drm/amd/display: Improve robustness of FIXED_VS link training at DP1 rates

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[WHY]
New sequence for transparent mode DP1.x link training was provided by LTTPR
vendor

[HOW]
Implement new FIXED_VS sequence, increase LT retry count to minimize
any potential intermittent lightup failures

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Michael Strauss 2023-03-24 10:48:37 -04:00 • committed by Alex Deucher

parent 554836cc24

commit 7727e7b60f

6 changed files with 396 additions and 3 deletions

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1

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

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2

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c

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8

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

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5

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c

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378

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.c

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5

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training_fixed_vs_pe_retimer.h

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