drm/amdgpu: Add sysfs API for UALink station configuration

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<device>/ualink/stations: Directory for staging UALink station/port
configuration attributes:
- station_flags (currently only sets the number of port per station)
- lane_en_bitmap (hexadecimal bitmaps of lanes enabled per station)
- write "true" to commit to apply settings

Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Felix Kuehling 2026-04-07 15:50:57 -04:00 • committed by Alex Deucher

parent 0d529e779f

commit 6d10025fce

2 changed files with 169 additions and 1 deletions

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156

drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c

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16

drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h

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