[mirror_ubuntu-bionic-kernel.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

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