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)
294 config CLKSRC_STM32_LP
295 bool "Low power clocksource for STM32 SoCs"
296 depends on MFD_STM32_LPTIMER || COMPILE_TEST
299 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
300 depends on GENERIC_SCHED_CLOCK
305 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
306 depends on GENERIC_SCHED_CLOCK
309 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
310 (ARC700 as well as ARC HS38).
311 TIMER0 serves as clockevent while TIMER1 provides clocksource.
313 config ARC_TIMERS_64BIT
314 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
315 depends on ARC_TIMERS
318 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
319 RTC is implemented inside the core, while GFRC sits outside the core in
320 ARConnect IP block. Driver automatically picks one of them for clocksource
323 config ARM_ARCH_TIMER
325 select TIMER_OF if OF
326 select TIMER_ACPI if ACPI
328 config ARM_ARCH_TIMER_EVTSTREAM
329 bool "Enable ARM architected timer event stream generation by default"
330 default y if ARM_ARCH_TIMER
331 depends on ARM_ARCH_TIMER
333 This option enables support by default for event stream generation
334 based on the ARM architected timer. It is used for waking up CPUs
335 executing the wfe instruction at a frequency represented as a
336 power-of-2 divisor of the clock rate. The behaviour can also be
337 overridden on the command line using the
338 clocksource.arm_arch_timer.evtstream parameter.
339 The main use of the event stream is wfe-based timeouts of userspace
340 locking implementations. It might also be useful for imposing timeout
341 on wfe to safeguard against any programming errors in case an expected
342 event is not generated.
343 This must be disabled for hardware validation purposes to detect any
344 hardware anomalies of missing events.
346 config ARM_ARCH_TIMER_OOL_WORKAROUND
349 config FSL_ERRATUM_A008585
350 bool "Workaround for Freescale/NXP Erratum A-008585"
352 depends on ARM_ARCH_TIMER && ARM64
353 select ARM_ARCH_TIMER_OOL_WORKAROUND
355 This option enables a workaround for Freescale/NXP Erratum
356 A-008585 ("ARM generic timer may contain an erroneous
357 value"). The workaround will only be active if the
358 fsl,erratum-a008585 property is found in the timer node.
360 config HISILICON_ERRATUM_161010101
361 bool "Workaround for Hisilicon Erratum 161010101"
363 select ARM_ARCH_TIMER_OOL_WORKAROUND
364 depends on ARM_ARCH_TIMER && ARM64
366 This option enables a workaround for Hisilicon Erratum
367 161010101. The workaround will be active if the hisilicon,erratum-161010101
368 property is found in the timer node.
370 config ARM64_ERRATUM_858921
371 bool "Workaround for Cortex-A73 erratum 858921"
373 select ARM_ARCH_TIMER_OOL_WORKAROUND
374 depends on ARM_ARCH_TIMER && ARM64
376 This option enables a workaround applicable to Cortex-A73
377 (all versions), whose counter may return incorrect values.
378 The workaround will be dynamically enabled when an affected
381 config SUN50I_ERRATUM_UNKNOWN1
382 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
384 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
385 select ARM_ARCH_TIMER_OOL_WORKAROUND
387 This option enables a workaround for instability in the timer on
388 the Allwinner A64 SoC. The workaround will only be active if the
389 allwinner,erratum-unknown1 property is found in the timer node.
391 config ARM_GLOBAL_TIMER
392 bool "Support for the ARM global timer" if COMPILE_TEST
393 select TIMER_OF if OF
396 This option enables support for the ARM global timer unit.
398 config ARM_TIMER_SP804
399 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
400 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
402 select TIMER_OF if OF
404 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
406 depends on ARM_GLOBAL_TIMER
409 Use ARM global timer clock source as sched_clock.
411 config ARMV7M_SYSTICK
412 bool "Support for the ARMv7M system time" if COMPILE_TEST
413 select TIMER_OF if OF
416 This option enables support for the ARMv7M system timer unit.
419 bool "Atmel PIT support" if COMPILE_TEST
421 select TIMER_OF if OF
423 Support for the Periodic Interval Timer found on Atmel SoCs.
426 bool "Atmel ST timer support" if COMPILE_TEST
431 Support for the Atmel ST timer.
433 config ATMEL_TCB_CLKSRC
434 bool "Atmel TC Block timer driver" if COMPILE_TEST
435 depends on ARM && HAS_IOMEM
436 select TIMER_OF if OF
438 Support for Timer Counter Blocks on Atmel SoCs.
440 config CLKSRC_EXYNOS_MCT
441 bool "Exynos multi core timer driver" if COMPILE_TEST
442 depends on ARM || ARM64
444 Support for Multi Core Timer controller on Exynos SoCs.
446 config CLKSRC_SAMSUNG_PWM
447 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
450 This is a new clocksource driver for the PWM timer found in
451 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
452 for all devicetree enabled platforms. This driver will be
453 needed only on systems that do not have the Exynos MCT available.
