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diff --git a/Bindings/phy/sunplus,sp7021-usb2-phy.yaml b/Bindings/phy/sunplus,sp7021-usb2-phy.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
+---
+$id: http://devicetree.org/schemas/phy/sunplus,sp7021-usb2-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 USB 2.0 PHY Controller
+
+maintainers:
+ - Vincent Shih <vincent.sunplus@gmail.com>
+
+properties:
+ compatible:
+ const: sunplus,sp7021-usb2-phy
+
+ reg:
+ items:
+ - description: UPHY register region
+ - description: MOON4 register region
+
+ reg-names:
+ items:
+ - const: phy
+ - const: moon4
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ "#phy-cells":
+ const: 0
+
+ nvmem-cell-names:
+ description: names corresponding to the nvmem cells of disconnect voltage
+ const: disc_vol
+
+ nvmem-cells:
+ description: nvmem cell address of disconnect voltage
+ maxItems: 1
+
+ sunplus,disc-vol-addr-off:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: the otp address offset of disconnect voltage
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - resets
+ - "#phy-cells"
+ - nvmem-cell-names
+ - nvmem-cells
+ - sunplus,disc-vol-addr-off
+
+additionalProperties: false
+
+examples:
+ - |
+ sp_uphy0: usb-phy@9c004a80 {
+ compatible = "sunplus,sp7021-usb2-phy";
+ reg = <0x9c004a80 0x80>, <0x9c000248 0x10>;
+ reg-names = "phy", "moon4";
+ clocks = <&clkc 0x3d>;
+ resets = <&rstc 0x2d>;
+ #phy-cells = <0>;
+ nvmem-cell-names = "disc_vol";
+ nvmem-cells = <&disc_vol>;
+ sunplus,disc-vol-addr-off = <0>;
+ };