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cpufreq / boost: Kconfig: Support for software-managed BOOST

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Add CONFIG_CPU_FREQ_BOOST_SW Kconfig option such that software-managed
boost is enabled only after selecting "EXYNOS Frequency Overclocking -
Software".  It also depends on the thermal subsystem to be compiled in,
which is necessary for disabling boost and cooling down the device when
overheating is detected.

Software-managed boost _MUST_ _NOT_ be enabled without thermal subsystem
with properly defined overheating temperature thresholds.

This option doesn't affect the x86's hardware-driven boost support
in the acpi-cpufreq driver.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lukasz Majewski 2013-12-20 15:24:51 +01:00 committed by Rafael J. Wysocki
parent cfc9c8ed03
commit 2fb4719b25
2 changed files with 19 additions and 0 deletions
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4
drivers/cpufreq/Kconfig
View File

@ -20,6 +20,10 @@ if CPU_FREQ
config CPU_FREQ_GOV_COMMON
bool
config CPU_FREQ_BOOST_SW
bool
depends on THERMAL
config CPU_FREQ_STAT
tristate "CPU frequency translation statistics"
default y

15
drivers/cpufreq/Kconfig.arm
View File

@ -66,6 +66,21 @@ config ARM_EXYNOS5440_CPUFREQ
If in doubt, say N.
config ARM_EXYNOS_CPU_FREQ_BOOST_SW
bool "EXYNOS Frequency Overclocking - Software"
depends on ARM_EXYNOS_CPUFREQ
select CPU_FREQ_BOOST_SW
select EXYNOS_THERMAL
help
This driver supports software managed overclocking (BOOST).
It allows usage of special frequencies for Samsung Exynos
processors if thermal conditions are appropriate.
It reguires, for safe operation, thermal framework with properly
defined trip points.
If in doubt, say N.
config ARM_HIGHBANK_CPUFREQ
tristate "Calxeda Highbank-based"
depends on ARCH_HIGHBANK