[PATCH 0/4] drm/dp: Limit the DPCD probe quirk to the affected monitor

Imre Deak imre.deak at intel.com
Tue Jun 3 12:15:39 UTC 2025


This patchset fixes a known issue where the DPCD probe quirk leads to
link training failures (patch 1) and limits the quirk to the monitor
which requires it, to avoid similar failures in the future.

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>

Imre Deak (4):
  drm/dp: Change AUX DPCD probe address from DPCD_REV to LANE0_1_STATUS
  drm/edid: Add support for quirks visible to DRM core and drivers
  drm/dp: Add an EDID quirk for the DPCD register access probe
  drm/i915/dp: Disable the AUX DPCD probe quirk if it's not required

 drivers/gpu/drm/display/drm_dp_helper.c      | 17 +++++++--
 drivers/gpu/drm/drm_edid.c                   | 36 ++++++++++++++++----
 drivers/gpu/drm/i915/display/intel_dp.c      | 11 ++++--
 drivers/gpu/drm/i915/display/intel_dp_aux.c  |  2 ++
 drivers/gpu/drm/i915/display/intel_hotplug.c | 10 ++++++
 include/drm/display/drm_dp_helper.h          |  6 ++++
 include/drm/drm_connector.h                  |  5 +++
 include/drm/drm_edid.h                       |  6 ++++
 8 files changed, 82 insertions(+), 11 deletions(-)

-- 
2.44.2



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