dt-bindings: phy: rockchip: Convert RK3399 PCIe PHY to schema

Convert the Rockchip RK3399 PCIe PHY to DT schema format. Move the
example to the GRF binding as that has the complete block.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250415011824.2320039-1-robh@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/rockchip,rk3399-pcie-phy.yaml

@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/rockchip,rk3399-pcie-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip RK3399 PCIE PHY
+
+maintainers:
+  - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+  compatible:
+    const: rockchip,rk3399-pcie-phy
+
+  '#phy-cells':
+    oneOf:
+      - const: 0
+        deprecated: true
+      - const: 1
+        description: One lane per phy mode
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: refclk
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: phy
+
+required:
+  - compatible
+  - '#phy-cells'
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+additionalProperties: false
+
+...

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

@@ -1,36 +0,0 @@
-Rockchip PCIE PHY
------------------------
-
-Required properties:
- - compatible: rockchip,rk3399-pcie-phy
- - clocks: Must contain an entry in clock-names.
-	See ../clocks/clock-bindings.txt for details.
- - clock-names: Must be "refclk"
- - resets: Must contain an entry in reset-names.
-	See ../reset/reset.txt for details.
- - reset-names: Must be "phy"
-
-Required properties for legacy PHY mode (deprecated):
- - #phy-cells: must be 0
-
-Required properties for per-lane PHY mode (preferred):
- - #phy-cells: must be 1
-
-Example:
-
-grf: syscon@ff770000 {
-	compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
-	#address-cells = <1>;
-	#size-cells = <1>;
-
-	...
-
-	pcie_phy: pcie-phy {
-		compatible = "rockchip,rk3399-pcie-phy";
-		#phy-cells = <0>;
-		clocks = <&cru SCLK_PCIEPHY_REF>;
-		clock-names = "refclk";
-		resets = <&cru SRST_PCIEPHY>;
-		reset-names = "phy";
-	};
-};

Documentation/devicetree/bindings/soc/rockchip/grf.yaml

@@ -201,8 +201,8 @@ allOf:
 
         pcie-phy:
           type: object
-          description:
-            Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt
+          $ref: /schemas/phy/rockchip,rk3399-pcie-phy.yaml#
+          unevaluatedProperties: false
 
       patternProperties:
         "^phy@[0-9a-f]+$":
@@ -326,6 +326,15 @@ examples:
         #phy-cells = <0>;
       };
 
+      pcie-phy {
+        compatible = "rockchip,rk3399-pcie-phy";
+        #phy-cells = <1>;
+        clocks = <&cru SCLK_PCIEPHY_REF>;
+        clock-names = "refclk";
+        resets = <&cru SRST_PCIEPHY>;
+        reset-names = "phy";
+      };
+
       phy@f780 {
         compatible = "rockchip,rk3399-emmc-phy";
         reg = <0xf780 0x20>;