drm/amd/display: block passive dongle EDID Emulation for USB-C ports

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[Why]
Emulating passive dongle on USB-C port causes issue on some asics.

[How]
Check for DP_IS_USB_C flag in bios parser and propagate it to
encoder features flags. If DP_IS_USB_C flag is set and it is trying to
emulate passive dongle, then return fail.

Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Samson Tam 2019-04-12 18:23:11 -04:00 • committed by Alex Deucher

parent 040a4d63bd

commit 796c9ece2e

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dcn20/dcn20_link_encoder.c

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