1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "Clock Source drivers"
3 depends on GENERIC_CLOCKEVENTS
30 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
36 bool "BCM2835 timer driver" if COMPILE_TEST
39 Enables the support for the BCM2835 timer driver.
42 bool "BCM mobile timer driver" if COMPILE_TEST
45 Enables the support for the BCM Kona mobile timer driver.
48 bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
50 Enables the support for the TI DaVinci timer driver.
52 config DIGICOLOR_TIMER
53 bool "Digicolor timer driver" if COMPILE_TEST
57 Enables the support for the digicolor timer driver.
60 bool "DW APB timer driver" if COMPILE_TEST
62 Enables the support for the dw_apb timer.
64 config DW_APB_TIMER_OF
70 bool "Faraday Technology timer driver" if COMPILE_TEST
76 Enables support for the Faraday Technology timer block
80 bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
85 Enables support for the Intel XScale IXP4xx SoC timer.
88 bool "Rockchip timer driver" if COMPILE_TEST
89 depends on ARM || ARM64
93 Enables the support for the rockchip timer driver.
95 config ARMADA_370_XP_TIMER
96 bool "Armada 370 and XP timer driver" if COMPILE_TEST
101 Enables the support for the Armada 370 and XP timer driver.
104 bool "Meson6 timer driver" if COMPILE_TEST
107 Enables the support for the Meson6 timer driver.
110 bool "Orion timer driver" if COMPILE_TEST
115 Enables the support for the Orion timer driver
118 bool "Owl timer driver" if COMPILE_TEST
121 Enables the support for the Actions Semi Owl timer driver.
124 bool "RDA timer driver" if COMPILE_TEST
125 depends on GENERIC_CLOCKEVENTS
129 Enables the support for the RDA Micro timer driver.
132 bool "Sun4i timer driver" if COMPILE_TEST
137 Enables support for the Sun4i timer.
140 bool "Sun5i timer driver" if COMPILE_TEST
142 depends on COMMON_CLK
144 Enables support the Sun5i timer.
147 bool "Tegra timer driver" if COMPILE_TEST
150 depends on ARCH_TEGRA || COMPILE_TEST
152 Enables support for the Tegra driver.
155 bool "VT8500 timer driver" if COMPILE_TEST
158 Enables support for the VT8500 driver.
161 bool "NPCM7xx timer driver" if COMPILE_TEST
166 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
167 While TIMER0 serves as clockevent and TIMER1 serves as clocksource.
169 config CADENCE_TTC_TIMER
170 bool "Cadence TTC timer driver" if COMPILE_TEST
171 depends on COMMON_CLK
173 Enables support for the cadence ttc driver.
176 bool "ASM9260 timer driver" if COMPILE_TEST
180 Enables support for the ASM9260 timer.
182 config CLKSRC_NOMADIK_MTU
183 bool "Nomakdik clocksource driver" if COMPILE_TEST
187 Support for Multi Timer Unit. MTU provides access
188 to multiple interrupt generating programmable
189 32-bit free running decrementing counters.
191 config CLKSRC_DBX500_PRCMU
192 bool "Clocksource PRCMU Timer" if COMPILE_TEST
195 Use the always on PRCMU Timer as clocksource
197 config CLPS711X_TIMER
198 bool "Cirrus logic timer driver" if COMPILE_TEST
201 Enables support for the Cirrus Logic PS711 timer.
204 bool "Atlas7 timer driver" if COMPILE_TEST
207 Enables support for the Atlas7 timer.
210 bool "Mxs timer driver" if COMPILE_TEST
214 Enables support for the Mxs timer.
217 bool "Prima2 timer driver" if COMPILE_TEST
220 Enables support for the Prima2 timer.
223 bool "U300 timer driver" if COMPILE_TEST
227 Enables support for the U300 timer.
230 bool "NSpire timer driver" if COMPILE_TEST
233 Enables support for the Nspire timer.
235 config KEYSTONE_TIMER
236 bool "Keystone timer driver" if COMPILE_TEST
237 depends on ARM || ARM64
240 Enables support for the Keystone timer.
242 config INTEGRATOR_AP_TIMER
243 bool "Integrator-ap timer driver" if COMPILE_TEST
246 Enables support for the Integrator-ap timer.
249 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
250 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
254 Support to use the timers of EFM32 SoCs as clock source and clock
257 config CLKSRC_LPC32XX
258 bool "Clocksource for LPC32XX" if COMPILE_TEST
264 Support for the LPC32XX clocksource.
266 config CLKSRC_PISTACHIO
267 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
271 Enables the clocksource for the Pistachio SoC.
274 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
275 depends on GENERIC_SCHED_CLOCK
276 select TIMER_OF if OF
278 This option enables support for Texas Instruments 32.768 Hz clocksource
279 available on many OMAP-like platforms.
