diff --git a/Documentation/devicetree/bindings/pinctrl/xlnx,versal-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/xlnx,versal-pinctrl.yaml
index 55ece6a..81e2164 100644
--- a/Documentation/devicetree/bindings/pinctrl/xlnx,versal-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/xlnx,versal-pinctrl.yaml
@@ -74,6 +74,7 @@
 
       '^conf':
         type: object
+        unevaluatedProperties: false
         description:
           Pinctrl node's client devices use subnodes for pin configurations,
           which in turn use the standard properties below.