1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "Clock Source drivers"
3 depends on GENERIC_CLOCKEVENTS
29 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
35 bool "BCM2835 timer driver" if COMPILE_TEST
38 Enables the support for the BCM2835 timer driver.
41 bool "BCM mobile timer driver" if COMPILE_TEST
44 Enables the support for the BCM Kona mobile timer driver.
47 bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
49 Enables the support for the TI DaVinci timer driver.
51 config DIGICOLOR_TIMER
52 bool "Digicolor timer driver" if COMPILE_TEST
56 Enables the support for the digicolor timer driver.
59 bool "DW APB timer driver" if COMPILE_TEST
61 Enables the support for the dw_apb timer.
63 config DW_APB_TIMER_OF
69 bool "Faraday Technology timer driver" if COMPILE_TEST
75 Enables support for the Faraday Technology timer block
79 bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
83 Enables support for the Intel XScale IXP4xx SoC timer.
86 bool "Rockchip timer driver" if COMPILE_TEST
87 depends on ARM || ARM64
91 Enables the support for the Rockchip timer driver.
93 config ARMADA_370_XP_TIMER
94 bool "Armada 370 and XP timer driver" if COMPILE_TEST
99 Enables the support for the Armada 370 and XP timer driver.
102 bool "Meson6 timer driver" if COMPILE_TEST
105 Enables the support for the Meson6 timer driver.
108 bool "Orion timer driver" if COMPILE_TEST
113 Enables the support for the Orion timer driver
116 bool "Owl timer driver" if COMPILE_TEST
119 Enables the support for the Actions Semi Owl timer driver.
122 bool "RDA timer driver" if COMPILE_TEST
126 Enables the support for the RDA Micro timer driver.
129 bool "Sun4i timer driver" if COMPILE_TEST
134 Enables support for the Sun4i timer.
137 bool "Sun5i timer driver" if COMPILE_TEST
139 depends on COMMON_CLK
141 Enables support the Sun5i timer.
144 bool "Tegra timer driver" if COMPILE_TEST
147 depends on ARCH_TEGRA || COMPILE_TEST
149 Enables support for the Tegra driver.
152 bool "VT8500 timer driver" if COMPILE_TEST
155 Enables support for the VT8500 driver.
158 bool "NPCM7xx timer driver" if COMPILE_TEST
163 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
164 where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
166 config CADENCE_TTC_TIMER
167 bool "Cadence TTC timer driver" if COMPILE_TEST
168 depends on COMMON_CLK
170 Enables support for the Cadence TTC driver.
173 bool "ASM9260 timer driver" if COMPILE_TEST
177 Enables support for the ASM9260 timer.
179 config CLKSRC_NOMADIK_MTU
180 bool "Nomakdik clocksource driver" if COMPILE_TEST
184 Support for Multi Timer Unit. MTU provides access
185 to multiple interrupt generating programmable
186 32-bit free running decrementing counters.
188 config CLKSRC_DBX500_PRCMU
189 bool "Clocksource PRCMU Timer" if COMPILE_TEST
192 Use the always on PRCMU Timer as clocksource.
194 config CLPS711X_TIMER
195 bool "Cirrus Logic timer driver" if COMPILE_TEST
198 Enables support for the Cirrus Logic PS711 timer.
201 bool "Atlas7 timer driver" if COMPILE_TEST
204 Enables support for the Atlas7 timer.
207 bool "MXS timer driver" if COMPILE_TEST
211 Enables support for the MXS timer.
214 bool "Prima2 timer driver" if COMPILE_TEST
217 Enables support for the Prima2 timer.
220 bool "U300 timer driver" if COMPILE_TEST
224 Enables support for the U300 timer.
227 bool "NSpire timer driver" if COMPILE_TEST
230 Enables support for the Nspire timer.
232 config KEYSTONE_TIMER
233 bool "Keystone timer driver" if COMPILE_TEST
234 depends on ARM || ARM64
237 Enables support for the Keystone timer.
239 config INTEGRATOR_AP_TIMER
240 bool "Integrator-AP timer driver" if COMPILE_TEST
243 Enables support for the Integrator-AP timer.
246 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
247 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
251 Support to use the timers of EFM32 SoCs as clock source and clock
254 config CLKSRC_LPC32XX
255 bool "Clocksource for LPC32XX" if COMPILE_TEST
261 Support for the LPC32XX clocksource.
263 config CLKSRC_PISTACHIO
264 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
268 Enables the clocksource for the Pistachio SoC.
271 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
272 depends on GENERIC_SCHED_CLOCK
273 select TIMER_OF if OF
275 This option enables support for Texas Instruments 32.768 Hz clocksource
276 available on many OMAP-like platforms.
279 bool "NPS400 clocksource driver" if COMPILE_TEST
280 depends on !PHYS_ADDR_T_64BIT
282 select TIMER_OF if OF
284 NPS400 clocksource support.
285 It has a 64-bit counter with update rate up to 1000MHz.
286 This counter is accessed via couple of 32-bit memory-mapped registers.
289 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
290 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
295 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
296 depends on GENERIC_SCHED_CLOCK
301 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
302 depends on GENERIC_SCHED_CLOCK
305 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
306 (ARC700 as well as ARC HS38).
