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@xxxxxxxxxx> > 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