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1# SPDX-License-Identifier: GPL-2.0-only
2menu "Clock Source drivers"
3 depends on GENERIC_CLOCKEVENTS
4
5config TIMER_OF
6 bool
7 select TIMER_PROBE
8
9config TIMER_ACPI
10 bool
11 select TIMER_PROBE
12
13config TIMER_PROBE
14 bool
15
16config CLKSRC_I8253
17 bool
18
19config CLKEVT_I8253
20 bool
21
22config I8253_LOCK
23 bool
24
25config OMAP_DM_SYSTIMER
26 bool
27 select TIMER_OF
28
29config CLKBLD_I8253
30 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
31
32config CLKSRC_MMIO
33 bool
34
35config BCM2835_TIMER
36 bool "BCM2835 timer driver" if COMPILE_TEST
37 select CLKSRC_MMIO
38 help
39 Enables the support for the BCM2835 timer driver.
40
41config BCM_KONA_TIMER
42 bool "BCM mobile timer driver" if COMPILE_TEST
43 select CLKSRC_MMIO
44 help
45 Enables the support for the BCM Kona mobile timer driver.
46
47config DAVINCI_TIMER
48 bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
49 help
50 Enables the support for the TI DaVinci timer driver.
51
52config DIGICOLOR_TIMER
53 bool "Digicolor timer driver" if COMPILE_TEST
54 select CLKSRC_MMIO
55 depends on HAS_IOMEM
56 help
57 Enables the support for the digicolor timer driver.
58
59config OMAP_DM_TIMER
60 bool "OMAP dual-mode timer driver" if ARCH_K3 || COMPILE_TEST
61 default y if ARCH_K3
62 select TIMER_OF
63 help
64 Enables the support for the TI dual-mode timer driver.
65
66config DW_APB_TIMER
67 bool "DW APB timer driver" if COMPILE_TEST
68 help
69 Enables the support for the dw_apb timer.
70
71config DW_APB_TIMER_OF
72 bool
73 select DW_APB_TIMER
74 select TIMER_OF
75
76config FTTMR010_TIMER
77 bool "Faraday Technology timer driver" if COMPILE_TEST
78 depends on HAS_IOMEM
79 select CLKSRC_MMIO
80 select TIMER_OF
81 select MFD_SYSCON
82 help
83 Enables support for the Faraday Technology timer block
84 FTTMR010.
85
86config IXP4XX_TIMER
87 bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
88 depends on HAS_IOMEM
89 select CLKSRC_MMIO
90 select TIMER_OF
91 help
92 Enables support for the Intel XScale IXP4xx SoC timer.
93
94config ROCKCHIP_TIMER
95 bool "Rockchip timer driver" if COMPILE_TEST
96 depends on ARM || ARM64
97 select TIMER_OF
98 select CLKSRC_MMIO
99 help
100 Enables the support for the Rockchip timer driver.
101
102config ARMADA_370_XP_TIMER
103 bool "Armada 370 and XP timer driver" if COMPILE_TEST
104 depends on ARM
105 select TIMER_OF
106 select CLKSRC_MMIO
107 help
108 Enables the support for the Armada 370 and XP timer driver.
109
110config MESON6_TIMER
111 bool "Meson6 timer driver" if COMPILE_TEST
112 select CLKSRC_MMIO
113 help
114 Enables the support for the Meson6 timer driver.
115
116config ORION_TIMER
117 bool "Orion timer driver" if COMPILE_TEST
118 depends on ARM
119 select TIMER_OF
120 select CLKSRC_MMIO
121 help
122 Enables the support for the Orion timer driver
123
124config OWL_TIMER
125 bool "Owl timer driver" if COMPILE_TEST
126 select CLKSRC_MMIO
127 help
128 Enables the support for the Actions Semi Owl timer driver.
129
130config RDA_TIMER
131 bool "RDA timer driver" if COMPILE_TEST
132 select CLKSRC_MMIO
133 select TIMER_OF
134 help
135 Enables the support for the RDA Micro timer driver.
136
137config SUN4I_TIMER
138 bool "Sun4i timer driver" if COMPILE_TEST
139 depends on HAS_IOMEM
140 select CLKSRC_MMIO
141 select TIMER_OF
142 help
143 Enables support for the Sun4i timer.
144
145config SUN5I_HSTIMER
146 bool "Sun5i timer driver" if COMPILE_TEST
147 select CLKSRC_MMIO
148 depends on COMMON_CLK
149 help
150 Enables support the Sun5i timer.
151
152config TEGRA_TIMER
153 bool "Tegra timer driver" if COMPILE_TEST
154 select CLKSRC_MMIO
155 select TIMER_OF
156 depends on ARCH_TEGRA || COMPILE_TEST
157 help
158 Enables support for the Tegra driver.
159
160config TEGRA186_TIMER
161 bool "NVIDIA Tegra186 timer driver"
