optc1_program_timing(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie 💖 this is optc1_program_timing(9) from the Kernel API Manual, and it is lowkey iconic kernel lore. Buckle up 🎀

🌸 NAME 🌸

optc1_program_timing — used by mode timing set to Program CRTC Timing Registers — OTG_H_*, OTG_V_* — plus Pixel repetition. Including SYNC. It calls the BIOS command table to program Timings. No cap, that's the whole vibe ✨

✨ SYNOPSIS ✨

void optc1_program_timing (struct timing_generator *optc , const struct
dc_crtc_timing *dc_crtc_timing , int vready_offset , int vstartup_start
, int vupdate_offset , int vupdate_width , int pstate_keepout , const
enum signal_type signal , bool use_vbios );

💅 ARGUMENTS 💅

  • optc — the timing_generator instance, aka the main character 🫶
  • dc_crtc_timing — Timing parameters used to configure DCN blocks. slay 💫
  • vready_offset — Vready's starting position. periodt.
  • vstartup_start — Vstartup period. okay bestie, noted 🌸
  • vupdate_offset — Vupdate starting position. iconic.
  • vupdate_width — Vupdate duration. it's giving precision 💅
  • pstate_keepout — determines low power mode timing during refresh. lowkey important 🔥
  • signal — DC signal types. yes bestie, those ones 💖
  • use_vbios — to program timings from BIOS command table. fr fr 📋

🦋 SEE ALSO 🦋

Kernel file: ./drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.c

That's the whole page, bestie 🫶 source/version is ./drivers/gpu/drm/amd/display/..., the date is October 2026, and it's all for optc1_program_timing(9) 💜✨

📦 where this page comes from