intel_dp_start_link_train(9)

💖 intel_dp_start_link_train(9) 💖

okay so bestie, welcome to the Kernel API Manual — this page is all about intel_dp_start_link_train, and it's giving “kick off the link training” energy. let's get into it ✨

🌸 NAME 🌸

intel_dp_start_link_train — start link training. that's it, that's the job 💅

✨ SYNOPSIS ✨

void intel_dp_start_link_train (struct intel_atomic_state *state ,
       struct intel_dp *intel_dp , const struct intel_crtc_state *crtc_state );

🎀 ARGUMENTS 🎀

• state — the atomic state, periodt. ✨
• intel_dp — the DP struct, aka the main character of this function. 💅
• crtc_state — the state for the CRTC attached to the encoder, iykyk. 🦋

🔥 DESCRIPTION 🔥

Kick off link training on the intel_dp port. no cap, that's the whole move. If the link training fails, it schedules a fallback retraining with reduced link rate/lane parameters — like a little glow-down retry plan. 😭

After calling this function, intel_dp_stop_link_train must be called. not optional, bestie — mandatory. 🫶

🦋 SEE ALSO 🦋

• Kernel file: ./drivers/gpu/drm/i915/display/intel_dp_link_training.c
• DisplayPort link training(9)
• intel_dp_init_lttpr_and_dprx_caps(9)
• link_recovery_reset(9)
• intel_dp_stop_link_train(9)

source/version: ./drivers/gpu/drm/i915/display • October 2026 • intel_dp_start_link_train(9) — mwah, bye bestie 💜