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