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 "MXS timer driver" if COMPILE_TEST
205 Enables support for the MXS timer.
208 bool "NSpire timer driver" if COMPILE_TEST
211 Enables support for the Nspire timer.
213 config KEYSTONE_TIMER
214 bool "Keystone timer driver" if COMPILE_TEST
215 depends on ARM || ARM64
218 Enables support for the Keystone timer.
220 config INTEGRATOR_AP_TIMER
221 bool "Integrator-AP timer driver" if COMPILE_TEST
224 Enables support for the Integrator-AP timer.
226 config CLKSRC_LPC32XX
227 bool "Clocksource for LPC32XX" if COMPILE_TEST
233 Support for the LPC32XX clocksource.
235 config CLKSRC_PISTACHIO
236 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
240 Enables the clocksource for the Pistachio SoC.
243 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
244 depends on GENERIC_SCHED_CLOCK
245 select TIMER_OF if OF
247 This option enables support for Texas Instruments 32.768 Hz clocksource
248 available on many OMAP-like platforms.
251 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
252 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
256 config CLKSRC_STM32_LP
257 bool "Low power clocksource for STM32 SoCs"
258 depends on MFD_STM32_LPTIMER || COMPILE_TEST
261 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
262 depends on GENERIC_SCHED_CLOCK
267 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
268 depends on GENERIC_SCHED_CLOCK
271 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
272 (ARC700 as well as ARC HS38).
273 TIMER0 serves as clockevent while TIMER1 provides clocksource.
275 config ARC_TIMERS_64BIT
276 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
277 depends on ARC_TIMERS
280 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
281 RTC is implemented inside the core, while GFRC sits outside the core in
282 ARConnect IP block. Driver automatically picks one of them for clocksource
285 config ARM_ARCH_TIMER
287 select TIMER_OF if OF
288 select TIMER_ACPI if ACPI
290 config ARM_ARCH_TIMER_EVTSTREAM
291 bool "Enable ARM architected timer event stream generation by default"
292 default y if ARM_ARCH_TIMER
293 depends on ARM_ARCH_TIMER
295 This option enables support by default for event stream generation
296 based on the ARM architected timer. It is used for waking up CPUs
297 executing the wfe instruction at a frequency represented as a
298 power-of-2 divisor of the clock rate. The behaviour can also be
299 overridden on the command line using the
300 clocksource.arm_arch_timer.evtstream parameter.
301 The main use of the event stream is wfe-based timeouts of userspace
302 locking implementations. It might also be useful for imposing timeout
303 on wfe to safeguard against any programming errors in case an expected
304 event is not generated.
305 This must be disabled for hardware validation purposes to detect any
306 hardware anomalies of missing events.
308 config ARM_ARCH_TIMER_OOL_WORKAROUND
311 config FSL_ERRATUM_A008585
312 bool "Workaround for Freescale/NXP Erratum A-008585"
314 depends on ARM_ARCH_TIMER && ARM64
315 select ARM_ARCH_TIMER_OOL_WORKAROUND
317 This option enables a workaround for Freescale/NXP Erratum
318 A-008585 ("ARM generic timer may contain an erroneous
319 value"). The workaround will only be active if the
320 fsl,erratum-a008585 property is found in the timer node.
322 config HISILICON_ERRATUM_161010101
323 bool "Workaround for Hisilicon Erratum 161010101"
325 select ARM_ARCH_TIMER_OOL_WORKAROUND
326 depends on ARM_ARCH_TIMER && ARM64
328 This option enables a workaround for Hisilicon Erratum
329 161010101. The workaround will be active if the hisilicon,erratum-161010101
330 property is found in the timer node.
332 config ARM64_ERRATUM_858921
333 bool "Workaround for Cortex-A73 erratum 858921"
335 select ARM_ARCH_TIMER_OOL_WORKAROUND
336 depends on ARM_ARCH_TIMER && ARM64
338 This option enables a workaround applicable to Cortex-A73
339 (all versions), whose counter may return incorrect values.
