diff --git a/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml b/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
index 06353028b274..3d01cc355778 100644
--- a/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/socionext,uniphier-uart.yaml
@@ -22,6 +22,9 @@ properties:
   clocks:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
   auto-flow-control:
     description: enable automatic flow control support.
     $ref: /schemas/types.yaml#/definitions/flag