[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 MESON6_TIMER
	bool
	select CLKSRC_MMIO

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 ATMEL_PIT
	select CLKSRC_OF if OF
	def_bool SOC_AT91SAM9 || SOC_SAMA5

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
	depends on !ARM64
	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 && HAS_IOMEM
	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
e4a6b378 CC	33	config MESON6_TIMER
e4a6b378 CC	34	bool
7b6b0a45	35	select CLKSRC_MMIO
e4a6b378	36
0c1dcfd5 SH	37	config ORION_TIMER
	38	select CLKSRC_OF
	39	select CLKSRC_MMIO
	40	bool
	41
119fd635	42	config SUN4I_TIMER
71c568c0	43	select CLKSRC_MMIO
b2ac5d75 MR	44	bool
b2ac5d75 MR	45
67905540 MR	46	config SUN5I_HSTIMER
	47	select CLKSRC_MMIO
	48	bool
	49
ff7ec345 TP	50	config VT8500_TIMER
	51	bool
	52
4f0f234f MS	53	config CADENCE_TTC_TIMER
	54	bool
	55
694e33a7 LW	56	config CLKSRC_NOMADIK_MTU
	57	bool
	58	depends on (ARCH_NOMADIK \|\| ARCH_U8500)
	59	select CLKSRC_MMIO
	60	help
	61	Support for Multi Timer Unit. MTU provides access
	62	to multiple interrupt generating programmable
	63	32-bit free running decrementing counters.
	64
	65	config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
	66	bool
	67	depends on CLKSRC_NOMADIK_MTU
	68	help
	69	Use the Multi Timer Unit as the sched_clock.
	70
489bccea MW	71	config CLKSRC_DBX500_PRCMU
489bccea MW	72	bool "Clocksource PRCMU Timer"
29746f48	73	depends on UX500_SOC_DB8500
489bccea MW	74	default y
	75	help
	76	Use the always on PRCMU Timer as clocksource
	77
	78	config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
	79	bool "Clocksource PRCMU Timer sched_clock"
694e33a7	80	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
489bccea MW	81	default y
	82	help
	83	Use the always on PRCMU Timer as sched_clock
985c0679	84
9c9b7818 UKK	85	config CLKSRC_EFM32
	86	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
	87	depends on OF && ARM && (ARCH_EFM32 \|\| COMPILE_TEST)
09ca2757	88	select CLKSRC_MMIO
9c9b7818 UKK	89	default ARCH_EFM32
	90	help
	91	Support to use the timers of EFM32 SoCs as clock source and clock
	92	event device.
	93
8a4da6e3 MR	94	config ARM_ARCH_TIMER
8a4da6e3 MR	95	bool
0583fe47	96	select CLKSRC_OF if OF
a2c5d4ed	97
037f6377 WD	98	config ARM_ARCH_TIMER_EVTSTREAM
	99	bool "Support for ARM architected timer event stream generation"
	100	default y if ARM_ARCH_TIMER
77f7ce9a	101	depends on ARM_ARCH_TIMER
037f6377 WD	102	help
	103	This option enables support for event stream generation based on
	104	the ARM architected timer. It is used for waking up CPUs executing
	105	the wfe instruction at a frequency represented as a power-of-2
	106	divisor of the clock rate.
	107	The main use of the event stream is wfe-based timeouts of userspace
	108	locking implementations. It might also be useful for imposing timeout
	109	on wfe to safeguard against any programming errors in case an expected
	110	event is not generated.
	111	This must be disabled for hardware validation purposes to detect any
	112	hardware anomalies of missing events.