456 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
460 Support for Freescale FlexTimer Module (FTM) timer.
466 Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
468 config OXNAS_RPS_TIMER
469 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
473 This enables support for the Oxford Semiconductor OXNAS RPS timers.
475 config SYS_SUPPORTS_SH_CMT
479 bool "Mediatek timer driver" if COMPILE_TEST
484 Support for Mediatek timer driver.
487 bool "Spreadtrum timer driver" if EXPERT
489 depends on (ARCH_SPRD || COMPILE_TEST)
493 Enables support for the Spreadtrum timer driver.
495 config SYS_SUPPORTS_SH_MTU2
498 config SYS_SUPPORTS_SH_TMU
501 config SYS_SUPPORTS_EM_STI
504 config CLKSRC_JCORE_PIT
505 bool "J-Core PIT timer driver" if COMPILE_TEST
510 This enables build of clocksource and clockevent driver for
511 the integrated PIT in the J-Core synthesizable, open source SoC.
514 bool "Renesas CMT timer driver" if COMPILE_TEST
516 default SYS_SUPPORTS_SH_CMT
518 This enables build of a clocksource and clockevent driver for
519 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
520 variants on a wide range of Mobile and Automotive SoCs from Renesas.
523 bool "Renesas MTU2 timer driver" if COMPILE_TEST
525 default SYS_SUPPORTS_SH_MTU2
527 This enables build of a clockevent driver for the Multi-Function
528 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
529 This hardware comes with 16-bit timer registers.
532 bool "Renesas OSTM timer driver" if COMPILE_TEST
536 Enables the support for the Renesas OSTM.
539 bool "Renesas TMU timer driver" if COMPILE_TEST
541 default SYS_SUPPORTS_SH_TMU
543 This enables build of a clocksource and clockevent driver for
544 the 32-bit Timer Unit (TMU) hardware available on a wide range
548 bool "Renesas STI timer driver" if COMPILE_TEST
550 default SYS_SUPPORTS_EM_STI
552 This enables build of a clocksource and clockevent driver for
553 the 48-bit System Timer (STI) hardware available on a SoCs
554 such as EMEV2 from former NEC Electronics.
557 bool "Qualcomm MSM timer" if COMPILE_TEST
561 This enables the clocksource and the per CPU clockevent driver for the
564 config CLKSRC_VERSATILE
565 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
566 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
568 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
570 This option enables clock source based on free running
571 counter available in the "System Registers" block of
572 ARM Versatile and Versatile Express reference platforms.
574 config CLKSRC_MIPS_GIC
577 select CLOCKSOURCE_WATCHDOG
580 config CLKSRC_TANGO_XTAL
581 bool "Clocksource for Tango SoC" if COMPILE_TEST
586 This enables the clocksource for Tango SoC.
589 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
593 This enables OST0 support available on PXA and SA-11x0
597 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
600 This enables the 8 bits timer for the H8300 platform.
603 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
606 This enables the 16 bits timer for the H8300 platform with the
610 bool "Clocksource for the H8300 platform" if COMPILE_TEST
613 This enables the clocksource for the H8300 platform with the
616 config CLKSRC_IMX_GPT
617 bool "Clocksource using i.MX GPT" if COMPILE_TEST
618 depends on (ARM || ARM64) && CLKDEV_LOOKUP
621 config CLKSRC_IMX_TPM
622 bool "Clocksource using i.MX TPM" if COMPILE_TEST
623 depends on (ARM || ARM64) && CLKDEV_LOOKUP
627 Enable this option to use IMX Timer/PWM Module (TPM) timer as
630 config TIMER_IMX_SYS_CTR
631 bool "i.MX system counter timer" if COMPILE_TEST
634 Enable this option to use i.MX system counter timer as a
638 bool "Low power clocksource found in the LPC" if COMPILE_TEST
639 select TIMER_OF if OF
643 Enable this option to use the Low Power controller timer
646 config ATCPIT100_TIMER
647 bool "ATCPIT100 timer driver"
648 depends on NDS32 || COMPILE_TEST
653 This option enables support for the Andestech ATCPIT100 timers.
656 bool "Timer for the RISC-V platform" if COMPILE_TEST
657 depends on GENERIC_SCHED_CLOCK && RISCV
661 This enables the per-hart timer built into all RISC-V systems, which
662 is accessed via both the SBI and the rdcycle instruction. This is
663 required for all RISC-V systems.
666 bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
667 depends on GENERIC_SCHED_CLOCK && RISCV
671 This option enables the CLINT timer for RISC-V systems. The CLINT
672 driver is usually used for NoMMU RISC-V systems.
675 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
679 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
681 csky,mptimer is not only used in SMP system, it also could be used in
682 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
685 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
690 This option enables support for gx6605s SOC's timer.
692 config MILBEAUT_TIMER
693 bool "Milbeaut timer driver" if COMPILE_TEST
699 Enables the support for Milbeaut timer driver.
702 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
704 depends on MIPS || COMPILE_TEST
705 depends on COMMON_CLK
710 Support for the timer/counter unit of the Ingenic JZ SoCs.
712 config INGENIC_SYSOST
713 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
714 depends on MIPS || COMPILE_TEST
715 depends on COMMON_CLK
720 Support for the SYSOST of the Ingenic X Series SoCs.
723 bool "Clocksource using the OST in Ingenic JZ SoCs"
724 depends on MIPS || COMPILE_TEST
725 depends on COMMON_CLK
728 Support for the Operating System Timer of the Ingenic JZ SoCs.
730 config MICROCHIP_PIT64B
731 bool "Microchip PIT64B support"
732 depends on OF || COMPILE_TEST
736 This option enables Microchip PIT64B timer for Atmel
737 based system. It supports the oneshot, the periodic
738 modes and high resolution. It is used as a clocksource