From: Frieder Schrempf <frieder.schrempf@kontron.de>
To: Marek Szyprowski <m.szyprowski@samsung.com>,
Frieder Schrempf <frieder@fris.de>,
Andrzej Hajda <andrzej.hajda@intel.com>,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@gmail.com>,
dri-devel@lists.freedesktop.org, Inki Dae <inki.dae@samsung.com>,
Jagan Teki <jagan@amarulasolutions.com>,
linux-kernel@vger.kernel.org,
Neil Armstrong <neil.armstrong@linaro.org>,
Robert Foss <rfoss@kernel.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>,
Jonas Karlman <jonas@kwiboo.se>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Marek Vasut <marex@denx.de>
Subject: Re: [RFC PATCH 3/3] drm: bridge: samsung-dsim: Remove init quirk for Exynos
Date: Tue, 18 Apr 2023 15:16:53 +0200 [thread overview]
Message-ID: <cdd90ba1-e9bd-e622-d7f3-de5d762cc2c6@kontron.de> (raw)
In-Reply-To: <0c4f2703-8810-fe0f-76aa-cc6250aea74a@samsung.com>
On 18.04.23 15:12, Marek Szyprowski wrote:
> On 18.04.2023 12:42, Frieder Schrempf wrote:
>> From: Frieder Schrempf <frieder.schrempf@kontron.de>
>>
>> Assuming that with the init flow fixed to meet the documentation at
>> [1] and the pre_enable_prev_first flag set in downstream bridge/panel
>> drivers which require it, we can use the default flow for Exynos as
>> already done for i.MX8M.
>>
>> [1] https://docs.kernel.org/gpu/drm-kms-helpers.html#mipi-dsi-bridge-operation
>>
>> Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
>> ---
>> I have no idea if my assumptions are correct and if this works at all.
>> There's a very good chance it doesn't...
>
> Unfortunately this change breaks all Exynos boards with DSI panels. I've
> check all 4 panels that are in mainline and none worked.
Ok, thanks for testing anyway!
As already mentioned this was rather a shot in the dark, as I didn't
even bother trying to fully understand what's going on on the Exynos side.
For now I will just remove this patch from the series in the next iteration.
prev parent reply other threads:[~2023-04-18 13:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20230418104305eucas1p145a8fa1560520ebe430590abdeabb66e@eucas1p1.samsung.com>
2023-04-18 10:42 ` Frieder Schrempf
2023-04-18 13:12 ` Marek Szyprowski
2023-04-18 13:16 ` Frieder Schrempf [this message]
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