1 menu "Clock Source drivers"
2 depends on GENERIC_CLOCKEVENTS
25 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
31 bool "BCM2835 timer driver" if COMPILE_TEST
34 Enables the support for the BCM2835 timer driver.
37 bool "BCM mobile timer driver" if COMPILE_TEST
40 Enables the support for the BCM Kona mobile timer driver.
42 config DIGICOLOR_TIMER
43 bool "Digicolor timer driver" if COMPILE_TEST
47 Enables the support for the digicolor timer driver.
50 bool "DW APB timer driver" if COMPILE_TEST
52 Enables the support for the dw_apb timer.
54 config DW_APB_TIMER_OF
60 bool "Faraday Technology timer driver" if COMPILE_TEST
66 Enables support for the Faraday Technology timer block
70 bool "Rockchip timer driver" if COMPILE_TEST
71 depends on ARM || ARM64
75 Enables the support for the rockchip timer driver.
77 config ARMADA_370_XP_TIMER
78 bool "Armada 370 and XP timer driver" if COMPILE_TEST
83 Enables the support for the Armada 370 and XP timer driver.
86 bool "Meson6 timer driver" if COMPILE_TEST
89 Enables the support for the Meson6 timer driver.
92 bool "Orion timer driver" if COMPILE_TEST
97 Enables the support for the Orion timer driver
100 bool "Owl timer driver" if COMPILE_TEST
103 Enables the support for the Actions Semi Owl timer driver.
106 bool "Sun4i timer driver" if COMPILE_TEST
111 Enables support for the Sun4i timer.
114 bool "Sun5i timer driver" if COMPILE_TEST
116 depends on COMMON_CLK
118 Enables support the Sun5i timer.
121 bool "Tegra timer driver" if COMPILE_TEST
125 Enables support for the Tegra driver.
128 bool "VT8500 timer driver" if COMPILE_TEST
131 Enables support for the VT8500 driver.
133 config CADENCE_TTC_TIMER
134 bool "Cadence TTC timer driver" if COMPILE_TEST
135 depends on COMMON_CLK
137 Enables support for the cadence ttc driver.
140 bool "ASM9260 timer driver" if COMPILE_TEST
144 Enables support for the ASM9260 timer.
146 config CLKSRC_NOMADIK_MTU
147 bool "Nomakdik clocksource driver" if COMPILE_TEST
151 Support for Multi Timer Unit. MTU provides access
152 to multiple interrupt generating programmable
153 32-bit free running decrementing counters.
155 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
157 depends on CLKSRC_NOMADIK_MTU
159 Use the Multi Timer Unit as the sched_clock.
161 config CLKSRC_DBX500_PRCMU
162 bool "Clocksource PRCMU Timer" if COMPILE_TEST
165 Use the always on PRCMU Timer as clocksource
167 config CLPS711X_TIMER
168 bool "Cirrus logic timer driver" if COMPILE_TEST
171 Enables support for the Cirrus Logic PS711 timer.
174 bool "Atlas7 timer driver" if COMPILE_TEST
177 Enables support for the Atlas7 timer.
180 bool "Mxs timer driver" if COMPILE_TEST
184 Enables support for the Mxs timer.
187 bool "Prima2 timer driver" if COMPILE_TEST
190 Enables support for the Prima2 timer.
193 bool "U300 timer driver" if COMPILE_TEST
197 Enables support for the U300 timer.
200 bool "NSpire timer driver" if COMPILE_TEST
203 Enables support for the Nspire timer.
205 config KEYSTONE_TIMER
206 bool "Keystone timer driver" if COMPILE_TEST
207 depends on ARM || ARM64
210 Enables support for the Keystone timer.
212 config INTEGRATOR_AP_TIMER
213 bool "Integrator-ap timer driver" if COMPILE_TEST
216 Enables support for the Integrator-ap timer.
218 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
219 bool "Clocksource PRCMU Timer sched_clock"
220 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
223 Use the always on PRCMU Timer as sched_clock
226 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
227 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
231 Support to use the timers of EFM32 SoCs as clock source and clock
234 config CLKSRC_LPC32XX
235 bool "Clocksource for LPC32XX" if COMPILE_TEST
241 Support for the LPC32XX clocksource.
243 config CLKSRC_PISTACHIO
244 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
248 Enables the clocksource for the Pistachio SoC.
251 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
252 depends on GENERIC_SCHED_CLOCK
253 select TIMER_OF if OF
255 This option enables support for Texas Instruments 32.768 Hz clocksource
256 available on many OMAP-like platforms.
