[linux.git] / drivers / cpufreq / Kconfig

menu "CPU Frequency scaling"

config CPU_FREQ
	bool "CPU Frequency scaling"
	select SRCU
	help
	  CPU Frequency scaling allows you to change the clock speed of 
	  CPUs on the fly. This is a nice method to save power, because 
	  the lower the CPU clock speed, the less power the CPU consumes.

	  Note that this driver doesn't automatically change the CPU
	  clock speed, you need to either enable a dynamic cpufreq governor
	  (see below) after boot, or use a userspace tool.

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

	  If in doubt, say N.

if CPU_FREQ

config CPU_FREQ_GOV_ATTR_SET
	bool

config CPU_FREQ_GOV_COMMON
	select CPU_FREQ_GOV_ATTR_SET
	select IRQ_WORK
	bool

config CPU_FREQ_BOOST_SW
	bool
	depends on THERMAL

config CPU_FREQ_STAT
	tristate "CPU frequency translation statistics"
	default y
	help
	  This driver exports CPU frequency statistics information through sysfs
	  file system.

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

	  If in doubt, say N.

config CPU_FREQ_STAT_DETAILS
	bool "CPU frequency translation statistics details"
	depends on CPU_FREQ_STAT
	help
	  This will show detail CPU frequency translation table in sysfs file
	  system.

	  If in doubt, say N.

choice
	prompt "Default CPUFreq governor"
	default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
	default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	help
	  This option sets which CPUFreq governor shall be loaded at
	  startup. If in doubt, select 'performance'.

config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	bool "performance"
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'performance' as default. This sets
	  the frequency statically to the highest frequency supported by
	  the CPU.

config CPU_FREQ_DEFAULT_GOV_POWERSAVE
	bool "powersave"
	select CPU_FREQ_GOV_POWERSAVE
	help
	  Use the CPUFreq governor 'powersave' as default. This sets
	  the frequency statically to the lowest frequency supported by
	  the CPU.

config CPU_FREQ_DEFAULT_GOV_USERSPACE
	bool "userspace"
	select CPU_FREQ_GOV_USERSPACE
	help
	  Use the CPUFreq governor 'userspace' as default. This allows
	  you to set the CPU frequency manually or when a userspace 
	  program shall be able to set the CPU dynamically without having
	  to enable the userspace governor manually.

config CPU_FREQ_DEFAULT_GOV_ONDEMAND
	bool "ondemand"
	select CPU_FREQ_GOV_ONDEMAND
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'ondemand' as default. This allows
	  you to get a full dynamic frequency capable system by simply
	  loading your cpufreq low-level hardware driver.
	  Be aware that not all cpufreq drivers support the ondemand
	  governor. If unsure have a look at the help section of the
	  driver. Fallback governor will be the performance governor.

config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
	bool "conservative"
	select CPU_FREQ_GOV_CONSERVATIVE
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the CPUFreq governor 'conservative' as default. This allows
	  you to get a full dynamic frequency capable system by simply
	  loading your cpufreq low-level hardware driver.
	  Be aware that not all cpufreq drivers support the conservative
	  governor. If unsure have a look at the help section of the
	  driver. Fallback governor will be the performance governor.

config CPU_FREQ_DEFAULT_GOV_SCHEDUTIL
	bool "schedutil"
	select CPU_FREQ_GOV_SCHEDUTIL
	select CPU_FREQ_GOV_PERFORMANCE
	help
	  Use the 'schedutil' CPUFreq governor by default. If unsure,
	  have a look at the help section of that governor. The fallback
	  governor will be 'performance'.

endchoice

config CPU_FREQ_GOV_PERFORMANCE
	tristate "'performance' governor"
	help
	  This cpufreq governor sets the frequency statically to the
	  highest available CPU frequency.

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

	  If in doubt, say Y.

config CPU_FREQ_GOV_POWERSAVE
	tristate "'powersave' governor"
	help
	  This cpufreq governor sets the frequency statically to the
	  lowest available CPU frequency.

