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# CPU Frequency scaling
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menu "CPU Frequency scaling"

config CPU_FREQ
	bool "CPU Frequency scaling"
	help
	  Clock scaling allows you to change the clock speed of CPUs on the
	  fly. This is a nice method to save battery power on notebooks,
	  because the lower the clock speed, the less power the CPU consumes.

	  For more information, take a look at linux/Documentation/cpu-freq or
	  at <http://www.codemonkey.org.uk/projects/cpufreq/>

	  If in doubt, say N.

source "drivers/cpufreq/Kconfig"

config CPU_FREQ_TABLE
       tristate "CPU frequency table helpers"
       depends on CPU_FREQ
       default y
       help
         Many CPUFreq drivers use these helpers, so only say N here if
	 the CPUFreq driver of your choice doesn't need these helpers.

	 If in doubt, say Y.

comment "CPUFreq processor drivers"
       depends on CPU_FREQ

config X86_ACPI_CPUFREQ
	tristate "ACPI Processor P-States driver"
	depends on CPU_FREQ_TABLE && ACPI_PROCESSOR
	help
	  This driver adds a CPUFreq driver which utilizes the ACPI
	  Processor Performance States.

	  For details, take a look at linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_ACPI_CPUFREQ_PROC_INTF
        bool "/proc/acpi/processor/../performance interface (deprecated)"
	depends on X86_ACPI_CPUFREQ && PROC_FS
	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 ELAN_CPUFREQ
	tristate "AMD Elan"
	depends on CPU_FREQ_TABLE && MELAN
	---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 linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_POWERNOW_K6
	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
	depends on 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 linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_POWERNOW_K7
	tristate "AMD Mobile Athlon/Duron PowerNow!"
	depends on CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for mobile AMD K7 mobile processors.

	  For details, take a look at linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_POWERNOW_K8
	tristate "AMD Opteron/Athlon64 PowerNow!"
	depends on CPU_FREQ && EXPERIMENTAL
	help
	  This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.

	  For details, take a look at linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_GX_SUSPMOD
	tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
	depends on CPU_FREQ
	help
	 This add the CPUFreq driver for NatSemi Geode processors which
	 support suspend modulation.

	 For details, take a look at linux/Documentation/cpu-freq.

	 If in doubt, say N.

config X86_SPEEDSTEP_CENTRINO
	tristate "Intel Enhanced SpeedStep"
	depends on CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for Enhanced SpeedStep enabled
	  mobile CPUs.  This means Intel Pentium M (Centrino) CPUs.
	  
	  For details, take a look at linux/Documentation/cpu-freq. 
	  
	  If in doubt, say N.

config X86_SPEEDSTEP_ICH
	tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
	depends on 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 linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_SPEEDSTEP_SMI
	tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
	depends on CPU_FREQ_TABLE && 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 linux/Documentation/cpu-freq.

	  If in doubt, say N.

config X86_SPEEDSTEP_LIB
	tristate
	depends on (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI)
	default (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI)

config X86_P4_CLOCKMOD
	tristate "Intel Pentium 4 clock modulation"
	depends on CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for Intel Pentium 4 / XEON
	  processors.

	  For details, take a look at linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_LONGRUN
	tristate "Transmeta LongRun"
	depends on CPU_FREQ
	help
	  This adds the CPUFreq driver for Transmeta Crusoe processors which
	  support LongRun.

	  For details, take a look at linux/Documentation/cpu-freq. 

	  If in doubt, say N.

config X86_LONGHAUL
	tristate "VIA Cyrix III Longhaul"
	depends on CPU_FREQ_TABLE
	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 linux/Documentation/cpu-freq. 

	  If in doubt, say N.

endmenu