From 42b65c31563d0e249dcd0cbb988abe9660bb03c8 Mon Sep 17 00:00:00 2001
From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Date: Tue, 19 May 2020 16:11:17 +0300
Subject: drm/i915: Remove unneeded hack now for CDCLK
Git-commit: 82ea174dc5425d4e85e25d0c4ba961a2e494392a
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
No need to bump up CDCLK now, as it is now correctly
calculated, accounting for DBuf BW as BSpec says.
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200519131117.17190-8-stanislav.lisovskiy@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_cdclk.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 4c38d20db9c3..dda9bae02a86 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -2070,18 +2070,6 @@ 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);
-
if (min_cdclk > dev_priv->max_cdclk_freq) {
drm_dbg_kms(&dev_priv->drm,
"required cdclk (%d kHz) exceeds max (%d kHz)\n",
--
2.29.2