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

	  If in doubt, say Y.

config CPU_FREQ_GOV_USERSPACE
	tristate "'userspace' governor for userspace frequency scaling"
	help
	  Enable this cpufreq governor when you either want to set the
	  CPU frequency manually or when a userspace program shall
	  be able to set the CPU dynamically, like on LART 
	  <http://www.lartmaker.nl/>.

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

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

	  If in doubt, say Y.

config CPU_FREQ_GOV_ONDEMAND
	tristate "'ondemand' cpufreq policy governor"
	select CPU_FREQ_GOV_COMMON
	help
	  'ondemand' - This driver adds a dynamic cpufreq policy governor.
	  The governor does a periodic polling and 
	  changes frequency based on the CPU utilization.
	  The support for this governor depends on CPU capability to
	  do fast frequency switching (i.e, very low latency frequency
	  transitions). 

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

	  For details, take a look at linux/Documentation/cpu-freq.

	  If in doubt, say N.

config CPU_FREQ_GOV_CONSERVATIVE
	tristate "'conservative' cpufreq governor"
	depends on CPU_FREQ
	select CPU_FREQ_GOV_COMMON
	help
	  'conservative' - this driver is rather similar to the 'ondemand'
	  governor both in its source code and its purpose, the difference is
	  its optimisation for better suitability in a battery powered
	  environment.  The frequency is gracefully increased and decreased
	  rather than jumping to 100% when speed is required.

	  If you have a desktop machine then you should really be considering
	  the 'ondemand' governor instead, however if you are using a laptop,
	  PDA or even an AMD64 based computer (due to the unacceptable
	  step-by-step latency issues between the minimum and maximum frequency
	  transitions in the CPU) you will probably want to use this governor.

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

	  For details, take a look at linux/Documentation/cpu-freq.

	  If in doubt, say N.

config CPU_FREQ_GOV_SCHEDUTIL
	tristate "'schedutil' cpufreq policy governor"
	depends on CPU_FREQ
	select CPU_FREQ_GOV_ATTR_SET
	select IRQ_WORK
	help
	  This governor makes decisions based on the utilization data provided
	  by the scheduler.  It sets the CPU frequency to be proportional to
	  the utilization/capacity ratio coming from the scheduler.  If the
	  utilization is frequency-invariant, the new frequency is also
	  proportional to the maximum available frequency.  If that is not the
	  case, it is proportional to the current frequency of the CPU.  The
	  frequency tipping point is at utilization/capacity equal to 80% in
	  both cases.

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

	  If in doubt, say N.

comment "CPU frequency scaling drivers"

config CPUFREQ_DT
	tristate "Generic DT based cpufreq driver"
	depends on HAVE_CLK && OF
	# if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y:
	depends on !CPU_THERMAL || THERMAL
	select PM_OPP
	help
	  This adds a generic DT based cpufreq driver for frequency management.
	  It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
	  systems which share clock and voltage across all CPUs.

	  If in doubt, say N.

if X86
source "drivers/cpufreq/Kconfig.x86"
endif

if ARM || ARM64
source "drivers/cpufreq/Kconfig.arm"
endif

if PPC32 || PPC64
source "drivers/cpufreq/Kconfig.powerpc"
endif

if AVR32
config AVR32_AT32AP_CPUFREQ
	bool "CPU frequency driver for AT32AP"
	depends on PLATFORM_AT32AP
	default n
	help
	  This enables the CPU frequency driver for AT32AP processors.
	  If in doubt, say N.
endif

if IA64
config IA64_ACPI_CPUFREQ
	tristate "ACPI Processor P-States driver"
	depends on ACPI_PROCESSOR
	help
	This driver adds a CPUFreq driver which utilizes the ACPI
	Processor Performance States.

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

	If in doubt, say N.
endif

if MIPS
config LOONGSON2_CPUFREQ
	tristate "Loongson2 CPUFreq Driver"
	help
	  This option adds a CPUFreq driver for loongson processors which
	  support software configurable cpu frequency.

	  Loongson2F and it's successors support this feature.

