drm/amd/display: Add vendor specific LTTPR workarounds for DCN31

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[Why]
Certain LTTPR require special workarounds in order to comply
with DP specifications.

[How]
Implement vendor specific sequences via DPCD writes to
vendor-specific LTTPR registers.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: George Shen <George.Shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

George Shen 2021-11-17 20:49:50 -05:00 • committed by Alex Deucher

parent 7238b42e1f

commit c11099b0d1

4 changed files with 198 additions and 3 deletions

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196

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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3

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

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1

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

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