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)
275 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
276 depends on GENERIC_SCHED_CLOCK
281 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
284 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
285 (ARC700 as well as ARC HS38).
286 TIMER0 serves as clockevent while TIMER1 provides clocksource
288 config ARC_TIMERS_64BIT
289 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
290 depends on ARC_TIMERS
293 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
294 RTC is implemented inside the core, while GFRC sits outside the core in
295 ARConnect IP block. Driver automatically picks one of them for clocksource
298 config ARM_ARCH_TIMER
300 select TIMER_OF if OF
301 select TIMER_ACPI if ACPI
303 config ARM_ARCH_TIMER_EVTSTREAM
304 bool "Enable ARM architected timer event stream generation by default"
305 default y if ARM_ARCH_TIMER
306 depends on ARM_ARCH_TIMER
308 This option enables support by default for event stream generation
309 based on the ARM architected timer. It is used for waking up CPUs
310 executing the wfe instruction at a frequency represented as a
311 power-of-2 divisor of the clock rate. The behaviour can also be
312 overridden on the command line using the
313 clocksource.arm_arch_timer.evtstream parameter.
314 The main use of the event stream is wfe-based timeouts of userspace
315 locking implementations. It might also be useful for imposing timeout
316 on wfe to safeguard against any programming errors in case an expected
317 event is not generated.
318 This must be disabled for hardware validation purposes to detect any
319 hardware anomalies of missing events.
321 config ARM_ARCH_TIMER_OOL_WORKAROUND
324 config FSL_ERRATUM_A008585
325 bool "Workaround for Freescale/NXP Erratum A-008585"
327 depends on ARM_ARCH_TIMER && ARM64
328 select ARM_ARCH_TIMER_OOL_WORKAROUND
330 This option enables a workaround for Freescale/NXP Erratum
331 A-008585 ("ARM generic timer may contain an erroneous
332 value"). The workaround will only be active if the
333 fsl,erratum-a008585 property is found in the timer node.
335 config HISILICON_ERRATUM_161010101
336 bool "Workaround for Hisilicon Erratum 161010101"
338 select ARM_ARCH_TIMER_OOL_WORKAROUND
339 depends on ARM_ARCH_TIMER && ARM64
341 This option enables a workaround for Hisilicon Erratum
342 161010101. The workaround will be active if the hisilicon,erratum-161010101
343 property is found in the timer node.
345 config ARM64_ERRATUM_858921
346 bool "Workaround for Cortex-A73 erratum 858921"
348 select ARM_ARCH_TIMER_OOL_WORKAROUND
349 depends on ARM_ARCH_TIMER && ARM64
351 This option enables a workaround applicable to Cortex-A73
352 (all versions), whose counter may return incorrect values.
353 The workaround will be dynamically enabled when an affected
356 config ARM_GLOBAL_TIMER
357 bool "Support for the ARM global timer" if COMPILE_TEST
358 select TIMER_OF if OF
361 This options enables support for the ARM global timer unit
363 config ARM_TIMER_SP804
364 bool "Support for Dual Timer SP804 module"
365 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
367 select TIMER_OF if OF
369 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
371 depends on ARM_GLOBAL_TIMER
374 Use ARM global timer clock source as sched_clock
376 config ARMV7M_SYSTICK
377 bool "Support for the ARMv7M system time" if COMPILE_TEST
378 select TIMER_OF if OF
381 This options enables support for the ARMv7M system timer unit
384 select TIMER_OF if OF
385 def_bool SOC_AT91SAM9 || SOC_SAMA5
388 bool "Atmel ST timer support" if COMPILE_TEST
393 Support for the Atmel ST timer.
395 config CLKSRC_METAG_GENERIC
398 This option enables support for the Meta per-thread timers.
400 config CLKSRC_EXYNOS_MCT
401 bool "Exynos multi core timer driver" if COMPILE_TEST
402 depends on ARM || ARM64
404 Support for Multi Core Timer controller on Exynos SoCs.
406 config CLKSRC_SAMSUNG_PWM
407 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
410 This is a new clocksource driver for the PWM timer found in
411 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
412 for all devicetree enabled platforms. This driver will be
413 needed only on systems that do not have the Exynos MCT available.
