lkml.org 
[lkml]   [2021]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v4 24/24] drm/exynos: dsi: Adjust probe order
From
Date
Hi,

On 13.09.2021 12:30, Andrzej Hajda wrote:
> W dniu 10.09.2021 o 12:12, Maxime Ripard pisze:
>> Without proper care and an agreement between how DSI hosts and devices
>> drivers register their MIPI-DSI entities and potential components, we can
>> end up in a situation where the drivers can never probe.
>>
>> Most drivers were taking evasive maneuvers to try to workaround this,
>> but not all of them were following the same conventions, resulting in
>> various incompatibilities between DSI hosts and devices.
>>
>> Now that we have a sequence agreed upon and documented, let's convert
>> exynos to it.
>>
>> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> This patch should be dropped, as it will probably break the driver.
>
> Exynos is already compatible with the pattern
> register-bus-then-get-sink, but it adds/removes panel/bridge
> dynamically, so it creates drm_device without waiting for downstream sink.

Right, this patch breaks Exynos DSI driver operation. Without it, the
whole series works fine on all Exynos based test boards.

Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland

\
 
 \ /
  Last update: 2021-09-17 14:36    [W:0.087 / U:0.680 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site