162 depends on ARCH_TEGRA || COMPILE_TEST
163 depends on WATCHDOG && WATCHDOG_CORE
164 help
165 Enables support for the timers and watchdogs found on NVIDIA
166 Tegra186 and later SoCs.
167
168config VT8500_TIMER
169 bool "VT8500 timer driver" if COMPILE_TEST
170 depends on HAS_IOMEM
171 help
172 Enables support for the VT8500 driver.
173
174config NPCM7XX_TIMER
175 bool "NPCM7xx timer driver" if COMPILE_TEST
176 depends on HAS_IOMEM
177 select TIMER_OF
178 select CLKSRC_MMIO
179 help
180 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
181 where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
182
183config CADENCE_TTC_TIMER
184 bool "Cadence TTC timer driver" if COMPILE_TEST
185 depends on COMMON_CLK
186 help
187 Enables support for the Cadence TTC driver.
188
189config ASM9260_TIMER
190 bool "ASM9260 timer driver" if COMPILE_TEST
191 select CLKSRC_MMIO
192 select TIMER_OF
193 help
194 Enables support for the ASM9260 timer.
195
196config CLKSRC_NOMADIK_MTU
197 bool "Nomakdik clocksource driver" if COMPILE_TEST
198 depends on ARM
199 select CLKSRC_MMIO
200 help
201 Support for Multi Timer Unit. MTU provides access
202 to multiple interrupt generating programmable
203 32-bit free running decrementing counters.
204
205config CLKSRC_DBX500_PRCMU
206 bool "Clocksource PRCMU Timer" if COMPILE_TEST
207 depends on HAS_IOMEM
208 help
209 Use the always on PRCMU Timer as clocksource.
210
211config CLPS711X_TIMER
212 bool "Cirrus Logic timer driver" if COMPILE_TEST
213 select CLKSRC_MMIO
214 help
215 Enables support for the Cirrus Logic PS711 timer.
216
217config MXS_TIMER
218 bool "MXS timer driver" if COMPILE_TEST
219 select CLKSRC_MMIO
220 select STMP_DEVICE
221 help
222 Enables support for the MXS timer.
223
224config NSPIRE_TIMER
225 bool "NSpire timer driver" if COMPILE_TEST
226 select CLKSRC_MMIO
227 help
228 Enables support for the Nspire timer.
229
230config KEYSTONE_TIMER
231 bool "Keystone timer driver" if COMPILE_TEST
232 depends on ARM || ARM64
233 select CLKSRC_MMIO
234 help
235 Enables support for the Keystone timer.
236
237config INTEGRATOR_AP_TIMER
238 bool "Integrator-AP timer driver" if COMPILE_TEST
239 select CLKSRC_MMIO
240 help
241 Enables support for the Integrator-AP timer.
242
243config CLKSRC_LPC32XX
244 bool "Clocksource for LPC32XX" if COMPILE_TEST
245 depends on HAS_IOMEM
246 depends on ARM
247 select CLKSRC_MMIO
248 select TIMER_OF
249 help
250 Support for the LPC32XX clocksource.
251
252config CLKSRC_PISTACHIO
253 bool "Clocksource for Pistachio SoC"
254 depends on HAS_IOMEM
255 depends on MIPS || COMPILE_TEST
256 select TIMER_OF
257 help
258 Enables the clocksource for the Pistachio SoC.
259
260config CLKSRC_TI_32K
261 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
262 depends on GENERIC_SCHED_CLOCK
263 select TIMER_OF if OF
264 help
265 This option enables support for Texas Instruments 32.768 Hz clocksource
266 available on many OMAP-like platforms.
267
268config CLKSRC_STM32
269 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
270 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
271 select CLKSRC_MMIO
272 select TIMER_OF
273
274config CLKSRC_STM32_LP
275 bool "Low power clocksource for STM32 SoCs"
276 depends on MFD_STM32_LPTIMER || COMPILE_TEST
277
278config CLKSRC_MPS2
279 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
280 depends on GENERIC_SCHED_CLOCK
281 select CLKSRC_MMIO
282 select TIMER_OF
283
284config ARC_TIMERS
285 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
286 depends on GENERIC_SCHED_CLOCK
287 select TIMER_OF
288 help
289 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
290 (ARC700 as well as ARC HS38).
291 TIMER0 serves as clockevent while TIMER1 provides clocksource.
292
293config ARC_TIMERS_64BIT
294 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
295 depends on ARC_TIMERS
296 select TIMER_OF
297 help
298 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
299 RTC is implemented inside the core, while GFRC sits outside the core in
300 ARConnect IP block. Driver automatically picks one of them for clocksource
301 as appropriate.
302
303config ARM_ARCH_TIMER
304 bool
305 select TIMER_OF if OF
306 select TIMER_ACPI if ACPI
307
308config ARM_ARCH_TIMER_EVTSTREAM
309 bool "Enable ARM architected timer event stream generation by default"
310 default y if ARM_ARCH_TIMER
311 depends on ARM_ARCH_TIMER
312 help
313 This option enables support by default for event stream generation
314 based on the ARM architected timer. It is used for waking up CPUs
315 executing the wfe instruction at a frequency represented as a
316 power-of-2 divisor of the clock rate. The behaviour can also be
317 overridden on the command line using the
318 clocksource.arm_arch_timer.evtstream parameter.
319 The main use of the event stream is wfe-based timeouts of userspace
320 locking implementations. It might also be useful for imposing timeout
321 on wfe to safeguard against any programming errors in case an expected
322 event is not generated.
323 This must be disabled for hardware validation purposes to detect any
324 hardware anomalies of missing events.
325
326config ARM_ARCH_TIMER_OOL_WORKAROUND
327 bool
328
329config FSL_ERRATUM_A008585
330 bool "Workaround for Freescale/NXP Erratum A-008585"
331 default y
332 depends on ARM_ARCH_TIMER && ARM64
333 select ARM_ARCH_TIMER_OOL_WORKAROUND
334 help
335 This option enables a workaround for Freescale/NXP Erratum
336 A-008585 ("ARM generic timer may contain an erroneous
337 value"). The workaround will only be active if the
338 fsl,erratum-a008585 property is found in the timer node.
