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.
46 config DIGICOLOR_TIMER
47 bool "Digicolor timer driver" if COMPILE_TEST
51 Enables the support for the digicolor timer driver.
54 bool "DW APB timer driver" if COMPILE_TEST
56 Enables the support for the dw_apb timer.
58 config DW_APB_TIMER_OF
64 bool "Faraday Technology timer driver" if COMPILE_TEST
70 Enables support for the Faraday Technology timer block
74 bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
78 Enables support for the Intel XScale IXP4xx SoC timer.
81 bool "Rockchip timer driver" if COMPILE_TEST
82 depends on ARM || ARM64
86 Enables the support for the rockchip timer driver.
88 config ARMADA_370_XP_TIMER
89 bool "Armada 370 and XP timer driver" if COMPILE_TEST
94 Enables the support for the Armada 370 and XP timer driver.
97 bool "Meson6 timer driver" if COMPILE_TEST
100 Enables the support for the Meson6 timer driver.
103 bool "Orion timer driver" if COMPILE_TEST
108 Enables the support for the Orion timer driver
111 bool "Owl timer driver" if COMPILE_TEST
114 Enables the support for the Actions Semi Owl timer driver.
117 bool "RDA timer driver" if COMPILE_TEST
118 depends on GENERIC_CLOCKEVENTS
122 Enables the support for the RDA Micro timer driver.
125 bool "Sun4i timer driver" if COMPILE_TEST
130 Enables support for the Sun4i timer.
133 bool "Sun5i timer driver" if COMPILE_TEST
135 depends on COMMON_CLK
137 Enables support the Sun5i timer.
140 bool "Tegra timer driver" if COMPILE_TEST
143 depends on ARM || ARM64
145 Enables support for the Tegra driver.
148 bool "VT8500 timer driver" if COMPILE_TEST
151 Enables support for the VT8500 driver.
154 bool "NPCM7xx timer driver" if COMPILE_TEST
159 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
160 While TIMER0 serves as clockevent and TIMER1 serves as clocksource.
162 config CADENCE_TTC_TIMER
163 bool "Cadence TTC timer driver" if COMPILE_TEST
164 depends on COMMON_CLK
166 Enables support for the cadence ttc driver.
169 bool "ASM9260 timer driver" if COMPILE_TEST
173 Enables support for the ASM9260 timer.
175 config CLKSRC_NOMADIK_MTU
176 bool "Nomakdik clocksource driver" if COMPILE_TEST
180 Support for Multi Timer Unit. MTU provides access
181 to multiple interrupt generating programmable
182 32-bit free running decrementing counters.
184 config CLKSRC_DBX500_PRCMU
185 bool "Clocksource PRCMU Timer" if COMPILE_TEST
188 Use the always on PRCMU Timer as clocksource
190 config CLPS711X_TIMER
191 bool "Cirrus logic timer driver" if COMPILE_TEST
194 Enables support for the Cirrus Logic PS711 timer.
197 bool "Atlas7 timer driver" if COMPILE_TEST
200 Enables support for the Atlas7 timer.
203 bool "Mxs timer driver" if COMPILE_TEST
207 Enables support for the Mxs timer.
210 bool "Prima2 timer driver" if COMPILE_TEST
213 Enables support for the Prima2 timer.
216 bool "U300 timer driver" if COMPILE_TEST
220 Enables support for the U300 timer.
223 bool "NSpire timer driver" if COMPILE_TEST
226 Enables support for the Nspire timer.
228 config KEYSTONE_TIMER
229 bool "Keystone timer driver" if COMPILE_TEST
230 depends on ARM || ARM64
233 Enables support for the Keystone timer.
235 config INTEGRATOR_AP_TIMER
236 bool "Integrator-ap timer driver" if COMPILE_TEST
239 Enables support for the Integrator-ap timer.
242 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
243 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
247 Support to use the timers of EFM32 SoCs as clock source and clock
250 config CLKSRC_LPC32XX
251 bool "Clocksource for LPC32XX" if COMPILE_TEST
257 Support for the LPC32XX clocksource.
259 config CLKSRC_PISTACHIO
260 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
264 Enables the clocksource for the Pistachio SoC.
267 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
268 depends on GENERIC_SCHED_CLOCK
269 select TIMER_OF if OF
271 This option enables support for Texas Instruments 32.768 Hz clocksource
272 available on many OMAP-like platforms.
275 bool "NPS400 clocksource driver" if COMPILE_TEST
276 depends on !PHYS_ADDR_T_64BIT
278 select TIMER_OF if OF
280 NPS400 clocksource support.
281 Got 64 bit counter with update rate up to 1000MHz.
282 This counter is accessed via couple of 32 bit memory mapped registers.
285 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
286 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
291 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
292 depends on GENERIC_SCHED_CLOCK
297 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
298 depends on GENERIC_SCHED_CLOCK
301 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
302 (ARC700 as well as ARC HS38).
