diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml
index 2329aeb91db7..109e55f9e597 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-card.yaml
+++ b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml
@@ -4,120 +4,24 @@
 $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
+title: Audio Graph Card Device Tree Bindings
 
 maintainers:
   - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 
+allOf:
+  - $ref: /schemas/sound/audio-graph.yaml#
+
 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
+unevaluatedProperties: false
 
 examples:
   - |
diff --git a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
new file mode 100644
index 000000000000..9db19d4edc6a
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/audio-graph-port.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph Card 'port' Node Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+select: false
+
+properties:
+  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]+)?":
+        $ref: "#/properties/port"
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/sound/audio-graph.yaml b/Documentation/devicetree/bindings/sound/audio-graph.yaml
new file mode 100644
index 000000000000..4b46794e5153
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/audio-graph.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/audio-graph.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Audio Graph Device Tree Bindings
+
+maintainers:
+  - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+
+properties:
+  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
+
+required:
+  - dais
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
index 51f4dcaa970d..cbfd5914b432 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml
@@ -9,6 +9,10 @@ title: Renesas R-Car Sound Driver Device Tree Bindings
 maintainers:
   - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 
+allOf:
+  - $ref: audio-graph.yaml#
+  - $ref: audio-graph-port.yaml#
+
 properties:
 
   compatible:
@@ -111,13 +115,7 @@ properties:
         - pattern: '^dvc\.[0-1]$'
         - pattern: '^clk_(a|b|c|i)$'
 
-  port:
-    description: OF-Graph subnode
-    $ref: "audio-graph-card.yaml#/properties/port"
-
-  ports:
-    description: multi OF-Graph subnode
-    $ref: "audio-graph-card.yaml#/properties/ports"
+  port: true
 
 # use patternProperties to avoid naming "xxx,yyy" issue
 patternProperties:
