diff --git a/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml
index f946861e3f8ae73e5a637c063902f8b55be569f7..f2d1dc7e7b3fb5cf1b84b352e150137be5f3fb82 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml
+++ b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml
@@ -21,6 +21,7 @@ properties:
           - const: rockchip,rk2928-pwm
       - items:
           - enum:
+              - rockchip,rk3128-pwm
               - rockchip,rk3368-pwm
               - rockchip,rk3399-pwm
               - rockchip,rv1108-pwm