diff --git a/Documentation/devicetree/bindings/sound/realtek,rt1015p.yaml b/Documentation/devicetree/bindings/sound/realtek,rt1015p.yaml
index fdb7f295ef2d..1d73204451b1 100644
--- a/Documentation/devicetree/bindings/sound/realtek,rt1015p.yaml
+++ b/Documentation/devicetree/bindings/sound/realtek,rt1015p.yaml
@@ -25,6 +25,9 @@ properties:
       0 means shut down; 1 means power on.
     maxItems: 1
 
+  "#sound-dai-cells":
+    const: 0
+
 required:
   - compatible