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

	  If in doubt, say N.

config LOONGSON1_CPUFREQ
	tristate "Loongson1 CPUFreq Driver"
	help
	  This option adds a CPUFreq driver for loongson1 processors which
	  support software configurable cpu frequency.

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

	  If in doubt, say N.
endif

if SPARC64
config SPARC_US3_CPUFREQ
	tristate "UltraSPARC-III CPU Frequency driver"
	help
	  This adds the CPUFreq driver for UltraSPARC-III processors.

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

	  If in doubt, say N.

config SPARC_US2E_CPUFREQ
	tristate "UltraSPARC-IIe CPU Frequency driver"
	help
	  This adds the CPUFreq driver for UltraSPARC-IIe processors.

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

	  If in doubt, say N.
endif

if SUPERH
config SH_CPU_FREQ
	tristate "SuperH CPU Frequency driver"
	help
	  This adds the cpufreq driver for SuperH. Any CPU that supports
	  clock rate rounding through the clock framework can use this
	  driver. While it will make the kernel slightly larger, this is
	  harmless for CPUs that don't support rate rounding. The driver
	  will also generate a notice in the boot log before disabling
	  itself if the CPU in question is not capable of rate rounding.

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

	  If unsure, say N.
endif

config QORIQ_CPUFREQ
	tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
	depends on OF && COMMON_CLK && (PPC_E500MC || ARM)
	depends on !CPU_THERMAL || THERMAL
	select CLK_QORIQ
	help
	  This adds the CPUFreq driver support for Freescale QorIQ SoCs
	  which are capable of changing the CPU's frequency dynamically.