307 TIMER0 serves as clockevent while TIMER1 provides clocksource.
309 config ARC_TIMERS_64BIT
310 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
311 depends on ARC_TIMERS
314 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
315 RTC is implemented inside the core, while GFRC sits outside the core in
316 ARConnect IP block. Driver automatically picks one of them for clocksource
319 config ARM_ARCH_TIMER
321 select TIMER_OF if OF
322 select TIMER_ACPI if ACPI
324 config ARM_ARCH_TIMER_EVTSTREAM
325 bool "Enable ARM architected timer event stream generation by default"
326 default y if ARM_ARCH_TIMER
327 depends on ARM_ARCH_TIMER
329 This option enables support by default for event stream generation
330 based on the ARM architected timer. It is used for waking up CPUs
331 executing the wfe instruction at a frequency represented as a
332 power-of-2 divisor of the clock rate. The behaviour can also be
333 overridden on the command line using the
334 clocksource.arm_arch_timer.evtstream parameter.
335 The main use of the event stream is wfe-based timeouts of userspace
336 locking implementations. It might also be useful for imposing timeout
337 on wfe to safeguard against any programming errors in case an expected
338 event is not generated.
339 This must be disabled for hardware validation purposes to detect any
340 hardware anomalies of missing events.
342 config ARM_ARCH_TIMER_OOL_WORKAROUND
345 config FSL_ERRATUM_A008585
346 bool "Workaround for Freescale/NXP Erratum A-008585"
348 depends on ARM_ARCH_TIMER && ARM64
349 select ARM_ARCH_TIMER_OOL_WORKAROUND
351 This option enables a workaround for Freescale/NXP Erratum
352 A-008585 ("ARM generic timer may contain an erroneous
353 value"). The workaround will only be active if the
354 fsl,erratum-a008585 property is found in the timer node.
356 config HISILICON_ERRATUM_161010101
357 bool "Workaround for Hisilicon Erratum 161010101"
359 select ARM_ARCH_TIMER_OOL_WORKAROUND
360 depends on ARM_ARCH_TIMER && ARM64
362 This option enables a workaround for Hisilicon Erratum
363 161010101. The workaround will be active if the hisilicon,erratum-161010101
364 property is found in the timer node.
366 config ARM64_ERRATUM_858921
367 bool "Workaround for Cortex-A73 erratum 858921"
369 select ARM_ARCH_TIMER_OOL_WORKAROUND
370 depends on ARM_ARCH_TIMER && ARM64
372 This option enables a workaround applicable to Cortex-A73
373 (all versions), whose counter may return incorrect values.
374 The workaround will be dynamically enabled when an affected
377 config SUN50I_ERRATUM_UNKNOWN1
378 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
380 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
381 select ARM_ARCH_TIMER_OOL_WORKAROUND
383 This option enables a workaround for instability in the timer on
384 the Allwinner A64 SoC. The workaround will only be active if the
385 allwinner,erratum-unknown1 property is found in the timer node.
387 config ARM_GLOBAL_TIMER
388 bool "Support for the ARM global timer" if COMPILE_TEST
389 select TIMER_OF if OF
392 This option enables support for the ARM global timer unit.
394 config ARM_TIMER_SP804
395 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
396 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
398 select TIMER_OF if OF
400 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
402 depends on ARM_GLOBAL_TIMER
405 Use ARM global timer clock source as sched_clock.
407 config ARMV7M_SYSTICK
408 bool "Support for the ARMv7M system time" if COMPILE_TEST
409 select TIMER_OF if OF
412 This option enables support for the ARMv7M system timer unit.
415 bool "Atmel PIT support" if COMPILE_TEST
417 select TIMER_OF if OF
419 Support for the Periodic Interval Timer found on Atmel SoCs.
422 bool "Atmel ST timer support" if COMPILE_TEST
427 Support for the Atmel ST timer.
429 config ATMEL_TCB_CLKSRC
430 bool "Atmel TC Block timer driver" if COMPILE_TEST
431 depends on ARM && HAS_IOMEM
432 select TIMER_OF if OF
434 Support for Timer Counter Blocks on Atmel SoCs.
436 config CLKSRC_EXYNOS_MCT
437 bool "Exynos multi core timer driver" if COMPILE_TEST
438 depends on ARM || ARM64
440 Support for Multi Core Timer controller on Exynos SoCs.
442 config CLKSRC_SAMSUNG_PWM
443 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
446 This is a new clocksource driver for the PWM timer found in
447 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
448 for all devicetree enabled platforms. This driver will be
449 needed only on systems that do not have the Exynos MCT available.
