1 menu "Clock Source drivers"
2 depends on !ARCH_USES_GETTIMEOFFSET
25 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
31 bool "BCM2835 timer driver" if COMPILE_TEST
32 depends on GENERIC_CLOCKEVENTS
35 Enables the support for the BCM2835 timer driver.
38 bool "BCM mobile timer driver" if COMPILE_TEST
39 depends on GENERIC_CLOCKEVENTS
42 Enables the support for the BCM Kona mobile timer driver.
44 config DIGICOLOR_TIMER
45 bool "Digicolor timer driver" if COMPILE_TEST
46 depends on GENERIC_CLOCKEVENTS
50 Enables the support for the digicolor timer driver.
53 bool "DW APB timer driver" if COMPILE_TEST
54 depends on GENERIC_CLOCKEVENTS
56 Enables the support for the dw_apb timer.
58 config DW_APB_TIMER_OF
64 bool "Rockchip timer driver" if COMPILE_TEST
65 depends on ARM || ARM64
68 Enables the support for the rockchip timer driver.
70 config ARMADA_370_XP_TIMER
71 bool "Armada 370 and XP timer driver" if COMPILE_TEST
76 Enables the support for the Armada 370 and XP timer driver.
79 bool "Meson6 timer driver" if COMPILE_TEST
80 depends on GENERIC_CLOCKEVENTS
83 Enables the support for the Meson6 timer driver.
86 bool "Orion timer driver" if COMPILE_TEST
91 Enables the support for the Orion timer driver
94 bool "Sun4i timer driver" if COMPILE_TEST
95 depends on GENERIC_CLOCKEVENTS
99 Enables support for the Sun4i timer.
102 bool "Sun5i timer driver" if COMPILE_TEST
104 depends on COMMON_CLK
106 Enables support the Sun5i timer.
109 bool "Tegra timer driver" if COMPILE_TEST
113 Enables support for the Tegra driver.
116 bool "VT8500 timer driver" if COMPILE_TEST
117 depends on GENERIC_CLOCKEVENTS
120 Enables support for the VT8500 driver.
122 config CADENCE_TTC_TIMER
123 bool "Cadence TTC timer driver" if COMPILE_TEST
124 depends on COMMON_CLK
126 Enables support for the cadence ttc driver.
129 bool "ASM9260 timer driver" if COMPILE_TEST
130 depends on GENERIC_CLOCKEVENTS
134 Enables support for the ASM9260 timer.
136 config CLKSRC_NOMADIK_MTU
137 bool "Nomakdik clocksource driver" if COMPILE_TEST
141 Support for Multi Timer Unit. MTU provides access
142 to multiple interrupt generating programmable
143 32-bit free running decrementing counters.
