diff --git a/Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml b/Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml
index c21139dcc91f..76e25b9efebd 100644
--- a/Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml
+++ b/Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml
@@ -50,6 +50,7 @@ required:
   - interrupts
   - phys
   - phy-names
+  - reg
 
 allOf:
   - $ref: usb-hcd.yaml#