dt-bindings: phy: Convert UniPhier PCIe-PHY controller to json-schema

Convert the UniPhier PCIe-PHY controller to DT schema format.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/phy/socionext,uniphier-pcie-phy.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/socionext,uniphier-pcie-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Socionext UniPhier PCIe PHY
+
+description: |
+  This describes the devicetree bindings for PHY interface built into
+  PCIe controller implemented on Socionext UniPhier SoCs.
+
+maintainers:
+  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+
+properties:
+  compatible:
+    enum:
+      - socionext,uniphier-pro5-pcie-phy
+      - socionext,uniphier-ld20-pcie-phy
+      - socionext,uniphier-pxs3-pcie-phy
+
+  reg:
+    description: PHY register region (offset and length)
+
+  "#phy-cells":
+    const: 0
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    oneOf:
+      - items:            # for Pro5
+        - const: gio
+        - const: link
+      - const: link       # for others
+
+  resets:
+    minItems: 1
+    maxItems: 2
+
+  reset-names:
+    oneOf:
+      - items:            # for Pro5
+        - const: gio
+        - const: link
+      - const: link       # for others
+
+  socionext,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: A phandle to system control to set configurations for phy
+
+required:
+  - compatible
+  - reg
+  - "#phy-cells"
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+additionalProperties: false
+
+examples:
+  - |
+    pcie_phy: phy@66038000 {
+        compatible = "socionext,uniphier-ld20-pcie-phy";
+        reg = <0x66038000 0x4000>;
+        #phy-cells = <0>;
+        clock-names = "link";
+        clocks = <&sys_clk 24>;
+        reset-names = "link";
+        resets = <&sys_rst 24>;
+        socionext,syscon = <&soc_glue>;
+    };

Documentation/devicetree/bindings/phy/uniphier-pcie-phy.txt

-Socionext UniPhier PCIe PHY bindings
-
-This describes the devicetree bindings for PHY interface built into
-PCIe controller implemented on Socionext UniPhier SoCs.
-
-Required properties:
-- compatible: Should contain one of the following:
-    "socionext,uniphier-pro5-pcie-phy" - for Pro5 PHY
-    "socionext,uniphier-ld20-pcie-phy" - for LD20 PHY
-    "socionext,uniphier-pxs3-pcie-phy" - for PXs3 PHY
-- reg: Specifies offset and length of the register set for the device.
-- #phy-cells: Must be zero.
-- clocks: A list of phandles to the clock gate for PCIe glue layer
-	including this phy.
-- clock-names: For Pro5 only, should contain the following:
-    "gio", "link" - for Pro5 SoC
-- resets: A list of phandles to the reset line for PCIe glue layer
-	including this phy.
-- reset-names: For Pro5 only, should contain the following:
-    "gio", "link" - for Pro5 SoC
-
-Optional properties:
-- socionext,syscon: A phandle to system control to set configurations
-	for phy.
-
-Refer to phy/phy-bindings.txt for the generic PHY binding properties.
-
-Example:
-	pcie_phy: phy@66038000 {
-		compatible = "socionext,uniphier-ld20-pcie-phy";
-		reg = <0x66038000 0x4000>;
-		#phy-cells = <0>;
-		clocks = <&sys_clk 24>;
-		resets = <&sys_rst 24>;
-		socionext,syscon = <&soc_glue>;
-	};