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[ Upstream commit771d6539f2] The back porch timings were correct, only the sync offset was wrong. Correct timing is now reported for 1080i and 576i, but the h offset is incorrect for 480i for non-obvious reasons. Fixes:fb10dc451c("drm/vc4: hdmi: Correct HDMI timing registers for interlaced modes") Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-hvs-crtc-misc-v1-14-1f8e0770798b@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Sasha Levin <sashal@kernel.org>