drm/amd/display: Reset PHY in link re-training

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[Why]
Link training failed randomly when plugging USB-C display in/out.

[How]
If link training failed, reset PHY in link re-training.

Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Paul Hsieh 2019-11-01 14:41:37 +08:00 • committed by Alex Deucher

parent a4cea11655

commit 832aa63bef

4 changed files with 66 additions and 53 deletions

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32

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

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68

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

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14

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

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5

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

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