We do not currently output enough information to help debugging DP link training issues. For e.g., training pattern and link status information. This series aims to correct that by adding debug messages that can help developers.
Dhinakaran Pandiyan (4): drm/i915/dp: Add debug messages to print DP link training pattern drm/i915/dp: Switch to using the DRM function for reading DP link status drm/dp: Clarify clock recovery and channel equalization failures drm/i915/dp: Dump DP link status when link training stages fails
drivers/gpu/drm/drm_dp_helper.c | 12 +++++++++--- drivers/gpu/drm/i915/intel_dp.c | 28 ++++++++++----------------- drivers/gpu/drm/i915/intel_dp_link_training.c | 22 ++++++++++++++++++--- drivers/gpu/drm/i915/intel_drv.h | 8 ++++---- 4 files changed, 42 insertions(+), 28 deletions(-)