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Revert "Revert "nvgpu: gp10b:remove EMC floor when GPU Fmin""

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This reverts commit 74948b73e3 ("Revert "nvgpu: 
gp10b: remove EMC floor when GPU Fmin"")

The orginal patch caused instability in GVS and was reverted
for unknown reasons.This reverts the revert.

Revert   patch : http://git-master/r/#/c/1291512/
Original patch : http://git-master/r/#/c/1284572/

Bug 1864117
Bug 1863013

Change-Id: Iaeef74296d0df4bb63d02d567e0d4be63688643a
Signed-off-by: Cyril Raju <craju@nvidia.com>
Reviewed-on: http://git-master/r/1296294
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Cyril Raju
2017-01-30 17:37:05 -08:00
committed by mobile promotions
parent 771445abc8
commit a58dc57282
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
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@@ -312,7 +312,14 @@ static void gp10b_tegra_postscale(struct device *pdev,
gk20a_dbg_fn("");
if (profile && !gp10b_tegra_is_railgated(pdev)) {
emc_rate = (freq * EMC_BW_RATIO * g->emc3d_ratio) / 1000;
unsigned long emc_scale;
if (freq <= gp10b_freq_table[0])
emc_scale = 0;
else
emc_scale = g->emc3d_ratio;
emc_rate = (freq * EMC_BW_RATIO * emc_scale) / 1000;
if (emc_rate > tegra_bwmgr_get_max_emc_rate())
emc_rate = tegra_bwmgr_get_max_emc_rate();