[v3,5/5] drm/i915: Remove unneeded hack now for CDCLK
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Message ID 20200330122354.24752-6-stanislav.lisovskiy@intel.com
State New
Headers show
Series
  • Consider DBuf bandwidth when calculating CDCLK
Related show

Commit Message

Stanislav Lisovskiy March 30, 2020, 12:23 p.m. UTC
No need to bump up CDCLK now, as it is now correctly
calculated, accounting for DBuf BW as BSpec says.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_cdclk.c | 12 ------------
 1 file changed, 12 deletions(-)

Patch
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diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 036774e7f3ec..13e7ea6f471e 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -2077,18 +2077,6 @@  int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 	/* Account for additional needs from the planes */
 	min_cdclk = max(intel_planes_min_cdclk(crtc_state), min_cdclk);
 
-	/*
-	 * HACK. Currently for TGL platforms we calculate
-	 * min_cdclk initially based on pixel_rate divided
-	 * by 2, accounting for also plane requirements,
-	 * however in some cases the lowest possible CDCLK
-	 * doesn't work and causing the underruns.
-	 * Explicitly stating here that this seems to be currently
-	 * rather a Hack, than final solution.
-	 */
-	if (IS_TIGERLAKE(dev_priv))
-		min_cdclk = max(min_cdclk, (int)crtc_state->pixel_rate);
-
 	/*
 	 * Similar story as with skl_write_plane_wm and intel_enable_sagv
 	 * - in some certain driver parts, we don't have any guarantee that