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Message-Id: <6TNQQQ.CQL1KN8NARCK@crapouillou.net>
Date:   Mon, 29 Mar 2021 17:15:06 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Simon Ser <contact@...rsion.fr>
Cc:     Maxime Ripard <maxime@...no.tech>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, od@...c.me,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH] drm: DON'T require each CRTC to have a unique primary
 plane



Le lun. 29 mars 2021 à 15:42, Simon Ser <contact@...rsion.fr> a écrit 
:
> On Monday, March 29th, 2021 at 5:39 PM, Paul Cercueil 
> <paul@...pouillou.net> wrote:
> 
>>  Ok, I read that as "all drivers should provide AT LEAST one primary
>>  plane per CRTC", and not as "all drivers should provide ONE AND ONLY
>>  ONE primary plane per CRTC". My bad.
> 
> Yeah, it's a little complicated to document, because it's possible for
> a primary plane to be compatible with multiple CRTCs… We tried to
> improve this [1] recently.
> 
> [1]: 
> https://dri.freedesktop.org/docs/drm/gpu/drm-kms.html#plane-abstraction

Ok, that is definitely much clearer :)

-Paul


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