259 bool "NPS400 clocksource driver" if COMPILE_TEST
260 depends on !PHYS_ADDR_T_64BIT
262 select TIMER_OF if OF
264 NPS400 clocksource support.
265 Got 64 bit counter with update rate up to 1000MHz.
266 This counter is accessed via couple of 32 bit memory mapped registers.
269 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
270 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
274 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
275 depends on GENERIC_SCHED_CLOCK
280 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
283 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
284 (ARC700 as well as ARC HS38).
285 TIMER0 serves as clockevent while TIMER1 provides clocksource
287 config ARC_TIMERS_64BIT
288 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
289 depends on ARC_TIMERS
292 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
293 RTC is implemented inside the core, while GFRC sits outside the core in
294 ARConnect IP block. Driver automatically picks one of them for clocksource
297 config ARM_ARCH_TIMER
299 select TIMER_OF if OF
300 select TIMER_ACPI if ACPI
302 config ARM_ARCH_TIMER_EVTSTREAM
303 bool "Enable ARM architected timer event stream generation by default"
304 default y if ARM_ARCH_TIMER
305 depends on ARM_ARCH_TIMER
307 This option enables support by default for event stream generation
308 based on the ARM architected timer. It is used for waking up CPUs
309 executing the wfe instruction at a frequency represented as a
310 power-of-2 divisor of the clock rate. The behaviour can also be
311 overridden on the command line using the
312 clocksource.arm_arch_timer.evtstream parameter.
313 The main use of the event stream is wfe-based timeouts of userspace
314 locking implementations. It might also be useful for imposing timeout
315 on wfe to safeguard against any programming errors in case an expected
316 event is not generated.
317 This must be disabled for hardware validation purposes to detect any
318 hardware anomalies of missing events.
320 config ARM_ARCH_TIMER_OOL_WORKAROUND
323 config FSL_ERRATUM_A008585
324 bool "Workaround for Freescale/NXP Erratum A-008585"
326 depends on ARM_ARCH_TIMER && ARM64
327 select ARM_ARCH_TIMER_OOL_WORKAROUND
329 This option enables a workaround for Freescale/NXP Erratum
330 A-008585 ("ARM generic timer may contain an erroneous
331 value"). The workaround will only be active if the
332 fsl,erratum-a008585 property is found in the timer node.
334 config HISILICON_ERRATUM_161010101
335 bool "Workaround for Hisilicon Erratum 161010101"
337 select ARM_ARCH_TIMER_OOL_WORKAROUND
338 depends on ARM_ARCH_TIMER && ARM64
340 This option enables a workaround for Hisilicon Erratum
341 161010101. The workaround will be active if the hisilicon,erratum-161010101
342 property is found in the timer node.
344 config ARM64_ERRATUM_858921
345 bool "Workaround for Cortex-A73 erratum 858921"
347 select ARM_ARCH_TIMER_OOL_WORKAROUND
348 depends on ARM_ARCH_TIMER && ARM64
350 This option enables a workaround applicable to Cortex-A73
351 (all versions), whose counter may return incorrect values.
352 The workaround will be dynamically enabled when an affected
355 config ARM_GLOBAL_TIMER
356 bool "Support for the ARM global timer" if COMPILE_TEST
357 select TIMER_OF if OF
360 This options enables support for the ARM global timer unit
362 config ARM_TIMER_SP804
363 bool "Support for Dual Timer SP804 module"
