drm/amd/display: blank dp stream before re-train the link

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[Why]
When link loss happened, monitor can not light up if only re-train the
link.

[How]
Blank all the DP streams on this link before re-train the link, and then
unblank the stream

Signed-off-by: Xiaodong Yan <Xiaodong.Yan@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Xiaodong Yan 2020-04-09 17:37:40 +08:00 • committed by Alex Deucher

parent 967727021e

commit 422d9091f7

1 changed files with 12 additions and 0 deletions

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

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