dt-bindings: usb: samsung,exynos-usb2: convert to dtschema

Convert the Samsung Exynos SoC USB 2.0 EHCI and OHCI Controller bindings
to DT schema format.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220302190938.6195-3-krzysztof.kozlowski@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

-Samsung Exynos SoC USB controller
-
-The USB devices interface with USB controllers on Exynos SOCs.
-The device node has following properties.
-
-EHCI
-Required properties:
- - compatible: should be "samsung,exynos4210-ehci" for USB 2.0
-   EHCI controller in host mode.
- - reg: physical base address of the controller and length of memory mapped
-   region.
- - interrupts: interrupt number to the cpu.
- - clocks: from common clock binding: handle to usb clock.
- - clock-names: from common clock binding: Shall be "usbhost".
- - phys: from the *Generic PHY* bindings; array specifying phy(s) used
-   by the root port.
- - phy-names: from the *Generic PHY* bindings; array of the names for
-   each phy for the root ports, must be a subset of the following:
-   "host", "hsic0", "hsic1".
-
-Optional properties:
- - samsung,vbus-gpio:  if present, specifies the GPIO that
-   needs to be pulled up for the bus to be powered.
-
-Example:
-
-	usb@12110000 {
-		compatible = "samsung,exynos4210-ehci";
-		reg = <0x12110000 0x100>;
-		interrupts = <0 71 0>;
-		samsung,vbus-gpio = <&gpx2 6 1 3 3>;
-
-		clocks = <&clock 285>;
-		clock-names = "usbhost";
-
-		phys = <&usb2phy 1>;
-		phy-names = "host";
-	};
-
-OHCI
-Required properties:
- - compatible: should be "samsung,exynos4210-ohci" for USB 2.0
-   OHCI companion controller in host mode.
- - reg: physical base address of the controller and length of memory mapped
-   region.
- - interrupts: interrupt number to the cpu.
- - clocks: from common clock binding: handle to usb clock.
- - clock-names: from common clock binding: Shall be "usbhost".
- - phys: from the *Generic PHY* bindings; array specifying phy(s) used
-   by the root port.
- - phy-names: from the *Generic PHY* bindings; array of the names for
-   each phy for the root ports, must be a subset of the following:
-   "host", "hsic0", "hsic1".
-
-Example:
-	usb@12120000 {
-		compatible = "samsung,exynos4210-ohci";
-		reg = <0x12120000 0x100>;
-		interrupts = <0 71 0>;
-
-		clocks = <&clock 285>;
-		clock-names = "usbhost";
-
-		phys = <&usb2phy 1>;
-		phy-names = "host";
-	};

Documentation/devicetree/bindings/usb/samsung,exynos-usb2.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/samsung,exynos-usb2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC USB 2.0 EHCI/OHCI Controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos4210-ehci
+      - samsung,exynos4210-ohci
+
+  '#address-cells':
+    const: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: usbhost
+
+  interrupts:
+    maxItems: 1
+
+  phys:
+    minItems: 1
+    maxItems: 3
+
+  phy-names:
+    items:
+      enum: [host, hsic0, hsic1]
+    minItems: 1
+    maxItems: 3
+
+  reg:
+    maxItems: 1
+
+  samsung,vbus-gpio:
+    description:
+      Only for controller in EHCI mode, if present, specifies the GPIO that
+      needs to be pulled up for the bus to be powered.
+
+  '#size-cells':
+    const: 0
+
+patternProperties:
+  "^.*@[0-9a-f]{1,2}$":
+    description: The hard wired USB devices
+    type: object
+    $ref: /usb/usb-device.yaml
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - interrupts
+  - phys
+  - phy-names
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: samsung,exynos4210-ohci
+    then:
+      properties:
+        samsung,vbus-gpio: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5420.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    usb@12110000 {
+        compatible = "samsung,exynos4210-ehci";
+        reg = <0x12110000 0x100>;
+        interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clock CLK_USBH20>;
+        clock-names = "usbhost";
+        phys = <&usb2_phy 0>;
+        phy-names = "host";
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        hub@1 {
+            compatible = "usb0424,9514";
+            reg = <1>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            usbether@1 {
+                compatible = "usb0424,ec00";
+                reg = <1>;
+                local-mac-address = [00 00 00 00 00 00];
+            };
+        };
+    };
+
+    usb@12120000 {
+        compatible = "samsung,exynos4210-ohci";
+        reg = <0x12120000 0x100>;
+        interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clock CLK_USBH20>;
+        clock-names = "usbhost";
+        phys = <&usb2_phy 0>;
+        phy-names = "host";
+    };