[mirror_ubuntu-jammy-kernel.git] / drivers / cpufreq / Kconfig.x86

#
# x86 CPU Frequency scaling drivers
#

config X86_PCC_CPUFREQ
	tristate "Processor Clocking Control interface driver"
	depends on ACPI && ACPI_PROCESSOR
	help
	  This driver adds support for the PCC interface.

	  For details, take a look at:
	  <file:Documentation/cpu-freq/pcc-cpufreq.txt>.

	  To compile this driver as a module, choose M here: the
	  module will be called pcc-cpufreq.

	  If in doubt, say N.

config X86_ACPI_CPUFREQ
	tristate "ACPI Processor P-States driver"
	select CPU_FREQ_TABLE
	depends on ACPI_PROCESSOR
	help
	  This driver adds a CPUFreq driver which utilizes the ACPI
	  Processor Performance States.
	  This driver also supports Intel Enhanced Speedstep and newer
	  AMD CPUs.

	  To compile this driver as a module, choose M here: the
	  module will be called acpi-cpufreq.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config ELAN_CPUFREQ
	tristate "AMD Elan SC400 and SC410"
	select CPU_FREQ_TABLE
	depends on 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 <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config SC520_CPUFREQ
	tristate "AMD Elan SC520"
	select CPU_FREQ_TABLE
	depends on MELAN
	---help---
	  This adds the CPUFreq driver for AMD Elan SC520 processor.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.


config X86_POWERNOW_K6
	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
	select CPU_FREQ_TABLE
	depends on X86_32
	help
	  This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
	  AMD K6-3+ processors.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_POWERNOW_K7
	tristate "AMD Mobile Athlon/Duron PowerNow!"
	select CPU_FREQ_TABLE
	depends on X86_32
	help
	  This adds the CPUFreq driver for mobile AMD K7 mobile processors.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_POWERNOW_K7_ACPI
	bool
	depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
	depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
	depends on X86_32
	default y

config X86_POWERNOW_K8
	tristate "AMD Opteron/Athlon64 PowerNow!"
	select CPU_FREQ_TABLE
	depends on ACPI && ACPI_PROCESSOR
	help
	  This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors.

	  To compile this driver as a module, choose M here: the
	  module will be called powernow-k8.

	  For details, take a look at <file:Documentation/cpu-freq/>.

config X86_GX_SUSPMOD
	tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
	depends on X86_32 && PCI
	help
	 This add the CPUFreq driver for NatSemi Geode processors which
	 support suspend modulation.

	 For details, take a look at <file:Documentation/cpu-freq/>.

	 If in doubt, say N.

config X86_SPEEDSTEP_CENTRINO
	tristate "Intel Enhanced SpeedStep (deprecated)"
	select CPU_FREQ_TABLE
	select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
	depends on X86_32 || (X86_64 && ACPI_PROCESSOR)
	help
	  This is deprecated and this functionality is now merged into
	  acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
	  speedstep_centrino.
	  This adds the CPUFreq driver for Enhanced SpeedStep enabled
	  mobile CPUs.  This means Intel Pentium M (Centrino) CPUs
	  or 64bit enabled Intel Xeons.

	  To compile this driver as a module, choose M here: the
	  module will be called speedstep-centrino.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_SPEEDSTEP_CENTRINO_TABLE
	bool "Built-in tables for Banias CPUs"
	depends on X86_32 && X86_SPEEDSTEP_CENTRINO
	default y
	help
	  Use built-in tables for Banias CPUs if ACPI encoding
	  is not available.

	  If in doubt, say N.

config X86_SPEEDSTEP_ICH
	tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
	select CPU_FREQ_TABLE
	depends on X86_32
	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 <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_SPEEDSTEP_SMI
	tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
	select CPU_FREQ_TABLE
	depends on X86_32 && 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 <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_P4_CLOCKMOD
	tristate "Intel Pentium 4 clock modulation"
	select CPU_FREQ_TABLE
	help
	  This adds the CPUFreq driver for Intel Pentium 4 / XEON
	  processors.  When enabled it will lower CPU temperature by skipping
	  clocks.

	  This driver should be only used in exceptional
	  circumstances when very low power is needed because it causes severe
	  slowdowns and noticeable latencies.  Normally Speedstep should be used
	  instead.

	  To compile this driver as a module, choose M here: the
	  module will be called p4-clockmod.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  Unless you are absolutely sure say N.

config X86_CPUFREQ_NFORCE2
	tristate "nVidia nForce2 FSB changing"
	depends on X86_32 && EXPERIMENTAL
	help
	  This adds the CPUFreq driver for FSB changing on nVidia nForce2
	  platforms.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_LONGRUN
	tristate "Transmeta LongRun"
	depends on X86_32
	help
	  This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
	  which support LongRun.

	  For details, take a look at <file:Documentation/cpu-freq/>.

