linux-kernel - Re: [PATCH 3/4] arm64: dts: apple: Add touchbar digitizer nodes

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Message-ID: <9b39b9c6-3f30-4f5d-87fd-fabe06a70543@kernel.org>
Date: Wed, 27 Nov 2024 11:34:58 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Sasha Finkelstein <fnkl.kernel@...il.com>
Cc: Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
 Alyssa Rosenzweig <alyssa@...enzweig.io>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Henrik Rydberg <rydberg@...math.org>,
 asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-input@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Janne Grunau <j@...nau.net>
Subject: Re: [PATCH 3/4] arm64: dts: apple: Add touchbar digitizer nodes

On 27/11/2024 11:31, Sasha Finkelstein wrote:
> On Wed, 27 Nov 2024 at 09:55, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>>> +             touchbar0 = &touchbar0;
>>
>> Not used, drop.
> 
> Used by the bootloader to forward calibration data to the correct node.

I suggest document it with a comment, otherwise each undocumented alias
without in-kernel user is a subject of removal later during cleanup.

Best regards,
Krzysztof