1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/sound/samsung,aries-wm8994.yaml b/Documentation/devicetree/bindings/sound/samsung,aries-wm8994.yaml
index 5fff586dc802..447e013f6e17 100644
--- a/Documentation/devicetree/bindings/sound/samsung,aries-wm8994.yaml
+++ b/Documentation/devicetree/bindings/sound/samsung,aries-wm8994.yaml
@@ -23,21 +23,26 @@ properties:
 
   cpu:
     type: object
+    additionalProperties: false
     properties:
       sound-dai:
         minItems: 2
         maxItems: 2
-        $ref: /schemas/types.yaml#/definitions/phandle-array
         description: |
           phandles to the I2S controller and bluetooth codec,
           in that order
+    required:
+      - sound-dai
 
   codec:
+    additionalProperties: false
     type: object
     properties:
       sound-dai:
-        $ref: /schemas/types.yaml#/definitions/phandle-array
+        maxItems: 1
         description: phandle to the WM8994 CODEC
+    required:
+      - sound-dai
 
   samsung,audio-routing:
     $ref: /schemas/types.yaml#/definitions/non-unique-string-array
@@ -146,4 +151,3 @@ examples:
             sound-dai = <&wm8994>;
         };
     };
-