dt-bindings: phy: Add StarFive JH7110 USB PHY

Add StarFive JH7110 SoC USB 2.0 PHY dt-binding.
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Hal Feng <hal.feng@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230629075115.11934-2-minda.chen@starfivetech.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/starfive,jh7110-usb-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 USB 2.0 PHY
+
+maintainers:
+  - Minda Chen <minda.chen@starfivetech.com>
+
+properties:
+  compatible:
+    const: starfive,jh7110-usb-phy
+
+  reg:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  clocks:
+    items:
+      - description: PHY 125m
+      - description: app 125m
+
+  clock-names:
+    items:
+      - const: 125m
+      - const: app_125m
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    phy@10200000 {
+        compatible = "starfive,jh7110-usb-phy";
+        reg = <0x10200000 0x10000>;
+        clocks = <&syscrg 95>,
+                 <&stgcrg 6>;
+        clock-names = "125m", "app_125m";
+        #phy-cells = <0>;
+    };