drm/amd/display: Check UHBR13.5 cap when determining max link cap

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[WHY]
UHBR13.5 support is optional, even if UHBR20 is supported by the device.
If source supports max UHBR13.5 while sink, cable and LTTPR support
UHBR20 but not UHBR13.5, UHBR10 should be used as the max link cap.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Alex Hung <alex.hung@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>

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George Shen 2024-04-23 16:59:43 -04:00 • committed by Alex Deucher

parent c49e44ede5

commit 4eaf110f97

1 changed files with 18 additions and 4 deletions

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drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c

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