linux-kernel - Re: [PATCH] drm/panel: sony-td4353-jdi: Enable prepare_prev

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Message-ID: <c15adbf1-ec19-4592-a241-2332d836a3f6@collabora.com>
Date: Tue, 2 Dec 2025 09:32:03 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Marijn Suijten <marijn.suijten@...ainline.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>,
 Dmitry Baryshkov <lumag@...nel.org>, Douglas Anderson
 <dianders@...omium.org>, Abhinav Kumar <quic_abhinavk@...cinc.com>
Cc: ~postmarketos/upstreaming@...ts.sr.ht,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Martin Botka <martin.botka@...ainline.org>, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, Jami Kettunen <jami.kettunen@...ainline.org>
Subject: Re: [PATCH] drm/panel: sony-td4353-jdi: Enable prepare_prev_first

Il 30/11/25 23:40, Marijn Suijten ha scritto:
> The DSI host must be enabled before our prepare function can run, which
> has to send its init sequence over DSI.  Without enabling the host first
> the panel will not probe.
> 
> Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset")
> Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>