[deliverable/linux.git] / drivers / clocksource / Kconfig

menu "Clock Source drivers"

config CLKSRC_OF
	bool

config CLKSRC_I8253
	bool

config CLKEVT_I8253
	bool

config I8253_LOCK
	bool

config CLKBLD_I8253
	def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK

config CLKSRC_MMIO
	bool

config DW_APB_TIMER
	bool

config DW_APB_TIMER_OF
	bool
	select DW_APB_TIMER
	select CLKSRC_OF

config ARMADA_370_XP_TIMER
	bool
	select CLKSRC_OF

config ORION_TIMER
	select CLKSRC_OF
	select CLKSRC_MMIO
	bool

config SUN4I_TIMER
	select CLKSRC_MMIO
	bool

config SUN5I_HSTIMER
	select CLKSRC_MMIO
	bool

config VT8500_TIMER
	bool

config CADENCE_TTC_TIMER
	bool

config CLKSRC_NOMADIK_MTU
	bool
	depends on (ARCH_NOMADIK || ARCH_U8500)
	select CLKSRC_MMIO
	help
	  Support for Multi Timer Unit. MTU provides access
	  to multiple interrupt generating programmable
	  32-bit free running decrementing counters.

config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
	bool
	depends on CLKSRC_NOMADIK_MTU
	help
	  Use the Multi Timer Unit as the sched_clock.

config CLKSRC_DBX500_PRCMU
	bool "Clocksource PRCMU Timer"
	depends on UX500_SOC_DB8500
	default y
	help
	  Use the always on PRCMU Timer as clocksource

config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
	bool "Clocksource PRCMU Timer sched_clock"
	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
	default y
	help
	  Use the always on PRCMU Timer as sched_clock

config CLKSRC_EFM32
	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
	depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
	select CLKSRC_MMIO
	default ARCH_EFM32
	help
	  Support to use the timers of EFM32 SoCs as clock source and clock
	  event device.

config ARM_ARCH_TIMER
	bool
	select CLKSRC_OF if OF

config ARM_ARCH_TIMER_EVTSTREAM
	bool "Support for ARM architected timer event stream generation"
	default y if ARM_ARCH_TIMER
	depends on ARM_ARCH_TIMER
	help
	  This option enables support for event stream generation based on
	  the ARM architected timer. It is used for waking up CPUs executing
	  the wfe instruction at a frequency represented as a power-of-2
	  divisor of the clock rate.
	  The main use of the event stream is wfe-based timeouts of userspace
	  locking implementations. It might also be useful for imposing timeout
	  on wfe to safeguard against any programming errors in case an expected
	  event is not generated.
	  This must be disabled for hardware validation purposes to detect any
	  hardware anomalies of missing events.

config ARM_GLOBAL_TIMER
	bool
	select CLKSRC_OF if OF
	help
	  This options enables support for the ARM global timer unit

config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	bool
	depends on ARM_GLOBAL_TIMER
	default y
	help
	 Use ARM global timer clock source as sched_clock

config CLKSRC_METAG_GENERIC
	def_bool y if METAG
	help
	  This option enables support for the Meta per-thread timers.

config CLKSRC_EXYNOS_MCT
	def_bool y if ARCH_EXYNOS
	help
	  Support for Multi Core Timer controller on Exynos SoCs.

config CLKSRC_SAMSUNG_PWM
	bool
	help
	  This is a new clocksource driver for the PWM timer found in
	  Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	  for all devicetree enabled platforms. This driver will be
	  needed only on systems that do not have the Exynos MCT available.

config FSL_FTM_TIMER
	bool
	help
	  Support for Freescale FlexTimer Module (FTM) timer.

config VF_PIT_TIMER
	bool
	help
	  Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.

config SYS_SUPPORTS_SH_CMT
        bool

config MTK_TIMER
	select CLKSRC_OF
	select CLKSRC_MMIO
	bool

config SYS_SUPPORTS_SH_MTU2
        bool

config SYS_SUPPORTS_SH_TMU
        bool

config SYS_SUPPORTS_EM_STI
        bool

config SH_TIMER_CMT
	bool "Renesas CMT timer driver" if COMPILE_TEST
	depends on GENERIC_CLOCKEVENTS
	default SYS_SUPPORTS_SH_CMT
	help
	  This enables build of a clocksource and clockevent driver for
	  the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	  variants on a wide range of Mobile and Automotive SoCs from Renesas.

config SH_TIMER_MTU2
	bool "Renesas MTU2 timer driver" if COMPILE_TEST
	depends on GENERIC_CLOCKEVENTS
	default SYS_SUPPORTS_SH_MTU2
	help
	  This enables build of a clockevent driver for the Multi-Function
	  Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
	  This hardware comes with 16 bit-timer registers.