	  If in doubt, say N.

config X86_LONGHAUL
	tristate "VIA Cyrix III Longhaul"
	select CPU_FREQ_TABLE
	depends on X86_32 && ACPI_PROCESSOR
	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 <file:Documentation/cpu-freq/>.

	  If in doubt, say N.
Commit	Line	Data
1da177e4	1	#
bb0a56ec	2	# x86 CPU Frequency scaling drivers
1da177e4 LT	3	#
1da177e4 LT	4
0f1d683f NC	5	config X86_PCC_CPUFREQ
	6	tristate "Processor Clocking Control interface driver"
	7	depends on ACPI && ACPI_PROCESSOR
	8	help
	9	This driver adds support for the PCC interface.
	10
	11	For details, take a look at:
	12	<file:Documentation/cpu-freq/pcc-cpufreq.txt>.
	13
	14	To compile this driver as a module, choose M here: the
	15	module will be called pcc-cpufreq.
	16
	17	If in doubt, say N.
	18
1da177e4 LT	19	config X86_ACPI_CPUFREQ
	20	tristate "ACPI Processor P-States driver"
	21	select CPU_FREQ_TABLE
	22	depends on ACPI_PROCESSOR
	23	help
	24	This driver adds a CPUFreq driver which utilizes the ACPI
	25	Processor Performance States.
3dc9a633 MG	26	This driver also supports Intel Enhanced Speedstep and newer
3dc9a633 MG	27	AMD CPUs.
1da177e4	28
e8ef9522 SR	29	To compile this driver as a module, choose M here: the
	30	module will be called acpi-cpufreq.
	31
1da177e4 LT	32	For details, take a look at <file:Documentation/cpu-freq/>.
	33
	34	If in doubt, say N.
	35
	36	config ELAN_CPUFREQ
bf6fc9fd	37	tristate "AMD Elan SC400 and SC410"
1da177e4	38	select CPU_FREQ_TABLE
ce9c99af	39	depends on MELAN
1da177e4 LT	40	---help---
	41	This adds the CPUFreq driver for AMD Elan SC400 and SC410
	42	processors.
	43
	44	You need to specify the processor maximum speed as boot
	45	parameter: elanfreq=maxspeed (in kHz) or as module
	46	parameter "max_freq".
	47
	48	For details, take a look at <file:Documentation/cpu-freq/>.
	49
	50	If in doubt, say N.
	51
bf6fc9fd DJ	52	config SC520_CPUFREQ
	53	tristate "AMD Elan SC520"
	54	select CPU_FREQ_TABLE
ce9c99af	55	depends on MELAN
bf6fc9fd DJ	56	---help---
	57	This adds the CPUFreq driver for AMD Elan SC520 processor.
	58
	59	For details, take a look at <file:Documentation/cpu-freq/>.
	60
	61	If in doubt, say N.
	62
	63
1da177e4 LT	64	config X86_POWERNOW_K6
	65	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
	66	select CPU_FREQ_TABLE
e8ef9522	67	depends on X86_32
1da177e4 LT	68	help
	69	This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
	70	AMD K6-3+ processors.
	71
	72	For details, take a look at <file:Documentation/cpu-freq/>.
	73
	74	If in doubt, say N.
	75
	76	config X86_POWERNOW_K7
	77	tristate "AMD Mobile Athlon/Duron PowerNow!"
	78	select CPU_FREQ_TABLE
e8ef9522	79	depends on X86_32
1da177e4 LT	80	help
	81	This adds the CPUFreq driver for mobile AMD K7 mobile processors.
	82
	83	For details, take a look at <file:Documentation/cpu-freq/>.
	84
	85	If in doubt, say N.
	86
	87	config X86_POWERNOW_K7_ACPI
	88	bool
	89	depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
	90	depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
e8ef9522	91	depends on X86_32
1da177e4 LT	92	default y
	93
	94	config X86_POWERNOW_K8
	95	tristate "AMD Opteron/Athlon64 PowerNow!"
	96	select CPU_FREQ_TABLE
57f4fa69	97	depends on ACPI && ACPI_PROCESSOR
1da177e4	98	help
57f4fa69	99	This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors.
1da177e4	100
e8ef9522 SR	101	To compile this driver as a module, choose M here: the
	102	module will be called powernow-k8.
	103
1da177e4 LT	104	For details, take a look at <file:Documentation/cpu-freq/>.
1da177e4 LT	105
1da177e4 LT	106	config X86_GX_SUSPMOD
1da177e4 LT	107	tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
e8ef9522	108	depends on X86_32 && PCI
1da177e4 LT	109	help
	110	This add the CPUFreq driver for NatSemi Geode processors which
	111	support suspend modulation.
	112
	113	For details, take a look at <file:Documentation/cpu-freq/>.
	114
	115	If in doubt, say N.
	116
	117	config X86_SPEEDSTEP_CENTRINO
e8ef9522	118	tristate "Intel Enhanced SpeedStep (deprecated)"
