Convert the Amlogic Meson GXL USB2 PHY bindings to dt-schema.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 .../bindings/phy/amlogic,meson-gxl-usb2-phy.yaml   | 56 ++++++++++++++++++++++
 .../devicetree/bindings/phy/meson-gxl-usb2-phy.txt | 21 --------
 2 files changed, 56 insertions(+), 21 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/amlogic,meson-gxl-usb2-phy.yaml b/Documentation/devicetree/bindings/phy/amlogic,meson-gxl-usb2-phy.yaml
new file mode 100644
index 000000000000..4dd287f1f400
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/amlogic,meson-gxl-usb2-phy.yaml

@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/amlogic,meson-gxl-usb2-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Meson GXL USB2 PHY
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+properties:
+  compatible:
+    const: amlogic,meson-gxl-usb2-phy
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: phy
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: phy
+
+  "#phy-cells":
+    const: 0
+
+  phy-supply: true
+
+required:
+  - compatible
+  - reg
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    phy@78000 {
+          compatible = "amlogic,meson-gxl-usb2-phy";
+          reg = <0x78000 0x20>;
+          clocks = <&xtal>;
+          clock-names = "phy";
+          resets = <&phy_reset>;
+          reset-names = "phy";
+          #phy-cells = <0>;
+          phy-supply = <&usb2_supply>;