drm/amd/display: Improve DisplayPort monitor interop

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[Why]
DC is very fast at link training and stream enablement
which causes issues such as blackscreens for non-compliant
monitors.

[How]
After debugging with scaler vendors we implement the
minimum delays at the necessary locations to ensure
the monitor does not hang.  Delays are generic due to
lack of IEEE OUI information on the failing displays.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Aric Cyr 2020-05-26 13:56:53 -04:00 • committed by Alex Deucher

parent a96562b018

commit eec3303de3

4 changed files with 26 additions and 13 deletions

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4

drivers/gpu/drm/amd/display/dc/core/dc_link.c

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23

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

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1

drivers/gpu/drm/amd/display/dc/dc.h

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11

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

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