drivers/cpufreq/Kconfig.x86

1 # SPDX-License-Identifier: GPL-2.0-only
30 	  <file:Documentation/admin-guide/pm/cpufreq_drivers.rst>.
33 	  module will be called pcc-cpufreq.
38 	bool "AMD Processor P-State driver"
44 	  This driver adds a CPUFreq driver which utilizes a fine grain
50 	  <file:Documentation/admin-guide/pm/amd-pstate.rst>.
55 	int "AMD Processor P-State default mode"
60 	  Select the default mode the amd-pstate driver will use on
63 		1 -> Disabled
64 		2 -> Passive
65 		3 -> Active (EPP)
66 		4 -> Guided
69 	  <file:Documentation/admin-guide/pm/amd-pstate.rst>.
72 	tristate "selftest for AMD Processor P-State driver"
79 	  It can also be built-in without X86_AMD_PSTATE enabled.
80 	  Currently, only tests for amd-pstate are supported. If X86_AMD_PSTATE
81 	  is set disabled, it can tell the users test can only run on amd-pstate
83 	  In the future, comparison tests will be added. It can set amd-pstate
84 	  disabled and set acpi-cpufreq enabled to run test cases, then compare
88 	tristate "ACPI Processor P-States driver"
91 	  This driver adds a CPUFreq driver which utilizes the ACPI
97 	  module will be called acpi-cpufreq.
99 	  For details, take a look at <file:Documentation/cpu-freq/>.
108 	  The powernow-k8 driver used to provide a sysfs knob called "cpb"
119 	  This adds the CPUFreq driver for AMD Elan SC400 and SC410
126 	  For details, take a look at <file:Documentation/cpu-freq/>.
134 	  This adds the CPUFreq driver for AMD Elan SC520 processor.
136 	  For details, take a look at <file:Documentation/cpu-freq/>.
142 	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
145 	  This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
146 	  AMD K6-3+ processors.
148 	  For details, take a look at <file:Documentation/cpu-freq/>.
156 	  This adds the CPUFreq driver for mobile AMD K7 mobile processors.
158 	  For details, take a look at <file:Documentation/cpu-freq/>.
173 	  This adds the CPUFreq driver for K8/early Opteron/Athlon64 processors.
174 	  Support for K10 and newer processors is now in acpi-cpufreq.
177 	  module will be called powernow-k8.
179 	  For details, take a look at <file:Documentation/cpu-freq/>.
185 	  This adds AMD-specific powersave bias function to the ondemand
186 	  governor, which allows it to make more power-conscious frequency
191 	  the CPUs' workloads are. CPU-bound workloads will be more sensitive
192 	  -- they will perform better as frequency increases. Memory/IO-bound
193 	  workloads will be less sensitive -- they will not necessarily perform
202 	 This add the CPUFreq driver for NatSemi Geode processors which
205 	 For details, take a look at <file:Documentation/cpu-freq/>.
217 	  This adds the CPUFreq driver for Enhanced SpeedStep enabled
222 	  module will be called speedstep-centrino.
224 	  For details, take a look at <file:Documentation/cpu-freq/>.
229 	bool "Built-in tables for Banias CPUs"
233 	  Use built-in tables for Banias CPUs if ACPI encoding
239 	tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
242 	  This adds the CPUFreq driver for certain mobile Intel Pentium III
243 	  (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
244 	  mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2,
247 	  For details, take a look at <file:Documentation/cpu-freq/>.
255 	  This adds the CPUFreq driver for certain mobile Intel Pentium III
256 	  (Coppermine), all mobile Intel Pentium III-M (Tualatin)
259 	  For details, take a look at <file:Documentation/cpu-freq/>.
266 	  This adds the CPUFreq driver for Intel Pentium 4 / XEON
276 	  module will be called p4-clockmod.
278 	  For details, take a look at <file:Documentation/cpu-freq/>.
286 	  This adds the CPUFreq driver for FSB changing on nVidia nForce2
289 	  For details, take a look at <file:Documentation/cpu-freq/>.
297 	  This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
300 	  For details, take a look at <file:Documentation/cpu-freq/>.
308 	  This adds the CPUFreq driver for VIA Samuel/CyrixIII,
309 	  VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
312 	  For details, take a look at <file:Documentation/cpu-freq/>.
320 	  This adds the CPUFreq driver for VIA C7 processors.  However, this driver
322 	  and is thus considered dangerous.  Please use the regular ACPI cpufreq
345 	bool "Current frequency derived from HW provided feedback"