282 bool "NPS400 clocksource driver" if COMPILE_TEST
283 depends on !PHYS_ADDR_T_64BIT
285 select TIMER_OF if OF
287 NPS400 clocksource support.
288 Got 64 bit counter with update rate up to 1000MHz.
289 This counter is accessed via couple of 32 bit memory mapped registers.
292 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
293 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
298 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
299 depends on GENERIC_SCHED_CLOCK
304 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
305 depends on GENERIC_SCHED_CLOCK
308 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
309 (ARC700 as well as ARC HS38).
310 TIMER0 serves as clockevent while TIMER1 provides clocksource
312 config ARC_TIMERS_64BIT
313 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
314 depends on ARC_TIMERS
317 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
318 RTC is implemented inside the core, while GFRC sits outside the core in
319 ARConnect IP block. Driver automatically picks one of them for clocksource
322 config ARM_ARCH_TIMER
324 select TIMER_OF if OF
325 select TIMER_ACPI if ACPI
327 config ARM_ARCH_TIMER_EVTSTREAM
328 bool "Enable ARM architected timer event stream generation by default"
329 default y if ARM_ARCH_TIMER
330 depends on ARM_ARCH_TIMER
332 This option enables support by default for event stream generation
333 based on the ARM architected timer. It is used for waking up CPUs
334 executing the wfe instruction at a frequency represented as a
335 power-of-2 divisor of the clock rate. The behaviour can also be
336 overridden on the command line using the
337 clocksource.arm_arch_timer.evtstream parameter.
338 The main use of the event stream is wfe-based timeouts of userspace
339 locking implementations. It might also be useful for imposing timeout
340 on wfe to safeguard against any programming errors in case an expected
341 event is not generated.
342 This must be disabled for hardware validation purposes to detect any
343 hardware anomalies of missing events.
345 config ARM_ARCH_TIMER_OOL_WORKAROUND
348 config FSL_ERRATUM_A008585
349 bool "Workaround for Freescale/NXP Erratum A-008585"
351 depends on ARM_ARCH_TIMER && ARM64
352 select ARM_ARCH_TIMER_OOL_WORKAROUND
354 This option enables a workaround for Freescale/NXP Erratum
355 A-008585 ("ARM generic timer may contain an erroneous
356 value"). The workaround will only be active if the
357 fsl,erratum-a008585 property is found in the timer node.
359 config HISILICON_ERRATUM_161010101
360 bool "Workaround for Hisilicon Erratum 161010101"
362 select ARM_ARCH_TIMER_OOL_WORKAROUND
363 depends on ARM_ARCH_TIMER && ARM64
365 This option enables a workaround for Hisilicon Erratum
366 161010101. The workaround will be active if the hisilicon,erratum-161010101
367 property is found in the timer node.
369 config ARM64_ERRATUM_858921
370 bool "Workaround for Cortex-A73 erratum 858921"
372 select ARM_ARCH_TIMER_OOL_WORKAROUND
373 depends on ARM_ARCH_TIMER && ARM64
375 This option enables a workaround applicable to Cortex-A73
376 (all versions), whose counter may return incorrect values.
377 The workaround will be dynamically enabled when an affected
380 config SUN50I_ERRATUM_UNKNOWN1
381 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
383 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
384 select ARM_ARCH_TIMER_OOL_WORKAROUND
386 This option enables a workaround for instability in the timer on
387 the Allwinner A64 SoC. The workaround will only be active if the
388 allwinner,erratum-unknown1 property is found in the timer node.
390 config ARM_GLOBAL_TIMER
391 bool "Support for the ARM global timer" if COMPILE_TEST
392 select TIMER_OF if OF
395 This options enables support for the ARM global timer unit
397 config ARM_TIMER_SP804
398 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
399 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
401 select TIMER_OF if OF
403 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
405 depends on ARM_GLOBAL_TIMER
408 Use ARM global timer clock source as sched_clock
410 config ARMV7M_SYSTICK
411 bool "Support for the ARMv7M system time" if COMPILE_TEST
412 select TIMER_OF if OF
415 This options enables support for the ARMv7M system timer unit
418 bool "Atmel PIT support" if COMPILE_TEST
420 select TIMER_OF if OF
422 Support for the Periodic Interval Timer found on Atmel SoCs.
425 bool "Atmel ST timer support" if COMPILE_TEST
430 Support for the Atmel ST timer.
432 config ATMEL_TCB_CLKSRC
433 bool "Atmel TC Block timer driver" if COMPILE_TEST
434 depends on ARM && HAS_IOMEM
435 select TIMER_OF if OF
437 Support for Timer Counter Blocks on Atmel SoCs.
439 config CLKSRC_EXYNOS_MCT
440 bool "Exynos multi core timer driver" if COMPILE_TEST
441 depends on ARM || ARM64
443 Support for Multi Core Timer controller on Exynos SoCs.
445 config CLKSRC_SAMSUNG_PWM
446 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
449 This is a new clocksource driver for the PWM timer found in
450 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
451 for all devicetree enabled platforms. This driver will be
452 needed only on systems that do not have the Exynos MCT available.
