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
84 Enables support for the Intel XScale IXP4xx SoC timer.
87 bool "Rockchip timer driver" if COMPILE_TEST
88 depends on ARM || ARM64
92 Enables the support for the Rockchip timer driver.
94 config ARMADA_370_XP_TIMER
95 bool "Armada 370 and XP timer driver" if COMPILE_TEST
100 Enables the support for the Armada 370 and XP timer driver.
103 bool "Meson6 timer driver" if COMPILE_TEST
106 Enables the support for the Meson6 timer driver.
109 bool "Orion timer driver" if COMPILE_TEST
114 Enables the support for the Orion timer driver
117 bool "Owl timer driver" if COMPILE_TEST
120 Enables the support for the Actions Semi Owl timer driver.
123 bool "RDA timer driver" if COMPILE_TEST
127 Enables the support for the RDA Micro timer driver.
130 bool "Sun4i timer driver" if COMPILE_TEST
135 Enables support for the Sun4i timer.
138 bool "Sun5i timer driver" if COMPILE_TEST
140 depends on COMMON_CLK
142 Enables support the Sun5i timer.
145 bool "Tegra timer driver" if COMPILE_TEST
148 depends on ARCH_TEGRA || COMPILE_TEST
150 Enables support for the Tegra driver.
153 bool "VT8500 timer driver" if COMPILE_TEST
156 Enables support for the VT8500 driver.
159 bool "NPCM7xx timer driver" if COMPILE_TEST
164 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
165 where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
167 config CADENCE_TTC_TIMER
168 bool "Cadence TTC timer driver" if COMPILE_TEST
169 depends on COMMON_CLK
171 Enables support for the Cadence TTC driver.
174 bool "ASM9260 timer driver" if COMPILE_TEST
178 Enables support for the ASM9260 timer.
180 config CLKSRC_NOMADIK_MTU
181 bool "Nomakdik clocksource driver" if COMPILE_TEST
185 Support for Multi Timer Unit. MTU provides access
186 to multiple interrupt generating programmable
187 32-bit free running decrementing counters.
189 config CLKSRC_DBX500_PRCMU
190 bool "Clocksource PRCMU Timer" if COMPILE_TEST
193 Use the always on PRCMU Timer as clocksource.
195 config CLPS711X_TIMER
196 bool "Cirrus Logic timer driver" if COMPILE_TEST
199 Enables support for the Cirrus Logic PS711 timer.
202 bool "MXS timer driver" if COMPILE_TEST
206 Enables support for the MXS timer.
209 bool "NSpire timer driver" if COMPILE_TEST
212 Enables support for the Nspire timer.
214 config KEYSTONE_TIMER
215 bool "Keystone timer driver" if COMPILE_TEST
216 depends on ARM || ARM64
219 Enables support for the Keystone timer.
221 config INTEGRATOR_AP_TIMER
222 bool "Integrator-AP timer driver" if COMPILE_TEST
225 Enables support for the Integrator-AP timer.
227 config CLKSRC_LPC32XX
228 bool "Clocksource for LPC32XX" if COMPILE_TEST
234 Support for the LPC32XX clocksource.
236 config CLKSRC_PISTACHIO
237 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
241 Enables the clocksource for the Pistachio SoC.
244 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
245 depends on GENERIC_SCHED_CLOCK
246 select TIMER_OF if OF
248 This option enables support for Texas Instruments 32.768 Hz clocksource
249 available on many OMAP-like platforms.
252 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
253 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
257 config CLKSRC_STM32_LP
258 bool "Low power clocksource for STM32 SoCs"
259 depends on MFD_STM32_LPTIMER || COMPILE_TEST
262 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
263 depends on GENERIC_SCHED_CLOCK
268 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
269 depends on GENERIC_SCHED_CLOCK
272 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
273 (ARC700 as well as ARC HS38).
274 TIMER0 serves as clockevent while TIMER1 provides clocksource.
276 config ARC_TIMERS_64BIT
277 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
278 depends on ARC_TIMERS
281 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
282 RTC is implemented inside the core, while GFRC sits outside the core in
283 ARConnect IP block. Driver automatically picks one of them for clocksource
286 config ARM_ARCH_TIMER
288 select TIMER_OF if OF
289 select TIMER_ACPI if ACPI
291 config ARM_ARCH_TIMER_EVTSTREAM
292 bool "Enable ARM architected timer event stream generation by default"
293 default y if ARM_ARCH_TIMER
294 depends on ARM_ARCH_TIMER
296 This option enables support by default for event stream generation
297 based on the ARM architected timer. It is used for waking up CPUs
298 executing the wfe instruction at a frequency represented as a
299 power-of-2 divisor of the clock rate. The behaviour can also be
300 overridden on the command line using the
301 clocksource.arm_arch_timer.evtstream parameter.
