diff --git a/Bindings/sound/renesas,rsnd.yaml b/Bindings/sound/renesas,rsnd.yaml
index 13a5a0a..0d7a6b5 100644
--- a/Bindings/sound/renesas,rsnd.yaml
+++ b/Bindings/sound/renesas,rsnd.yaml
@@ -9,20 +9,6 @@
 maintainers:
   - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 
-definitions:
-  port-def:
-    $ref: audio-graph-port.yaml#/definitions/port-base
-    unevaluatedProperties: false
-    patternProperties:
-      "^endpoint(@[0-9a-f]+)?":
-        $ref: audio-graph-port.yaml#/definitions/endpoint-base
-        properties:
-          playback:
-            $ref: /schemas/types.yaml#/definitions/phandle-array
-          capture:
-            $ref: /schemas/types.yaml#/definitions/phandle-array
-        unevaluatedProperties: false
-
 properties:
 
   compatible:
@@ -125,7 +111,17 @@
 
   # ports is below
   port:
-    $ref: "#/definitions/port-def"
+    $ref: audio-graph-port.yaml#/definitions/port-base
+    unevaluatedProperties: false
+    patternProperties:
+      "^endpoint(@[0-9a-f]+)?":
+        $ref: audio-graph-port.yaml#/definitions/endpoint-base
+        properties:
+          playback:
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+          capture:
+            $ref: /schemas/types.yaml#/definitions/phandle-array
+        unevaluatedProperties: false
 
   rcar_sound,dvc:
     description: DVC subnode.
@@ -269,7 +265,7 @@
     unevaluatedProperties: false
     patternProperties:
       '^port(@[0-9a-f]+)?$':
-        $ref: "#/definitions/port-def"
+        $ref: "#/properties/port"
 
 required:
   - compatible
@@ -501,19 +497,19 @@
         rcar_sound,dai {
             dai0 {
                 playback = <&ssi5>, <&src5>;
-                capture  = <&ssi6>;
+                capture = <&ssi6>;
             };
             dai1 {
                 playback = <&ssi3>;
             };
             dai2 {
-                capture  = <&ssi4>;
+                capture = <&ssi4>;
             };
             dai3 {
                 playback = <&ssi7>;
             };
             dai4 {
-                capture  = <&ssi8>;
+                capture = <&ssi8>;
             };
         };
 
@@ -527,7 +523,7 @@
                 frame-master = <&rsnd_endpoint0>;
 
                 playback = <&ssi0>, <&src0>, <&dvc0>;
-                capture  = <&ssi1>, <&src1>, <&dvc1>;
+                capture = <&ssi1>, <&src1>, <&dvc1>;
             };
         };
     };