linux-kernel - Re: [PATCH v1 1/2] drm/panel-edp: Add override bpc quirk for generic edp

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Message-ID: <3ad3ee47f29f7b6479ec19b8fb61eee443a17264@intel.com>
Date: Thu, 30 Oct 2025 11:48:06 +0200
From: Jani Nikula <jani.nikula@...el.com>
To: Doug Anderson <dianders@...omium.org>, Ajye Huang
 <ajye_huang@...pal.corp-partner.google.com>
Cc: linux-kernel@...r.kernel.org, Neil Armstrong
 <neil.armstrong@...aro.org>, Jessica Zhang <jesszhan0024@...il.com>,
 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>,
 dri-devel@...ts.freedesktop.org, jazhan@...gle.com
Subject: Re: [PATCH v1 1/2] drm/panel-edp: Add override bpc quirk for
 generic edp

On Wed, 29 Oct 2025, Doug Anderson <dianders@...omium.org> wrote:
> At first I was thinking that the quirks in "drm_edid.c" were probably
> just for "DP" display, but then I just realized that they probably
> also are for "eDP" panels. Specifically I think Intel hardware doesn't
> use panel-edp.c so I think the only place quirks could get applied (if
> an eDP panel was also used on Intel hardware) was from "drm_edid.c".
>
> Any chance you could confirm if EDID_QUIRK_FORCE_6BPC works for you?
>
> Does anyone else CCed have an opinion of which they like better?

No strong opinions, but obviously having it in drm_edid.c would be more
generic. Until you encounter panels where you need to force something
other than 6 bpc, when it stops being generic and becomes an
obstacle. ;)

BR,
Jani.

-- 
Jani Nikula, Intel