[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 DIGICOLOR_TIMER
	bool

config DW_APB_TIMER
	bool

config DW_APB_TIMER_OF
	bool
	select DW_APB_TIMER
	select CLKSRC_OF

config ROCKCHIP_TIMER
	bool
	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 TEGRA_TIMER
	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.

config CLKSRC_MIPS_GIC
	bool
	depends on MIPS_GIC
	select CLKSRC_OF

config CLKSRC_PXA
	def_bool y if ARCH_PXA || ARCH_SA1100
	select CLKSRC_OF if USE_OF
	help
	  This enables OST0 support available on PXA and SA-11x0
	  platforms.

config ASM9260_TIMER
	bool "Alphascale ASM9260 timer driver"
	depends on GENERIC_CLOCKEVENTS
	select CLKSRC_MMIO
	select CLKSRC_OF
	default y if MACH_ASM9260
	help
	  This enables build of a clocksource and clockevent driver for
	  the 32-bit System Timer hardware available on a Alphascale ASM9260.

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	20
9b8bb773 BS	21	config DIGICOLOR_TIMER
	22	bool
	23
06c3df49 JI	24	config DW_APB_TIMER
06c3df49 JI	25	bool
489bccea	26
cfda5901 DN	27	config DW_APB_TIMER_OF
cfda5901 DN	28	bool
1b4eca0f	29	select DW_APB_TIMER
10021488	30	select CLKSRC_OF
cfda5901	31
468b8c4c DL	32	config ROCKCHIP_TIMER
	33	bool
	34	select CLKSRC_OF
	35
6fe9cbd1 GC	36	config ARMADA_370_XP_TIMER
6fe9cbd1 GC	37	bool
7b0dd72a	38	select CLKSRC_OF
6fe9cbd1	39
e4a6b378 CC	40	config MESON6_TIMER
e4a6b378 CC	41	bool
7b6b0a45	42	select CLKSRC_MMIO
e4a6b378	43
0c1dcfd5 SH	44	config ORION_TIMER
	45	select CLKSRC_OF
	46	select CLKSRC_MMIO
	47	bool
	48
119fd635	49	config SUN4I_TIMER
71c568c0	50	select CLKSRC_MMIO
b2ac5d75 MR	51	bool
b2ac5d75 MR	52
67905540 MR	53	config SUN5I_HSTIMER
	54	select CLKSRC_MMIO
	55	bool
	56
910978e7 TR	57	config TEGRA_TIMER
	58	bool
	59
ff7ec345 TP	60	config VT8500_TIMER
	61	bool
	62
4f0f234f MS	63	config CADENCE_TTC_TIMER
	64	bool
	65
694e33a7 LW	66	config CLKSRC_NOMADIK_MTU
	67	bool
	68	depends on (ARCH_NOMADIK \|\| ARCH_U8500)
	69	select CLKSRC_MMIO
	70	help
	71	Support for Multi Timer Unit. MTU provides access
	72	to multiple interrupt generating programmable
	73	32-bit free running decrementing counters.
	74
	75	config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
	76	bool
	77	depends on CLKSRC_NOMADIK_MTU
	78	help
	79	Use the Multi Timer Unit as the sched_clock.
	80
489bccea MW	81	config CLKSRC_DBX500_PRCMU
489bccea MW	82	bool "Clocksource PRCMU Timer"
29746f48	83	depends on UX500_SOC_DB8500
489bccea MW	84	default y
	85	help
	86	Use the always on PRCMU Timer as clocksource
	87
	88	config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
	89	bool "Clocksource PRCMU Timer sched_clock"
694e33a7	90	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
489bccea MW	91	default y
	92	help
	93	Use the always on PRCMU Timer as sched_clock
985c0679	94
9c9b7818 UKK	95	config CLKSRC_EFM32
	96	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
	97	depends on OF && ARM && (ARCH_EFM32 \|\| COMPILE_TEST)
09ca2757	98	select CLKSRC_MMIO
9c9b7818 UKK	99	default ARCH_EFM32
	100	help
	101	Support to use the timers of EFM32 SoCs as clock source and clock
	102	event device.
	103
8a4da6e3 MR	104	config ARM_ARCH_TIMER
8a4da6e3 MR	105	bool
0583fe47	106	select CLKSRC_OF if OF
a2c5d4ed	107
037f6377 WD	108	config ARM_ARCH_TIMER_EVTSTREAM
	109	bool "Support for ARM architected timer event stream generation"
	110	default y if ARM_ARCH_TIMER
77f7ce9a	111	depends on ARM_ARCH_TIMER
037f6377 WD	112	help
	113	This option enables support for event stream generation based on
	114	the ARM architected timer. It is used for waking up CPUs executing
	115	the wfe instruction at a frequency represented as a power-of-2
	116	divisor of the clock rate.
	117	The main use of the event stream is wfe-based timeouts of userspace
	118	locking implementations. It might also be useful for imposing timeout
	119	on wfe to safeguard against any programming errors in case an expected
	120	event is not generated.
	121	This must be disabled for hardware validation purposes to detect any
	122	hardware anomalies of missing events.
	123
c1b40e44 SM	124	config ARM_GLOBAL_TIMER
	125	bool
	126	select CLKSRC_OF if OF
	127	help
	128	This options enables support for the ARM global timer unit
	129
	130	config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	131	bool
