[linux-2.6-block.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 ASM9260_TIMER
	bool
	select CLKSRC_MMIO
	select CLKSRC_OF

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 CLKSRC_LPC32XX
	bool
	select CLKSRC_MMIO
	select CLKSRC_OF

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 ATMEL_ST
	bool
	select CLKSRC_OF
	select MFD_SYSCON

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
	depends on HAS_IOMEM
	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
	depends on HAS_IOMEM
	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
	depends on HAS_IOMEM
	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 PLAT_VERSATILE && 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.
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
a8b1b9fc DL	66	config ASM9260_TIMER
	67	bool
	68	select CLKSRC_MMIO
	69	select CLKSRC_OF
	70
694e33a7 LW	71	config CLKSRC_NOMADIK_MTU
	72	bool
	73	depends on (ARCH_NOMADIK \|\| ARCH_U8500)
	74	select CLKSRC_MMIO
	75	help
	76	Support for Multi Timer Unit. MTU provides access
	77	to multiple interrupt generating programmable
	78	32-bit free running decrementing counters.
	79
	80	config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
	81	bool
	82	depends on CLKSRC_NOMADIK_MTU
	83	help
	84	Use the Multi Timer Unit as the sched_clock.
	85
489bccea MW	86	config CLKSRC_DBX500_PRCMU
489bccea MW	87	bool "Clocksource PRCMU Timer"
29746f48	88	depends on UX500_SOC_DB8500
489bccea MW	89	default y
	90	help
	91	Use the always on PRCMU Timer as clocksource
	92
	93	config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
	94	bool "Clocksource PRCMU Timer sched_clock"
694e33a7	95	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
489bccea MW	96	default y
	97	help
	98	Use the always on PRCMU Timer as sched_clock
985c0679	99
9c9b7818 UKK	100	config CLKSRC_EFM32
	101	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
	102	depends on OF && ARM && (ARCH_EFM32 \|\| COMPILE_TEST)
09ca2757	103	select CLKSRC_MMIO
9c9b7818 UKK	104	default ARCH_EFM32
	105	help
	106	Support to use the timers of EFM32 SoCs as clock source and clock
	107	event device.
	108
050dd322 JE	109	config CLKSRC_LPC32XX
	110	bool
	111	select CLKSRC_MMIO
	112	select CLKSRC_OF
	113
8a4da6e3 MR	114	config ARM_ARCH_TIMER
8a4da6e3 MR	115	bool
0583fe47	116	select CLKSRC_OF if OF
a2c5d4ed	117
037f6377 WD	118	config ARM_ARCH_TIMER_EVTSTREAM
	119	bool "Support for ARM architected timer event stream generation"
	120	default y if ARM_ARCH_TIMER
77f7ce9a	121	depends on ARM_ARCH_TIMER
037f6377 WD	122	help
	123	This option enables support for event stream generation based on
	124	the ARM architected timer. It is used for waking up CPUs executing
	125	the wfe instruction at a frequency represented as a power-of-2
	126	divisor of the clock rate.
	127	The main use of the event stream is wfe-based timeouts of userspace
	128	locking implementations. It might also be useful for imposing timeout
	129	on wfe to safeguard against any programming errors in case an expected
	130	event is not generated.
	131	This must be disabled for hardware validation purposes to detect any
	132	hardware anomalies of missing events.
	133
c1b40e44 SM	134	config ARM_GLOBAL_TIMER
	135	bool
	136	select CLKSRC_OF if OF
	137	help
	138	This options enables support for the ARM global timer unit
	139
	140	config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	141	bool
	142	depends on ARM_GLOBAL_TIMER
	143	default y
	144	help
	145	Use ARM global timer clock source as sched_clock
	146
b052ff30 MR	147	config ATMEL_PIT
	148	select CLKSRC_OF if OF
	149	def_bool SOC_AT91SAM9 \|\| SOC_SAMA5
	150
b53cdd03 AB	151	config ATMEL_ST
	152	bool
	153	select CLKSRC_OF
7ab7ef74	154	select MFD_SYSCON
b53cdd03	155
