From ad39ba2b9e514f99dca588bad799ce63ac8022be Mon Sep 17 00:00:00 2001 From: Alex Frid Date: Tue, 23 Sep 2014 21:37:36 -0700 Subject: gpu: nvgpu: Add option to enable GPCPLL NA mode 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 Reviewed-on: http://git-master/r/534079 Reviewed-by: Yu-Huan Hsu --- drivers/gpu/nvgpu/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/gpu/nvgpu/Kconfig') diff --git a/drivers/gpu/nvgpu/Kconfig b/drivers/gpu/nvgpu/Kconfig index 1ea9e060..88c3130d 100644 --- a/drivers/gpu/nvgpu/Kconfig +++ b/drivers/gpu/nvgpu/Kconfig @@ -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. -- cgit v1.2.2