linux-kernel - Re: [PATCH v3 2/9] dt-bindings: display: add verisilicon,dc

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Message-ID: <6ceb41bc-0597-4ea5-84be-51f53e3bc2d8@kernel.org>
Date: Mon, 24 Nov 2025 12:27:09 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Icenowy Zheng <uwu@...nowy.me>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Drew Fustini <fustini@...nel.org>,
 Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
 Philipp Zabel <p.zabel@...gutronix.de>, Heiko Stuebner <heiko@...ech.de>,
 Andrzej Hajda <andrzej.hajda@...el.com>,
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>,
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>,
 Michal Wilczynski <m.wilczynski@...sung.com>
Cc: Han Gao <rabenda.cn@...il.com>, Yao Zi <ziyao@...root.org>,
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v3 2/9] dt-bindings: display: add verisilicon,dc

On 24/11/2025 12:13, Icenowy Zheng wrote:
> 在 2025-11-24星期一的 12:09 +0100，Krzysztof Kozlowski写道：
>> On 24/11/2025 12:04, Icenowy Zheng wrote:
>>> 在 2025-11-24星期一的 12:01 +0100，Krzysztof Kozlowski写道：
>>>> On 24/11/2025 11:52, Icenowy Zheng wrote:
>>>>> Verisilicon has a series of display controllers prefixed with
>>>>> DC
>>>>> and
>>>>> with self-identification facility like their GC series GPUs.
>>>>>
>>>>> Add a device tree binding for it.
>>>>>
>>>>> Depends on the specific DC model, it can have either one or two
>>>>> display
>>>>> outputs, and each display output could be set to DPI signal or
>>>>> "DP"
>>>>> signal (which seems to be some plain parallel bus to HDMI
>>>>> controllers).
>>>>>> Signed-off-by: Icenowy Zheng <uwu@...nowy.me>
>>>>> Signed-off-by: Icenowy Zheng <zhengxingda@...as.ac.cn>
>>>>
>>>> Wrong DCO chain order. You send it as icenowy.me, so this must be
>>>> last
>>>> SoB. This identity is the last one certifying DCO. Please kindly
>>>> read
>>>> submitting patches, so you know what you are certifying here.
>>>
>>> Well I mapped the @iscas.ac.cn mail to the @icenowy.me one in the
>>> last
>>> patch.
>>>
>>> Or maybe I should make it the first patch?
>>
>> .mailmap has effect on b4 and git send-email, so maybe that's the
>> answer. The problem is that:
>> 1. This email has sender address @icenowy.me
>> 2. It's SoB is not the last one.
> 
> Well, I think a patch that is already sent shouldn't have the From
> field changing when bumping revision, and a patch modified by one
> identity should have the modifying one's SoB added.
> 
> So here I am using the @icenowy.me mail (which can represent the
> @iscas.ac.cn mail according to the mailmap) to send the patch that is
> processed by @iscas.ac.cn mail.
> 
> Sending the patch with @iscas.ac.cn mail needs some extra setup
> (because of some weird security requirement).

I did not ask you to change from. Please read carefully "You send it as
icenowy.me, so this must be last sob"

and later I re-iterated.

If you insist on not fixing the chain, that's a NAK from me because you
must follow the DCO process.

Best regards,
Krzysztof