455 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
459 Support for Freescale FlexTimer Module (FTM) timer.
465 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
467 config OXNAS_RPS_TIMER
468 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
472 This enables support for the Oxford Semiconductor OXNAS RPS timers.
474 config SYS_SUPPORTS_SH_CMT
478 bool "Mediatek timer driver" if COMPILE_TEST
483 Support for Mediatek timer driver.
486 bool "Spreadtrum timer driver" if EXPERT
488 depends on (ARCH_SPRD || COMPILE_TEST)
492 Enables support for the Spreadtrum timer driver.
494 config SYS_SUPPORTS_SH_MTU2
497 config SYS_SUPPORTS_SH_TMU
500 config SYS_SUPPORTS_EM_STI
503 config CLKSRC_JCORE_PIT
504 bool "J-Core PIT timer driver" if COMPILE_TEST
509 This enables build of clocksource and clockevent driver for
510 the integrated PIT in the J-Core synthesizable, open source SoC.
513 bool "Renesas CMT timer driver" if COMPILE_TEST
515 default SYS_SUPPORTS_SH_CMT
517 This enables build of a clocksource and clockevent driver for
518 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
519 variants on a wide range of Mobile and Automotive SoCs from Renesas.
522 bool "Renesas MTU2 timer driver" if COMPILE_TEST
524 default SYS_SUPPORTS_SH_MTU2
526 This enables build of a clockevent driver for the Multi-Function
527 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
528 This hardware comes with 16 bit-timer registers.
531 bool "Renesas OSTM timer driver" if COMPILE_TEST
534 Enables the support for the Renesas OSTM.
537 bool "Renesas TMU timer driver" if COMPILE_TEST
539 default SYS_SUPPORTS_SH_TMU
541 This enables build of a clocksource and clockevent driver for
542 the 32-bit Timer Unit (TMU) hardware available on a wide range
546 bool "Renesas STI timer driver" if COMPILE_TEST
548 default SYS_SUPPORTS_EM_STI
550 This enables build of a clocksource and clockevent driver for
551 the 48-bit System Timer (STI) hardware available on a SoCs
552 such as EMEV2 from former NEC Electronics.
555 bool "Qualcomm MSM timer" if COMPILE_TEST
559 This enables the clocksource and the per CPU clockevent driver for the
562 config CLKSRC_VERSATILE
563 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
564 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
566 default y if MFD_VEXPRESS_SYSREG
568 This option enables clock source based on free running
569 counter available in the "System Registers" block of
570 ARM Versatile, RealView and Versatile Express reference
573 config CLKSRC_MIPS_GIC
578 config CLKSRC_TANGO_XTAL
579 bool "Clocksource for Tango SoC" if COMPILE_TEST
584 This enables the clocksource for Tango SoC
587 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
591 This enables OST0 support available on PXA and SA-11x0
595 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
598 This enables the 8 bits timer for the H8300 platform.
601 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
604 This enables the 16 bits timer for the H8300 platform with the
608 bool "Clocksource for the H8300 platform" if COMPILE_TEST
611 This enables the clocksource for the H8300 platform with the
614 config CLKSRC_IMX_GPT
615 bool "Clocksource using i.MX GPT" if COMPILE_TEST
616 depends on (ARM || ARM64) && CLKDEV_LOOKUP
619 config CLKSRC_IMX_TPM
620 bool "Clocksource using i.MX TPM" if COMPILE_TEST
621 depends on ARM && CLKDEV_LOOKUP
624 Enable this option to use IMX Timer/PWM Module (TPM) timer as
627 config TIMER_IMX_SYS_CTR
628 bool "i.MX system counter timer" if COMPILE_TEST
631 Enable this option to use i.MX system counter timer as a
635 bool "Low power clocksource found in the LPC" if COMPILE_TEST
636 select TIMER_OF if OF
640 Enable this option to use the Low Power controller timer
643 config ATCPIT100_TIMER
644 bool "ATCPIT100 timer driver"
645 depends on NDS32 || COMPILE_TEST
650 This option enables support for the Andestech ATCPIT100 timers.
653 bool "Timer for the RISC-V platform"
654 depends on GENERIC_SCHED_CLOCK && RISCV
659 This enables the per-hart timer built into all RISC-V systems, which
660 is accessed via both the SBI and the rdcycle instruction. This is
661 required for all RISC-V systems.
664 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
668 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
670 csky,mptimer is not only used in SMP system, it also could be used
671 single core system. It's not a mmio reg and it use mtcr/mfcr instruction.
674 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
679 This option enables support for gx6605s SOC's timer.
681 config MILBEAUT_TIMER
682 bool "Milbeaut timer driver" if COMPILE_TEST
688 Enables the support for Milbeaut timer driver.
691 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
693 depends on MIPS || COMPILE_TEST
694 depends on COMMON_CLK
699 Support for the timer/counter unit of the Ingenic JZ SoCs.