340 The workaround will be dynamically enabled when an affected
343 config SUN50I_ERRATUM_UNKNOWN1
344 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
346 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
347 select ARM_ARCH_TIMER_OOL_WORKAROUND
349 This option enables a workaround for instability in the timer on
350 the Allwinner A64 SoC. The workaround will only be active if the
351 allwinner,erratum-unknown1 property is found in the timer node.
353 config ARM_GLOBAL_TIMER
354 bool "Support for the ARM global timer" if COMPILE_TEST
355 select TIMER_OF if OF
358 This option enables support for the ARM global timer unit.
360 config ARM_TIMER_SP804
361 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
362 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
364 select TIMER_OF if OF
366 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
368 depends on ARM_GLOBAL_TIMER
371 Use ARM global timer clock source as sched_clock.
373 config ARMV7M_SYSTICK
374 bool "Support for the ARMv7M system time" if COMPILE_TEST
375 select TIMER_OF if OF
378 This option enables support for the ARMv7M system timer unit.
381 bool "Atmel PIT support" if COMPILE_TEST
383 select TIMER_OF if OF
385 Support for the Periodic Interval Timer found on Atmel SoCs.
388 bool "Atmel ST timer support" if COMPILE_TEST
393 Support for the Atmel ST timer.
395 config ATMEL_TCB_CLKSRC
396 bool "Atmel TC Block timer driver" if COMPILE_TEST
397 depends on ARM && HAS_IOMEM
398 select TIMER_OF if OF
400 Support for Timer Counter Blocks on Atmel SoCs.
402 config CLKSRC_EXYNOS_MCT
403 bool "Exynos multi core timer driver" if COMPILE_TEST
404 depends on ARM || ARM64
406 Support for Multi Core Timer controller on Exynos SoCs.
408 config CLKSRC_SAMSUNG_PWM
409 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
412 This is a new clocksource driver for the PWM timer found in
413 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
414 for all devicetree enabled platforms. This driver will be
415 needed only on systems that do not have the Exynos MCT available.
418 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
422 Support for Freescale FlexTimer Module (FTM) timer.
428 Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
430 config OXNAS_RPS_TIMER
431 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
435 This enables support for the Oxford Semiconductor OXNAS RPS timers.
437 config SYS_SUPPORTS_SH_CMT
441 bool "Mediatek timer driver" if COMPILE_TEST
446 Support for Mediatek timer driver.
449 bool "Spreadtrum timer driver" if EXPERT
451 depends on (ARCH_SPRD || COMPILE_TEST)
455 Enables support for the Spreadtrum timer driver.
457 config SYS_SUPPORTS_SH_MTU2
460 config SYS_SUPPORTS_SH_TMU
463 config SYS_SUPPORTS_EM_STI
466 config CLKSRC_JCORE_PIT
467 bool "J-Core PIT timer driver" if COMPILE_TEST
472 This enables build of clocksource and clockevent driver for
473 the integrated PIT in the J-Core synthesizable, open source SoC.
476 bool "Renesas CMT timer driver" if COMPILE_TEST
478 default SYS_SUPPORTS_SH_CMT
480 This enables build of a clocksource and clockevent driver for
481 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
482 variants on a wide range of Mobile and Automotive SoCs from Renesas.
485 bool "Renesas MTU2 timer driver" if COMPILE_TEST
487 default SYS_SUPPORTS_SH_MTU2
489 This enables build of a clockevent driver for the Multi-Function
490 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
491 This hardware comes with 16-bit timer registers.
494 bool "Renesas OSTM timer driver" if COMPILE_TEST
498 Enables the support for the Renesas OSTM.
501 bool "Renesas TMU timer driver" if COMPILE_TEST
503 default SYS_SUPPORTS_SH_TMU
505 This enables build of a clocksource and clockevent driver for
506 the 32-bit Timer Unit (TMU) hardware available on a wide range
510 bool "Renesas STI timer driver" if COMPILE_TEST
512 default SYS_SUPPORTS_EM_STI
514 This enables build of a clocksource and clockevent driver for
515 the 48-bit System Timer (STI) hardware available on a SoCs
516 such as EMEV2 from former NEC Electronics.