302 The main use of the event stream is wfe-based timeouts of userspace
303 locking implementations. It might also be useful for imposing timeout
304 on wfe to safeguard against any programming errors in case an expected
305 event is not generated.
306 This must be disabled for hardware validation purposes to detect any
307 hardware anomalies of missing events.
309 config ARM_ARCH_TIMER_OOL_WORKAROUND
312 config FSL_ERRATUM_A008585
313 bool "Workaround for Freescale/NXP Erratum A-008585"
315 depends on ARM_ARCH_TIMER && ARM64
316 select ARM_ARCH_TIMER_OOL_WORKAROUND
318 This option enables a workaround for Freescale/NXP Erratum
319 A-008585 ("ARM generic timer may contain an erroneous
320 value"). The workaround will only be active if the
321 fsl,erratum-a008585 property is found in the timer node.
323 config HISILICON_ERRATUM_161010101
324 bool "Workaround for Hisilicon Erratum 161010101"
326 select ARM_ARCH_TIMER_OOL_WORKAROUND
327 depends on ARM_ARCH_TIMER && ARM64
329 This option enables a workaround for Hisilicon Erratum
330 161010101. The workaround will be active if the hisilicon,erratum-161010101
331 property is found in the timer node.
333 config ARM64_ERRATUM_858921
334 bool "Workaround for Cortex-A73 erratum 858921"
336 select ARM_ARCH_TIMER_OOL_WORKAROUND
337 depends on ARM_ARCH_TIMER && ARM64
339 This option enables a workaround applicable to Cortex-A73
340 (all versions), whose counter may return incorrect values.
341 The workaround will be dynamically enabled when an affected
344 config SUN50I_ERRATUM_UNKNOWN1
345 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
347 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
348 select ARM_ARCH_TIMER_OOL_WORKAROUND
350 This option enables a workaround for instability in the timer on
351 the Allwinner A64 SoC. The workaround will only be active if the
352 allwinner,erratum-unknown1 property is found in the timer node.
354 config ARM_GLOBAL_TIMER
355 bool "Support for the ARM global timer" if COMPILE_TEST
356 select TIMER_OF if OF
359 This option enables support for the ARM global timer unit.
361 config ARM_TIMER_SP804
362 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
363 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
365 select TIMER_OF if OF
367 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
369 depends on ARM_GLOBAL_TIMER
372 Use ARM global timer clock source as sched_clock.
374 config ARMV7M_SYSTICK
375 bool "Support for the ARMv7M system time" if COMPILE_TEST
376 select TIMER_OF if OF
379 This option enables support for the ARMv7M system timer unit.
382 bool "Atmel PIT support" if COMPILE_TEST
384 select TIMER_OF if OF
386 Support for the Periodic Interval Timer found on Atmel SoCs.
389 bool "Atmel ST timer support" if COMPILE_TEST
394 Support for the Atmel ST timer.
396 config ATMEL_TCB_CLKSRC
397 bool "Atmel TC Block timer driver" if COMPILE_TEST
398 depends on ARM && HAS_IOMEM
399 select TIMER_OF if OF
401 Support for Timer Counter Blocks on Atmel SoCs.
403 config CLKSRC_EXYNOS_MCT
404 bool "Exynos multi core timer driver" if COMPILE_TEST
405 depends on ARM || ARM64
407 Support for Multi Core Timer controller on Exynos SoCs.
409 config CLKSRC_SAMSUNG_PWM
410 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
413 This is a new clocksource driver for the PWM timer found in
414 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
415 for all devicetree enabled platforms. This driver will be
416 needed only on systems that do not have the Exynos MCT available.
419 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
423 Support for Freescale FlexTimer Module (FTM) timer.
429 Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
431 config OXNAS_RPS_TIMER
432 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
436 This enables support for the Oxford Semiconductor OXNAS RPS timers.
438 config SYS_SUPPORTS_SH_CMT
442 bool "Mediatek timer driver" if COMPILE_TEST
447 Support for Mediatek timer driver.
450 bool "Spreadtrum timer driver" if EXPERT
452 depends on (ARCH_SPRD || COMPILE_TEST)
456 Enables support for the Spreadtrum timer driver.
458 config SYS_SUPPORTS_SH_MTU2
461 config SYS_SUPPORTS_SH_TMU
464 config SYS_SUPPORTS_EM_STI
467 config CLKSRC_JCORE_PIT
468 bool "J-Core PIT timer driver" if COMPILE_TEST
473 This enables build of clocksource and clockevent driver for
474 the integrated PIT in the J-Core synthesizable, open source SoC.
