Symbol: CVT_RB_MIN_VBLANK
drivers/gpu/drm/drm_modes.c
783
CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate;
drivers/gpu/drm/drm_modes.c
787
vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1;