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

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This reverts commit c58da17d13.

With original patch, we request 0 emc for minimum GPU
frequency, and this causes instability on Quill-B00

Hence revert this patch

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

Bug 1864117
Bug 1863013

Change-Id: I45aadba4614286f04b29a5abb7432d03d99ed6c1
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1291512
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-01-20 15:14:19 +05:30
committed by mobile promotions
parent 8613119529
commit 74948b73e3
1 changed files with 1 additions and 8 deletions
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9
drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
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@@ -312,14 +312,7 @@ static void gp10b_tegra_postscale(struct device *pdev,
gk20a_dbg_fn("");
if (profile && !gp10b_tegra_is_railgated(pdev)) {
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;
emc_rate = (freq * EMC_BW_RATIO * g->emc3d_ratio) / 1000;
if (emc_rate > tegra_bwmgr_get_max_emc_rate())
emc_rate = tegra_bwmgr_get_max_emc_rate();