dt-bindings: usb: Convert FOTG210 to dt schema

This converts the Faraday FOTG210 OTG USB controller to use
a YAML schema. We add all the right includes for OTG controllers
and make it possible to specify dr_mode and phy.

Cc: devicetree@vger.kernel.org
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220925123546.770843-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/faraday,fotg210.yaml

@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2022 Linaro Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/faraday,fotg210.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Faraday Technology FOTG210 HS OTG USB 2.0 controller Bindings
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+allOf:
+  - $ref: usb-drd.yaml#
+  - $ref: usb-hcd.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: faraday,fotg210
+      - items:
+          - const: cortina,gemini-usb
+          - const: faraday,fotg210
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: PCLK
+
+  resets:
+    maxItems: 1
+
+  syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: a phandle to the global Gemini system controller on
+      Gemini systems
+
+  dr_mode: true
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    const: usb2-phy
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/cortina,gemini-clock.h>
+    #include <dt-bindings/reset/cortina,gemini-reset.h>
+    usb0: usb@68000000 {
+        compatible = "cortina,gemini-usb", "faraday,fotg210";
+        reg = <0x68000000 0x1000>;
+        interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
+        resets = <&syscon GEMINI_RESET_USB0>;
+        clocks = <&syscon GEMINI_CLK_GATE_USB0>;
+        clock-names = "PCLK";
+        syscon = <&syscon>;
+        dr_mode = "host";
+    };