endif
endmenu
Commit	Line	Data
bb0a56ec DJ	1	menu "CPU Frequency scaling"
bb0a56ec DJ	2
1da177e4 LT	3	config CPU_FREQ
1da177e4 LT	4	bool "CPU Frequency scaling"
83fe27ea	5	select SRCU
1da177e4 LT	6	help
	7	CPU Frequency scaling allows you to change the clock speed of
	8	CPUs on the fly. This is a nice method to save power, because
	9	the lower the CPU clock speed, the less power the CPU consumes.
	10
	11	Note that this driver doesn't automatically change the CPU
	12	clock speed, you need to either enable a dynamic cpufreq governor
	13	(see below) after boot, or use a userspace tool.
	14
	15	For details, take a look at <file:Documentation/cpu-freq>.
	16
	17	If in doubt, say N.
	18
	19	if CPU_FREQ
	20
2d0c58ad RW	21	config CPU_FREQ_GOV_ATTR_SET
	22	bool
	23
1e15f295	24	config CPU_FREQ_GOV_COMMON
2d0c58ad	25	select CPU_FREQ_GOV_ATTR_SET
e6f03657	26	select IRQ_WORK
1e15f295 LF	27	bool
1e15f295 LF	28
2fb4719b LM	29	config CPU_FREQ_BOOST_SW
	30	bool
	31	depends on THERMAL
	32
1da177e4	33	config CPU_FREQ_STAT
9101be53	34	tristate "CPU frequency translation statistics"
9101be53 MF	35	default y
	36	help
	37	This driver exports CPU frequency statistics information through sysfs
	38	file system.
	39
	40	To compile this driver as a module, choose M here: the
	41	module will be called cpufreq_stats.
	42
	43	If in doubt, say N.
1da177e4 LT	44
1da177e4 LT	45	config CPU_FREQ_STAT_DETAILS
9101be53 MF	46	bool "CPU frequency translation statistics details"
	47	depends on CPU_FREQ_STAT
	48	help
	49	This will show detail CPU frequency translation table in sysfs file
	50	system.
	51
	52	If in doubt, say N.
1da177e4 LT	53
	54	choice
	55	prompt "Default CPUFreq governor"
559f56c7	56	default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ \|\| ARM_SA1110_CPUFREQ
1da177e4 LT	57	default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	58	help
	59	This option sets which CPUFreq governor shall be loaded at
	60	startup. If in doubt, select 'performance'.
	61
	62	config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
	63	bool "performance"
	64	select CPU_FREQ_GOV_PERFORMANCE
	65	help
	66	Use the CPUFreq governor 'performance' as default. This sets
	67	the frequency statically to the highest frequency supported by
	68	the CPU.
	69
30d221db AG	70	config CPU_FREQ_DEFAULT_GOV_POWERSAVE
30d221db AG	71	bool "powersave"
30d221db AG	72	select CPU_FREQ_GOV_POWERSAVE
	73	help
	74	Use the CPUFreq governor 'powersave' as default. This sets
	75	the frequency statically to the lowest frequency supported by
	76	the CPU.
	77
1da177e4 LT	78	config CPU_FREQ_DEFAULT_GOV_USERSPACE
	79	bool "userspace"
	80	select CPU_FREQ_GOV_USERSPACE
	81	help
	82	Use the CPUFreq governor 'userspace' as default. This allows
0211a9c8	83	you to set the CPU frequency manually or when a userspace
1da177e4 LT	84	program shall be able to set the CPU dynamically without having
	85	to enable the userspace governor manually.
	86
1c256245 TR	87	config CPU_FREQ_DEFAULT_GOV_ONDEMAND
	88	bool "ondemand"
	89	select CPU_FREQ_GOV_ONDEMAND
	90	select CPU_FREQ_GOV_PERFORMANCE
	91	help
	92	Use the CPUFreq governor 'ondemand' as default. This allows
	93	you to get a full dynamic frequency capable system by simply
	94	loading your cpufreq low-level hardware driver.
	95	Be aware that not all cpufreq drivers support the ondemand
	96	governor. If unsure have a look at the help section of the
	97	driver. Fallback governor will be the performance governor.
	98
	99	config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
	100	bool "conservative"
	101	select CPU_FREQ_GOV_CONSERVATIVE
	102	select CPU_FREQ_GOV_PERFORMANCE
	103	help
	104	Use the CPUFreq governor 'conservative' as default. This allows
	105	you to get a full dynamic frequency capable system by simply
	106	loading your cpufreq low-level hardware driver.
	107	Be aware that not all cpufreq drivers support the conservative
	108	governor. If unsure have a look at the help section of the
	109	driver. Fallback governor will be the performance governor.
9bdcb44e RW	110
	111	config CPU_FREQ_DEFAULT_GOV_SCHEDUTIL
	112	bool "schedutil"
	113	select CPU_FREQ_GOV_SCHEDUTIL
	114	select CPU_FREQ_GOV_PERFORMANCE
	115	help