339
340config HISILICON_ERRATUM_161010101
341 bool "Workaround for Hisilicon Erratum 161010101"
342 default y
343 select ARM_ARCH_TIMER_OOL_WORKAROUND
344 depends on ARM_ARCH_TIMER && ARM64
345 help
346 This option enables a workaround for Hisilicon Erratum
347 161010101. The workaround will be active if the hisilicon,erratum-161010101
348 property is found in the timer node.
349
350config ARM64_ERRATUM_858921
351 bool "Workaround for Cortex-A73 erratum 858921"
352 default y
353 select ARM_ARCH_TIMER_OOL_WORKAROUND
354 depends on ARM_ARCH_TIMER && ARM64
355 help
356 This option enables a workaround applicable to Cortex-A73
357 (all versions), whose counter may return incorrect values.
358 The workaround will be dynamically enabled when an affected
359 core is detected.
360
361config SUN50I_ERRATUM_UNKNOWN1
362 bool "Workaround for Allwinner A64 erratum UNKNOWN1"
363 default y
364 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
365 select ARM_ARCH_TIMER_OOL_WORKAROUND
366 help
367 This option enables a workaround for instability in the timer on
368 the Allwinner A64 SoC. The workaround will only be active if the
369 allwinner,erratum-unknown1 property is found in the timer node.
370
371config ARM_GLOBAL_TIMER
372 bool "Support for the ARM global timer" if COMPILE_TEST
373 select TIMER_OF if OF
374 depends on ARM
375 help
376 This option enables support for the ARM global timer unit.
377
378config ARM_GT_INITIAL_PRESCALER_VAL
379 int "ARM global timer initial prescaler value"
380 default 2 if ARCH_ZYNQ
381 default 1
382 depends on ARM_GLOBAL_TIMER
383 help
384 When the ARM global timer initializes, its current rate is declared
385 to the kernel and maintained forever. Should its parent clock
386 change, the driver tries to fix the timer's internal prescaler.
387 On some machs (i.e. Zynq) the initial prescaler value thus poses
388 bounds about how much the parent clock is allowed to decrease or
389 increase wrt the initial clock value.
390 This affects CPU_FREQ max delta from the initial frequency.
391
392config ARM_TIMER_SP804
393 bool "Support for Dual Timer SP804 module" if COMPILE_TEST
394 depends on GENERIC_SCHED_CLOCK && HAVE_CLK
395 select CLKSRC_MMIO
396 select TIMER_OF if OF
397
398config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
399 bool
400 depends on ARM_GLOBAL_TIMER
401 default y
402 help
403 Use ARM global timer clock source as sched_clock.
404
405config ARMV7M_SYSTICK
406 bool "Support for the ARMv7M system time" if COMPILE_TEST
407 select TIMER_OF if OF
408 select CLKSRC_MMIO
409 help
410 This option enables support for the ARMv7M system timer unit.
411
412config ATMEL_PIT
413 bool "Atmel PIT support" if COMPILE_TEST
414 depends on HAS_IOMEM
415 select TIMER_OF if OF
416 help
417 Support for the Periodic Interval Timer found on Atmel SoCs.
418
419config ATMEL_ST
420 bool "Atmel ST timer support" if COMPILE_TEST
421 depends on HAS_IOMEM
422 select TIMER_OF
423 select MFD_SYSCON
424 help
425 Support for the Atmel ST timer.
426
427config ATMEL_TCB_CLKSRC
428 bool "Atmel TC Block timer driver" if COMPILE_TEST
429 depends on ARM && HAS_IOMEM
430 select TIMER_OF if OF
431 help
432 Support for Timer Counter Blocks on Atmel SoCs.
433
434config CLKSRC_EXYNOS_MCT
435 bool "Exynos multi core timer driver" if COMPILE_TEST
436 depends on ARM || ARM64
437 depends on ARCH_ARTPEC || ARCH_EXYNOS || COMPILE_TEST
438 help
439 Support for Multi Core Timer controller on Exynos SoCs.
440
441config CLKSRC_SAMSUNG_PWM
442 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
443 depends on HAS_IOMEM
444 depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST
445 help
446 This is a new clocksource driver for the PWM timer found in
447 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
448 for all devicetree enabled platforms. This driver will be
449 needed only on systems that do not have the Exynos MCT available.
