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diff --git a/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
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+++ b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/sunplus,sp7021-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SoC SP7021 PWM Controller
+
+maintainers:
+  - Hammer Hsieh <hammerh0314@gmail.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: sunplus,sp7021-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#pwm-cells':
+    const: 2
+
+unevaluatedProperties: false
+
+required:
+  - reg
+  - clocks
+
+examples:
+  - |
+    pwm: pwm@9c007a00 {
+      compatible = "sunplus,sp7021-pwm";
+      reg = <0x9c007a00 0x80>;
+      clocks = <&clkc 0xa2>;
+      #pwm-cells = <2>;
+    };