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drm/i915/vrr: Update the intel_vrr_extra_vblank_delay() comment

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The coment in intel_vrr_extra_vblank_delay() is a bit outdated now
that we generally got rid of the "vblank delay" stuff. Update the
comment to better describe the current state of things.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251020185038.4272-22-ville.syrjala@linux.intel.com
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
This commit is contained in:
Ville Syrjälä
2025-10-20 21:50:37 +03:00
parent 0f4f31d79e
commit be5fc552b3
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/i915/display/intel_vrr.c
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@@ -87,10 +87,8 @@ static int intel_vrr_extra_vblank_delay(struct intel_display *display)
/*
* On ICL/TGL VRR hardware inserts one extra scanline
* just after vactive, which pushes the vmin decision
* boundary ahead accordingly. We'll include the extra
* scanline in our vblank delay estimates to make sure
* that we never underestimate how long we have until
* the delayed vblank has passed.
* boundary ahead accordingly, and thus reduces the
* max guardband length by one scanline.
*/
return DISPLAY_VER(display) < 13 ? 1 : 0;
}