intel_dp_stop_link_train(9)

💖 intel_dp_stop_link_train(9) — Kernel API Manual 💖

okay bestie, this is the intel_dp_stop_link_train(9) page, and we're gonna get you comfy with it. no cap, it's shorter than it looks.

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✨ NAME ✨

intel_dp_stop_link_train - stop link training. periodt. that's the whole vibe.

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🎀 SYNOPSIS 🎀

void intel_dp_stop_link_train (struct intel_dp *intel_dp , const struct
       intel_crtc_state *crtc_state );

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🌸 ARGUMENTS 🌸

• intel_dp — the DP struct, aka the little guy this function is working on 🫶
• crtc_state — the state for the CRTC attached to the encoder ✨

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💅 DESCRIPTION 💅

okay so the whole point: this stops the link training of the intel_dp port, disabling the training pattern in the sink's DPCD, and disabling the test pattern symbol generation on the port. it's giving "wrap it up, training era is over" 💀

what symbols are output on the port after this point is platform specific:

• On DDI/VLV/CHV platforms it will be the idle pattern with the pipe being disabled.
• On older platforms it's HW specific if/how an idle pattern is generated, as the pipe is already enabled here for those.

🚨 important bestie: this function must be called after intel_dp_start_link_train. not before, not whenever, after. iykyk.

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🦋 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_start_link_train(9)

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mwah 💋 — source/version: ./drivers/gpu/drm/i915/display, dated October 2026, and yes the page title is still intel_dp_stop_link_train(9). slay 🎀