303 TIMER0 serves as clockevent while TIMER1 provides clocksource
305 config ARC_TIMERS_64BIT
306 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
307 depends on ARC_TIMERS
310 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
311 RTC is implemented inside the core, while GFRC sits outside the core in
312 ARConnect IP block. Driver automatically picks one of them for clocksource
315 config ARM_ARCH_TIMER
317 select TIMER_OF if OF
318 select TIMER_ACPI if ACPI
320 config ARM_ARCH_TIMER_EVTSTREAM
321 bool "Enable ARM architected timer event stream generation by default"
322 default y if ARM_ARCH_TIMER
323 depends on ARM_ARCH_TIMER
325 This option enables support by default for event stream generation
326 based on the ARM architected timer. It is used for waking up CPUs
327 executing the wfe instruction at a frequency represented as a
328 power-of-2 divisor of the clock rate. The behaviour can also be
329 overridden on the command line using the
330 clocksource.arm_arch_timer.evtstream parameter.
331 The main use of the event stream is wfe-based timeouts of userspace
332 locking implementations. It might also be useful for imposing timeout
333 on wfe to safeguard against any programming errors in case an expected
334 event is not generated.
335 This must be disabled for hardware validation purposes to detect any
336 hardware anomalies of missing events.
338 config ARM_ARCH_TIMER_OOL_WORKAROUND
341 config FSL_ERRATUM_A008585
342 bool "Workaround for Freescale/NXP Erratum A-008585"
344 depends on ARM_ARCH_TIMER && ARM64
345 select ARM_ARCH_TIMER_OOL_WORKAROUND
347 This option enables a workaround for Freescale/NXP Erratum
348 A-008585 ("ARM generic timer may contain an erroneous
349 value"). The workaround will only be active if the
350 fsl,erratum-a008585 property is found in the timer node.
352 config HISILICON_ERRATUM_161010101
353 bool "Workaround for Hisilicon Erratum 161010101"
355 select ARM_ARCH_TIMER_OOL_WORKAROUND
356 depends on ARM_ARCH_TIMER && ARM64
358 This option enables a workaround for Hisilicon Erratum
359 161010101. The workaround will be active if the hisilicon,erratum-161010101
360 property is found in the timer node.
362 config ARM64_ERRATUM_858921
363 bool "Workaround for Cortex-A73 erratum 858921"
365 select ARM_ARCH_TIMER_OOL_WORKAROUND
366 depends on ARM_ARCH_TIMER && ARM64
368 This option enables a workaround applicable to Cortex-A73
369 (all versions), whose counter may return incorrect values.
370 The workaround will be dynamically enabled when an affected
373 config SUN50I_ERRATUM_UNKNOWN1
374 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
376 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
377 select ARM_ARCH_TIMER_OOL_WORKAROUND
379 This option enables a workaround for instability in the timer on
380 the Allwinner A64 SoC. The workaround will only be active if the
381 allwinner,erratum-unknown1 property is found in the timer node.
383 config ARM_GLOBAL_TIMER
384 bool "Support for the ARM global timer" if COMPILE_TEST
385 select TIMER_OF if OF
388 This options enables support for the ARM global timer unit
390 config ARM_TIMER_SP804
391 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
392 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
394 select TIMER_OF if OF
396 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
398 depends on ARM_GLOBAL_TIMER
401 Use ARM global timer clock source as sched_clock
403 config ARMV7M_SYSTICK
404 bool "Support for the ARMv7M system time" if COMPILE_TEST
405 select TIMER_OF if OF
408 This options enables support for the ARMv7M system timer unit
411 bool "Atmel PIT support" if COMPILE_TEST
413 select TIMER_OF if OF
415 Support for the Periodic Interval Timer found on Atmel SoCs.
418 bool "Atmel ST timer support" if COMPILE_TEST
423 Support for the Atmel ST timer.
425 config ATMEL_TCB_CLKSRC
426 bool "Atmel TC Block timer driver" if COMPILE_TEST
428 select TIMER_OF if OF
430 Support for Timer Counter Blocks on Atmel SoCs.
432 config CLKSRC_EXYNOS_MCT
433 bool "Exynos multi core timer driver" if COMPILE_TEST
434 depends on ARM || ARM64
436 Support for Multi Core Timer controller on Exynos SoCs.
438 config CLKSRC_SAMSUNG_PWM
439 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
442 This is a new clocksource driver for the PWM timer found in
443 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
444 for all devicetree enabled platforms. This driver will be
445 needed only on systems that do not have the Exynos MCT available.
