diff options
| author | Lukasz Majewski <l.majewski@samsung.com> | 2013-12-20 15:24:51 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-17 02:00:45 +0100 |
| commit | 2fb4719b25602a03fb6c7da77d029db03103663d (patch) | |
| tree | a86007243b613f4cbd8caef85145224af923b369 /drivers/cpufreq | |
| parent | cfc9c8ed03e4d908f2388af8815f44c87b503aaf (diff) | |
| download | linux-2fb4719b25602a03fb6c7da77d029db03103663d.tar.gz | |
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: 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>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/cpufreq/Kconfig.arm | 15 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 386dbc9ccdfd..d100926aca0a 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -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 diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 0468ad147301..31297499a60a 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -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 |