	116	Use the 'schedutil' CPUFreq governor by default. If unsure,
	117	have a look at the help section of that governor. The fallback
	118	governor will be 'performance'.
	119
1da177e4 LT	120	endchoice
	121
	122	config CPU_FREQ_GOV_PERFORMANCE
9101be53 MF	123	tristate "'performance' governor"
9101be53 MF	124	help
1da177e4 LT	125	This cpufreq governor sets the frequency statically to the
	126	highest available CPU frequency.
	127
9101be53 MF	128	To compile this driver as a module, choose M here: the
	129	module will be called cpufreq_performance.
	130
1da177e4 LT	131	If in doubt, say Y.
	132
	133	config CPU_FREQ_GOV_POWERSAVE
9101be53 MF	134	tristate "'powersave' governor"
9101be53 MF	135	help
1da177e4 LT	136	This cpufreq governor sets the frequency statically to the
	137	lowest available CPU frequency.
	138
9101be53 MF	139	To compile this driver as a module, choose M here: the
	140	module will be called cpufreq_powersave.
	141
1da177e4 LT	142	If in doubt, say Y.
	143
	144	config CPU_FREQ_GOV_USERSPACE
9101be53 MF	145	tristate "'userspace' governor for userspace frequency scaling"
9101be53 MF	146	help
1da177e4	147	Enable this cpufreq governor when you either want to set the
0211a9c8	148	CPU frequency manually or when a userspace program shall
1da177e4	149	be able to set the CPU dynamically, like on LART
4c41251e	150	<http://www.lartmaker.nl/>.
1da177e4	151
9101be53 MF	152	To compile this driver as a module, choose M here: the
	153	module will be called cpufreq_userspace.
	154
1da177e4 LT	155	For details, take a look at <file:Documentation/cpu-freq/>.
	156
	157	If in doubt, say Y.
	158
	159	config CPU_FREQ_GOV_ONDEMAND
	160	tristate "'ondemand' cpufreq policy governor"
1e15f295	161	select CPU_FREQ_GOV_COMMON
1da177e4 LT	162	help
	163	'ondemand' - This driver adds a dynamic cpufreq policy governor.
	164	The governor does a periodic polling and
	165	changes frequency based on the CPU utilization.
	166	The support for this governor depends on CPU capability to
	167	do fast frequency switching (i.e, very low latency frequency
	168	transitions).
	169
9101be53 MF	170	To compile this driver as a module, choose M here: the
	171	module will be called cpufreq_ondemand.
	172
1da177e4 LT	173	For details, take a look at linux/Documentation/cpu-freq.
	174
	175	If in doubt, say N.
	176
b9170836 DJ	177	config CPU_FREQ_GOV_CONSERVATIVE
	178	tristate "'conservative' cpufreq governor"
	179	depends on CPU_FREQ
1e15f295	180	select CPU_FREQ_GOV_COMMON
b9170836 DJ	181	help
	182	'conservative' - this driver is rather similar to the 'ondemand'
	183	governor both in its source code and its purpose, the difference is
	184	its optimisation for better suitability in a battery powered
	185	environment. The frequency is gracefully increased and decreased
	186	rather than jumping to 100% when speed is required.
	187
	188	If you have a desktop machine then you should really be considering
	189	the 'ondemand' governor instead, however if you are using a laptop,
	190	PDA or even an AMD64 based computer (due to the unacceptable
	191	step-by-step latency issues between the minimum and maximum frequency
	192	transitions in the CPU) you will probably want to use this governor.
	193
9101be53 MF	194	To compile this driver as a module, choose M here: the
	195	module will be called cpufreq_conservative.
	196
b9170836 DJ	197	For details, take a look at linux/Documentation/cpu-freq.
	198
	199	If in doubt, say N.
	200
9bdcb44e RW	201	config CPU_FREQ_GOV_SCHEDUTIL
	202	tristate "'schedutil' cpufreq policy governor"
	203	depends on CPU_FREQ
	204	select CPU_FREQ_GOV_ATTR_SET
	205	select IRQ_WORK
	206	help
	207	This governor makes decisions based on the utilization data provided
	208	by the scheduler. It sets the CPU frequency to be proportional to
	209	the utilization/capacity ratio coming from the scheduler. If the
	210	utilization is frequency-invariant, the new frequency is also
	211	proportional to the maximum available frequency. If that is not the
	212	case, it is proportional to the current frequency of the CPU. The
	213	frequency tipping point is at utilization/capacity equal to 80% in
	214	both cases.
	215
	216	To compile this driver as a module, choose M here: the module will