config SH_TIMER_TMU
	bool "Renesas TMU timer driver" if COMPILE_TEST
	depends on GENERIC_CLOCKEVENTS
	default SYS_SUPPORTS_SH_TMU
	help
	  This enables build of a clocksource and clockevent driver for
	  the 32-bit Timer Unit (TMU) hardware available on a wide range
	  SoCs from Renesas.

config EM_TIMER_STI
	bool "Renesas STI timer driver" if COMPILE_TEST
	depends on GENERIC_CLOCKEVENTS
	default SYS_SUPPORTS_EM_STI
	help
	  This enables build of a clocksource and clockevent driver for
	  the 48-bit System Timer (STI) hardware available on a SoCs
	  such as EMEV2 from former NEC Electronics.

config CLKSRC_QCOM
	bool

config CLKSRC_VERSATILE
	bool "ARM Versatile (Express) reference platforms clock source"
	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
	select CLKSRC_OF
	default y if MFD_VEXPRESS_SYSREG
	help
	  This option enables clock source based on free running
	  counter available in the "System Registers" block of
	  ARM Versatile, RealView and Versatile Express reference
	  platforms.

endmenu
Commit	Line	Data
58394271 JD	1	menu "Clock Source drivers"
58394271 JD	2
ae278a93 SW	3	config CLKSRC_OF
	4	bool
	5
89c0b8e2 RK	6	config CLKSRC_I8253
89c0b8e2 RK	7	bool
442c8176	8
e6220bdc TG	9	config CLKEVT_I8253
	10	bool
	11
15f304b6 RB	12	config I8253_LOCK
	13	bool
	14
	15	config CLKBLD_I8253
e6220bdc	16	def_bool y if CLKSRC_I8253 \|\| CLKEVT_I8253 \|\| I8253_LOCK
15f304b6	17
442c8176 RK	18	config CLKSRC_MMIO
442c8176 RK	19	bool
06c3df49 JI	20
	21	config DW_APB_TIMER
	22	bool
489bccea	23
cfda5901 DN	24	config DW_APB_TIMER_OF
cfda5901 DN	25	bool
1b4eca0f	26	select DW_APB_TIMER
10021488	27	select CLKSRC_OF
cfda5901	28
6fe9cbd1 GC	29	config ARMADA_370_XP_TIMER
6fe9cbd1 GC	30	bool
7b0dd72a	31	select CLKSRC_OF
6fe9cbd1	32
0c1dcfd5 SH	33	config ORION_TIMER
	34	select CLKSRC_OF
	35	select CLKSRC_MMIO
	36	bool
	37
119fd635	38	config SUN4I_TIMER
71c568c0	39	select CLKSRC_MMIO
b2ac5d75 MR	40	bool
b2ac5d75 MR	41
67905540 MR	42	config SUN5I_HSTIMER
	43	select CLKSRC_MMIO
	44	bool
	45
ff7ec345 TP	46	config VT8500_TIMER
	47	bool
	48
4f0f234f MS	49	config CADENCE_TTC_TIMER
	50	bool
	51
694e33a7 LW	52	config CLKSRC_NOMADIK_MTU
	53	bool
	54	depends on (ARCH_NOMADIK \|\| ARCH_U8500)
	55	select CLKSRC_MMIO
	56	help
	57	Support for Multi Timer Unit. MTU provides access
	58	to multiple interrupt generating programmable
	59	32-bit free running decrementing counters.
	60
	61	config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
	62	bool
	63	depends on CLKSRC_NOMADIK_MTU
	64	help
	65	Use the Multi Timer Unit as the sched_clock.
	66
489bccea MW	67	config CLKSRC_DBX500_PRCMU
489bccea MW	68	bool "Clocksource PRCMU Timer"
29746f48	69	depends on UX500_SOC_DB8500
489bccea MW	70	default y
	71	help
	72	Use the always on PRCMU Timer as clocksource
	73
	74	config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
	75	bool "Clocksource PRCMU Timer sched_clock"
694e33a7	76	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
489bccea MW	77	default y
	78	help
	79	Use the always on PRCMU Timer as sched_clock
985c0679	80
9c9b7818 UKK	81	config CLKSRC_EFM32
	82	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
	83	depends on OF && ARM && (ARCH_EFM32 \|\| COMPILE_TEST)
09ca2757	84	select CLKSRC_MMIO
9c9b7818 UKK	85	default ARCH_EFM32
	86	help
	87	Support to use the timers of EFM32 SoCs as clock source and clock
	88	event device.
	89
8a4da6e3 MR	90	config ARM_ARCH_TIMER
8a4da6e3 MR	91	bool
0583fe47	92	select CLKSRC_OF if OF
a2c5d4ed	93
037f6377 WD	94	config ARM_ARCH_TIMER_EVTSTREAM
	95	bool "Support for ARM architected timer event stream generation"
	96	default y if ARM_ARCH_TIMER
77f7ce9a	97	depends on ARM_ARCH_TIMER
037f6377 WD	98	help
	99	This option enables support for event stream generation based on
	100	the ARM architected timer. It is used for waking up CPUs executing
	101	the wfe instruction at a frequency represented as a power-of-2
	102	divisor of the clock rate.
