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"
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"
78 	  It can also be built-in without X86_AMD_PSTATE enabled.
79 	  Currently, only tests for amd-pstate are supported. If X86_AMD_PSTATE
80 	  is set disabled, it can tell the users test can only run on amd-pstate
82 	  In the future, comparison tests will be added. It can set amd-pstate
83 	  disabled and set acpi-cpufreq enabled to run test cases, then compare
87 	tristate "ACPI Processor P-States driver"
96 	  module will be called acpi-cpufreq.
98 	  For details, take a look at <file:Documentation/cpu-freq/>.
107 	  The powernow-k8 driver used to provide a sysfs knob called "cpb"
109 	  file has now been superseded by the more generic "boost" entry.
112 	  entry in addition to the new boost ones, for compatibility reasons.
125 	  For details, take a look at <file:Documentation/cpu-freq/>.
135 	  For details, take a look at <file:Documentation/cpu-freq/>.
141 	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
144 	  This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
145 	  AMD K6-3+ processors.
147 	  For details, take a look at <file:Documentation/cpu-freq/>.
157 	  For details, take a look at <file:Documentation/cpu-freq/>.
173 	  Support for K10 and newer processors is now in acpi-cpufreq.
176 	  module will be called powernow-k8.
178 	  For details, take a look at <file:Documentation/cpu-freq/>.
184 	  This adds AMD-specific powersave bias function to the ondemand
185 	  governor, which allows it to make more power-conscious frequency
190 	  the CPUs' workloads are. CPU-bound workloads will be more sensitive
191 	  -- they will perform better as frequency increases. Memory/IO-bound
192 	  workloads will be less sensitive -- they will not necessarily perform
204 	 For details, take a look at <file:Documentation/cpu-freq/>.
221 	  module will be called speedstep-centrino.
223 	  For details, take a look at <file:Documentation/cpu-freq/>.
228 	bool "Built-in tables for Banias CPUs"
232 	  Use built-in tables for Banias CPUs if ACPI encoding
238 	tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
242 	  (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
243 	  mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2,
246 	  For details, take a look at <file:Documentation/cpu-freq/>.
255 	  (Coppermine), all mobile Intel Pentium III-M (Tualatin)
258 	  For details, take a look at <file:Documentation/cpu-freq/>.
270 	  circumstances when very low power is needed because it causes severe
275 	  module will be called p4-clockmod.
277 	  For details, take a look at <file:Documentation/cpu-freq/>.
288 	  For details, take a look at <file:Documentation/cpu-freq/>.
299 	  For details, take a look at <file:Documentation/cpu-freq/>.
308 	  VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
311 	  For details, take a look at <file:Documentation/cpu-freq/>.