linux-kernel - Re: [PATCH v3 1/4] dt-bindings: usb: Introduce usb-hub.yaml

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Message-ID: <CAE-0n52fsf37Xg+Qpj-VwAiUO-kOWFRXKtqLL4VmxtCzAck2dA@mail.gmail.com>
Date: Mon, 28 Apr 2025 16:47:56 -0700
From: Stephen Boyd <swboyd@...omium.org>
To: Conor Dooley <conor+dt@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Matthias Kaehlcke <mka@...omium.org>, 
	Pin-yen Lin <treapking@...omium.org>, Rob Herring <robh@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-usb@...r.kernel.org
Subject: Re: [PATCH v3 1/4] dt-bindings: usb: Introduce usb-hub.yaml

Quoting Pin-yen Lin (2025-04-22 01:28:27)
> diff --git a/Documentation/devicetree/bindings/usb/usb-hub.yaml b/Documentation/devicetree/bindings/usb/usb-hub.yaml
> new file mode 100644
> index 00000000000000..5238ab10576308
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/usb-hub.yaml
> @@ -0,0 +1,84 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/usb-hub.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Generic USB Hub
> +
> +maintainers:
> +  - Pin-yen Lin <treapking@...omium.org>
> +
> +allOf:
> +  - $ref: usb-device.yaml#
> +
> +properties:
> +  '#address-cells':
> +    const: 1
> +
> +  peer-hub:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      phandle to the peer hub on the controller.
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +    description:
> +      The downstream facing USB ports
> +
> +    patternProperties:
> +      "^port@[1-9a-f][0-9a-f]*$":
> +        $ref: /schemas/graph.yaml#/properties/port
> +
> +patternProperties:
> +  '^.*@[1-9a-f][0-9a-f]*$':
> +    description: The hard wired USB devices
> +    type: object
> +    $ref: /schemas/usb/usb-device.yaml
> +    additionalProperties: true
> +
> +required:
> +  - compatible
> +  - reg

Can 'reg' be dropped because usb-device.yaml requires it?