145 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
147 depends on CLKSRC_NOMADIK_MTU
149 Use the Multi Timer Unit as the sched_clock.
151 config CLKSRC_DBX500_PRCMU
152 bool "Clocksource PRCMU Timer" if COMPILE_TEST
153 depends on GENERIC_CLOCKEVENTS
156 Use the always on PRCMU Timer as clocksource
158 config CLPS711X_TIMER
159 bool "Cirrus logic timer driver" if COMPILE_TEST
160 depends on GENERIC_CLOCKEVENTS
163 Enables support for the Cirrus Logic PS711 timer.
166 bool "Atlas7 timer driver" if COMPILE_TEST
167 depends on GENERIC_CLOCKEVENTS
170 Enables support for the Atlas7 timer.
173 bool "Moxart timer driver" if COMPILE_TEST
174 depends on GENERIC_CLOCKEVENTS
177 Enables support for the Moxart timer.
180 bool "Mxs timer driver" if COMPILE_TEST
181 depends on GENERIC_CLOCKEVENTS
185 Enables support for the Mxs timer.
188 bool "Prima2 timer driver" if COMPILE_TEST
189 depends on GENERIC_CLOCKEVENTS
192 Enables support for the Prima2 timer.
195 bool "U300 timer driver" if COMPILE_TEST
196 depends on GENERIC_CLOCKEVENTS
200 Enables support for the U300 timer.
203 bool "NSpire timer driver" if COMPILE_TEST
204 depends on GENERIC_CLOCKEVENTS
207 Enables support for the Nspire timer.
209 config KEYSTONE_TIMER
210 bool "Keystone timer driver" if COMPILE_TEST
211 depends on GENERIC_CLOCKEVENTS
212 depends on ARM || ARM64
215 Enables support for the Keystone timer.
217 config INTEGRATOR_AP_TIMER
218 bool "Integrator-ap timer driver" if COMPILE_TEST
219 depends on GENERIC_CLOCKEVENTS
222 Enables support for the Integrator-ap timer.
224 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
225 bool "Clocksource PRCMU Timer sched_clock"
226 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
229 Use the always on PRCMU Timer as sched_clock
232 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
233 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
237 Support to use the timers of EFM32 SoCs as clock source and clock
240 config CLKSRC_LPC32XX
241 bool "Clocksource for LPC32XX" if COMPILE_TEST
242 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
247 Support for the LPC32XX clocksource.
249 config CLKSRC_PISTACHIO
250 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
254 Enables the clocksource for the Pistachio SoC.
257 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
258 depends on GENERIC_SCHED_CLOCK
259 select CLKSRC_OF if OF
261 This option enables support for Texas Instruments 32.768 Hz clocksource
262 available on many OMAP-like platforms.
265 bool "NPS400 clocksource driver" if COMPILE_TEST
266 depends on !PHYS_ADDR_T_64BIT
268 select CLKSRC_OF if OF
270 NPS400 clocksource support.
271 Got 64 bit counter with update rate up to 1000MHz.
272 This counter is accessed via couple of 32 bit memory mapped registers.
275 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
276 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
280 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
281 depends on GENERIC_SCHED_CLOCK
285 config ARM_ARCH_TIMER
287 select CLKSRC_OF if OF
288 select CLKSRC_ACPI if ACPI
290 config ARM_ARCH_TIMER_EVTSTREAM
291 bool "Enable ARM architected timer event stream generation by default"
292 default y if ARM_ARCH_TIMER
293 depends on ARM_ARCH_TIMER
295 This option enables support by default for event stream generation
296 based on the ARM architected timer. It is used for waking up CPUs
297 executing the wfe instruction at a frequency represented as a
298 power-of-2 divisor of the clock rate. The behaviour can also be
299 overridden on the command line using the
300 clocksource.arm_arch_timer.evtstream parameter.
301 The main use of the event stream is wfe-based timeouts of userspace
302 locking implementations. It might also be useful for imposing timeout
303 on wfe to safeguard against any programming errors in case an expected
304 event is not generated.
305 This must be disabled for hardware validation purposes to detect any
306 hardware anomalies of missing events.
308 config ARM_ARCH_TIMER_OOL_WORKAROUND
311 config FSL_ERRATUM_A008585
312 bool "Workaround for Freescale/NXP Erratum A-008585"
314 depends on ARM_ARCH_TIMER && ARM64
315 select ARM_ARCH_TIMER_OOL_WORKAROUND
317 This option enables a workaround for Freescale/NXP Erratum
318 A-008585 ("ARM generic timer may contain an erroneous
319 value"). The workaround will only be active if the
320 fsl,erratum-a008585 property is found in the timer node.
322 config ARM_GLOBAL_TIMER
323 bool "Support for the ARM global timer" if COMPILE_TEST
324 select CLKSRC_OF if OF
327 This options enables support for the ARM global timer unit
329 config ARM_TIMER_SP804
330 bool "Support for Dual Timer SP804 module"
331 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
333 select CLKSRC_OF if OF
335 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
337 depends on ARM_GLOBAL_TIMER
340 Use ARM global timer clock source as sched_clock
342 config ARMV7M_SYSTICK
343 bool "Support for the ARMv7M system time" if COMPILE_TEST
344 select CLKSRC_OF if OF
347 This options enables support for the ARMv7M system timer unit
350 select CLKSRC_OF if OF
351 def_bool SOC_AT91SAM9 || SOC_SAMA5
354 bool "Atmel ST timer support" if COMPILE_TEST
355 depends on GENERIC_CLOCKEVENTS
359 Support for the Atmel ST timer.
361 config CLKSRC_METAG_GENERIC
364 This option enables support for the Meta per-thread timers.
366 config CLKSRC_EXYNOS_MCT
367 bool "Exynos multi core timer driver" if COMPILE_TEST
368 depends on ARM || ARM64
370 Support for Multi Core Timer controller on Exynos SoCs.
372 config CLKSRC_SAMSUNG_PWM
373 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
374 depends on GENERIC_CLOCKEVENTS
377 This is a new clocksource driver for the PWM timer found in
378 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
379 for all devicetree enabled platforms. This driver will be
380 needed only on systems that do not have the Exynos MCT available.