450
451config FSL_FTM_TIMER
452 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
453 depends on HAS_IOMEM
454 select CLKSRC_MMIO
455 help
456 Support for Freescale FlexTimer Module (FTM) timer.
457
458config VF_PIT_TIMER
459 bool
460 select CLKSRC_MMIO
461 help
462 Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
463
464config OXNAS_RPS_TIMER
465 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
466 select TIMER_OF
467 select CLKSRC_MMIO
468 help
469 This enables support for the Oxford Semiconductor OXNAS RPS timers.
470
471config SYS_SUPPORTS_SH_CMT
472 bool
473
474config MTK_TIMER
475 bool "Mediatek timer driver" if COMPILE_TEST
476 depends on HAS_IOMEM
477 select TIMER_OF
478 select CLKSRC_MMIO
479 help
480 Support for Mediatek timer driver.
481
482config SPRD_TIMER
483 bool "Spreadtrum timer driver" if EXPERT
484 depends on HAS_IOMEM
485 depends on (ARCH_SPRD || COMPILE_TEST)
486 default ARCH_SPRD
487 select TIMER_OF
488 help
489 Enables support for the Spreadtrum timer driver.
490
491config SYS_SUPPORTS_SH_MTU2
492 bool
493
494config SYS_SUPPORTS_SH_TMU
495 bool
496
497config SYS_SUPPORTS_EM_STI
498 bool
499
500config CLKSRC_JCORE_PIT
501 bool "J-Core PIT timer driver" if COMPILE_TEST
502 depends on OF
503 depends on HAS_IOMEM
504 select CLKSRC_MMIO
505 help
506 This enables build of clocksource and clockevent driver for
507 the integrated PIT in the J-Core synthesizable, open source SoC.
508
509config SH_TIMER_CMT
510 bool "Renesas CMT timer driver" if COMPILE_TEST
511 depends on HAS_IOMEM
512 default SYS_SUPPORTS_SH_CMT
513 help
514 This enables build of a clocksource and clockevent driver for
515 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
516 variants on a wide range of Mobile and Automotive SoCs from Renesas.
517
518config SH_TIMER_MTU2
519 bool "Renesas MTU2 timer driver" if COMPILE_TEST
520 depends on HAS_IOMEM
521 default SYS_SUPPORTS_SH_MTU2
522 help
523 This enables build of a clockevent driver for the Multi-Function
524 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
525 This hardware comes with 16-bit timer registers.
526
527config RENESAS_OSTM
528 bool "Renesas OSTM timer driver"
529 depends on ARCH_RENESAS || COMPILE_TEST
530 select CLKSRC_MMIO
531 select TIMER_OF
532 help
533 Enables the support for the Renesas OSTM.
534
535config SH_TIMER_TMU
536 bool "Renesas TMU timer driver" if COMPILE_TEST
537 depends on HAS_IOMEM
538 default SYS_SUPPORTS_SH_TMU
539 help
540 This enables build of a clocksource and clockevent driver for
541 the 32-bit Timer Unit (TMU) hardware available on a wide range
542 SoCs from Renesas.
543
544config EM_TIMER_STI
545 bool "Renesas STI timer driver" if COMPILE_TEST
546 depends on HAS_IOMEM
547 default SYS_SUPPORTS_EM_STI
548 help
549 This enables build of a clocksource and clockevent driver for
550 the 48-bit System Timer (STI) hardware available on a SoCs
551 such as EMEV2 from former NEC Electronics.
552
553config CLKSRC_QCOM
554 bool "Qualcomm MSM timer" if COMPILE_TEST
555 depends on ARM
556 select TIMER_OF
557 help
558 This enables the clocksource and the per CPU clockevent driver for the
559 Qualcomm SoCs.
560
561config CLKSRC_VERSATILE
562 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
563 depends on GENERIC_SCHED_CLOCK
564 select TIMER_OF
565 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
566 help
567 This option enables clock source based on free running
568 counter available in the "System Registers" block of
569 ARM Versatile and Versatile Express reference platforms.
570
571config CLKSRC_MIPS_GIC
572 bool
573 depends on MIPS_GIC
574 select CLOCKSOURCE_WATCHDOG
575 select TIMER_OF
576
577config CLKSRC_PXA
578 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
579 depends on HAS_IOMEM
580 select CLKSRC_MMIO
581 help
582 This enables OST0 support available on PXA and SA-11x0
583 platforms.
584
585config CLKSRC_IMX_GPT
586 bool "Clocksource using i.MX GPT" if COMPILE_TEST
587 depends on (ARM || ARM64) && HAVE_CLK
588 select CLKSRC_MMIO
589
590config CLKSRC_IMX_TPM
591 bool "Clocksource using i.MX TPM" if COMPILE_TEST
592 depends on (ARM || ARM64) && HAVE_CLK
593 select CLKSRC_MMIO
594 select TIMER_OF
595 help
596 Enable this option to use IMX Timer/PWM Module (TPM) timer as
597 clocksource.
598
599config TIMER_IMX_SYS_CTR
600 bool "i.MX system counter timer" if COMPILE_TEST
601 select TIMER_OF
602 help
603 Enable this option to use i.MX system counter timer as a
604 clockevent.
605
606config CLKSRC_ST_LPC
607 bool "Low power clocksource found in the LPC" if COMPILE_TEST
608 select TIMER_OF if OF
609 depends on HAS_IOMEM
610 select CLKSRC_MMIO
611 help
612 Enable this option to use the Low Power controller timer
613 as clocksource.
614
615config GXP_TIMER
616 bool "GXP timer driver" if COMPILE_TEST && !ARCH_HPE
617 default ARCH_HPE
618 select TIMER_OF if OF
619 help
620 Provides a driver for the timer control found on HPE
621 GXP SOCs. This is required for all GXP SOCs.
622
623config RISCV_TIMER
624 bool "Timer for the RISC-V platform" if COMPILE_TEST
625 depends on GENERIC_SCHED_CLOCK && RISCV && RISCV_SBI
626 select TIMER_PROBE
627 select TIMER_OF
628 help
629 This enables the per-hart timer built into all RISC-V systems, which
630 is accessed via both the SBI and the rdcycle instruction. This is
631 required for all RISC-V systems.
