linux-kernel - Re: [PATCH 1/2] arm64: dts: rockchip: Simplify usb-c-connector port on rk3566-pinenote

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Message-ID: <19169092-78f8-4b86-9f43-ea7a2ea20b9f@kernel.org>
Date: Mon, 10 Nov 2025 08:12:32 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Heiko Stübner <heiko@...ech.de>,
 Diederik de Haas <diederik@...ow-tech.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Samuel Holland <samuel@...lland.org>
Cc: hrdl <git@...l.eu>, phantomas <phantomas@...ntomas.xyz>,
 Dragan Simic <dsimic@...jaro.org>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: rockchip: Simplify usb-c-connector port
 on rk3566-pinenote

On 09/11/2025 23:16, Heiko Stübner wrote:
> Am Sonntag, 9. November 2025, 18:37:26 Mitteleuropäische Normalzeit schrieb Krzysztof Kozlowski:
>> On 09/11/2025 18:05, Diederik de Haas wrote:
>>> The USB-C connector on the PineNote has only 1 port, so there's no need
>>> for a 'ports' node with address-/size-cells properties as a single
>>> 'port' node suffices.
>>>
>>> This fixes the following DT validation issue:
>>>
>>>   Warning (graph_child_address): /i2c@...c0000/tcpc@...connector/ports:
>>>     graph node has single child node 'port@0',
>>>     #address-cells/#size-cells are not necessary
>>
>> This is not a DT validation, but DTC warning which we do not really fix.
> 
> That is good to know. Is the same true for other dtc warnings?
>

No, depends, the same for compiler warnings. That's the only warning I
remember we considered moving from W=1 to W=2.

Best regards,
Krzysztof