diff options
Diffstat (limited to 'drivers/cpufreq/Kconfig')
| -rw-r--r-- | drivers/cpufreq/Kconfig | 231 |
1 files changed, 194 insertions, 37 deletions
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 2cc71b66231..ffe350f86bc 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -1,3 +1,5 @@ +menu "CPU Frequency scaling" + config CPU_FREQ bool "CPU Frequency scaling" help @@ -15,44 +17,37 @@ config CPU_FREQ if CPU_FREQ -config CPU_FREQ_TABLE - def_tristate m +config CPU_FREQ_GOV_COMMON + bool + +config CPU_FREQ_BOOST_SW + bool + depends on THERMAL -config CPU_FREQ_DEBUG - bool "Enable CPUfreq debugging" +config CPU_FREQ_STAT + tristate "CPU frequency translation statistics" + default y help - Say Y here to enable CPUfreq subsystem (including drivers) - debugging. You will need to activate it via the kernel - command line by passing - cpufreq.debug=<value> + This driver exports CPU frequency statistics information through sysfs + file system. - To get <value>, add - 1 to activate CPUfreq core debugging, - 2 to activate CPUfreq drivers debugging, and - 4 to activate CPUfreq governor debugging + To compile this driver as a module, choose M here: the + module will be called cpufreq_stats. -config CPU_FREQ_STAT - tristate "CPU frequency translation statistics" - select CPU_FREQ_TABLE - default y - help - This driver exports CPU frequency statistics information through sysfs - file system + If in doubt, say N. config CPU_FREQ_STAT_DETAILS - bool "CPU frequency translation statistics details" - depends on CPU_FREQ_STAT - help - This will show detail CPU frequency translation table in sysfs file - system + bool "CPU frequency translation statistics details" + depends on CPU_FREQ_STAT + help + This will show detail CPU frequency translation table in sysfs file + system. -# Note that it is not currently possible to set the other governors (such as ondemand) -# as the default, since if they fail to initialise, cpufreq will be -# left in an undefined state. + If in doubt, say N. choice prompt "Default CPUFreq governor" - default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110 + default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ default CPU_FREQ_DEFAULT_GOV_PERFORMANCE help This option sets which CPUFreq governor shall be loaded at @@ -66,47 +61,89 @@ config CPU_FREQ_DEFAULT_GOV_PERFORMANCE the frequency statically to the highest frequency supported by the CPU. +config CPU_FREQ_DEFAULT_GOV_POWERSAVE + bool "powersave" + depends on EXPERT + select CPU_FREQ_GOV_POWERSAVE + help + Use the CPUFreq governor 'powersave' as default. This sets + the frequency statically to the lowest frequency supported by + the CPU. + config CPU_FREQ_DEFAULT_GOV_USERSPACE bool "userspace" select CPU_FREQ_GOV_USERSPACE help Use the CPUFreq governor 'userspace' as default. This allows - you to set the CPU frequency manually or when an userspace + you to set the CPU frequency manually or when a userspace program shall be able to set the CPU dynamically without having to enable the userspace governor manually. +config CPU_FREQ_DEFAULT_GOV_ONDEMAND + bool "ondemand" + select CPU_FREQ_GOV_ONDEMAND + select CPU_FREQ_GOV_PERFORMANCE + help + Use the CPUFreq governor 'ondemand' as default. This allows + you to get a full dynamic frequency capable system by simply + loading your cpufreq low-level hardware driver. + Be aware that not all cpufreq drivers support the ondemand + governor. If unsure have a look at the help section of the + driver. Fallback governor will be the performance governor. + +config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE + bool "conservative" + select CPU_FREQ_GOV_CONSERVATIVE + select CPU_FREQ_GOV_PERFORMANCE + help + Use the CPUFreq governor 'conservative' as default. This allows + you to get a full dynamic frequency capable system by simply + loading your cpufreq low-level hardware driver. + Be aware that not all cpufreq drivers support the conservative + governor. If unsure have a look at the help section of the + driver. Fallback governor will be the performance governor. endchoice config CPU_FREQ_GOV_PERFORMANCE - tristate "'performance' governor" - help + tristate "'performance' governor" + help This cpufreq governor sets the frequency statically to the highest available CPU frequency. + To compile this driver as a module, choose M here: the + module will be called cpufreq_performance. + If in doubt, say Y. config CPU_FREQ_GOV_POWERSAVE - tristate "'powersave' governor" - help + tristate "'powersave' governor" + help This cpufreq governor sets the frequency statically to the lowest available CPU frequency. + To compile this driver as a module, choose M here: the + module will be called cpufreq_powersave. + If in doubt, say Y. config CPU_FREQ_GOV_USERSPACE - tristate "'userspace' governor for userspace frequency scaling" - help + tristate "'userspace' governor for userspace frequency scaling" + help Enable this cpufreq governor when you either want to set the - CPU frequency manually or when an userspace program shall + CPU frequency manually or when a userspace program shall be able to set the CPU dynamically, like on LART <http://www.lartmaker.nl/>. + To compile this driver as a module, choose M here: the + module will be called cpufreq_userspace. + For details, take a look at <file:Documentation/cpu-freq/>. If in doubt, say Y. config CPU_FREQ_GOV_ONDEMAND tristate "'ondemand' cpufreq policy governor" + select CPU_FREQ_GOV_COMMON help 'ondemand' - This driver adds a dynamic cpufreq policy governor. The governor does a periodic polling and @@ -115,6 +152,9 @@ config CPU_FREQ_GOV_ONDEMAND do fast frequency switching (i.e, very low latency frequency transitions). + To compile this driver as a module, choose M here: the + module will be called cpufreq_ondemand. + For details, take a look at linux/Documentation/cpu-freq. If in doubt, say N. @@ -122,6 +162,7 @@ config CPU_FREQ_GOV_ONDEMAND config CPU_FREQ_GOV_CONSERVATIVE tristate "'conservative' cpufreq governor" depends on CPU_FREQ + select CPU_FREQ_GOV_COMMON help 'conservative' - this driver is rather similar to the 'ondemand' governor both in its source code and its purpose, the difference is @@ -135,8 +176,124 @@ config CPU_FREQ_GOV_CONSERVATIVE step-by-step latency issues between the minimum and maximum frequency transitions in the CPU) you will probably want to use this governor. + To compile this driver as a module, choose M here: the + module will be called cpufreq_conservative. + For details, take a look at linux/Documentation/cpu-freq. If in doubt, say N. -endif # CPU_FREQ +config GENERIC_CPUFREQ_CPU0 + tristate "Generic CPU0 cpufreq driver" + depends on HAVE_CLK && OF + # if CPU_THERMAL is on and THERMAL=m, CPU0 cannot be =y: + depends on !CPU_THERMAL || THERMAL + select PM_OPP + help + This adds a generic cpufreq driver for CPU0 frequency management. + It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) + systems which share clock and voltage across all CPUs. + + If in doubt, say N. + +menu "x86 CPU frequency scaling drivers" +depends on X86 +source "drivers/cpufreq/Kconfig.x86" +endmenu + +menu "ARM CPU frequency scaling drivers" +depends on ARM || ARM64 +source "drivers/cpufreq/Kconfig.arm" +endmenu + +menu "AVR32 CPU frequency scaling drivers" +depends on AVR32 + +config AVR32_AT32AP_CPUFREQ + bool "CPU frequency driver for AT32AP" + depends on PLATFORM_AT32AP + default n + help + This enables the CPU frequency driver for AT32AP processors. + If in doubt, say N. + +endmenu + +menu "CPUFreq processor drivers" +depends on IA64 + +config IA64_ACPI_CPUFREQ + tristate "ACPI Processor P-States driver" + depends on ACPI_PROCESSOR + help + This driver adds a CPUFreq driver which utilizes the ACPI + Processor Performance States. + + For details, take a look at <file:Documentation/cpu-freq/>. + + If in doubt, say N. + +endmenu + +menu "MIPS CPUFreq processor drivers" +depends on MIPS + +config LOONGSON2_CPUFREQ + tristate "Loongson2 CPUFreq Driver" + help + This option adds a CPUFreq driver for loongson processors which + support software configurable cpu frequency. + + Loongson2F and it's successors support this feature. + + For details, take a look at <file:Documentation/cpu-freq/>. + + If in doubt, say N. + +endmenu + +menu "PowerPC CPU frequency scaling drivers" +depends on PPC32 || PPC64 +source "drivers/cpufreq/Kconfig.powerpc" +endmenu + +menu "SPARC CPU frequency scaling drivers" +depends on SPARC64 +config SPARC_US3_CPUFREQ + tristate "UltraSPARC-III CPU Frequency driver" + help + This adds the CPUFreq driver for UltraSPARC-III processors. + + For details, take a look at <file:Documentation/cpu-freq>. + + If in doubt, say N. + +config SPARC_US2E_CPUFREQ + tristate "UltraSPARC-IIe CPU Frequency driver" + help + This adds the CPUFreq driver for UltraSPARC-IIe processors. + + For details, take a look at <file:Documentation/cpu-freq>. + + If in doubt, say N. +endmenu + +menu "SH CPU Frequency scaling" +depends on SUPERH +config SH_CPU_FREQ + tristate "SuperH CPU Frequency driver" + help + This adds the cpufreq driver for SuperH. Any CPU that supports + clock rate rounding through the clock framework can use this + driver. While it will make the kernel slightly larger, this is + harmless for CPUs that don't support rate rounding. The driver + will also generate a notice in the boot log before disabling + itself if the CPU in question is not capable of rate rounding. + + For details, take a look at <file:Documentation/cpu-freq>. + + If unsure, say N. +endmenu + +endif +endmenu |