632
633config CLINT_TIMER
634 bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
635 depends on GENERIC_SCHED_CLOCK && RISCV
636 select TIMER_PROBE
637 select TIMER_OF
638 help
639 This option enables the CLINT timer for RISC-V systems. The CLINT
640 driver is usually used for NoMMU RISC-V systems.
641
642config CSKY_MP_TIMER
643 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
644 depends on CSKY
645 select TIMER_OF
646 help
647 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
648 system.
649 csky,mptimer is not only used in SMP system, it also could be used in
650 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
651
652config GX6605S_TIMER
653 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
654 depends on CSKY
655 select CLKSRC_MMIO
656 select TIMER_OF
657 help
658 This option enables support for gx6605s SOC's timer.
659
660config MILBEAUT_TIMER
661 bool "Milbeaut timer driver" if COMPILE_TEST
662 depends on OF
663 depends on ARM
664 select TIMER_OF
665 select CLKSRC_MMIO
666 help
667 Enables the support for Milbeaut timer driver.
668
669config MSC313E_TIMER
670 bool "MSC313E timer driver" if COMPILE_TEST
671 select TIMER_OF
672 select CLKSRC_MMIO
673 help
674 Enables support for the MStar MSC313E timer driver.
675 This provides access to multiple interrupt generating
676 programmable 32-bit free running incrementing counters.
677
678config INGENIC_TIMER
679 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
680 default MACH_INGENIC
681 depends on MIPS || COMPILE_TEST
682 depends on COMMON_CLK
683 select MFD_SYSCON
684 select TIMER_OF
685 select IRQ_DOMAIN
686 help
687 Support for the timer/counter unit of the Ingenic JZ SoCs.
688
689config INGENIC_SYSOST
690 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
691 depends on MIPS || COMPILE_TEST
692 depends on COMMON_CLK
693 select MFD_SYSCON
694 select TIMER_OF
695 select IRQ_DOMAIN
696 help
697 Support for the SYSOST of the Ingenic X Series SoCs.
698
699config INGENIC_OST
700 bool "Clocksource using the OST in Ingenic JZ SoCs"
701 depends on MIPS || COMPILE_TEST
702 depends on COMMON_CLK
703 select MFD_SYSCON
704 help
705 Support for the Operating System Timer of the Ingenic JZ SoCs.
706
707config MICROCHIP_PIT64B
708 bool "Microchip PIT64B support"
709 depends on OF || COMPILE_TEST
710 select TIMER_OF
711 help
712 This option enables Microchip PIT64B timer for Atmel
713 based system. It supports the oneshot, the periodic
714 modes and high resolution. It is used as a clocksource
715 and a clockevent.
716
717config GOLDFISH_TIMER
718 bool "Clocksource using goldfish-rtc"
719 depends on M68K || COMPILE_TEST
720 depends on RTC_DRV_GOLDFISH
721 help
722 Support for the timer/counter of goldfish-rtc
723
724endmenu
1menu "Clock Source drivers"
