diff --git a/Documentation/devicetree/bindings/net/renesas,etheravb.yaml b/Documentation/devicetree/bindings/net/renesas,etheravb.yaml
index 1e00ef5b3acd..fad002492421 100644
--- a/Documentation/devicetree/bindings/net/renesas,etheravb.yaml
+++ b/Documentation/devicetree/bindings/net/renesas,etheravb.yaml
@@ -97,6 +97,8 @@ properties:
 
   phy-handle: true
 
+  ptp-timer: true
+
   '#address-cells':
     description: Number of address cells for the MDIO bus.
     const: 1
@@ -305,6 +307,15 @@ allOf:
             items:
               - const: fck
               - const: refclk
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: renesas,etheravb-rcar-gen4
+    then:
+      properties:
+        ptp-timer: false
 
 additionalProperties: false