diff --git a/Documentation/devicetree/bindings/sound/realtek,rt5640.yaml b/Documentation/devicetree/bindings/sound/realtek,rt5640.yaml
index 3f4f59287c1c..a0b8bf6cb110 100644
--- a/Documentation/devicetree/bindings/sound/realtek,rt5640.yaml
+++ b/Documentation/devicetree/bindings/sound/realtek,rt5640.yaml
@@ -47,6 +47,12 @@ properties:
   reg:
     maxItems: 1
 
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: mclk
+
   interrupts:
     maxItems: 1
     description: The CODEC's interrupt output.
@@ -121,6 +127,9 @@ properties:
       - 2 # Scale current by 1.0
       - 3 # Scale current by 1.5
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+
 required:
   - compatible
   - reg