2 depends on !ARCH_USES_GETTIMEOFFSET
3
4config CLKSRC_OF
5 bool
6 select CLKSRC_PROBE
7
8config CLKSRC_ACPI
9 bool
10 select CLKSRC_PROBE
11
12config CLKSRC_PROBE
13 bool
14
15config CLKSRC_I8253
16 bool
17
18config CLKEVT_I8253
19 bool
20
21config I8253_LOCK
22 bool
23
24config CLKBLD_I8253
25 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
26
27config CLKSRC_MMIO
28 bool
29
30config BCM2835_TIMER
31 bool "BCM2835 timer driver" if COMPILE_TEST
32 depends on GENERIC_CLOCKEVENTS
33 select CLKSRC_MMIO
34 help
35 Enables the support for the BCM2835 timer driver.
36
37config BCM_KONA_TIMER
38 bool "BCM mobile timer driver" if COMPILE_TEST
39 depends on GENERIC_CLOCKEVENTS
40 select CLKSRC_MMIO
41 help
42 Enables the support for the BCM Kona mobile timer driver.
43
44config DIGICOLOR_TIMER
45 bool "Digicolor timer driver" if COMPILE_TEST
46 depends on GENERIC_CLOCKEVENTS
47 select CLKSRC_MMIO
48 depends on HAS_IOMEM
49 help
50 Enables the support for the digicolor timer driver.
51
52config DW_APB_TIMER
53 bool "DW APB timer driver" if COMPILE_TEST
54 depends on GENERIC_CLOCKEVENTS
55 help
56 Enables the support for the dw_apb timer.
57
58config DW_APB_TIMER_OF
59 bool
60 select DW_APB_TIMER
61 select CLKSRC_OF
62
63config ROCKCHIP_TIMER
64 bool "Rockchip timer driver" if COMPILE_TEST
65 depends on ARM || ARM64
66 select CLKSRC_OF
67 help
68 Enables the support for the rockchip timer driver.
69
70config ARMADA_370_XP_TIMER
71 bool "Armada 370 and XP timer driver" if COMPILE_TEST
72 depends on ARM
73 select CLKSRC_OF
74 select CLKSRC_MMIO
75 help
76 Enables the support for the Armada 370 and XP timer driver.
77
78config MESON6_TIMER
79 bool "Meson6 timer driver" if COMPILE_TEST
80 depends on GENERIC_CLOCKEVENTS
81 select CLKSRC_MMIO
82 help
83 Enables the support for the Meson6 timer driver.
84
85config ORION_TIMER
86 bool "Orion timer driver" if COMPILE_TEST
87 depends on ARM
88 select CLKSRC_OF
89 select CLKSRC_MMIO
90 help
91 Enables the support for the Orion timer driver
92
93config SUN4I_TIMER
94 bool "Sun4i timer driver" if COMPILE_TEST
95 depends on GENERIC_CLOCKEVENTS
96 depends on HAS_IOMEM
97 select CLKSRC_MMIO
98 help
99 Enables support for the Sun4i timer.
100
101config SUN5I_HSTIMER
102 bool "Sun5i timer driver" if COMPILE_TEST
103 select CLKSRC_MMIO
104 depends on COMMON_CLK
105 help
106 Enables support the Sun5i timer.
107
108config TEGRA_TIMER
109 bool "Tegra timer driver" if COMPILE_TEST
110 select CLKSRC_MMIO
111 depends on ARM
112 help
113 Enables support for the Tegra driver.
114
115config VT8500_TIMER
116 bool "VT8500 timer driver" if COMPILE_TEST
117 depends on GENERIC_CLOCKEVENTS
118 depends on HAS_IOMEM
119 help
120 Enables support for the VT8500 driver.
121
122config CADENCE_TTC_TIMER
123 bool "Cadence TTC timer driver" if COMPILE_TEST
124 depends on COMMON_CLK
125 help
126 Enables support for the cadence ttc driver.
127
128config ASM9260_TIMER
129 bool "ASM9260 timer driver" if COMPILE_TEST
130 depends on GENERIC_CLOCKEVENTS
131 select CLKSRC_MMIO
132 select CLKSRC_OF
133 help
134 Enables support for the ASM9260 timer.
135
136config CLKSRC_NOMADIK_MTU
137 bool "Nomakdik clocksource driver" if COMPILE_TEST
138 depends on ARM
139 select CLKSRC_MMIO
140 help
141 Support for Multi Timer Unit. MTU provides access
142 to multiple interrupt generating programmable
143 32-bit free running decrementing counters.
144
145config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
146 bool
147 depends on CLKSRC_NOMADIK_MTU
148 help
149 Use the Multi Timer Unit as the sched_clock.
150
151config CLKSRC_DBX500_PRCMU
152 bool "Clocksource PRCMU Timer" if COMPILE_TEST
153 depends on GENERIC_CLOCKEVENTS
154 depends on HAS_IOMEM
155 help
156 Use the always on PRCMU Timer as clocksource
157
158config CLPS711X_TIMER
159 bool "Cirrus logic timer driver" if COMPILE_TEST
160 depends on GENERIC_CLOCKEVENTS
161 select CLKSRC_MMIO
162 help
163 Enables support for the Cirrus Logic PS711 timer.
164
165config ATLAS7_TIMER
166 bool "Atlas7 timer driver" if COMPILE_TEST
167 depends on GENERIC_CLOCKEVENTS
168 select CLKSRC_MMIO
169 help
170 Enables support for the Atlas7 timer.
171
172config MOXART_TIMER
173 bool "Moxart timer driver" if COMPILE_TEST
174 depends on GENERIC_CLOCKEVENTS
175 select CLKSRC_MMIO
176 help
177 Enables support for the Moxart timer.
178
179config MXS_TIMER
180 bool "Mxs timer driver" if COMPILE_TEST
181 depends on GENERIC_CLOCKEVENTS
182 select CLKSRC_MMIO
183 select STMP_DEVICE
184 help
185 Enables support for the Mxs timer.
186
187config PRIMA2_TIMER
188 bool "Prima2 timer driver" if COMPILE_TEST
189 depends on GENERIC_CLOCKEVENTS
190 select CLKSRC_MMIO
191 help
192 Enables support for the Prima2 timer.
193
194config U300_TIMER
195 bool "U300 timer driver" if COMPILE_TEST
196 depends on GENERIC_CLOCKEVENTS
197 depends on ARM
198 select CLKSRC_MMIO
199 help
200 Enables support for the U300 timer.
201
202config NSPIRE_TIMER
203 bool "NSpire timer driver" if COMPILE_TEST
204 depends on GENERIC_CLOCKEVENTS
205 select CLKSRC_MMIO
206 help
207 Enables support for the Nspire timer.
208
209config KEYSTONE_TIMER
210 bool "Keystone timer driver" if COMPILE_TEST
211 depends on GENERIC_CLOCKEVENTS
212 depends on ARM || ARM64
213 select CLKSRC_MMIO
214 help
215 Enables support for the Keystone timer.
216
217config INTEGRATOR_AP_TIMER
218 bool "Integrator-ap timer driver" if COMPILE_TEST
219 depends on GENERIC_CLOCKEVENTS
220 select CLKSRC_MMIO
221 help
222 Enables support for the Integrator-ap timer.
223
224config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
225 bool "Clocksource PRCMU Timer sched_clock"
226 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
227 default y
228 help
229 Use the always on PRCMU Timer as sched_clock
230
231config CLKSRC_EFM32
232 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
233 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
234 select CLKSRC_MMIO
235 default ARCH_EFM32
236 help
237 Support to use the timers of EFM32 SoCs as clock source and clock
238 event device.
