diff --git a/Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml b/Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
index 85d9efb743ee..d9ef86729011 100644
--- a/Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
+++ b/Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
@@ -60,6 +60,7 @@ properties:
     default: 0
 
   regstep:
+    $ref: /schemas/types.yaml#/definitions/uint32
     description: |
       deprecated, use reg-shift above
     deprecated: true