drm/amd/display: Add workaround flag for EDID read on certain docks

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[Why]
Certain docks appear to NAK I2C writes to the segment pointer with the
MOT (middle of transaction) bit clear. This behaviour can cause EDID
reads from higher segments to fail.

[How]
Add workaround flag for links which connect to docks exhibiting this
issue.

Cc: Wayne Lin <wayne.lin@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@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 2021-09-14 11:37:04 -04:00 • committed by Alex Deucher

parent 3137f792c5

commit 4b169ca367

2 changed files with 4 additions and 0 deletions

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3

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

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1

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

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