drm/amd/display: Add debug flags for USB4 DP link training.

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[Why & How]
Additional debug flags that can be useful for testing USB4 DP
link training.

Add flags:
- 0x2 : Forces USB4 DP link to non-LTTPR mode
- 0x4 : Extends status read intervals to about 60s.

Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Jimmy Kizito 2021-08-25 21:26:33 -04:00 • committed by Alex Deucher

parent 8cf5ed4a15

commit 6aa8d42c66

4 changed files with 18 additions and 1 deletions

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6

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

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6

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

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4

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

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3

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

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