416 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
420 Support for Freescale FlexTimer Module (FTM) timer.
426 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
428 config OXNAS_RPS_TIMER
429 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
433 This enables support for the Oxford Semiconductor OXNAS RPS timers.
435 config SYS_SUPPORTS_SH_CMT
439 bool "Mediatek timer driver" if COMPILE_TEST
444 Support for Mediatek timer driver.
447 bool "Spreadtrum timer driver" if COMPILE_TEST
451 Enables support for the Spreadtrum timer driver.
453 config SYS_SUPPORTS_SH_MTU2
456 config SYS_SUPPORTS_SH_TMU
459 config SYS_SUPPORTS_EM_STI
462 config CLKSRC_JCORE_PIT
463 bool "J-Core PIT timer driver" if COMPILE_TEST
468 This enables build of clocksource and clockevent driver for
469 the integrated PIT in the J-Core synthesizable, open source SoC.
472 bool "Renesas CMT timer driver" if COMPILE_TEST
474 default SYS_SUPPORTS_SH_CMT
476 This enables build of a clocksource and clockevent driver for
477 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
478 variants on a wide range of Mobile and Automotive SoCs from Renesas.
481 bool "Renesas MTU2 timer driver" if COMPILE_TEST
483 default SYS_SUPPORTS_SH_MTU2
485 This enables build of a clockevent driver for the Multi-Function
486 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
487 This hardware comes with 16 bit-timer registers.
490 bool "Renesas OSTM timer driver" if COMPILE_TEST
493 Enables the support for the Renesas OSTM.
496 bool "Renesas TMU timer driver" if COMPILE_TEST
498 default SYS_SUPPORTS_SH_TMU
500 This enables build of a clocksource and clockevent driver for
501 the 32-bit Timer Unit (TMU) hardware available on a wide range
505 bool "Renesas STI timer driver" if COMPILE_TEST
507 default SYS_SUPPORTS_EM_STI
509 This enables build of a clocksource and clockevent driver for
510 the 48-bit System Timer (STI) hardware available on a SoCs
511 such as EMEV2 from former NEC Electronics.
514 bool "Qualcomm MSM timer" if COMPILE_TEST
518 This enables the clocksource and the per CPU clockevent driver for the
521 config CLKSRC_VERSATILE
522 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
523 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
525 default y if MFD_VEXPRESS_SYSREG
527 This option enables clock source based on free running
528 counter available in the "System Registers" block of
529 ARM Versatile, RealView and Versatile Express reference
532 config CLKSRC_MIPS_GIC
537 config CLKSRC_TANGO_XTAL
538 bool "Clocksource for Tango SoC" if COMPILE_TEST
543 This enables the clocksource for Tango SoC
546 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
550 This enables OST0 support available on PXA and SA-11x0
554 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
557 This enables the 8 bits timer for the H8300 platform.
560 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
563 This enables the 16 bits timer for the H8300 platform with the
567 bool "Clocksource for the H8300 platform" if COMPILE_TEST
570 This enables the clocksource for the H8300 platform with the
573 config CLKSRC_IMX_GPT
574 bool "Clocksource using i.MX GPT" if COMPILE_TEST
575 depends on ARM && CLKDEV_LOOKUP
578 config CLKSRC_IMX_TPM
579 bool "Clocksource using i.MX TPM" if COMPILE_TEST
580 depends on ARM && CLKDEV_LOOKUP
583 Enable this option to use IMX Timer/PWM Module (TPM) timer as
587 bool "Low power clocksource found in the LPC" if COMPILE_TEST
588 select TIMER_OF if OF
592 Enable this option to use the Low Power controller timer