diff --git a/Documentation/devicetree/bindings/rtc/s3c-rtc.yaml b/Documentation/devicetree/bindings/rtc/s3c-rtc.yaml
index 4d91cdc9b998..76bbf8b7555b 100644
--- a/Documentation/devicetree/bindings/rtc/s3c-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/s3c-rtc.yaml
@@ -48,6 +48,7 @@ properties:
     maxItems: 2
 
 allOf:
+  - $ref: rtc.yaml#
   - if:
       properties:
         compatible: