linux-kernel - Re: [PATCH 04/26] drm/bridge: make of_drm_find_bridge() a wrapper of drm_of_find

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Message-Id: <DEVKRHI0WLHG.1J4ULCK2DYF2Q@bootlin.com>
Date: Thu, 11 Dec 2025 18:48:22 +0100
From: "Luca Ceresoli" <luca.ceresoli@...tlin.com>
To: "Maxime Ripard" <mripard@...nel.org>
Cc: "Andrzej Hajda" <andrzej.hajda@...el.com>, "Neil Armstrong"
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Subject: Re: [PATCH 04/26] drm/bridge: make of_drm_find_bridge() a wrapper
 of drm_of_find_bridge()

Hi Maxime,

On Mon Dec 1, 2025 at 5:34 PM CET, Maxime Ripard wrote:
...
>> The main user to be converted is drm_of_find_panel_or_bridge(), which is
>> very tricky, and in turn it is used by devm_drm_of_get_bridge(). We
>> discussed this in the past and the conclusion was a rework of the drm_panel
>> lifetime was needed to be able to properly replace
>> drm_of_find_panel_or_bridge().
>
> Yeah. I wonder, now that we have a proper allocation scheme for panels
> too, if we shouldn't just create a panel_bridge for every panel we
> allocate.

I would definitely second this idea.

>> Maxime, Anusha, are you aware of any steps forward about dynamic panel
>> lifetime, after devm_drm_panel_alloc()?
>
> AFAIK, Anusha stopped working on it. I'm fairly busy at the moment, but
> early next year I'll try to revive that effort.

That would be great! Please Cc me so I can review and test your work.

Luca

--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com