| # | |
| # CPU Frequency scaling | |
| # | |
| menu "CPU Frequency scaling" | |
| source "drivers/cpufreq/Kconfig" | |
| if CPU_FREQ | |
| comment "CPUFreq processor drivers" | |
| config X86_ACPI_CPUFREQ | |
| tristate "ACPI Processor P-States driver" | |
| select CPU_FREQ_TABLE | |
| 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. | |
| config ELAN_CPUFREQ | |
| tristate "AMD Elan SC400 and SC410" | |
| select CPU_FREQ_TABLE | |
| depends on X86_ELAN | |
| ---help--- | |
| This adds the CPUFreq driver for AMD Elan SC400 and SC410 | |
| processors. | |
| You need to specify the processor maximum speed as boot | |
| parameter: elanfreq=maxspeed (in kHz) or as module | |
| parameter "max_freq". | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config SC520_CPUFREQ | |
| tristate "AMD Elan SC520" | |
| select CPU_FREQ_TABLE | |
| depends on X86_ELAN | |
| ---help--- | |
| This adds the CPUFreq driver for AMD Elan SC520 processor. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_POWERNOW_K6 | |
| tristate "AMD Mobile K6-2/K6-3 PowerNow!" | |
| select CPU_FREQ_TABLE | |
| help | |
| This adds the CPUFreq driver for mobile AMD K6-2+ and mobile | |
| AMD K6-3+ processors. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_POWERNOW_K7 | |
| tristate "AMD Mobile Athlon/Duron PowerNow!" | |
| select CPU_FREQ_TABLE | |
| help | |
| This adds the CPUFreq driver for mobile AMD K7 mobile processors. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_POWERNOW_K7_ACPI | |
| bool | |
| depends on X86_POWERNOW_K7 && ACPI_PROCESSOR | |
| depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m) | |
| default y | |
| config X86_POWERNOW_K8 | |
| tristate "AMD Opteron/Athlon64 PowerNow!" | |
| select CPU_FREQ_TABLE | |
| depends on EXPERIMENTAL | |
| help | |
| This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_POWERNOW_K8_ACPI | |
| bool | |
| depends on X86_POWERNOW_K8 && ACPI_PROCESSOR | |
| depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m) | |
| default y | |
| config X86_GX_SUSPMOD | |
| tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation" | |
| help | |
| This add the CPUFreq driver for NatSemi Geode processors which | |
| support suspend modulation. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_SPEEDSTEP_CENTRINO | |
| tristate "Intel Enhanced SpeedStep" | |
| select CPU_FREQ_TABLE | |
| select X86_SPEEDSTEP_CENTRINO_TABLE if (!X86_SPEEDSTEP_CENTRINO_ACPI) | |
| help | |
| This adds the CPUFreq driver for Enhanced SpeedStep enabled | |
| mobile CPUs. This means Intel Pentium M (Centrino) CPUs. However, | |
| you also need to say Y to "Use ACPI tables to decode..." below | |
| [which might imply enabling ACPI] if you want to use this driver | |
| on non-Banias CPUs. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_SPEEDSTEP_CENTRINO_ACPI | |
| bool "Use ACPI tables to decode valid frequency/voltage pairs" | |
| depends on X86_SPEEDSTEP_CENTRINO && ACPI_PROCESSOR | |
| depends on !(X86_SPEEDSTEP_CENTRINO = y && ACPI_PROCESSOR = m) | |
| default y | |
| help | |
| Use primarily the information provided in the BIOS ACPI tables | |
| to determine valid CPU frequency and voltage pairings. It is | |
| required for the driver to work on non-Banias CPUs. | |
| If in doubt, say Y. | |
| config X86_SPEEDSTEP_CENTRINO_TABLE | |
| bool "Built-in tables for Banias CPUs" | |
| depends on X86_SPEEDSTEP_CENTRINO | |
| default y | |
| help | |
| Use built-in tables for Banias CPUs if ACPI encoding | |
| is not available. | |
| If in doubt, say N. | |
| config X86_SPEEDSTEP_ICH | |
| tristate "Intel Speedstep on ICH-M chipsets (ioport interface)" | |
| select CPU_FREQ_TABLE | |
| help | |
| This adds the CPUFreq driver for certain mobile Intel Pentium III | |
| (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all | |
| mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2, | |
| ICH3 or ICH4 southbridge. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_SPEEDSTEP_SMI | |
| tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)" | |
| select CPU_FREQ_TABLE | |
| depends on EXPERIMENTAL | |
| help | |
| This adds the CPUFreq driver for certain mobile Intel Pentium III | |
| (Coppermine), all mobile Intel Pentium III-M (Tualatin) | |
| on systems which have an Intel 440BX/ZX/MX southbridge. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_P4_CLOCKMOD | |
| tristate "Intel Pentium 4 clock modulation" | |
| select CPU_FREQ_TABLE | |
| help | |
| This adds the CPUFreq driver for Intel Pentium 4 / XEON | |
| processors. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_CPUFREQ_NFORCE2 | |
| tristate "nVidia nForce2 FSB changing" | |
| depends on EXPERIMENTAL | |
| help | |
| This adds the CPUFreq driver for FSB changing on nVidia nForce2 | |
| platforms. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_LONGRUN | |
| tristate "Transmeta LongRun" | |
| help | |
| This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors | |
| which support LongRun. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| config X86_LONGHAUL | |
| tristate "VIA Cyrix III Longhaul" | |
| select CPU_FREQ_TABLE | |
| depends on BROKEN | |
| help | |
| This adds the CPUFreq driver for VIA Samuel/CyrixIII, | |
| VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T | |
| processors. | |
| For details, take a look at <file:Documentation/cpu-freq/>. | |
| If in doubt, say N. | |
| comment "shared options" | |
| config X86_ACPI_CPUFREQ_PROC_INTF | |
| bool "/proc/acpi/processor/../performance interface (deprecated)" | |
| depends on PROC_FS | |
| depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K7_ACPI || X86_POWERNOW_K8_ACPI | |
| help | |
| This enables the deprecated /proc/acpi/processor/../performance | |
| interface. While it is helpful for debugging, the generic, | |
| cross-architecture cpufreq interfaces should be used. | |
| If in doubt, say N. | |
| config X86_SPEEDSTEP_LIB | |
| tristate | |
| default X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD | |
| config X86_SPEEDSTEP_RELAXED_CAP_CHECK | |
| bool "Relaxed speedstep capability checks" | |
| depends on (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH) | |
| help | |
| Don't perform all checks for a speedstep capable system which would | |
| normally be done. Some ancient or strange systems, though speedstep | |
| capable, don't always indicate that they are speedstep capable. This | |
| option lets the probing code bypass some of those checks if the | |
| parameter "relaxed_check=1" is passed to the module. | |
| endif # CPU_FREQ | |
| endmenu |