	103	The main use of the event stream is wfe-based timeouts of userspace
	104	locking implementations. It might also be useful for imposing timeout
	105	on wfe to safeguard against any programming errors in case an expected
	106	event is not generated.
	107	This must be disabled for hardware validation purposes to detect any
	108	hardware anomalies of missing events.
	109
c1b40e44 SM	110	config ARM_GLOBAL_TIMER
	111	bool
	112	select CLKSRC_OF if OF
	113	help
	114	This options enables support for the ARM global timer unit
	115
	116	config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	117	bool
	118	depends on ARM_GLOBAL_TIMER
	119	default y
	120	help
	121	Use ARM global timer clock source as sched_clock
	122
a2c5d4ed JH	123	config CLKSRC_METAG_GENERIC
	124	def_bool y if METAG
	125	help
	126	This option enables support for the Meta per-thread timers.
6938d75a TA	127
	128	config CLKSRC_EXYNOS_MCT
	129	def_bool y if ARCH_EXYNOS
	130	help
	131	Support for Multi Core Timer controller on Exynos SoCs.
241a9871	132
f1189989	133	config CLKSRC_SAMSUNG_PWM
77d84434	134	bool
f1189989 TF	135	help
	136	This is a new clocksource driver for the PWM timer found in
	137	Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	138	for all devicetree enabled platforms. This driver will be
	139	needed only on systems that do not have the Exynos MCT available.
c1967249	140
2529c3a3 XL	141	config FSL_FTM_TIMER
	142	bool
	143	help
	144	Support for Freescale FlexTimer Module (FTM) timer.
	145
c1967249 JL	146	config VF_PIT_TIMER
	147	bool
	148	help
	149	Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
fd3f1270 MD	150
	151	config SYS_SUPPORTS_SH_CMT
	152	bool
	153
ecb3530d MB	154	config MTK_TIMER
	155	select CLKSRC_OF
	156	select CLKSRC_MMIO
	157	bool
	158
fd3f1270 MD	159	config SYS_SUPPORTS_SH_MTU2
	160	bool
	161
	162	config SYS_SUPPORTS_SH_TMU
	163	bool
	164
	165	config SYS_SUPPORTS_EM_STI
	166	bool
	167
	168	config SH_TIMER_CMT
	169	bool "Renesas CMT timer driver" if COMPILE_TEST
87291a92	170	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	171	default SYS_SUPPORTS_SH_CMT
	172	help
	173	This enables build of a clocksource and clockevent driver for
	174	the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	175	variants on a wide range of Mobile and Automotive SoCs from Renesas.
	176
	177	config SH_TIMER_MTU2
	178	bool "Renesas MTU2 timer driver" if COMPILE_TEST
87291a92	179	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	180	default SYS_SUPPORTS_SH_MTU2
	181	help
	182	This enables build of a clockevent driver for the Multi-Function
7e139187	183	Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
fd3f1270 MD	184	This hardware comes with 16 bit-timer registers.
	185
	186	config SH_TIMER_TMU
	187	bool "Renesas TMU timer driver" if COMPILE_TEST
87291a92	188	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	189	default SYS_SUPPORTS_SH_TMU
	190	help
	191	This enables build of a clocksource and clockevent driver for
	192	the 32-bit Timer Unit (TMU) hardware available on a wide range
	193	SoCs from Renesas.
	194
	195	config EM_TIMER_STI
	196	bool "Renesas STI timer driver" if COMPILE_TEST
87291a92	197	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	198	default SYS_SUPPORTS_EM_STI
	199	help
	200	This enables build of a clocksource and clockevent driver for
	201	the 48-bit System Timer (STI) hardware available on a SoCs
	202	such as EMEV2 from former NEC Electronics.
dfc25e45	203
3f8e8cee KG	204	config CLKSRC_QCOM
3f8e8cee KG	205	bool
220e2a8d PM	206
	207	config CLKSRC_VERSATILE
	208	bool "ARM Versatile (Express) reference platforms clock source"
b33cdd28	209	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
220e2a8d PM	210	select CLKSRC_OF
	211	default y if MFD_VEXPRESS_SYSREG
	212	help
	213	This option enables clock source based on free running
	214	counter available in the "System Registers" block of
	215	ARM Versatile, RealView and Versatile Express reference
	216	platforms.
58394271 JD	217
58394271 JD	218	endmenu