364 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
366 select TIMER_OF if OF
368 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
370 depends on ARM_GLOBAL_TIMER
373 Use ARM global timer clock source as sched_clock
375 config ARMV7M_SYSTICK
376 bool "Support for the ARMv7M system time" if COMPILE_TEST
377 select TIMER_OF if OF
380 This options enables support for the ARMv7M system timer unit
383 select TIMER_OF if OF
384 def_bool SOC_AT91SAM9 || SOC_SAMA5
387 bool "Atmel ST timer support" if COMPILE_TEST
391 Support for the Atmel ST timer.
393 config CLKSRC_METAG_GENERIC
396 This option enables support for the Meta per-thread timers.
398 config CLKSRC_EXYNOS_MCT
399 bool "Exynos multi core timer driver" if COMPILE_TEST
400 depends on ARM || ARM64
402 Support for Multi Core Timer controller on Exynos SoCs.
404 config CLKSRC_SAMSUNG_PWM
405 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
408 This is a new clocksource driver for the PWM timer found in
409 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
410 for all devicetree enabled platforms. This driver will be
411 needed only on systems that do not have the Exynos MCT available.
414 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
418 Support for Freescale FlexTimer Module (FTM) timer.
424 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
426 config OXNAS_RPS_TIMER
427 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
431 This enables support for the Oxford Semiconductor OXNAS RPS timers.
433 config SYS_SUPPORTS_SH_CMT
437 bool "Mediatek timer driver" if COMPILE_TEST
442 Support for Mediatek timer driver.
444 config SYS_SUPPORTS_SH_MTU2
447 config SYS_SUPPORTS_SH_TMU
450 config SYS_SUPPORTS_EM_STI
453 config CLKSRC_JCORE_PIT
454 bool "J-Core PIT timer driver" if COMPILE_TEST
459 This enables build of clocksource and clockevent driver for
460 the integrated PIT in the J-Core synthesizable, open source SoC.
463 bool "Renesas CMT timer driver" if COMPILE_TEST
465 default SYS_SUPPORTS_SH_CMT
467 This enables build of a clocksource and clockevent driver for
468 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
469 variants on a wide range of Mobile and Automotive SoCs from Renesas.
472 bool "Renesas MTU2 timer driver" if COMPILE_TEST
474 default SYS_SUPPORTS_SH_MTU2
476 This enables build of a clockevent driver for the Multi-Function
477 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
478 This hardware comes with 16 bit-timer registers.
481 bool "Renesas OSTM timer driver" if COMPILE_TEST
484 Enables the support for the Renesas OSTM.
487 bool "Renesas TMU timer driver" if COMPILE_TEST
489 default SYS_SUPPORTS_SH_TMU
491 This enables build of a clocksource and clockevent driver for
492 the 32-bit Timer Unit (TMU) hardware available on a wide range
496 bool "Renesas STI timer driver" if COMPILE_TEST
498 default SYS_SUPPORTS_EM_STI
500 This enables build of a clocksource and clockevent driver for
501 the 48-bit System Timer (STI) hardware available on a SoCs
502 such as EMEV2 from former NEC Electronics.
505 bool "Qualcomm MSM timer" if COMPILE_TEST
509 This enables the clocksource and the per CPU clockevent driver for the
512 config CLKSRC_VERSATILE
513 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
514 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
516 default y if MFD_VEXPRESS_SYSREG
518 This option enables clock source based on free running
519 counter available in the "System Registers" block of
520 ARM Versatile, RealView and Versatile Express reference
523 config CLKSRC_MIPS_GIC
528 config CLKSRC_TANGO_XTAL
529 bool "Clocksource for Tango SoC" if COMPILE_TEST
534 This enables the clocksource for Tango SoC
537 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
541 This enables OST0 support available on PXA and SA-11x0
545 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
548 This enables the 8 bits timer for the H8300 platform.
551 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
554 This enables the 16 bits timer for the H8300 platform with the
558 bool "Clocksource for the H8300 platform" if COMPILE_TEST
561 This enables the clocksource for the H8300 platform with the
564 config CLKSRC_IMX_GPT
565 bool "Clocksource using i.MX GPT" if COMPILE_TEST
566 depends on ARM && CLKDEV_LOOKUP
569 config CLKSRC_IMX_TPM
570 bool "Clocksource using i.MX TPM" if COMPILE_TEST
571 depends on ARM && CLKDEV_LOOKUP
574 Enable this option to use IMX Timer/PWM Module (TPM) timer as
578 bool "Low power clocksource found in the LPC" if COMPILE_TEST
579 select TIMER_OF if OF
583 Enable this option to use the Low Power controller timer