diff --git a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
index edd6cc37118e..6b4e02a0695a 100644
--- a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
+++ b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
@@ -15,9 +15,6 @@ definitions:
   port-base:
     $ref: /schemas/graph.yaml#/$defs/port-base
     properties:
-      prefix:
-        description: "device name prefix"
-        $ref: /schemas/types.yaml#/definitions/string
       convert-rate:
         $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-sample-rate"
       convert-channels: