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diff --git a/Documentation/devicetree/bindings/phy/mediatek,dsi-phy.yaml b/Documentation/devicetree/bindings/phy/mediatek,dsi-phy.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) 2020 MediaTek
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/mediatek,dsi-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MIPI Display Serial Interface (DSI) PHY binding
+
+maintainers:
+  - Chun-Kuang Hu <chunkuang.hu@kernel.org>
+  - Philipp Zabel <p.zabel@pengutronix.de>
+  - Chunfeng Yun <chunfeng.yun@mediatek.com>
+
+description: The MIPI DSI PHY supports up to 4-lane output.
+
+properties:
+  $nodename:
+    pattern: "^dsi-phy@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - mediatek,mt2701-mipi-tx
+      - mediatek,mt7623-mipi-tx
+      - mediatek,mt8173-mipi-tx
+      - mediatek,mt8183-mipi-tx
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: PLL reference clock
+
+  clock-output-names:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  "#clock-cells":
+    const: 0
+
+  nvmem-cells:
+    maxItems: 1
+    description: A phandle to the calibration data provided by a nvmem device,
+      if unspecified, default values shall be used.
+
+  nvmem-cell-names:
+    items:
+      - const: calibration-data
+
+  drive-strength-microamp:
+    description: adjust driving current
+    multipleOf: 200
+    minimum: 2000
+    maximum: 6000
+    default: 4600
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-output-names
+  - "#phy-cells"
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8173-clk.h>
+    dsi-phy@10215000 {
+        compatible = "mediatek,mt8173-mipi-tx";
+        reg = <0x10215000 0x1000>;
+        clocks = <&clk26m>;
+        clock-output-names = "mipi_tx0_pll";
+        drive-strength-microamp = <4000>;
+        nvmem-cells= <&mipi_tx_calibration>;
+        nvmem-cell-names = "calibration-data";
+        #clock-cells = <0>;
+        #phy-cells = <0>;
+    };
+
+...