xxx,yyy"
+patternProperties:
+  "^rcar_sound,dvc$":
+    description: DVC subnode.
+    type: object
+    patternProperties:
+      "^dvc-[0-1]$":
+        type: object
+        properties:
+          dmas:
+            maxItems: 1
+          dma-names:
+            const: "tx"
+        required:
+          - dmas
+          - dma-names
+    additionalProperties: false
+
+  "^rcar_sound,mix$":
+    description: MIX subnode.
+    type: object
+    patternProperties:
+      "^mix-[0-1]$":
+        type: object
+        # no propaties
+    additionalProperties: false
+
+  "^rcar_sound,ctu$":
+    description: CTU subnode.
+    type: object
+    patternProperties:
+      "^ctu-[0-7]$":
+        type: object
+        # no propaties
+    additionalProperties: false
+
+  "^rcar_sound,src$":
+    description: SRC subnode.
+    type: object
+    patternProperties:
+      "^src-[0-9]$":
+        type: object
+        properties:
+          interrupts:
+            maxItems: 1
+          dmas:
+            maxItems: 2
+          dma-names:
+            allOf:
+              - items:
+                  enum:
+                    - tx
+                    - rx
+        allOf:
+          - if:
+              properties:
+                status:
+                  const: "ok"
+            then:
+              required:
+                - interrupts
+                - dmas
+                - dma-names
+    additionalProperties: false
+
+  "^rcar_sound,ssiu$":
+    description: SSIU subnode.
+    type: object
+    patternProperties:
+      "^ssiu-[0-9]+$":
+        type: object
+        properties:
+          dmas:
+            maxItems: 2
+          dma-names:
+            allOf:
+              - items:
+                  enum:
+                    - tx
+                    - rx
+        required:
+          - dmas
+          - dma-names
+    additionalProperties: false
+
+  "^rcar_sound,ssi$":
+    description: SSI subnode.
+    type: object
+    patternProperties:
+      "^ssi-[0-9]$":
+        type: object
+        properties:
+          interrupts:
+            maxItems: 1
+          dmas:
+            minItems: 2
+            maxItems: 4
+          dma-names:
+            allOf:
+              - items:
+                  enum:
+                    - tx
+                    - rx
+                    - txu # if no ssiu node
+                    - rxu # if no ssiu node
+
+          shared-pin:
+            description: shared clock pin
+            $ref: /schemas/types.yaml#/definitions/flag
+          pio-transfer:
+            description: PIO transfer mode
+            $ref: /schemas/types.yaml#/definitions/flag
+          no-busif:
+            description: BUSIF is not used when [mem -> SSI] via DMA case
+            $ref: /schemas/types.yaml#/definitions/flag
+        required:
+          - interrupts
+          - dmas
+          - dma-names
+    additionalProperties: false
+
+  # For DAI base
+  "^rcar_sound,dai$":
+    description: DAI subnode.
+    type: object
+    patternProperties:
+      "^dai([0-9]+)?$":
+        type: object
+        properties:
+          playback:
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+          capture:
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+        anyOf:
+          - required:
+              - playback
+          - required:
+              - capture
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    rcar_sound: sound@ec500000 {
+        #sound-dai-cells = <1>;
+        compatible = "renesas,rcar_sound-r8a7790", "renesas,rcar_sound-gen2";
+        reg = <0xec500000 0x1000>, /* SCU  */
+              <0xec5a0000 0x100>,  /* ADG  */
+              <0xec540000 0x1000>, /* SSIU */
+              <0xec541000 0x1280>, /* SSI  */
+              <0xec740000 0x200>;  /* Audio DMAC peri peri*/
+        reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
+
+        clocks = <&mstp10_clks 1005>,                      /* SSI-ALL    */
+                 <&mstp10_clks 1006>, <&mstp10_clks 1007>, /* SSI9, SSI8 */
+                 <&mstp10_clks 1008>, <&mstp10_clks 1009>, /* SSI7, SSI6 */
+                 <&mstp10_clks 1010>, <&mstp10_clks 1011>, /* SSI5, SSI4 */
+                 <&mstp10_clks 1012>, <&mstp10_clks 1013>, /* SSI3, SSI2 */
+                 <&mstp10_clks 1014>, <&mstp10_clks 1015>, /* SSI1, SSI0 */
+                 <&mstp10_clks 1022>, <&mstp10_clks 1023>, /* SRC9, SRC8 */
+                 <&mstp10_clks 1024>, <&mstp10_clks 1025>, /* SRC7, SRC6 */
+                 <&mstp10_clks 1026>, <&mstp10_clks 1027>, /* SRC5, SRC4 */
+                 <&mstp10_clks 1028>, <&mstp10_clks 1029>, /* SRC3, SRC2 */
+                 <&mstp10_clks 1030>, <&mstp10_clks 1031>, /* SRC1, SRC0 */
+                 <&mstp10_clks 1020>, <&mstp10_clks 1021>, /* MIX1, MIX0 */
+                 <&mstp10_clks 1020>, <&mstp10_clks 1021>, /* CTU1, CTU0 */
+                 <&mstp10_clks 1019>, <&mstp10_clks 1018>, /* DVC0, DVC1 */
+                 <&audio_clk_a>, <&audio_clk_b>,           /* CLKA, CLKB */
+                 <&audio_clk_c>, <&audio_clk_i>;           /* CLKC, CLKI */
+
+        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",
+                      "mix.1", "mix.0",
+                      "ctu.1", "ctu.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 {
+                status = "disabled";
+            };
+            src1: src-1 {
+                interrupts = <0 353 0>;
+                dmas = <&audma0 0x87>, <&audma1 0x9c>;
+                dma-names = "rx", "tx";
+            };
+            /* skip after src-2 */
+        };
+
+        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";
+            };
+            /* skip after ssiu-2 */
+        };
+
+        rcar_sound,ssi {
+            ssi0: ssi-0 {
+                interrupts = <0 370 1>;
+                dmas = <&audma0 0x01>, <&audma1 0x02>;
+                dma-names = "rx", "tx";
+            };
+            ssi1: ssi-1 {
+                interrupts = <0 371 1>;
+                dmas = <&audma0 0x03>, <&audma1 0x04>;
+                dma-names = "rx", "tx";
+            };
+            /* skip other ssi-2 */
+        };
+
+        /* DAI base */
+        rcar_sound,dai {
+            dai0 {
+                playback = <&ssi5 &src5>;
+                capture  = <&ssi6>;
+            };
+            dai1 {
+                playback = <&ssi3>;
+            };
+            dai2 {
+                capture  = <&ssi4>;
+            };
+            dai3 {
+                playback = <&ssi7>;
+            };
+            dai4 {
+                capture  = <&ssi8>;
+            };
+        };
+
+        /* assume audio-graph */
+        port {
+            rsnd_endpoint: endpoint {
+                remote-endpoint = <&codec_endpoint>;
+
+                dai-format = "left_j";
+                bitclock-master = <&rsnd_endpoint0>;
+                frame-master = <&rsnd_endpoint0>;
+
+                playback = <&ssi0 &src0 &dvc0>;
+                capture  = <&ssi1 &src1 &dvc1>;
+            };
+        };
+    };
+
+
+    /* assume audio-graph */
+    codec {
+        port {
+            codec_endpoint: endpoint {
+                remote-endpoint = <&rsnd_endpoint>;
+            };
+        };
+    };
