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.
179 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
180 bool "Clocksource PRCMU Timer sched_clock"
181 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
184 Use the always on PRCMU Timer as sched_clock
187 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
188 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
192 Support to use the timers of EFM32 SoCs as clock source and clock
195 config CLKSRC_LPC32XX
196 bool "Clocksource for LPC32XX" if COMPILE_TEST
197 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
202 Support for the LPC32XX clocksource.
204 config CLKSRC_PISTACHIO
205 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
209 Enables the clocksource for the Pistachio SoC.
212 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
213 depends on GENERIC_SCHED_CLOCK
214 select CLKSRC_OF if OF
216 This option enables support for Texas Instruments 32.768 Hz clocksource
217 available on many OMAP-like platforms.
220 bool "NPS400 clocksource driver" if COMPILE_TEST
221 depends on !PHYS_ADDR_T_64BIT
223 select CLKSRC_OF if OF
225 NPS400 clocksource support.
226 Got 64 bit counter with update rate up to 1000MHz.
227 This counter is accessed via couple of 32 bit memory mapped registers.
230 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
231 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
235 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
236 depends on GENERIC_SCHED_CLOCK
240 config ARM_ARCH_TIMER
242 select CLKSRC_OF if OF
243 select CLKSRC_ACPI if ACPI
245 config ARM_ARCH_TIMER_EVTSTREAM
246 bool "Support for ARM architected timer event stream generation"
247 default y if ARM_ARCH_TIMER
248 depends on ARM_ARCH_TIMER
250 This option enables support for event stream generation based on
251 the ARM architected timer. It is used for waking up CPUs executing
252 the wfe instruction at a frequency represented as a power-of-2
253 divisor of the clock rate.
254 The main use of the event stream is wfe-based timeouts of userspace
255 locking implementations. It might also be useful for imposing timeout
256 on wfe to safeguard against any programming errors in case an expected
257 event is not generated.
258 This must be disabled for hardware validation purposes to detect any
259 hardware anomalies of missing events.
261 config ARM_GLOBAL_TIMER
263 select CLKSRC_OF if OF
265 This options enables support for the ARM global timer unit
267 config ARM_TIMER_SP804
268 bool "Support for Dual Timer SP804 module"
269 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
271 select CLKSRC_OF if OF
273 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
275 depends on ARM_GLOBAL_TIMER
278 Use ARM global timer clock source as sched_clock
280 config ARMV7M_SYSTICK
281 bool "Support for the ARMv7M system time" if COMPILE_TEST
282 select CLKSRC_OF if OF
285 This options enables support for the ARMv7M system timer unit
288 select CLKSRC_OF if OF
289 def_bool SOC_AT91SAM9 || SOC_SAMA5
296 config CLKSRC_METAG_GENERIC
299 This option enables support for the Meta per-thread timers.
301 config CLKSRC_EXYNOS_MCT
302 bool "Exynos multi core timer driver" if COMPILE_TEST
305 Support for Multi Core Timer controller on Exynos SoCs.
307 config CLKSRC_SAMSUNG_PWM
308 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
309 depends on GENERIC_CLOCKEVENTS
312 This is a new clocksource driver for the PWM timer found in
313 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
314 for all devicetree enabled platforms. This driver will be
315 needed only on systems that do not have the Exynos MCT available.
318 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
319 depends on GENERIC_CLOCKEVENTS
323 Support for Freescale FlexTimer Module (FTM) timer.
329 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
331 config OXNAS_RPS_TIMER
332 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
333 depends on GENERIC_CLOCKEVENTS
337 This enables support for the Oxford Semiconductor OXNAS RPS timers.
339 config SYS_SUPPORTS_SH_CMT
343 bool "Mediatek timer driver" if COMPILE_TEST
344 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
348 Support for Mediatek timer driver.
350 config SYS_SUPPORTS_SH_MTU2
353 config SYS_SUPPORTS_SH_TMU
356 config SYS_SUPPORTS_EM_STI
360 bool "Renesas CMT timer driver" if COMPILE_TEST
361 depends on GENERIC_CLOCKEVENTS
363 default SYS_SUPPORTS_SH_CMT
365 This enables build of a clocksource and clockevent driver for
366 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
367 variants on a wide range of Mobile and Automotive SoCs from Renesas.
370 bool "Renesas MTU2 timer driver" if COMPILE_TEST
371 depends on GENERIC_CLOCKEVENTS
373 default SYS_SUPPORTS_SH_MTU2
375 This enables build of a clockevent driver for the Multi-Function
376 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
377 This hardware comes with 16 bit-timer registers.
380 bool "Renesas TMU timer driver" if COMPILE_TEST
381 depends on GENERIC_CLOCKEVENTS
383 default SYS_SUPPORTS_SH_TMU
385 This enables build of a clocksource and clockevent driver for
386 the 32-bit Timer Unit (TMU) hardware available on a wide range
390 bool "Renesas STI timer driver" if COMPILE_TEST
391 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
392 default SYS_SUPPORTS_EM_STI
394 This enables build of a clocksource and clockevent driver for
395 the 48-bit System Timer (STI) hardware available on a SoCs
396 such as EMEV2 from former NEC Electronics.
399 bool "Qualcomm MSM timer" if COMPILE_TEST
403 This enables the clocksource and the per CPU clockevent driver for the
406 config CLKSRC_VERSATILE
407 bool "ARM Versatile (Express) reference platforms clock source"
408 depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
410 default y if MFD_VEXPRESS_SYSREG
412 This option enables clock source based on free running
413 counter available in the "System Registers" block of
414 ARM Versatile, RealView and Versatile Express reference
417 config CLKSRC_MIPS_GIC
422 config CLKSRC_TANGO_XTAL
423 bool "Clocksource for Tango SoC" if COMPILE_TEST
428 This enables the clocksource for Tango SoC
431 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
432 depends on GENERIC_CLOCKEVENTS
436 This enables OST0 support available on PXA and SA-11x0
440 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
441 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
443 This enables the 8 bits timer for the H8300 platform.
446 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
447 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
449 This enables the 16 bits timer for the H8300 platform with the
453 bool "Clocksource for the H8300 platform" if COMPILE_TEST
454 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
456 This enables the clocksource for the H8300 platform with the
459 config CLKSRC_IMX_GPT
460 bool "Clocksource using i.MX GPT" if COMPILE_TEST
461 depends on ARM && CLKDEV_LOOKUP
465 bool "Low power clocksource found in the LPC" if COMPILE_TEST
466 select CLKSRC_OF if OF
470 Enable this option to use the Low Power controller timer