drm/amd/display: Use udelay when waiting between aux retries

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[Why]
"IRQ_HPD Pulse Length Test" DP compliance test
fails. Test complains that certain DPCD registers
are not read within 100 ms.

[How]
msleep is inaccurate for small values. Used udelay
instead for accuracy.

Signed-off-by: John Barberiz <John.Barberiz@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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John Barberiz 2019-01-16 17:21:31 -05:00 • committed by Alex Deucher

parent 1b52f2d567

commit 9ca089925f

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/dce/dce_aux.c

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