	113
c1b40e44 SM	114	config ARM_GLOBAL_TIMER
	115	bool
	116	select CLKSRC_OF if OF
	117	help
	118	This options enables support for the ARM global timer unit
	119
	120	config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	121	bool
	122	depends on ARM_GLOBAL_TIMER
	123	default y
	124	help
	125	Use ARM global timer clock source as sched_clock
	126
b052ff30 MR	127	config ATMEL_PIT
	128	select CLKSRC_OF if OF
	129	def_bool SOC_AT91SAM9 \|\| SOC_SAMA5
	130
a2c5d4ed JH	131	config CLKSRC_METAG_GENERIC
	132	def_bool y if METAG
	133	help
	134	This option enables support for the Meta per-thread timers.
6938d75a TA	135
	136	config CLKSRC_EXYNOS_MCT
	137	def_bool y if ARCH_EXYNOS
3252a646	138	depends on !ARM64
6938d75a TA	139	help
6938d75a TA	140	Support for Multi Core Timer controller on Exynos SoCs.
241a9871	141
f1189989	142	config CLKSRC_SAMSUNG_PWM
77d84434	143	bool
f1189989 TF	144	help
	145	This is a new clocksource driver for the PWM timer found in
	146	Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	147	for all devicetree enabled platforms. This driver will be
	148	needed only on systems that do not have the Exynos MCT available.
c1967249	149
2529c3a3 XL	150	config FSL_FTM_TIMER
	151	bool
	152	help
	153	Support for Freescale FlexTimer Module (FTM) timer.
	154
c1967249 JL	155	config VF_PIT_TIMER
	156	bool
	157	help
	158	Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
fd3f1270 MD	159
	160	config SYS_SUPPORTS_SH_CMT
	161	bool
	162
ecb3530d MB	163	config MTK_TIMER
	164	select CLKSRC_OF
	165	select CLKSRC_MMIO
	166	bool
	167
fd3f1270 MD	168	config SYS_SUPPORTS_SH_MTU2
	169	bool
	170
	171	config SYS_SUPPORTS_SH_TMU
	172	bool
	173
	174	config SYS_SUPPORTS_EM_STI
	175	bool
	176
	177	config SH_TIMER_CMT
	178	bool "Renesas CMT timer driver" if COMPILE_TEST
87291a92	179	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	180	default SYS_SUPPORTS_SH_CMT
	181	help
	182	This enables build of a clocksource and clockevent driver for
	183	the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	184	variants on a wide range of Mobile and Automotive SoCs from Renesas.
	185
	186	config SH_TIMER_MTU2
	187	bool "Renesas MTU2 timer driver" if COMPILE_TEST
87291a92	188	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	189	default SYS_SUPPORTS_SH_MTU2
	190	help
	191	This enables build of a clockevent driver for the Multi-Function
7e139187	192	Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
fd3f1270 MD	193	This hardware comes with 16 bit-timer registers.
	194
	195	config SH_TIMER_TMU
	196	bool "Renesas TMU timer driver" if COMPILE_TEST
87291a92	197	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	198	default SYS_SUPPORTS_SH_TMU
	199	help
	200	This enables build of a clocksource and clockevent driver for
	201	the 32-bit Timer Unit (TMU) hardware available on a wide range
	202	SoCs from Renesas.
	203
	204	config EM_TIMER_STI
	205	bool "Renesas STI timer driver" if COMPILE_TEST
40c96312	206	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
fd3f1270 MD	207	default SYS_SUPPORTS_EM_STI
	208	help
	209	This enables build of a clocksource and clockevent driver for
	210	the 48-bit System Timer (STI) hardware available on a SoCs
	211	such as EMEV2 from former NEC Electronics.
dfc25e45	212
3f8e8cee KG	213	config CLKSRC_QCOM
3f8e8cee KG	214	bool
220e2a8d PM	215
	216	config CLKSRC_VERSATILE
	217	bool "ARM Versatile (Express) reference platforms clock source"
b33cdd28	218	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
220e2a8d PM	219	select CLKSRC_OF
	220	default y if MFD_VEXPRESS_SYSREG
	221	help
	222	This option enables clock source based on free running
	223	counter available in the "System Registers" block of
	224	ARM Versatile, RealView and Versatile Express reference
	225	platforms.
58394271 JD	226
58394271 JD	227	endmenu