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drm/vc4: hdmi: Avoid full hdmi audio fifo writes
[ Upstream commit 1c594ee ] We are getting occasional VC4_HD_MAI_CTL_ERRORF in HDMI_MAI_CTL which seem to correspond with audio dropouts. Reduce the threshold where we deassert DREQ to avoid the fifo overfilling Fixes: bb7d785 ("drm/vc4: Add HDMI audio support") Signed-off-by: Dom Cobley <popcornmix@gmail.com> Link: https://lore.kernel.org/r/20220613144800.326124-21-maxime@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Sasha Levin <sashal@kernel.org>
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