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.
172 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
173 bool "Clocksource PRCMU Timer sched_clock"
174 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
177 Use the always on PRCMU Timer as sched_clock
180 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
181 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
185 Support to use the timers of EFM32 SoCs as clock source and clock
188 config CLKSRC_LPC32XX
189 bool "Clocksource for LPC32XX" if COMPILE_TEST
190 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
195 Support for the LPC32XX clocksource.
197 config CLKSRC_PISTACHIO
198 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
202 Enables the clocksource for the Pistachio SoC.
205 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
206 depends on GENERIC_SCHED_CLOCK
207 select CLKSRC_OF if OF
209 This option enables support for Texas Instruments 32.768 Hz clocksource
210 available on many OMAP-like platforms.
213 bool "NPS400 clocksource driver" if COMPILE_TEST
214 depends on !PHYS_ADDR_T_64BIT
216 select CLKSRC_OF if OF
218 NPS400 clocksource support.
219 Got 64 bit counter with update rate up to 1000MHz.
220 This counter is accessed via couple of 32 bit memory mapped registers.
223 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
224 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
228 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
229 depends on GENERIC_SCHED_CLOCK
233 config ARM_ARCH_TIMER
235 select CLKSRC_OF if OF
236 select CLKSRC_ACPI if ACPI
238 config ARM_ARCH_TIMER_EVTSTREAM
239 bool "Support for ARM architected timer event stream generation"
240 default y if ARM_ARCH_TIMER
241 depends on ARM_ARCH_TIMER
243 This option enables support for event stream generation based on
244 the ARM architected timer. It is used for waking up CPUs executing
245 the wfe instruction at a frequency represented as a power-of-2
246 divisor of the clock rate.
247 The main use of the event stream is wfe-based timeouts of userspace
248 locking implementations. It might also be useful for imposing timeout
249 on wfe to safeguard against any programming errors in case an expected
250 event is not generated.
251 This must be disabled for hardware validation purposes to detect any
252 hardware anomalies of missing events.
254 config ARM_GLOBAL_TIMER
256 select CLKSRC_OF if OF
258 This options enables support for the ARM global timer unit
260 config ARM_TIMER_SP804
261 bool "Support for Dual Timer SP804 module"
262 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
264 select CLKSRC_OF if OF
266 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
268 depends on ARM_GLOBAL_TIMER
271 Use ARM global timer clock source as sched_clock
273 config ARMV7M_SYSTICK
274 bool "Support for the ARMv7M system time" if COMPILE_TEST
275 select CLKSRC_OF if OF
278 This options enables support for the ARMv7M system timer unit
281 select CLKSRC_OF if OF
282 def_bool SOC_AT91SAM9 || SOC_SAMA5
289 config CLKSRC_METAG_GENERIC
292 This option enables support for the Meta per-thread timers.
294 config CLKSRC_EXYNOS_MCT
295 bool "Exynos multi core timer driver" if COMPILE_TEST
298 Support for Multi Core Timer controller on Exynos SoCs.
300 config CLKSRC_SAMSUNG_PWM
301 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
302 depends on GENERIC_CLOCKEVENTS
305 This is a new clocksource driver for the PWM timer found in
306 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
307 for all devicetree enabled platforms. This driver will be
308 needed only on systems that do not have the Exynos MCT available.
311 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
312 depends on GENERIC_CLOCKEVENTS
316 Support for Freescale FlexTimer Module (FTM) timer.
322 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
324 config OXNAS_RPS_TIMER
325 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
326 depends on GENERIC_CLOCKEVENTS
330 This enables support for the Oxford Semiconductor OXNAS RPS timers.
332 config SYS_SUPPORTS_SH_CMT
336 bool "Mediatek timer driver" if COMPILE_TEST
337 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
341 Support for Mediatek timer driver.
343 config SYS_SUPPORTS_SH_MTU2
346 config SYS_SUPPORTS_SH_TMU
349 config SYS_SUPPORTS_EM_STI
353 bool "Renesas CMT timer driver" if COMPILE_TEST
354 depends on GENERIC_CLOCKEVENTS
356 default SYS_SUPPORTS_SH_CMT
358 This enables build of a clocksource and clockevent driver for
359 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
360 variants on a wide range of Mobile and Automotive SoCs from Renesas.
363 bool "Renesas MTU2 timer driver" if COMPILE_TEST
364 depends on GENERIC_CLOCKEVENTS
366 default SYS_SUPPORTS_SH_MTU2
368 This enables build of a clockevent driver for the Multi-Function
369 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
370 This hardware comes with 16 bit-timer registers.
373 bool "Renesas TMU timer driver" if COMPILE_TEST
374 depends on GENERIC_CLOCKEVENTS
376 default SYS_SUPPORTS_SH_TMU
378 This enables build of a clocksource and clockevent driver for
379 the 32-bit Timer Unit (TMU) hardware available on a wide range
383 bool "Renesas STI timer driver" if COMPILE_TEST
384 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
385 default SYS_SUPPORTS_EM_STI
387 This enables build of a clocksource and clockevent driver for
388 the 48-bit System Timer (STI) hardware available on a SoCs
389 such as EMEV2 from former NEC Electronics.
392 bool "Qualcomm MSM timer" if COMPILE_TEST
396 This enables the clocksource and the per CPU clockevent driver for the
399 config CLKSRC_VERSATILE
400 bool "ARM Versatile (Express) reference platforms clock source"
401 depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
403 default y if MFD_VEXPRESS_SYSREG
405 This option enables clock source based on free running
406 counter available in the "System Registers" block of
407 ARM Versatile, RealView and Versatile Express reference
410 config CLKSRC_MIPS_GIC
415 config CLKSRC_TANGO_XTAL
416 bool "Clocksource for Tango SoC" if COMPILE_TEST
421 This enables the clocksource for Tango SoC
424 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
425 depends on GENERIC_CLOCKEVENTS
429 This enables OST0 support available on PXA and SA-11x0
433 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
434 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
436 This enables the 8 bits timer for the H8300 platform.
439 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
440 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
442 This enables the 16 bits timer for the H8300 platform with the
446 bool "Clocksource for the H8300 platform" if COMPILE_TEST
447 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
449 This enables the clocksource for the H8300 platform with the
452 config CLKSRC_IMX_GPT
453 bool "Clocksource using i.MX GPT" if COMPILE_TEST
454 depends on ARM && CLKDEV_LOOKUP
458 bool "Low power clocksource found in the LPC" if COMPILE_TEST
459 select CLKSRC_OF if OF
463 Enable this option to use the Low Power controller timer