1 menu "Clock Source drivers"
2 depends on !ARCH_USES_GETTIMEOFFSET
25 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
31 bool "BCM2835 timer driver" if COMPILE_TEST
32 depends on GENERIC_CLOCKEVENTS
35 Enables the support for the BCM2835 timer driver.
38 bool "BCM mobile timer driver" if COMPILE_TEST
39 depends on GENERIC_CLOCKEVENTS
42 Enables the support for the BCM Kona mobile timer driver.
44 config DIGICOLOR_TIMER
45 bool "Digicolor timer driver" if COMPILE_TEST
46 depends on GENERIC_CLOCKEVENTS
50 Enables the support for the digicolor timer driver.
53 bool "DW APB timer driver" if COMPILE_TEST
54 depends on GENERIC_CLOCKEVENTS
56 Enables the support for the dw_apb timer.
58 config DW_APB_TIMER_OF
64 bool "Rockchip timer driver" if COMPILE_TEST
65 depends on ARM || ARM64
68 Enables the support for the rockchip timer driver.
70 config ARMADA_370_XP_TIMER
71 bool "Armada 370 and XP timer driver" if COMPILE_TEST
76 Enables the support for the Armada 370 and XP timer driver.
79 bool "Meson6 timer driver" if COMPILE_TEST
80 depends on GENERIC_CLOCKEVENTS
83 Enables the support for the Meson6 timer driver.
86 bool "Orion timer driver" if COMPILE_TEST
91 Enables the support for the Orion timer driver
94 bool "Sun4i timer driver" if COMPILE_TEST
95 depends on GENERIC_CLOCKEVENTS
99 Enables support for the Sun4i timer.
102 bool "Sun5i timer driver" if COMPILE_TEST
104 depends on COMMON_CLK
106 Enables support the Sun5i timer.
109 bool "Tegra timer driver" if COMPILE_TEST
113 Enables support for the Tegra driver.
116 bool "VT8500 timer driver" if COMPILE_TEST
117 depends on GENERIC_CLOCKEVENTS
120 Enables support for the VT8500 driver.
122 config CADENCE_TTC_TIMER
123 bool "Cadence TTC timer driver" if COMPILE_TEST
124 depends on COMMON_CLK
126 Enables support for the cadence ttc driver.
129 bool "ASM9260 timer driver" if COMPILE_TEST
130 depends on GENERIC_CLOCKEVENTS
134 Enables support for the ASM9260 timer.
136 config CLKSRC_NOMADIK_MTU
137 bool "Nomakdik clocksource driver" if COMPILE_TEST
141 Support for Multi Timer Unit. MTU provides access
142 to multiple interrupt generating programmable
143 32-bit free running decrementing counters.
145 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
147 depends on CLKSRC_NOMADIK_MTU
149 Use the Multi Timer Unit as the sched_clock.
151 config CLKSRC_DBX500_PRCMU
152 bool "Clocksource PRCMU Timer" if COMPILE_TEST
153 depends on GENERIC_CLOCKEVENTS
156 Use the always on PRCMU Timer as clocksource
158 config CLPS711X_TIMER
159 bool "Cirrus logic timer driver" if COMPILE_TEST
160 depends on GENERIC_CLOCKEVENTS
163 Enables support for the Cirrus Logic PS711 timer.
166 bool "Atlas7 timer driver" if COMPILE_TEST
167 depends on GENERIC_CLOCKEVENTS
170 Enables support for the Atlas7 timer.
173 bool "Moxart timer driver" if COMPILE_TEST
174 depends on GENERIC_CLOCKEVENTS
177 Enables support for the Moxart timer.
180 bool "Mxs timer driver" if COMPILE_TEST
181 depends on GENERIC_CLOCKEVENTS
185 Enables support for the Mxs timer.
188 bool "Prima2 timer driver" if COMPILE_TEST
189 depends on GENERIC_CLOCKEVENTS
192 Enables support for the Prima2 timer.
195 bool "U300 timer driver" if COMPILE_TEST
196 depends on GENERIC_CLOCKEVENTS
200 Enables support for the U300 timer.
203 bool "NSpire timer driver" if COMPILE_TEST
204 depends on GENERIC_CLOCKEVENTS
207 Enables support for the Nspire timer.
209 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
210 bool "Clocksource PRCMU Timer sched_clock"
211 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
214 Use the always on PRCMU Timer as sched_clock
217 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
218 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
222 Support to use the timers of EFM32 SoCs as clock source and clock
225 config CLKSRC_LPC32XX
226 bool "Clocksource for LPC32XX" if COMPILE_TEST
227 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
232 Support for the LPC32XX clocksource.
234 config CLKSRC_PISTACHIO
235 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
239 Enables the clocksource for the Pistachio SoC.
242 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
243 depends on GENERIC_SCHED_CLOCK
244 select CLKSRC_OF if OF
246 This option enables support for Texas Instruments 32.768 Hz clocksource
247 available on many OMAP-like platforms.