448 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
452 Support for Freescale FlexTimer Module (FTM) timer.
458 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
460 config OXNAS_RPS_TIMER
461 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
465 This enables support for the Oxford Semiconductor OXNAS RPS timers.
467 config SYS_SUPPORTS_SH_CMT
471 bool "Mediatek timer driver" if COMPILE_TEST
476 Support for Mediatek timer driver.
479 bool "Spreadtrum timer driver" if EXPERT
481 depends on (ARCH_SPRD || COMPILE_TEST)
485 Enables support for the Spreadtrum timer driver.
487 config SYS_SUPPORTS_SH_MTU2
490 config SYS_SUPPORTS_SH_TMU
493 config SYS_SUPPORTS_EM_STI
496 config CLKSRC_JCORE_PIT
497 bool "J-Core PIT timer driver" if COMPILE_TEST
502 This enables build of clocksource and clockevent driver for
503 the integrated PIT in the J-Core synthesizable, open source SoC.
506 bool "Renesas CMT timer driver" if COMPILE_TEST
508 default SYS_SUPPORTS_SH_CMT
510 This enables build of a clocksource and clockevent driver for
511 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
512 variants on a wide range of Mobile and Automotive SoCs from Renesas.
515 bool "Renesas MTU2 timer driver" if COMPILE_TEST
517 default SYS_SUPPORTS_SH_MTU2
519 This enables build of a clockevent driver for the Multi-Function
520 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
521 This hardware comes with 16 bit-timer registers.
524 bool "Renesas OSTM timer driver" if COMPILE_TEST
527 Enables the support for the Renesas OSTM.
530 bool "Renesas TMU timer driver" if COMPILE_TEST
532 default SYS_SUPPORTS_SH_TMU
534 This enables build of a clocksource and clockevent driver for
535 the 32-bit Timer Unit (TMU) hardware available on a wide range
539 bool "Renesas STI timer driver" if COMPILE_TEST
541 default SYS_SUPPORTS_EM_STI
543 This enables build of a clocksource and clockevent driver for
544 the 48-bit System Timer (STI) hardware available on a SoCs
545 such as EMEV2 from former NEC Electronics.
548 bool "Qualcomm MSM timer" if COMPILE_TEST
552 This enables the clocksource and the per CPU clockevent driver for the
555 config CLKSRC_VERSATILE
556 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
557 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
559 default y if MFD_VEXPRESS_SYSREG
561 This option enables clock source based on free running
562 counter available in the "System Registers" block of
563 ARM Versatile, RealView and Versatile Express reference
566 config CLKSRC_MIPS_GIC
571 config CLKSRC_TANGO_XTAL
572 bool "Clocksource for Tango SoC" if COMPILE_TEST
577 This enables the clocksource for Tango SoC
580 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
584 This enables OST0 support available on PXA and SA-11x0
588 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
591 This enables the 8 bits timer for the H8300 platform.
594 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
597 This enables the 16 bits timer for the H8300 platform with the
601 bool "Clocksource for the H8300 platform" if COMPILE_TEST
604 This enables the clocksource for the H8300 platform with the
607 config CLKSRC_IMX_GPT
608 bool "Clocksource using i.MX GPT" if COMPILE_TEST
609 depends on (ARM || ARM64) && CLKDEV_LOOKUP
612 config CLKSRC_IMX_TPM
613 bool "Clocksource using i.MX TPM" if COMPILE_TEST
614 depends on ARM && CLKDEV_LOOKUP
617 Enable this option to use IMX Timer/PWM Module (TPM) timer as
621 bool "Low power clocksource found in the LPC" if COMPILE_TEST
622 select TIMER_OF if OF
626 Enable this option to use the Low Power controller timer
629 config ATCPIT100_TIMER
630 bool "ATCPIT100 timer driver"
631 depends on NDS32 || COMPILE_TEST
636 This option enables support for the Andestech ATCPIT100 timers.
639 bool "Timer for the RISC-V platform"
640 depends on GENERIC_SCHED_CLOCK && RISCV
645 This enables the per-hart timer built into all RISC-V systems, which
646 is accessed via both the SBI and the rdcycle instruction. This is
647 required for all RISC-V systems.
650 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
654 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
656 csky,mptimer is not only used in SMP system, it also could be used
657 single core system. It's not a mmio reg and it use mtcr/mfcr instruction.
660 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
665 This option enables support for gx6605s SOC's timer.
667 config MILBEAUT_TIMER
668 bool "Milbeaut timer driver" if COMPILE_TEST
674 Enables the support for Milbeaut timer driver.