383 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
384 depends on GENERIC_CLOCKEVENTS
388 Support for Freescale FlexTimer Module (FTM) timer.
394 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
396 config OXNAS_RPS_TIMER
397 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
398 depends on GENERIC_CLOCKEVENTS
402 This enables support for the Oxford Semiconductor OXNAS RPS timers.
404 config SYS_SUPPORTS_SH_CMT
408 bool "Mediatek timer driver" if COMPILE_TEST
409 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
413 Support for Mediatek timer driver.
415 config SYS_SUPPORTS_SH_MTU2
418 config SYS_SUPPORTS_SH_TMU
421 config SYS_SUPPORTS_EM_STI
424 config CLKSRC_JCORE_PIT
425 bool "J-Core PIT timer driver" if COMPILE_TEST
427 depends on GENERIC_CLOCKEVENTS
431 This enables build of clocksource and clockevent driver for
432 the integrated PIT in the J-Core synthesizable, open source SoC.
435 bool "Renesas CMT timer driver" if COMPILE_TEST
436 depends on GENERIC_CLOCKEVENTS
438 default SYS_SUPPORTS_SH_CMT
440 This enables build of a clocksource and clockevent driver for
441 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
442 variants on a wide range of Mobile and Automotive SoCs from Renesas.
445 bool "Renesas MTU2 timer driver" if COMPILE_TEST
446 depends on GENERIC_CLOCKEVENTS
448 default SYS_SUPPORTS_SH_MTU2
450 This enables build of a clockevent driver for the Multi-Function
451 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
452 This hardware comes with 16 bit-timer registers.
455 bool "Renesas TMU timer driver" if COMPILE_TEST
456 depends on GENERIC_CLOCKEVENTS
458 default SYS_SUPPORTS_SH_TMU
460 This enables build of a clocksource and clockevent driver for
461 the 32-bit Timer Unit (TMU) hardware available on a wide range
465 bool "Renesas STI timer driver" if COMPILE_TEST
466 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
467 default SYS_SUPPORTS_EM_STI
469 This enables build of a clocksource and clockevent driver for
470 the 48-bit System Timer (STI) hardware available on a SoCs
471 such as EMEV2 from former NEC Electronics.
474 bool "Qualcomm MSM timer" if COMPILE_TEST
478 This enables the clocksource and the per CPU clockevent driver for the
481 config CLKSRC_VERSATILE
482 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
483 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
485 default y if MFD_VEXPRESS_SYSREG
487 This option enables clock source based on free running
488 counter available in the "System Registers" block of
489 ARM Versatile, RealView and Versatile Express reference
492 config CLKSRC_MIPS_GIC
497 config CLKSRC_TANGO_XTAL
498 bool "Clocksource for Tango SoC" if COMPILE_TEST
503 This enables the clocksource for Tango SoC
506 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
507 depends on GENERIC_CLOCKEVENTS
511 This enables OST0 support available on PXA and SA-11x0
515 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
516 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
518 This enables the 8 bits timer for the H8300 platform.
521 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
522 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
524 This enables the 16 bits timer for the H8300 platform with the
528 bool "Clocksource for the H8300 platform" if COMPILE_TEST
529 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
531 This enables the clocksource for the H8300 platform with the
534 config CLKSRC_IMX_GPT
535 bool "Clocksource using i.MX GPT" if COMPILE_TEST
536 depends on ARM && CLKDEV_LOOKUP
540 bool "Low power clocksource found in the LPC" if COMPILE_TEST
541 select CLKSRC_OF if OF
545 Enable this option to use the Low Power controller timer