diff --git a/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
index 6461eb4f4a27..92df6e453f64 100644
--- a/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
@@ -20,6 +20,7 @@ properties:
           - enum:
               - rockchip,px30-wdt
               - rockchip,rk3066-wdt
+              - rockchip,rk3128-wdt
               - rockchip,rk3188-wdt
               - rockchip,rk3228-wdt
               - rockchip,rk3288-wdt