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PM / devfreq: Introduce driver for NVIDIA Tegra20

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Add devfreq driver for NVIDIA Tegra20 SoC's. The driver periodically
reads out Memory Controller counters and adjusts memory frequency based
on the memory clients activity.

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
[Removed MAINTAINERS updates by MyungJoo so that it can be sent elsewhere.]
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Dmitry Osipenko
2019-05-02 02:38:15 +03:00
committed by MyungJoo Ham
parent 2360175291
commit d196175ed8
3 changed files with 223 additions and 0 deletions
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10
drivers/devfreq/Kconfig
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@@ -104,6 +104,16 @@ config ARM_TEGRA_DEVFREQ
It reads ACTMON counters of memory controllers and adjusts the
operating frequencies and voltages with OPP support.
config ARM_TEGRA20_DEVFREQ
tristate "NVIDIA Tegra20 DEVFREQ Driver"
depends on (TEGRA_MC && TEGRA20_EMC) || COMPILE_TEST
select DEVFREQ_GOV_SIMPLE_ONDEMAND
select PM_OPP
help
This adds the DEVFREQ driver for the Tegra20 family of SoCs.
It reads Memory Controller counters and adjusts the operating
frequencies and voltages with OPP support.
config ARM_RK3399_DMC_DEVFREQ
tristate "ARM RK3399 DMC DEVFREQ Driver"
depends on ARCH_ROCKCHIP