linux-kernel - Re: [PATCH 2/6] dt-bindings: usb: cdns,usb3: support USB devices in DT

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Message-ID: <4732491.5fSG56mABF@steina-w>
Date: Fri, 19 Dec 2025 09:55:31 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>,
 Peter Chen <peter.chen@...nel.org>, Pawel Laszczak <pawell@...ence.com>,
 Roger Quadros <rogerq@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Magnus Damm <magnus.damm@...il.com>,
 Marek Vasut <marex@...x.de>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
 linux-usb@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux@...tq-group.com
Subject:
 Re: [PATCH 2/6] dt-bindings: usb: cdns,usb3: support USB devices in DT

Am Donnerstag, 18. Dezember 2025, 16:20:49 CET schrieb Alexander Stein:
> Reference usb-hxci.yaml in host mode in order to support on-board USB
> hubs.
> 
> Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
> ---
>  Documentation/devicetree/bindings/usb/cdns,usb3.yaml | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
> index f454ddd9bbaa6..1f7f0adc3b1ed 100644
> --- a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
> +++ b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
> @@ -85,6 +85,17 @@ required:
>  
>  allOf:
>    - $ref: usb-drd.yaml#
> +  - if:
> +      properties:
> +        dr_mode:
> +          const: peripheral
> +
> +      required:
> +        - dr_mode
> +    then:
> +      $ref: usb.yaml#
> +    else:
> +      $ref: usb-xhci.yaml#
>  
>  unevaluatedProperties: false
>  
> 

This one is actually independent of the rest in this series and can be
picked on it's own, especially as I won't be able to work on the board
support until February. I just wanted to give some context / usage.

Best regards,
Alexander
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