239
240config CLKSRC_LPC32XX
241 bool "Clocksource for LPC32XX" if COMPILE_TEST
242 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
243 depends on ARM
244 select CLKSRC_MMIO
245 select CLKSRC_OF
246 help
247 Support for the LPC32XX clocksource.
248
249config CLKSRC_PISTACHIO
250 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
251 depends on HAS_IOMEM
252 select CLKSRC_OF
253 help
254 Enables the clocksource for the Pistachio SoC.
255
256config CLKSRC_TI_32K
257 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
258 depends on GENERIC_SCHED_CLOCK
259 select CLKSRC_OF if OF
260 help
261 This option enables support for Texas Instruments 32.768 Hz clocksource
262 available on many OMAP-like platforms.
263
264config CLKSRC_NPS
265 bool "NPS400 clocksource driver" if COMPILE_TEST
266 depends on !PHYS_ADDR_T_64BIT
267 select CLKSRC_MMIO
268 select CLKSRC_OF if OF
269 help
270 NPS400 clocksource support.
271 Got 64 bit counter with update rate up to 1000MHz.
272 This counter is accessed via couple of 32 bit memory mapped registers.
273
274config CLKSRC_STM32
275 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
276 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
277 select CLKSRC_MMIO
278
279config CLKSRC_MPS2
280 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
281 depends on GENERIC_SCHED_CLOCK
282 select CLKSRC_MMIO
283 select CLKSRC_OF
284
285config ARC_TIMERS
286 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
287 depends on GENERIC_CLOCKEVENTS
288 select CLKSRC_OF
289 help
290 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
291 (ARC700 as well as ARC HS38).
292 TIMER0 serves as clockevent while TIMER1 provides clocksource
293
294config ARC_TIMERS_64BIT
295 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
296 depends on GENERIC_CLOCKEVENTS
297 depends on ARC_TIMERS
298 select CLKSRC_OF
299 help
300 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
301 RTC is implemented inside the core, while GFRC sits outside the core in
302 ARConnect IP block. Driver automatically picks one of them for clocksource
303 as appropriate.
304
305config ARM_ARCH_TIMER
306 bool
307 select CLKSRC_OF if OF
308 select CLKSRC_ACPI if ACPI
309
310config ARM_ARCH_TIMER_EVTSTREAM
311 bool "Enable ARM architected timer event stream generation by default"
312 default y if ARM_ARCH_TIMER
313 depends on ARM_ARCH_TIMER
314 help
315 This option enables support by default for event stream generation
316 based on the ARM architected timer. It is used for waking up CPUs
317 executing the wfe instruction at a frequency represented as a
318 power-of-2 divisor of the clock rate. The behaviour can also be
319 overridden on the command line using the
320 clocksource.arm_arch_timer.evtstream parameter.
321 The main use of the event stream is wfe-based timeouts of userspace
322 locking implementations. It might also be useful for imposing timeout
323 on wfe to safeguard against any programming errors in case an expected
324 event is not generated.
325 This must be disabled for hardware validation purposes to detect any
326 hardware anomalies of missing events.
327
328config FSL_ERRATUM_A008585
329 bool "Workaround for Freescale/NXP Erratum A-008585"
330 default y
331 depends on ARM_ARCH_TIMER && ARM64
332 help
333 This option enables a workaround for Freescale/NXP Erratum
334 A-008585 ("ARM generic timer may contain an erroneous
335 value"). The workaround will only be active if the
336 fsl,erratum-a008585 property is found in the timer node.
337
338config ARM_GLOBAL_TIMER
339 bool "Support for the ARM global timer" if COMPILE_TEST
340 select CLKSRC_OF if OF
341 depends on ARM
342 help
343 This options enables support for the ARM global timer unit
344
345config ARM_TIMER_SP804
346 bool "Support for Dual Timer SP804 module"
347 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
348 select CLKSRC_MMIO
349 select CLKSRC_OF if OF
350
351config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
352 bool
353 depends on ARM_GLOBAL_TIMER
354 default y
355 help
356 Use ARM global timer clock source as sched_clock
357
358config ARMV7M_SYSTICK
359 bool "Support for the ARMv7M system time" if COMPILE_TEST
360 select CLKSRC_OF if OF
361 select CLKSRC_MMIO
362 help
363 This options enables support for the ARMv7M system timer unit
364
365config ATMEL_PIT
366 select CLKSRC_OF if OF
367 def_bool SOC_AT91SAM9 || SOC_SAMA5
368
369config ATMEL_ST
370 bool "Atmel ST timer support" if COMPILE_TEST
371 depends on GENERIC_CLOCKEVENTS
372 select CLKSRC_OF
373 select MFD_SYSCON
374 help
375 Support for the Atmel ST timer.
376
377config CLKSRC_METAG_GENERIC
378 def_bool y if METAG
379 help
380 This option enables support for the Meta per-thread timers.
381
382config CLKSRC_EXYNOS_MCT
383 bool "Exynos multi core timer driver" if COMPILE_TEST
384 depends on ARM || ARM64
385 help
386 Support for Multi Core Timer controller on Exynos SoCs.
387
388config CLKSRC_SAMSUNG_PWM
389 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
390 depends on GENERIC_CLOCKEVENTS
391 depends on HAS_IOMEM
392 help
393 This is a new clocksource driver for the PWM timer found in
394 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
395 for all devicetree enabled platforms. This driver will be
396 needed only on systems that do not have the Exynos MCT available.
