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Message-ID: <601bd136-ddae-2889-0e63-5f62484ec849@denx.de>
Date: Mon, 15 May 2023 15:47:45 +0200
From: Marek Vasut <marex@...x.de>
To: mike.looijmans@...ic.nl,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Richard Leitner <richard.leitner@...ux.dev>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, linux-usb@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: usb: usb251xb: correct swap-dx-lanes type to
uint32
On 5/15/23 15:17, mike.looijmans@...ic.nl wrote:
> See below...
>
> Met vriendelijke groet / kind regards,
>
> Mike Looijmans
> System Expert
>
>
> TOPIC Embedded Products B.V.
> Materiaalweg 4, 5681 RJ Best
> The Netherlands
>
> T: +31 (0) 499 33 69 69
> E: mike.looijmans@...icproducts.com
> W: www.topic.nl
Can you please drop this part next time ?
> Please consider the environment before printing this e-mail
> On 15-05-2023 14:55, Marek Vasut wrote:
>> On 5/15/23 12:33, Krzysztof Kozlowski wrote: diff --git
>> a/Documentation/devicetree/bindings/usb/usb251xb.yaml
>> b/Documentation/devicetree/bindings/usb/usb251xb.yaml
>>> index 4d1530816817..ac5b99710332 100644
>>> --- a/Documentation/devicetree/bindings/usb/usb251xb.yaml
>>> +++ b/Documentation/devicetree/bindings/usb/usb251xb.yaml
>>> @@ -231,7 +231,7 @@ properties:
>>> power-on sequence to a port until the port has adequate power.
>>> swap-dx-lanes:
>>> - $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + $ref: /schemas/types.yaml#/definitions/uint32-array
>>> description: |
>>> Specifies the ports which will swap the differential-pair
>>> (D+/D-),
>>> default is not-swapped.
>>
>> Would it make more sense to update the driver instead ? I doubt you
>> could have more than 256 ports on this device after all.
>
>
> I guess there's a bunch of devicetrees already out there using the
> (misdocumented) 32-bit array binding, they'd break in a bad way...
I think it is the other way around -- if the binding was documented as
u8, then the existing DTs should use the u8 type if they are compliant
to the binding document.
I see one board in next which uses this property and sets it to 0 , so
this one is not affected either way:
arch/arm64/boot/dts/freescale/imx8mq-zii-ultra-rmb3.dts:
swap-dx-lanes = <0>;
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