	132	depends on ARM_GLOBAL_TIMER
	133	default y
	134	help
	135	Use ARM global timer clock source as sched_clock
	136
b052ff30 MR	137	config ATMEL_PIT
	138	select CLKSRC_OF if OF
	139	def_bool SOC_AT91SAM9 \|\| SOC_SAMA5
	140
a2c5d4ed JH	141	config CLKSRC_METAG_GENERIC
	142	def_bool y if METAG
	143	help
	144	This option enables support for the Meta per-thread timers.
6938d75a TA	145
	146	config CLKSRC_EXYNOS_MCT
	147	def_bool y if ARCH_EXYNOS
3252a646	148	depends on !ARM64
6938d75a TA	149	help
6938d75a TA	150	Support for Multi Core Timer controller on Exynos SoCs.
241a9871	151
f1189989	152	config CLKSRC_SAMSUNG_PWM
77d84434	153	bool
f1189989 TF	154	help
	155	This is a new clocksource driver for the PWM timer found in
	156	Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	157	for all devicetree enabled platforms. This driver will be
	158	needed only on systems that do not have the Exynos MCT available.
c1967249	159
2529c3a3 XL	160	config FSL_FTM_TIMER
	161	bool
	162	help
	163	Support for Freescale FlexTimer Module (FTM) timer.
	164
c1967249 JL	165	config VF_PIT_TIMER
	166	bool
	167	help
	168	Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
fd3f1270 MD	169
	170	config SYS_SUPPORTS_SH_CMT
	171	bool
	172
ecb3530d MB	173	config MTK_TIMER
	174	select CLKSRC_OF
	175	select CLKSRC_MMIO
	176	bool
	177
fd3f1270 MD	178	config SYS_SUPPORTS_SH_MTU2
	179	bool
	180
	181	config SYS_SUPPORTS_SH_TMU
	182	bool
	183
	184	config SYS_SUPPORTS_EM_STI
	185	bool
	186
	187	config SH_TIMER_CMT
	188	bool "Renesas CMT timer driver" if COMPILE_TEST
87291a92	189	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	190	default SYS_SUPPORTS_SH_CMT
	191	help
	192	This enables build of a clocksource and clockevent driver for
	193	the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	194	variants on a wide range of Mobile and Automotive SoCs from Renesas.
	195
	196	config SH_TIMER_MTU2
	197	bool "Renesas MTU2 timer driver" if COMPILE_TEST
87291a92	198	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	199	default SYS_SUPPORTS_SH_MTU2
	200	help
	201	This enables build of a clockevent driver for the Multi-Function
7e139187	202	Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
fd3f1270 MD	203	This hardware comes with 16 bit-timer registers.
	204
	205	config SH_TIMER_TMU
	206	bool "Renesas TMU timer driver" if COMPILE_TEST
87291a92	207	depends on GENERIC_CLOCKEVENTS
fd3f1270 MD	208	default SYS_SUPPORTS_SH_TMU
	209	help
	210	This enables build of a clocksource and clockevent driver for
	211	the 32-bit Timer Unit (TMU) hardware available on a wide range
	212	SoCs from Renesas.
	213
	214	config EM_TIMER_STI
	215	bool "Renesas STI timer driver" if COMPILE_TEST
40c96312	216	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
fd3f1270 MD	217	default SYS_SUPPORTS_EM_STI
	218	help
	219	This enables build of a clocksource and clockevent driver for
	220	the 48-bit System Timer (STI) hardware available on a SoCs
	221	such as EMEV2 from former NEC Electronics.
dfc25e45	222
3f8e8cee KG	223	config CLKSRC_QCOM
3f8e8cee KG	224	bool
220e2a8d PM	225
	226	config CLKSRC_VERSATILE
	227	bool "ARM Versatile (Express) reference platforms clock source"
b33cdd28	228	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
220e2a8d PM	229	select CLKSRC_OF
	230	default y if MFD_VEXPRESS_SYSREG
	231	help
	232	This option enables clock source based on free running
	233	counter available in the "System Registers" block of
	234	ARM Versatile, RealView and Versatile Express reference
	235	platforms.
58394271	236
fa5635a2 AB	237	config CLKSRC_MIPS_GIC
	238	bool
	239	depends on MIPS_GIC
e12aa828	240	select CLKSRC_OF
fa5635a2	241
e074ff86 DES	242	config CLKSRC_PXA
	243	def_bool y if ARCH_PXA \|\| ARCH_SA1100
	244	select CLKSRC_OF if USE_OF
	245	help
	246	This enables OST0 support available on PXA and SA-11x0
	247	platforms.
	248
8d8bd7be OR	249	config ASM9260_TIMER
	250	bool "Alphascale ASM9260 timer driver"
	251	depends on GENERIC_CLOCKEVENTS
	252	select CLKSRC_MMIO
	253	select CLKSRC_OF
	254	default y if MACH_ASM9260
	255	help
	256	This enables build of a clocksource and clockevent driver for
	257	the 32-bit System Timer hardware available on a Alphascale ASM9260.
	258
58394271	259	endmenu