linux-kernel - Re: [PATCH 3/5] gpu: drm: adp: Add a backlight driver for the Summit LCD

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Message-ID: <d966732c-94d1-478c-94d3-6565285192eb@kernel.org>
Date: Tue, 26 Nov 2024 17:52:17 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Sasha Finkelstein <fnkl.kernel@...il.com>
Cc: Nick Chan <towinchenmi@...il.com>, Hector Martin <marcan@...can.st>,
 Sven Peter <sven@...npeter.dev>, Alyssa Rosenzweig <alyssa@...enzweig.io>,
 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>,
 Neil Armstrong <neil.armstrong@...aro.org>,
 Jessica Zhang <quic_jesszhan@...cinc.com>, asahi@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, dri-devel@...ts.freedesktop.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] gpu: drm: adp: Add a backlight driver for the Summit
 LCD

On 26/11/2024 17:34, Sasha Finkelstein wrote:
> On Mon, 25 Nov 2024 at 16:07, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>>
>> BTW, max-brightness is a property of backlight, not panel, I think.
> This is an oled panel, so no separate backlight device, the mipi commands
> just change the pixel brightness. There is prior art in other bindings on having
> the max-brightness property attached to the panel itself.

Where? git grep gave me only one result for bindings - old Samsung panel
from 15 years ago. If you refer to this one, then use it as example for
the bindings with similar explanation as the commit introducing brightness?

Best regards,
Krzysztof