397
398config FSL_FTM_TIMER
399 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
400 depends on GENERIC_CLOCKEVENTS
401 depends on HAS_IOMEM
402 select CLKSRC_MMIO
403 help
404 Support for Freescale FlexTimer Module (FTM) timer.
405
406config VF_PIT_TIMER
407 bool
408 select CLKSRC_MMIO
409 help
410 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
411
412config OXNAS_RPS_TIMER
413 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
414 depends on GENERIC_CLOCKEVENTS
415 select CLKSRC_OF
416 select CLKSRC_MMIO
417 help
418 This enables support for the Oxford Semiconductor OXNAS RPS timers.
419
420config SYS_SUPPORTS_SH_CMT
421 bool
422
423config MTK_TIMER
424 bool "Mediatek timer driver" if COMPILE_TEST
425 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
426 select CLKSRC_OF
427 select CLKSRC_MMIO
428 help
429 Support for Mediatek timer driver.
430
431config SYS_SUPPORTS_SH_MTU2
432 bool
433
434config SYS_SUPPORTS_SH_TMU
435 bool
436
437config SYS_SUPPORTS_EM_STI
438 bool
439
440config CLKSRC_JCORE_PIT
441 bool "J-Core PIT timer driver" if COMPILE_TEST
442 depends on OF
443 depends on GENERIC_CLOCKEVENTS
444 depends on HAS_IOMEM
445 select CLKSRC_MMIO
446 help
447 This enables build of clocksource and clockevent driver for
448 the integrated PIT in the J-Core synthesizable, open source SoC.
449
450config SH_TIMER_CMT
451 bool "Renesas CMT timer driver" if COMPILE_TEST
452 depends on GENERIC_CLOCKEVENTS
453 depends on HAS_IOMEM
454 default SYS_SUPPORTS_SH_CMT
455 help
456 This enables build of a clocksource and clockevent driver for
457 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
458 variants on a wide range of Mobile and Automotive SoCs from Renesas.
459
460config SH_TIMER_MTU2
461 bool "Renesas MTU2 timer driver" if COMPILE_TEST
462 depends on GENERIC_CLOCKEVENTS
463 depends on HAS_IOMEM
464 default SYS_SUPPORTS_SH_MTU2
465 help
466 This enables build of a clockevent driver for the Multi-Function
467 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
468 This hardware comes with 16 bit-timer registers.
469
470config SH_TIMER_TMU
471 bool "Renesas TMU timer driver" if COMPILE_TEST
472 depends on GENERIC_CLOCKEVENTS
473 depends on HAS_IOMEM
474 default SYS_SUPPORTS_SH_TMU
475 help
476 This enables build of a clocksource and clockevent driver for
477 the 32-bit Timer Unit (TMU) hardware available on a wide range
478 SoCs from Renesas.
479
480config EM_TIMER_STI
481 bool "Renesas STI timer driver" if COMPILE_TEST
482 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
483 default SYS_SUPPORTS_EM_STI
484 help
485 This enables build of a clocksource and clockevent driver for
486 the 48-bit System Timer (STI) hardware available on a SoCs
487 such as EMEV2 from former NEC Electronics.
488
489config CLKSRC_QCOM
490 bool "Qualcomm MSM timer" if COMPILE_TEST
491 depends on ARM
492 select CLKSRC_OF
493 help
494 This enables the clocksource and the per CPU clockevent driver for the
495 Qualcomm SoCs.
496
497config CLKSRC_VERSATILE
498 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
499 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
500 select CLKSRC_OF
501 default y if MFD_VEXPRESS_SYSREG
502 help
503 This option enables clock source based on free running
504 counter available in the "System Registers" block of
505 ARM Versatile, RealView and Versatile Express reference
506 platforms.
507
508config CLKSRC_MIPS_GIC
509 bool
510 depends on MIPS_GIC
511 select CLKSRC_OF
512
513config CLKSRC_TANGO_XTAL
514 bool "Clocksource for Tango SoC" if COMPILE_TEST
515 depends on ARM
516 select CLKSRC_OF
517 select CLKSRC_MMIO
518 help
519 This enables the clocksource for Tango SoC
520
521config CLKSRC_PXA
522 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
523 depends on GENERIC_CLOCKEVENTS
524 depends on HAS_IOMEM
525 select CLKSRC_MMIO
526 help
527 This enables OST0 support available on PXA and SA-11x0
528 platforms.
529
530config H8300_TMR8
531 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
532 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
533 help
534 This enables the 8 bits timer for the H8300 platform.
535
536config H8300_TMR16
537 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
538 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
539 help
540 This enables the 16 bits timer for the H8300 platform with the
541 H83069 cpu.
542
543config H8300_TPU
544 bool "Clocksource for the H8300 platform" if COMPILE_TEST
545 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
546 help
547 This enables the clocksource for the H8300 platform with the
548 H8S2678 cpu.
549
550config CLKSRC_IMX_GPT
551 bool "Clocksource using i.MX GPT" if COMPILE_TEST
552 depends on ARM && CLKDEV_LOOKUP
553 select CLKSRC_MMIO
554
555config CLKSRC_ST_LPC
556 bool "Low power clocksource found in the LPC" if COMPILE_TEST
557 select CLKSRC_OF if OF
558 depends on HAS_IOMEM
559 select CLKSRC_MMIO
560 help
561 Enable this option to use the Low Power controller timer
562 as clocksource.
563
564endmenu