97 lines
2.3 KiB
Text
97 lines
2.3 KiB
Text
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#
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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_POWERNOW_K8
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tristate "AMD Opteron/Athlon64 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 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_SPEEDSTEP_CENTRINO
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tristate "Intel Enhanced SpeedStep"
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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 adds the CPUFreq driver for Enhanced SpeedStep enabled
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mobile CPUs. This means Intel Pentium M (Centrino) CPUs
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or 64bit enabled Intel Xeons.
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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
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depends on X86_SPEEDSTEP_CENTRINO
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default y
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config X86_ACPI_CPUFREQ
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tristate "ACPI Processor P-States driver"
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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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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_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_P4_CLOCKMOD
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tristate "Intel Pentium 4 clock modulation"
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depends on EMBEDDED
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help
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This adds the clock modulation driver for Intel Pentium 4 / XEON
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processors. When enabled it will lower CPU temperature by skipping
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clocks.
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This driver should be only used in exceptional
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circumstances when very low power is needed because it causes severe
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slowdowns and noticeable latencies. Normally Speedstep should be used
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instead.
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For details, take a look at <file:Documentation/cpu-freq/>.
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Unless you are absolutely sure say N.
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config X86_SPEEDSTEP_LIB
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tristate
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default X86_P4_CLOCKMOD
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endif
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endmenu
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