[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 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
	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 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
8a4da6e3 MR	109	config ARM_ARCH_TIMER
8a4da6e3 MR	110	bool
0583fe47	111	select CLKSRC_OF if OF
a2c5d4ed	112
037f6377 WD	113	config ARM_ARCH_TIMER_EVTSTREAM
	114	bool "Support for ARM architected timer event stream generation"
	115	default y if ARM_ARCH_TIMER
77f7ce9a	116	depends on ARM_ARCH_TIMER
037f6377 WD	117	help
	118	This option enables support for event stream generation based on
	119	the ARM architected timer. It is used for waking up CPUs executing
	120	the wfe instruction at a frequency represented as a power-of-2
	121	divisor of the clock rate.
	122	The main use of the event stream is wfe-based timeouts of userspace
	123	locking implementations. It might also be useful for imposing timeout
	124	on wfe to safeguard against any programming errors in case an expected
	125	event is not generated.
	126	This must be disabled for hardware validation purposes to detect any
	127	hardware anomalies of missing events.
	128
c1b40e44 SM	129	config ARM_GLOBAL_TIMER
	130	bool
	131	select CLKSRC_OF if OF
	132	help
	133	This options enables support for the ARM global timer unit
	134
	135	config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
	136	bool
	137	depends on ARM_GLOBAL_TIMER
	138	default y
	139	help
	140	Use ARM global timer clock source as sched_clock
	141
b052ff30 MR	142	config ATMEL_PIT
	143	select CLKSRC_OF if OF
	144	def_bool SOC_AT91SAM9 \|\| SOC_SAMA5
	145
a2c5d4ed JH	146	config CLKSRC_METAG_GENERIC
	147	def_bool y if METAG
	148	help
	149	This option enables support for the Meta per-thread timers.
6938d75a TA	150
	151	config CLKSRC_EXYNOS_MCT
	152	def_bool y if ARCH_EXYNOS
3252a646	153	depends on !ARM64
6938d75a TA	154	help
6938d75a TA	155	Support for Multi Core Timer controller on Exynos SoCs.
241a9871	156
f1189989	157	config CLKSRC_SAMSUNG_PWM
77d84434	158	bool
f1189989 TF	159	help
	160	This is a new clocksource driver for the PWM timer found in
	161	Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
	162	for all devicetree enabled platforms. This driver will be
	163	needed only on systems that do not have the Exynos MCT available.
c1967249	164
2529c3a3 XL	165	config FSL_FTM_TIMER
	166	bool
	167	help
	168	Support for Freescale FlexTimer Module (FTM) timer.
	169
c1967249 JL	170	config VF_PIT_TIMER
	171	bool
	172	help
	173	Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
fd3f1270 MD	174
	175	config SYS_SUPPORTS_SH_CMT
	176	bool
	177
ecb3530d MB	178	config MTK_TIMER
	179	select CLKSRC_OF
	180	select CLKSRC_MMIO
	181	bool
	182
fd3f1270 MD	183	config SYS_SUPPORTS_SH_MTU2
	184	bool
	185
	186	config SYS_SUPPORTS_SH_TMU
	187	bool
	188
	189	config SYS_SUPPORTS_EM_STI
	190	bool
	191
	192	config SH_TIMER_CMT
	193	bool "Renesas CMT timer driver" if COMPILE_TEST
87291a92	194	depends on GENERIC_CLOCKEVENTS
11bc26fe	195	depends on HAS_IOMEM
fd3f1270 MD	196	default SYS_SUPPORTS_SH_CMT
	197	help
	198	This enables build of a clocksource and clockevent driver for
	199	the Compare Match Timer (CMT) hardware available in 16/32/48-bit
	200	variants on a wide range of Mobile and Automotive SoCs from Renesas.
	201
	202	config SH_TIMER_MTU2
	203	bool "Renesas MTU2 timer driver" if COMPILE_TEST
87291a92	204	depends on GENERIC_CLOCKEVENTS
11bc26fe	205	depends on HAS_IOMEM
fd3f1270 MD	206	default SYS_SUPPORTS_SH_MTU2
	207	help
	208	This enables build of a clockevent driver for the Multi-Function
7e139187	209	Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
fd3f1270 MD	210	This hardware comes with 16 bit-timer registers.
	211
	212	config SH_TIMER_TMU
	213	bool "Renesas TMU timer driver" if COMPILE_TEST
87291a92	214	depends on GENERIC_CLOCKEVENTS
11bc26fe	215	depends on HAS_IOMEM
fd3f1270 MD	216	default SYS_SUPPORTS_SH_TMU
	217	help
	218	This enables build of a clocksource and clockevent driver for
	219	the 32-bit Timer Unit (TMU) hardware available on a wide range
	220	SoCs from Renesas.
	221
	222	config EM_TIMER_STI
	223	bool "Renesas STI timer driver" if COMPILE_TEST
40c96312	224	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
fd3f1270 MD	225	default SYS_SUPPORTS_EM_STI
	226	help
	227	This enables build of a clocksource and clockevent driver for
	228	the 48-bit System Timer (STI) hardware available on a SoCs
	229	such as EMEV2 from former NEC Electronics.
dfc25e45	230
3f8e8cee KG	231	config CLKSRC_QCOM
3f8e8cee KG	232	bool
220e2a8d PM	233
	234	config CLKSRC_VERSATILE
	235	bool "ARM Versatile (Express) reference platforms clock source"
b33cdd28	236	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
220e2a8d PM	237	select CLKSRC_OF
	238	default y if MFD_VEXPRESS_SYSREG
	239	help
	240	This option enables clock source based on free running
	241	counter available in the "System Registers" block of
	242	ARM Versatile, RealView and Versatile Express reference
	243	platforms.
58394271	244
fa5635a2 AB	245	config CLKSRC_MIPS_GIC
	246	bool
	247	depends on MIPS_GIC
e12aa828	248	select CLKSRC_OF
fa5635a2	249
e074ff86 DES	250	config CLKSRC_PXA
	251	def_bool y if ARCH_PXA \|\| ARCH_SA1100
	252	select CLKSRC_OF if USE_OF
	253	help
	254	This enables OST0 support available on PXA and SA-11x0
	255	platforms.
58394271	256	endmenu