452 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
456 Support for Freescale FlexTimer Module (FTM) timer.
462 Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
464 config OXNAS_RPS_TIMER
465 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
469 This enables support for the Oxford Semiconductor OXNAS RPS timers.
471 config SYS_SUPPORTS_SH_CMT
475 bool "Mediatek timer driver" if COMPILE_TEST
480 Support for Mediatek timer driver.
483 bool "Spreadtrum timer driver" if EXPERT
485 depends on (ARCH_SPRD || COMPILE_TEST)
489 Enables support for the Spreadtrum timer driver.
491 config SYS_SUPPORTS_SH_MTU2
494 config SYS_SUPPORTS_SH_TMU
497 config SYS_SUPPORTS_EM_STI
500 config CLKSRC_JCORE_PIT
501 bool "J-Core PIT timer driver" if COMPILE_TEST
506 This enables build of clocksource and clockevent driver for
507 the integrated PIT in the J-Core synthesizable, open source SoC.
510 bool "Renesas CMT timer driver" if COMPILE_TEST
512 default SYS_SUPPORTS_SH_CMT
514 This enables build of a clocksource and clockevent driver for
515 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
516 variants on a wide range of Mobile and Automotive SoCs from Renesas.
519 bool "Renesas MTU2 timer driver" if COMPILE_TEST
521 default SYS_SUPPORTS_SH_MTU2
523 This enables build of a clockevent driver for the Multi-Function
524 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
525 This hardware comes with 16-bit timer registers.
528 bool "Renesas OSTM timer driver" if COMPILE_TEST
532 Enables the support for the Renesas OSTM.
535 bool "Renesas TMU timer driver" if COMPILE_TEST
537 default SYS_SUPPORTS_SH_TMU
539 This enables build of a clocksource and clockevent driver for
540 the 32-bit Timer Unit (TMU) hardware available on a wide range
544 bool "Renesas STI timer driver" if COMPILE_TEST
546 default SYS_SUPPORTS_EM_STI
548 This enables build of a clocksource and clockevent driver for
549 the 48-bit System Timer (STI) hardware available on a SoCs
550 such as EMEV2 from former NEC Electronics.
553 bool "Qualcomm MSM timer" if COMPILE_TEST
557 This enables the clocksource and the per CPU clockevent driver for the
560 config CLKSRC_VERSATILE
561 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
562 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
564 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
566 This option enables clock source based on free running
567 counter available in the "System Registers" block of
568 ARM Versatile and Versatile Express reference platforms.
570 config CLKSRC_MIPS_GIC
573 select CLOCKSOURCE_WATCHDOG
576 config CLKSRC_TANGO_XTAL
577 bool "Clocksource for Tango SoC" if COMPILE_TEST
582 This enables the clocksource for Tango SoC.
585 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
589 This enables OST0 support available on PXA and SA-11x0
593 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
596 This enables the 8 bits timer for the H8300 platform.
599 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
602 This enables the 16 bits timer for the H8300 platform with the
606 bool "Clocksource for the H8300 platform" if COMPILE_TEST
609 This enables the clocksource for the H8300 platform with the
612 config CLKSRC_IMX_GPT
613 bool "Clocksource using i.MX GPT" if COMPILE_TEST
614 depends on (ARM || ARM64) && CLKDEV_LOOKUP
617 config CLKSRC_IMX_TPM
618 bool "Clocksource using i.MX TPM" if COMPILE_TEST
619 depends on (ARM || ARM64) && CLKDEV_LOOKUP
623 Enable this option to use IMX Timer/PWM Module (TPM) timer as
626 config TIMER_IMX_SYS_CTR
627 bool "i.MX system counter timer" if COMPILE_TEST
630 Enable this option to use i.MX system counter timer as a
634 bool "Low power clocksource found in the LPC" if COMPILE_TEST
635 select TIMER_OF if OF
639 Enable this option to use the Low Power controller timer
642 config ATCPIT100_TIMER
643 bool "ATCPIT100 timer driver"
644 depends on NDS32 || COMPILE_TEST
649 This option enables support for the Andestech ATCPIT100 timers.
652 bool "Timer for the RISC-V platform"
653 depends on GENERIC_SCHED_CLOCK && RISCV
658 This enables the per-hart timer built into all RISC-V systems, which
659 is accessed via both the SBI and the rdcycle instruction. This is
660 required for all RISC-V systems.
663 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
667 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
669 csky,mptimer is not only used in SMP system, it also could be used in
670 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
673 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
678 This option enables support for gx6605s SOC's timer.
680 config MILBEAUT_TIMER
681 bool "Milbeaut timer driver" if COMPILE_TEST
687 Enables the support for Milbeaut timer driver.
690 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
692 depends on MIPS || COMPILE_TEST
693 depends on COMMON_CLK
698 Support for the timer/counter unit of the Ingenic JZ SoCs.
700 config INGENIC_SYSOST
701 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
702 depends on MIPS || COMPILE_TEST
703 depends on COMMON_CLK
708 Support for the SYSOST of the Ingenic X Series SoCs.
711 bool "Clocksource using the OST in Ingenic JZ SoCs"
712 depends on MIPS || COMPILE_TEST
713 depends on COMMON_CLK
716 Support for the Operating System Timer of the Ingenic JZ SoCs.
718 config MICROCHIP_PIT64B
719 bool "Microchip PIT64B support"
720 depends on OF || COMPILE_TEST
724 This option enables Microchip PIT64B timer for Atmel
725 based system. It supports the oneshot, the periodic
726 modes and high resolution. It is used as a clocksource