dt-bindings: phy: imx8mq-usb-phy: convert to json schema

Convert to jason schema.

Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: linux-phy@lists.infradead.org
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210715082536.1882077-5-aisheng.dong@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.txt

@@ -1,20 +0,0 @@
-* Freescale i.MX8MQ USB3 PHY binding
-
-Required properties:
-- compatible:	Should be "fsl,imx8mq-usb-phy" or "fsl,imx8mp-usb-phy"
-- #phys-cells:	must be 0 (see phy-bindings.txt in this directory)
-- reg:		The base address and length of the registers
-- clocks:	phandles to the clocks for each clock listed in clock-names
-- clock-names:	must contain "phy"
-
-Optional properties:
-- vbus-supply: A phandle to the regulator for USB VBUS.
-
-Example:
-	usb3_phy0: phy@381f0040 {
-		compatible = "fsl,imx8mq-usb-phy";
-		reg = <0x381f0040 0x40>;
-		clocks = <&clk IMX8MQ_CLK_USB1_PHY_ROOT>;
-		clock-names = "phy";
-		#phy-cells = <0>;
-	};

Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/fsl,imx8mq-usb-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8MQ USB3 PHY binding
+
+maintainers:
+  - Li Jun <jun.li@nxp.com>
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx8mq-usb-phy
+      - fsl,imx8mp-usb-phy
+
+  reg:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: phy
+
+  vbus-supply:
+    description:
+      A phandle to the regulator for USB VBUS.
+
+required:
+  - compatible
+  - reg
+  - "#phy-cells"
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8mq-clock.h>
+    usb3_phy0: phy@381f0040 {
+        compatible = "fsl,imx8mq-usb-phy";
+        reg = <0x381f0040 0x40>;
+        clocks = <&clk IMX8MQ_CLK_USB1_PHY_ROOT>;
+        clock-names = "phy";
+        #phy-cells = <0>;
+    };