a2c5d4ed JH	156	config CLKSRC_METAG_GENERIC
	157	def_bool y if METAG
	158	help
	159	This option enables support for the Meta per-thread timers.
6938d75a TA	160
	161	config CLKSRC_EXYNOS_MCT
	162	def_bool y if ARCH_EXYNOS
3252a646	163	depends on !ARM64
6938d75a TA	164	help
6938d75a TA	165	Support for Multi Core Timer controller on Exynos SoCs.
241a9871	166
f1189989	167	config CLKSRC_SAMSUNG_PWM
77d84434	168	bool
f1189989 TF	169	help
	170	This is a new clocksource driver for the PWM timer found in
	171	Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	172	for all devicetree enabled platforms. This driver will be
	173	needed only on systems that do not have the Exynos MCT available.
c1967249	174
2529c3a3 XL	175	config FSL_FTM_TIMER
	176	bool
	177	help
	178	Support for Freescale FlexTimer Module (FTM) timer.
	179
c1967249 JL	180	config VF_PIT_TIMER
	181	bool
	182	help
	183	Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
fd3f1270 MD	184
	185	config SYS_SUPPORTS_SH_CMT
	186	bool
	187
ecb3530d MB	188	config MTK_TIMER
	189	select CLKSRC_OF
	190	select CLKSRC_MMIO
	191	bool
	192
fd3f1270 MD	193	config SYS_SUPPORTS_SH_MTU2
	194	bool
	195
	196	config SYS_SUPPORTS_SH_TMU
	197	bool
	198
	199	config SYS_SUPPORTS_EM_STI
	200	bool
	201
	202	config SH_TIMER_CMT
	203	bool "Renesas CMT timer driver" if COMPILE_TEST
87291a92	204	depends on GENERIC_CLOCKEVENTS
11bc26fe	205	depends on HAS_IOMEM
fd3f1270 MD	206	default SYS_SUPPORTS_SH_CMT
	207	help
	208	This enables build of a clocksource and clockevent driver for
	209	the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	210	variants on a wide range of Mobile and Automotive SoCs from Renesas.
	211
	212	config SH_TIMER_MTU2
	213	bool "Renesas MTU2 timer driver" if COMPILE_TEST
87291a92	214	depends on GENERIC_CLOCKEVENTS
11bc26fe	215	depends on HAS_IOMEM
fd3f1270 MD	216	default SYS_SUPPORTS_SH_MTU2
	217	help
	218	This enables build of a clockevent driver for the Multi-Function
7e139187	219	Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
fd3f1270 MD	220	This hardware comes with 16 bit-timer registers.
	221
	222	config SH_TIMER_TMU
	223	bool "Renesas TMU timer driver" if COMPILE_TEST
87291a92	224	depends on GENERIC_CLOCKEVENTS
11bc26fe	225	depends on HAS_IOMEM
fd3f1270 MD	226	default SYS_SUPPORTS_SH_TMU
	227	help
	228	This enables build of a clocksource and clockevent driver for
	229	the 32-bit Timer Unit (TMU) hardware available on a wide range
	230	SoCs from Renesas.
	231
	232	config EM_TIMER_STI
	233	bool "Renesas STI timer driver" if COMPILE_TEST
40c96312	234	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
fd3f1270 MD	235	default SYS_SUPPORTS_EM_STI
	236	help
	237	This enables build of a clocksource and clockevent driver for
	238	the 48-bit System Timer (STI) hardware available on a SoCs
	239	such as EMEV2 from former NEC Electronics.
dfc25e45	240
3f8e8cee KG	241	config CLKSRC_QCOM
3f8e8cee KG	242	bool
220e2a8d PM	243
	244	config CLKSRC_VERSATILE
	245	bool "ARM Versatile (Express) reference platforms clock source"
ff37015b	246	depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
220e2a8d PM	247	select CLKSRC_OF
	248	default y if MFD_VEXPRESS_SYSREG
	249	help
	250	This option enables clock source based on free running
	251	counter available in the "System Registers" block of
	252	ARM Versatile, RealView and Versatile Express reference
	253	platforms.
58394271	254
fa5635a2 AB	255	config CLKSRC_MIPS_GIC
	256	bool
	257	depends on MIPS_GIC
e12aa828	258	select CLKSRC_OF
fa5635a2	259
e074ff86 DES	260	config CLKSRC_PXA
	261	def_bool y if ARCH_PXA \|\| ARCH_SA1100
	262	select CLKSRC_OF if USE_OF
	263	help
	264	This enables OST0 support available on PXA and SA-11x0
	265	platforms.
58394271	266	endmenu