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Commit 2fb4719b authored by Lukasz Majewski's avatar Lukasz Majewski Committed by Rafael J. Wysocki
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cpufreq / boost: Kconfig: Support for software-managed BOOST 



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: default avatarLukasz Majewski <l.majewski@samsung.com>
Signed-off-by: default avatarMyungjoo Ham <myungjoo.ham@samsung.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
[rjw: Subject and changelog]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent cfc9c8ed

drivers/cpufreq/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -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

drivers/cpufreq/Kconfig.arm

+15 −0
Original line number Diff line number Diff line
@@ -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