86acd49aa1
This is driver for Enhanced Powersaver which is present in VIA C7 processors. Beta tested by Jorgen (jorgen (at) greven dot dk). Thanks! Based on documentation provided by Dave Jones (Thanks!) and C7 Eden datasheet available from www.via.com.tw. Looks like all these C7 Eden CPU's don't have P-states in BIOS. I know that 2 p-states is low, but Jorgen finds it usefull anyway because board is passive cooled. There are 3 different types of C7 processors (called brands): 0. C7-M - these processors can set any maultiplier between min and max, any voltage between min and max. 1. C7 - only min and max states are supported. Voltage is different for min and max states. 2. Eden - only min and max states are supported. Looks like this brand can only change multiplier. Voltage seems to be the same for min and max frequency. Signed-off-by: Rafal Bilski <rafalbilski@interia.pl> Signed-off-by: Dave Jones <davej@redhat.com>
258 lines
7 KiB
Text
258 lines
7 KiB
Text
#
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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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This driver also supports Intel Enhanced Speedstep.
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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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depends on PCI
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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 (deprecated)"
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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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This is deprecated and this functionality is now merged into
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acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
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speedstep_centrino.
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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 ACPI_PROCESSOR
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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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config X86_E_POWERSAVER
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tristate "VIA C7 Enhanced PowerSaver (EXPERIMENTAL)"
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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 VIA C7 processors.
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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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