intel_dpll_update_active(9)

💅 intel_dpll_update_active(9) 💅

okay so bestie, welcome to the Kernel API Manual corner of the group chat 🫶 this page is literally all about intel_dpll_update_active(9), and it's giving “tiny kernel helper, main character energy” ✨ no cap.

✨ NAME ✨

intel_dpll_update_active — update the active DPLL for a CRTC/encoder 💖

🫶 SYNOPSIS 🫶

void intel_dpll_update_active (struct intel_atomic_state *state , struct
intel_crtc *crtc , struct intel_encoder *encoder );

🌸 ARGUMENTS 🌸

• state — the atomic state. that's the vibe container bestie
• crtc — the CRTC for which to update the active DPLL. slay, very specific
• encoder — encoder determining the type of port DPLL. iykyk

🦋 DESCRIPTION 🦋

Okay so here's the tea ☕: this updates the active DPLL for the given crtc/encoder in crtc's atomic state, pulling from the port DPLLs that were reserved previously by intel_dpll_reserve 💫 periodt. The DPLL selected will be based on the current mode of the encoder's port — that's the whole selection vibe, fr fr. 🔥

🔥 SEE ALSO 🔥

Kernel file ./drivers/gpu/drm/i915/display/intel_dpll_mgr.c is the home base 💅 and here's the whole SEE ALSO friend group, no cap:

• Display PLLs(9)
• intel_get_dpll_by_id(9)
• intel_dpll_enable(9)
• intel_dpll_disable(9)
• intel_dpll_crtc_get(9)
• intel_dpll_crtc_put(9)
• intel_dpll_swap_state(9)
• icl_set_active_port_dpll(9)
• intel_dpll_init(9)
• intel_dpll_compute(9)
• intel_dpll_reserve(9)
• intel_dpll_release(9)
• intel_dpll_get_freq(9)
• intel_dpll_get_hw_state(9)
• intel_dpll_dump_hw_state(9)
• intel_dpll_compare_hw_state(9)

source spot: ./drivers/gpu/drm/i915/display · date: October 2026 · page: intel_dpll_update_active(9) — mwah, that's the tea bestie 🫶💖✨