477 bool "Renesas CMT timer driver" if COMPILE_TEST
479 default SYS_SUPPORTS_SH_CMT
481 This enables build of a clocksource and clockevent driver for
482 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
483 variants on a wide range of Mobile and Automotive SoCs from Renesas.
486 bool "Renesas MTU2 timer driver" if COMPILE_TEST
488 default SYS_SUPPORTS_SH_MTU2
490 This enables build of a clockevent driver for the Multi-Function
491 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
492 This hardware comes with 16-bit timer registers.
495 bool "Renesas OSTM timer driver" if COMPILE_TEST
499 Enables the support for the Renesas OSTM.
502 bool "Renesas TMU timer driver" if COMPILE_TEST
504 default SYS_SUPPORTS_SH_TMU
506 This enables build of a clocksource and clockevent driver for
507 the 32-bit Timer Unit (TMU) hardware available on a wide range
511 bool "Renesas STI timer driver" if COMPILE_TEST
513 default SYS_SUPPORTS_EM_STI
515 This enables build of a clocksource and clockevent driver for
516 the 48-bit System Timer (STI) hardware available on a SoCs
517 such as EMEV2 from former NEC Electronics.
520 bool "Qualcomm MSM timer" if COMPILE_TEST
524 This enables the clocksource and the per CPU clockevent driver for the
527 config CLKSRC_VERSATILE
528 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
529 depends on GENERIC_SCHED_CLOCK
531 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
533 This option enables clock source based on free running
534 counter available in the "System Registers" block of
535 ARM Versatile and Versatile Express reference platforms.
537 config CLKSRC_MIPS_GIC
540 select CLOCKSOURCE_WATCHDOG
544 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
548 This enables OST0 support available on PXA and SA-11x0
552 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
555 This enables the 8 bits timer for the H8300 platform.
558 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
561 This enables the 16 bits timer for the H8300 platform with the
565 bool "Clocksource for the H8300 platform" if COMPILE_TEST
568 This enables the clocksource for the H8300 platform with the
571 config CLKSRC_IMX_GPT
572 bool "Clocksource using i.MX GPT" if COMPILE_TEST
573 depends on (ARM || ARM64) && CLKDEV_LOOKUP
576 config CLKSRC_IMX_TPM
577 bool "Clocksource using i.MX TPM" if COMPILE_TEST
578 depends on (ARM || ARM64) && CLKDEV_LOOKUP
582 Enable this option to use IMX Timer/PWM Module (TPM) timer as
585 config TIMER_IMX_SYS_CTR
586 bool "i.MX system counter timer" if COMPILE_TEST
589 Enable this option to use i.MX system counter timer as a
593 bool "Low power clocksource found in the LPC" if COMPILE_TEST
594 select TIMER_OF if OF
598 Enable this option to use the Low Power controller timer
601 config ATCPIT100_TIMER
602 bool "ATCPIT100 timer driver"
603 depends on NDS32 || COMPILE_TEST
608 This option enables support for the Andestech ATCPIT100 timers.
611 bool "Timer for the RISC-V platform" if COMPILE_TEST
612 depends on GENERIC_SCHED_CLOCK && RISCV && RISCV_SBI
616 This enables the per-hart timer built into all RISC-V systems, which
617 is accessed via both the SBI and the rdcycle instruction. This is
618 required for all RISC-V systems.
621 bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
622 depends on GENERIC_SCHED_CLOCK && RISCV
626 This option enables the CLINT timer for RISC-V systems. The CLINT
627 driver is usually used for NoMMU RISC-V systems.
630 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
634 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
636 csky,mptimer is not only used in SMP system, it also could be used in
637 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
640 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
645 This option enables support for gx6605s SOC's timer.
647 config MILBEAUT_TIMER
648 bool "Milbeaut timer driver" if COMPILE_TEST
654 Enables the support for Milbeaut timer driver.
657 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
659 depends on MIPS || COMPILE_TEST
660 depends on COMMON_CLK
665 Support for the timer/counter unit of the Ingenic JZ SoCs.
667 config INGENIC_SYSOST
668 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
669 depends on MIPS || COMPILE_TEST
670 depends on COMMON_CLK
675 Support for the SYSOST of the Ingenic X Series SoCs.
678 bool "Clocksource using the OST in Ingenic JZ SoCs"
679 depends on MIPS || COMPILE_TEST
680 depends on COMMON_CLK
683 Support for the Operating System Timer of the Ingenic JZ SoCs.
685 config MICROCHIP_PIT64B
686 bool "Microchip PIT64B support"
687 depends on OF || COMPILE_TEST
691 This option enables Microchip PIT64B timer for Atmel
692 based system. It supports the oneshot, the periodic
693 modes and high resolution. It is used as a clocksource