dt-bindings: Add Broadcom STB USB support

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/usb/brcm,bcm7445-ehci.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Broadcom STB USB EHCI Controller Device Tree Bindings

allOf:

  - $ref: "usb-hcd.yaml"

maintainers:

  - Al Cooper <alcooperx@gmail.com>

properties:

  compatible:

    const: brcm,bcm7445-ehci

  reg:

    maxItems: 1

  interrupts:

    maxItems: 1

  clocks:

    maxItems: 1

    description: Clock specifier for the EHCI clock

  clock-names:

    const: sw_usb

  phys:

    maxItems: 1

  phy-names:

    const: usbphy

required:

  - compatible

  - reg

  - interrupts

  - phys

  - clocks

additionalProperties: false

examples:

  - |

    usb@f0b00300 {

        compatible = "brcm,bcm7445-ehci";

        reg = <0xf0b00300 0xa8>;

        interrupts = <0x0 0x5a 0x0>;

        phys = <&usbphy_0 0x0>;

        phy-names = "usbphy";

        clocks = <&usb20>;

        clock-names = "sw_usb";

    };

...

      device

    - "renesas,rcar-gen3-xhci" for a generic R-Car Gen3 or RZ/G2 compatible

      device

    - "brcm,bcm7445-xhci" for Broadcom STB SoCs with XHCI

    - "xhci-platform" (deprecated)

    When compatible with the generic version, nodes must list the