gpu: nvgpu: gv11b: enable devfreq

After moving devfreq enable to end of finalize power on,
intermittent issues related to gpu booting with devfreq
enabled are fixed.

Enabled devfreq for gv11b by enabling ""nvhost_podgov"
governor in platform data.

Reused scaling functions from gp10b/gk20a.

Removed emc floor on railgate for power saving.
Added max emc frequency as floor in rail-ungate for
faster gpu boot.

Bug 2049965
Bug 2039013
Bug 200377508

Change-Id: Ia1dec278b663b9f7ed859dd953a60f3eae7ef9a0
Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1644702
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/platform_gp10b.h b/drivers/gpu/nvgpu/gp10b/platform_gp10b.h
index 0791c2fe..d256d126 100644
--- a/drivers/gpu/nvgpu/gp10b/platform_gp10b.h
+++ b/drivers/gpu/nvgpu/gp10b/platform_gp10b.h
@@ -1,7 +1,7 @@
 /*
  * GP10B Platform (SoC) Interface
  *
- * Copyright (c) 2014-2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2018, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -30,5 +30,10 @@ struct device;
 int gp10b_tegra_get_clocks(struct device *dev);
 int gp10b_tegra_reset_assert(struct device *dev);
 int gp10b_tegra_reset_deassert(struct device *dev);
-
+void gp10b_tegra_scale_init(struct device *dev);
+long gp10b_round_clk_rate(struct device *dev, unsigned long rate);
+int gp10b_clk_get_freqs(struct device *dev,
+                        unsigned long **freqs, int *num_freqs);
+void gp10b_tegra_prescale(struct device *dev);
+void gp10b_tegra_postscale(struct device *pdev, unsigned long freq);
 #endif