dt-bindings: usb: samsung,exynos-dwc3: convert to dtschema

Convert the Samsung Exynos SoC USB 3.0 DWC3 Controller bindings to DT
schema format.

Reviewed-by: Rob Herring <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Documentation/devicetree/bindings/usb/exynos-usb.txt

···
 		phys = <&usb2phy 1>;
 		phy-names = "host";
 	};
-
-DWC3
-Required properties:
- - compatible: should be one of the following -
-	       "samsung,exynos5250-dwusb3": for USB 3.0 DWC3 controller on
-					    Exynos5250/5420.
-	       "samsung,exynos5433-dwusb3": for USB 3.0 DWC3 controller on
-					    Exynos5433.
-	       "samsung,exynos7-dwusb3": for USB 3.0 DWC3 controller on Exynos7.
- - #address-cells, #size-cells : should be '1' if the device has sub-nodes
-				 with 'reg' property.
- - ranges: allows valid 1:1 translation between child's address space and
-	   parent's address space
- - clocks: Clock IDs array as required by the controller.
- - clock-names: Names of clocks corresponding to IDs in the clock property.
-                Following clock names shall be provided for different
-                compatibles:
-                 - samsung,exynos5250-dwusb3: "usbdrd30",
-                 - samsung,exynos5433-dwusb3: "aclk", "susp_clk", "pipe_pclk",
-                                              "phyclk",
-                 - samsung,exynos7-dwusb3: "usbdrd30", "usbdrd30_susp_clk",
-                                           "usbdrd30_axius_clk"
- - vdd10-supply: 1.0V powr supply
- - vdd33-supply: 3.0V/3.3V power supply
-
-Sub-nodes:
-The dwc3 core should be added as subnode to Exynos dwc3 glue.
-- dwc3 :
-   The binding details of dwc3 can be found in:
-   Documentation/devicetree/bindings/usb/snps,dwc3.yaml
-
-Example:
-	usb@12000000 {
-		compatible = "samsung,exynos5250-dwusb3";
-		clocks = <&clock 286>;
-		clock-names = "usbdrd30";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-		vdd10-supply = <&ldo11_reg>;
-		vdd33-supply = <&ldo9_reg>;
-
-		dwc3 {
-			compatible = "synopsys,dwc3";
-			reg = <0x12000000 0x10000>;
-			interrupts = <0 72 0>;
-			usb-phy = <&usb2_phy &usb3_phy>;
-		};
-	};

Documentation/devicetree/bindings/usb/samsung,exynos-dwc3.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/samsung,exynos-dwc3.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC USB 3.0 DWC3 Controller
+
+maintainers:
+  - Krzysztof Kozlowski <[e-mail]>
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos5250-dwusb3
+      - samsung,exynos5433-dwusb3
+      - samsung,exynos7-dwusb3
+
+  '#address-cells':
+    const: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 4
+
+  clock-names:
+    minItems: 1
+    maxItems: 4
+
+  ranges: true
+
+  '#size-cells':
+    const: 1
+
+  vdd10-supply:
+    description: 1.0V power supply
+
+  vdd33-supply:
+    description: 3.0V/3.3V power supply
+
+patternProperties:
+  "^usb@[0-9a-f]+$":
+    $ref: snps,dwc3.yaml#
+    description: Required child node
+
+required:
+  - compatible
+  - '#address-cells'
+  - clocks
+  - clock-names
+  - ranges
+  - '#size-cells'
+  - vdd10-supply
+  - vdd33-supply
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos5250-dwusb3
+    then:
+      properties:
+        clocks:
+          minItems: 1
+          maxItems: 1
+        clock-names:
+          items:
+            - const: usbdrd30
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos54333-dwusb3
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          items:
+            - const: aclk
+            - const: susp_clk
+            - const: pipe_pclk
+            - const: phyclk
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos7-dwusb3
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: usbdrd30
+            - const: usbdrd30_susp_clk
+            - const: usbdrd30_axius_clk
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5420.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    usb {
+        compatible = "samsung,exynos5250-dwusb3";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+        clocks = <&clock CLK_USBD300>;
+        clock-names = "usbdrd30";
+        vdd33-supply = <&ldo9_reg>;
+        vdd10-supply = <&ldo11_reg>;
+
+        usb@12000000 {
+            compatible = "snps,dwc3";
+            reg = <0x12000000 0x10000>;
+            interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+            phys = <&usbdrd_phy0 0>, <&usbdrd_phy0 1>;
+            phy-names = "usb2-phy", "usb3-phy";
+            snps,dis_u3_susphy_quirk;
+        };
+    };