My current guess would be that the issue I was seeing was already fixed
with dd9e329af723 ("drm/bridge: ti-sn65dsi83: Fix enable/disable flow to
meet spec") and I didn't properly test both changes separately.
My cheap scope is not able to capture the DSI signals and I admit that
we didn't use our more expensive equipment to verify the changes back then.
Instead, we had an automated test setup to do cyclic on/off switching
for the display and check for a black screen using a sensor. It is quite
a hassle to set up and I'm currently not planning to spend that much
effort to verify this change again.
Anyway, I currently don't see any reasons to not revert my changes. Your
revert looks correct and seems to work fine as far as I can tell.
Reviewed-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>