519 bool "Qualcomm MSM timer" if COMPILE_TEST
523 This enables the clocksource and the per CPU clockevent driver for the
526 config CLKSRC_VERSATILE
527 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
528 depends on GENERIC_SCHED_CLOCK
530 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
532 This option enables clock source based on free running
533 counter available in the "System Registers" block of
534 ARM Versatile and Versatile Express reference platforms.
536 config CLKSRC_MIPS_GIC
539 select CLOCKSOURCE_WATCHDOG
543 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
547 This enables OST0 support available on PXA and SA-11x0
551 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
554 This enables the 8 bits timer for the H8300 platform.
557 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
560 This enables the 16 bits timer for the H8300 platform with the
564 bool "Clocksource for the H8300 platform" if COMPILE_TEST
567 This enables the clocksource for the H8300 platform with the
570 config CLKSRC_IMX_GPT
571 bool "Clocksource using i.MX GPT" if COMPILE_TEST
572 depends on (ARM || ARM64) && CLKDEV_LOOKUP
575 config CLKSRC_IMX_TPM
576 bool "Clocksource using i.MX TPM" if COMPILE_TEST
577 depends on (ARM || ARM64) && CLKDEV_LOOKUP
581 Enable this option to use IMX Timer/PWM Module (TPM) timer as
584 config TIMER_IMX_SYS_CTR
585 bool "i.MX system counter timer" if COMPILE_TEST
588 Enable this option to use i.MX system counter timer as a
592 bool "Low power clocksource found in the LPC" if COMPILE_TEST
593 select TIMER_OF if OF
597 Enable this option to use the Low Power controller timer
600 config ATCPIT100_TIMER
601 bool "ATCPIT100 timer driver"
602 depends on NDS32 || COMPILE_TEST
607 This option enables support for the Andestech ATCPIT100 timers.
610 bool "Timer for the RISC-V platform" if COMPILE_TEST
611 depends on GENERIC_SCHED_CLOCK && RISCV && RISCV_SBI
615 This enables the per-hart timer built into all RISC-V systems, which
616 is accessed via both the SBI and the rdcycle instruction. This is
617 required for all RISC-V systems.
620 bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
621 depends on GENERIC_SCHED_CLOCK && RISCV
625 This option enables the CLINT timer for RISC-V systems. The CLINT
626 driver is usually used for NoMMU RISC-V systems.
629 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
633 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
635 csky,mptimer is not only used in SMP system, it also could be used in
636 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
639 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
644 This option enables support for gx6605s SOC's timer.
646 config MILBEAUT_TIMER
647 bool "Milbeaut timer driver" if COMPILE_TEST
653 Enables the support for Milbeaut timer driver.
656 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
658 depends on MIPS || COMPILE_TEST
659 depends on COMMON_CLK
664 Support for the timer/counter unit of the Ingenic JZ SoCs.
666 config INGENIC_SYSOST
667 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
668 depends on MIPS || COMPILE_TEST
669 depends on COMMON_CLK
674 Support for the SYSOST of the Ingenic X Series SoCs.
677 bool "Clocksource using the OST in Ingenic JZ SoCs"
678 depends on MIPS || COMPILE_TEST
679 depends on COMMON_CLK
682 Support for the Operating System Timer of the Ingenic JZ SoCs.
684 config MICROCHIP_PIT64B
685 bool "Microchip PIT64B support"
686 depends on OF || COMPILE_TEST
690 This option enables Microchip PIT64B timer for Atmel
691 based system. It supports the oneshot, the periodic
692 modes and high resolution. It is used as a clocksource