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gpu: nvgpu: Add option to enable GPCPLL NA mode

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Added configuration option to enable GM20b GPCPLL noise aware (NA)
mode. In this mode PLL output frequency is automatically adjusted when
GM20b voltage is fluctuating.

NA mode is disabled by default.

Bug 1555318

Change-Id: Ia9741fd02ddacaf4743e5397b729293fa5181f84
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/534079
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
This commit is contained in:
Alex Frid
2014-09-23 21:37:36 -07:00
committed by Dan Willemsen
parent 3a81ed7e97
commit ad39ba2b9e
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/nvgpu/Kconfig
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@@ -79,3 +79,12 @@ config TEGRA_ACR
Enable Support for Loading High Secure binary, and using
Write Protected Regions (WPR) for storing ucodes, and bootstrap
PMU, FECS and GPCCS in Low Secure mode.
config TEGRA_USE_NA_GPCPLL
bool "Enable noise aware mode of GM20B GPCPLL on Tegra"
depends on TEGRA_CLK_FRAMEWORK
default n
help
Enable noise aware (NA) mode of GM20b GPCPLL. In this mode PLL output
frequency is automatically adjusted when GM20b voltage is fluctuating
because of transient PMIC or power distribution tree noise.