	217	be called cpufreq_schedutil.
	218
	219	If in doubt, say N.
	220
f41f4815 VK	221	comment "CPU frequency scaling drivers"
f41f4815 VK	222
bbcf0719 VK	223	config CPUFREQ_DT
bbcf0719 VK	224	tristate "Generic DT based cpufreq driver"
5fbfbcd3	225	depends on HAVE_CLK && OF
bbcf0719	226	# if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y:
217886d3	227	depends on !CPU_THERMAL \|\| THERMAL
109df086	228	select PM_OPP
95ceafd4	229	help
bbcf0719	230	This adds a generic DT based cpufreq driver for frequency management.
95ceafd4 SG	231	It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
	232	systems which share clock and voltage across all CPUs.
	233
	234	If in doubt, say N.
	235
f41f4815	236	if X86
bb0a56ec	237	source "drivers/cpufreq/Kconfig.x86"
f41f4815	238	endif
bb0a56ec	239
f41f4815	240	if ARM \|\| ARM64
f7d77079	241	source "drivers/cpufreq/Kconfig.arm"
f41f4815	242	endif
f7d77079	243
f41f4815 VK	244	if PPC32 \|\| PPC64
	245	source "drivers/cpufreq/Kconfig.powerpc"
	246	endif
81c720c9	247
f41f4815	248	if AVR32
81c720c9 VK	249	config AVR32_AT32AP_CPUFREQ
	250	bool "CPU frequency driver for AT32AP"
	251	depends on PLATFORM_AT32AP
	252	default n
	253	help
	254	This enables the CPU frequency driver for AT32AP processors.
	255	If in doubt, say N.
f41f4815	256	endif
81c720c9	257
f41f4815	258	if IA64
ab423e43 VK	259	config IA64_ACPI_CPUFREQ
ab423e43 VK	260	tristate "ACPI Processor P-States driver"
ab423e43 VK	261	depends on ACPI_PROCESSOR
	262	help
	263	This driver adds a CPUFreq driver which utilizes the ACPI
	264	Processor Performance States.
	265
	266	For details, take a look at <file:Documentation/cpu-freq/>.
	267
	268	If in doubt, say N.
f41f4815	269	endif
ab423e43	270
f41f4815	271	if MIPS
7a998935 VK	272	config LOONGSON2_CPUFREQ
7a998935 VK	273	tristate "Loongson2 CPUFreq Driver"
7a998935 VK	274	help
	275	This option adds a CPUFreq driver for loongson processors which
	276	support software configurable cpu frequency.
	277
	278	Loongson2F and it's successors support this feature.
	279
	280	For details, take a look at <file:Documentation/cpu-freq/>.
	281
	282	If in doubt, say N.
	283
a0a22cf1 KC	284	config LOONGSON1_CPUFREQ
	285	tristate "Loongson1 CPUFreq Driver"
	286	help
	287	This option adds a CPUFreq driver for loongson1 processors which
	288	support software configurable cpu frequency.
	289
	290	For details, take a look at <file:Documentation/cpu-freq/>.
	291
	292	If in doubt, say N.
f41f4815	293	endif
a0a22cf1	294
f41f4815	295	if SPARC64
764295ae VK	296	config SPARC_US3_CPUFREQ
764295ae VK	297	tristate "UltraSPARC-III CPU Frequency driver"
764295ae VK	298	help
	299	This adds the CPUFreq driver for UltraSPARC-III processors.
	300
	301	For details, take a look at <file:Documentation/cpu-freq>.
	302
	303	If in doubt, say N.
	304
	305	config SPARC_US2E_CPUFREQ
	306	tristate "UltraSPARC-IIe CPU Frequency driver"
764295ae VK	307	help
	308	This adds the CPUFreq driver for UltraSPARC-IIe processors.
	309
	310	For details, take a look at <file:Documentation/cpu-freq>.
	311
	312	If in doubt, say N.
f41f4815	313	endif
764295ae	314
f41f4815	315	if SUPERH
7258267e VK	316	config SH_CPU_FREQ
7258267e VK	317	tristate "SuperH CPU Frequency driver"
7258267e VK	318	help
	319	This adds the cpufreq driver for SuperH. Any CPU that supports
	320	clock rate rounding through the clock framework can use this
	321	driver. While it will make the kernel slightly larger, this is
	322	harmless for CPUs that don't support rate rounding. The driver
	323	will also generate a notice in the boot log before disabling
	324	itself if the CPU in question is not capable of rate rounding.
	325
	326	For details, take a look at <file:Documentation/cpu-freq>.
	327
	328	If unsure, say N.
f41f4815	329	endif
7258267e	330
2f249358 TY	331	config QORIQ_CPUFREQ
	332	tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
	333	depends on OF && COMMON_CLK && (PPC_E500MC \|\| ARM)
ddd30ef4	334	depends on !CPU_THERMAL \|\| THERMAL
2f249358 TY	335	select CLK_QORIQ
	336	help
	337	This adds the CPUFreq driver support for Freescale QorIQ SoCs
	338	which are capable of changing the CPU's frequency dynamically.
	339
bb0a56ec DJ	340	endif
bb0a56ec DJ	341	endmenu