1da177e4	119	select CPU_FREQ_TABLE
e8ef9522 SR	120	select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
e8ef9522 SR	121	depends on X86_32 \|\| (X86_64 && ACPI_PROCESSOR)
1da177e4	122	help
e8ef9522 SR	123	This is deprecated and this functionality is now merged into
	124	acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
	125	speedstep_centrino.
1da177e4	126	This adds the CPUFreq driver for Enhanced SpeedStep enabled
e8ef9522 SR	127	mobile CPUs. This means Intel Pentium M (Centrino) CPUs
	128	or 64bit enabled Intel Xeons.
	129
	130	To compile this driver as a module, choose M here: the
	131	module will be called speedstep-centrino.
388d6c51	132
1da177e4	133	For details, take a look at <file:Documentation/cpu-freq/>.
388d6c51	134
1da177e4 LT	135	If in doubt, say N.
1da177e4 LT	136
1da177e4 LT	137	config X86_SPEEDSTEP_CENTRINO_TABLE
1da177e4 LT	138	bool "Built-in tables for Banias CPUs"
e8ef9522	139	depends on X86_32 && X86_SPEEDSTEP_CENTRINO
1da177e4 LT	140	default y
	141	help
	142	Use built-in tables for Banias CPUs if ACPI encoding
	143	is not available.
	144
	145	If in doubt, say N.
	146
	147	config X86_SPEEDSTEP_ICH
	148	tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
	149	select CPU_FREQ_TABLE
e8ef9522	150	depends on X86_32
1da177e4 LT	151	help
	152	This adds the CPUFreq driver for certain mobile Intel Pentium III
	153	(Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
388d6c51	154	mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2,
1da177e4 LT	155	ICH3 or ICH4 southbridge.
	156
	157	For details, take a look at <file:Documentation/cpu-freq/>.
	158
	159	If in doubt, say N.
	160
	161	config X86_SPEEDSTEP_SMI
	162	tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
	163	select CPU_FREQ_TABLE
e8ef9522	164	depends on X86_32 && EXPERIMENTAL
1da177e4 LT	165	help
1da177e4 LT	166	This adds the CPUFreq driver for certain mobile Intel Pentium III
388d6c51	167	(Coppermine), all mobile Intel Pentium III-M (Tualatin)
1da177e4 LT	168	on systems which have an Intel 440BX/ZX/MX southbridge.
	169
	170	For details, take a look at <file:Documentation/cpu-freq/>.
	171
	172	If in doubt, say N.
	173
	174	config X86_P4_CLOCKMOD
	175	tristate "Intel Pentium 4 clock modulation"
	176	select CPU_FREQ_TABLE
	177	help
	178	This adds the CPUFreq driver for Intel Pentium 4 / XEON
e8ef9522 SR	179	processors. When enabled it will lower CPU temperature by skipping
	180	clocks.
	181
	182	This driver should be only used in exceptional
	183	circumstances when very low power is needed because it causes severe
	184	slowdowns and noticeable latencies. Normally Speedstep should be used
	185	instead.
	186
	187	To compile this driver as a module, choose M here: the
	188	module will be called p4-clockmod.
1da177e4 LT	189
	190	For details, take a look at <file:Documentation/cpu-freq/>.
	191
e8ef9522	192	Unless you are absolutely sure say N.
1da177e4 LT	193
	194	config X86_CPUFREQ_NFORCE2
	195	tristate "nVidia nForce2 FSB changing"
e8ef9522	196	depends on X86_32 && EXPERIMENTAL
1da177e4 LT	197	help
	198	This adds the CPUFreq driver for FSB changing on nVidia nForce2
	199	platforms.
	200
	201	For details, take a look at <file:Documentation/cpu-freq/>.
	202
	203	If in doubt, say N.
	204
	205	config X86_LONGRUN
	206	tristate "Transmeta LongRun"
e8ef9522	207	depends on X86_32
1da177e4 LT	208	help
	209	This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
	210	which support LongRun.
	211
	212	For details, take a look at <file:Documentation/cpu-freq/>.
	213
	214	If in doubt, say N.
	215
	216	config X86_LONGHAUL
	217	tristate "VIA Cyrix III Longhaul"
	218	select CPU_FREQ_TABLE
e8ef9522	219	depends on X86_32 && ACPI_PROCESSOR
1da177e4	220	help
388d6c51 DJ	221	This adds the CPUFreq driver for VIA Samuel/CyrixIII,
388d6c51 DJ	222	VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
1da177e4 LT	223	processors.
	224
	225	For details, take a look at <file:Documentation/cpu-freq/>.
	226
	227	If in doubt, say N.
	228