250 bool "NPS400 clocksource driver" if COMPILE_TEST
251 depends on !PHYS_ADDR_T_64BIT
253 select CLKSRC_OF if OF
255 NPS400 clocksource support.
256 Got 64 bit counter with update rate up to 1000MHz.
257 This counter is accessed via couple of 32 bit memory mapped registers.
260 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
261 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
265 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
266 depends on GENERIC_SCHED_CLOCK
270 config ARM_ARCH_TIMER
272 select CLKSRC_OF if OF
273 select CLKSRC_ACPI if ACPI
275 config ARM_ARCH_TIMER_EVTSTREAM
276 bool "Support for ARM architected timer event stream generation"
277 default y if ARM_ARCH_TIMER
278 depends on ARM_ARCH_TIMER
280 This option enables support for event stream generation based on
281 the ARM architected timer. It is used for waking up CPUs executing
282 the wfe instruction at a frequency represented as a power-of-2
283 divisor of the clock rate.
284 The main use of the event stream is wfe-based timeouts of userspace
285 locking implementations. It might also be useful for imposing timeout
286 on wfe to safeguard against any programming errors in case an expected
287 event is not generated.
288 This must be disabled for hardware validation purposes to detect any
289 hardware anomalies of missing events.
291 config ARM_GLOBAL_TIMER
293 select CLKSRC_OF if OF
295 This options enables support for the ARM global timer unit
297 config ARM_TIMER_SP804
298 bool "Support for Dual Timer SP804 module"
299 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
301 select CLKSRC_OF if OF
303 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
305 depends on ARM_GLOBAL_TIMER
308 Use ARM global timer clock source as sched_clock
310 config ARMV7M_SYSTICK
311 bool "Support for the ARMv7M system time" if COMPILE_TEST
312 select CLKSRC_OF if OF
315 This options enables support for the ARMv7M system timer unit
318 select CLKSRC_OF if OF
319 def_bool SOC_AT91SAM9 || SOC_SAMA5
326 config CLKSRC_METAG_GENERIC
329 This option enables support for the Meta per-thread timers.
331 config CLKSRC_EXYNOS_MCT
332 bool "Exynos multi core timer driver" if COMPILE_TEST
335 Support for Multi Core Timer controller on Exynos SoCs.
337 config CLKSRC_SAMSUNG_PWM
338 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
339 depends on GENERIC_CLOCKEVENTS
342 This is a new clocksource driver for the PWM timer found in
343 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
344 for all devicetree enabled platforms. This driver will be
345 needed only on systems that do not have the Exynos MCT available.
348 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
349 depends on GENERIC_CLOCKEVENTS
353 Support for Freescale FlexTimer Module (FTM) timer.
359 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
361 config OXNAS_RPS_TIMER
362 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
363 depends on GENERIC_CLOCKEVENTS
367 This enables support for the Oxford Semiconductor OXNAS RPS timers.
369 config SYS_SUPPORTS_SH_CMT
373 bool "Mediatek timer driver" if COMPILE_TEST
374 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
378 Support for Mediatek timer driver.
380 config SYS_SUPPORTS_SH_MTU2
383 config SYS_SUPPORTS_SH_TMU
386 config SYS_SUPPORTS_EM_STI
390 bool "Renesas CMT timer driver" if COMPILE_TEST
391 depends on GENERIC_CLOCKEVENTS
393 default SYS_SUPPORTS_SH_CMT
395 This enables build of a clocksource and clockevent driver for
396 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
397 variants on a wide range of Mobile and Automotive SoCs from Renesas.
400 bool "Renesas MTU2 timer driver" if COMPILE_TEST
401 depends on GENERIC_CLOCKEVENTS
403 default SYS_SUPPORTS_SH_MTU2
405 This enables build of a clockevent driver for the Multi-Function
406 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
407 This hardware comes with 16 bit-timer registers.
410 bool "Renesas TMU timer driver" if COMPILE_TEST
411 depends on GENERIC_CLOCKEVENTS
413 default SYS_SUPPORTS_SH_TMU
415 This enables build of a clocksource and clockevent driver for
416 the 32-bit Timer Unit (TMU) hardware available on a wide range
420 bool "Renesas STI timer driver" if COMPILE_TEST
421 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
422 default SYS_SUPPORTS_EM_STI
424 This enables build of a clocksource and clockevent driver for
425 the 48-bit System Timer (STI) hardware available on a SoCs
426 such as EMEV2 from former NEC Electronics.
429 bool "Qualcomm MSM timer" if COMPILE_TEST
433 This enables the clocksource and the per CPU clockevent driver for the
436 config CLKSRC_VERSATILE
437 bool "ARM Versatile (Express) reference platforms clock source"
438 depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
440 default y if MFD_VEXPRESS_SYSREG
442 This option enables clock source based on free running
443 counter available in the "System Registers" block of
444 ARM Versatile, RealView and Versatile Express reference
447 config CLKSRC_MIPS_GIC
452 config CLKSRC_TANGO_XTAL
453 bool "Clocksource for Tango SoC" if COMPILE_TEST
458 This enables the clocksource for Tango SoC
461 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
462 depends on GENERIC_CLOCKEVENTS
466 This enables OST0 support available on PXA and SA-11x0
470 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
471 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
473 This enables the 8 bits timer for the H8300 platform.
476 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
477 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
479 This enables the 16 bits timer for the H8300 platform with the
483 bool "Clocksource for the H8300 platform" if COMPILE_TEST
484 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
486 This enables the clocksource for the H8300 platform with the
489 config CLKSRC_IMX_GPT
490 bool "Clocksource using i.MX GPT" if COMPILE_TEST
491 depends on ARM && CLKDEV_LOOKUP
495 bool "Low power clocksource found in the LPC" if COMPILE_TEST
496 select CLKSRC_OF if OF
500 Enable this option to use the Low Power controller timer