xref: /openbmc/linux/drivers/clocksource/Kconfig (revision 19fbcb36)
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_TIMER
26	bool
27
28config CLKBLD_I8253
29	def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
30
31config CLKSRC_MMIO
32	bool
33
34config BCM2835_TIMER
35	bool "BCM2835 timer driver" if COMPILE_TEST
36	select CLKSRC_MMIO
37	help
38	  Enables the support for the BCM2835 timer driver.
39
40config BCM_KONA_TIMER
41	bool "BCM mobile timer driver" if COMPILE_TEST
42	select CLKSRC_MMIO
43	help
44	  Enables the support for the BCM Kona mobile timer driver.
45
46config DAVINCI_TIMER
47	bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
48	help
49	  Enables the support for the TI DaVinci timer driver.
50
51config DIGICOLOR_TIMER
52	bool "Digicolor timer driver" if COMPILE_TEST
53	select CLKSRC_MMIO
54	depends on HAS_IOMEM
55	help
56	  Enables the support for the digicolor timer driver.
57
58config DW_APB_TIMER
59	bool "DW APB timer driver" if COMPILE_TEST
60	help
61	  Enables the support for the dw_apb timer.
62
63config DW_APB_TIMER_OF
64	bool
65	select DW_APB_TIMER
66	select TIMER_OF
67
68config FTTMR010_TIMER
69	bool "Faraday Technology timer driver" if COMPILE_TEST
70	depends on HAS_IOMEM
71	select CLKSRC_MMIO
72	select TIMER_OF
73	select MFD_SYSCON
74	help
75	  Enables support for the Faraday Technology timer block
76	  FTTMR010.
77
78config IXP4XX_TIMER
79	bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
80	depends on HAS_IOMEM
81	select CLKSRC_MMIO
82	help
83	  Enables support for the Intel XScale IXP4xx SoC timer.
84
85config ROCKCHIP_TIMER
86	bool "Rockchip timer driver" if COMPILE_TEST
87	depends on ARM || ARM64
88	select TIMER_OF
89	select CLKSRC_MMIO
90	help
91	  Enables the support for the Rockchip timer driver.
92
93config ARMADA_370_XP_TIMER
94	bool "Armada 370 and XP timer driver" if COMPILE_TEST
95	depends on ARM
96	select TIMER_OF
97	select CLKSRC_MMIO
98	help
99	  Enables the support for the Armada 370 and XP timer driver.
100
101config MESON6_TIMER
102	bool "Meson6 timer driver" if COMPILE_TEST
103	select CLKSRC_MMIO
104	help
105	  Enables the support for the Meson6 timer driver.
106
107config ORION_TIMER
108	bool "Orion timer driver" if COMPILE_TEST
109	depends on ARM
110	select TIMER_OF
111	select CLKSRC_MMIO
112	help
113	  Enables the support for the Orion timer driver
114
115config OWL_TIMER
116	bool "Owl timer driver" if COMPILE_TEST
117	select CLKSRC_MMIO
118	help
119	  Enables the support for the Actions Semi Owl timer driver.
120
121config RDA_TIMER
122	bool "RDA timer driver" if COMPILE_TEST
123	select CLKSRC_MMIO
124	select TIMER_OF
125	help
126	  Enables the support for the RDA Micro timer driver.
127
128config SUN4I_TIMER
129	bool "Sun4i timer driver" if COMPILE_TEST
130	depends on HAS_IOMEM
131	select CLKSRC_MMIO
132	select TIMER_OF
133	help
134	  Enables support for the Sun4i timer.
135
136config SUN5I_HSTIMER
137	bool "Sun5i timer driver" if COMPILE_TEST
138	select CLKSRC_MMIO
139	depends on COMMON_CLK
140	help
141	  Enables support the Sun5i timer.
142
143config TEGRA_TIMER
144	bool "Tegra timer driver" if COMPILE_TEST
145	select CLKSRC_MMIO
146	select TIMER_OF
147	depends on ARCH_TEGRA || COMPILE_TEST
148	help
149	  Enables support for the Tegra driver.
150
151config VT8500_TIMER
152	bool "VT8500 timer driver" if COMPILE_TEST
153	depends on HAS_IOMEM
154	help
155	  Enables support for the VT8500 driver.
156
157config NPCM7XX_TIMER
158	bool "NPCM7xx timer driver" if COMPILE_TEST
159	depends on HAS_IOMEM
160	select TIMER_OF
161	select CLKSRC_MMIO
162	help
163	  Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
164	  where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
165
166config CADENCE_TTC_TIMER
167	bool "Cadence TTC timer driver" if COMPILE_TEST
168	depends on COMMON_CLK
169	help
170	  Enables support for the Cadence TTC driver.
171
172config ASM9260_TIMER
173	bool "ASM9260 timer driver" if COMPILE_TEST
174	select CLKSRC_MMIO
175	select TIMER_OF
176	help
177	  Enables support for the ASM9260 timer.
178
179config CLKSRC_NOMADIK_MTU
180	bool "Nomakdik clocksource driver" if COMPILE_TEST
181	depends on ARM
182	select CLKSRC_MMIO
183	help
184	  Support for Multi Timer Unit. MTU provides access
185	  to multiple interrupt generating programmable
186	  32-bit free running decrementing counters.
187
188config CLKSRC_DBX500_PRCMU
189	bool "Clocksource PRCMU Timer" if COMPILE_TEST
190	depends on HAS_IOMEM
191	help
192	  Use the always on PRCMU Timer as clocksource.
193
194config CLPS711X_TIMER
195	bool "Cirrus Logic timer driver" if COMPILE_TEST
196	select CLKSRC_MMIO
197	help
198	  Enables support for the Cirrus Logic PS711 timer.
199
200config ATLAS7_TIMER
201	bool "Atlas7 timer driver" if COMPILE_TEST
202	select CLKSRC_MMIO
203	help
204	  Enables support for the Atlas7 timer.
205
206config MXS_TIMER
207	bool "MXS timer driver" if COMPILE_TEST
208	select CLKSRC_MMIO
209	select STMP_DEVICE
210	help
211	  Enables support for the MXS timer.
212
213config PRIMA2_TIMER
214	bool "Prima2 timer driver" if COMPILE_TEST
215	select CLKSRC_MMIO
216	help
217	  Enables support for the Prima2 timer.
218
219config U300_TIMER
220	bool "U300 timer driver" if COMPILE_TEST
221	depends on ARM
222	select CLKSRC_MMIO
223	help
224	  Enables support for the U300 timer.
225
226config NSPIRE_TIMER
227	bool "NSpire timer driver" if COMPILE_TEST
228	select CLKSRC_MMIO
229	help
230	  Enables support for the Nspire timer.
231
232config KEYSTONE_TIMER
233	bool "Keystone timer driver" if COMPILE_TEST
234	depends on ARM || ARM64
235	select CLKSRC_MMIO
236	help
237	  Enables support for the Keystone timer.
238
239config INTEGRATOR_AP_TIMER
240	bool "Integrator-AP timer driver" if COMPILE_TEST
241	select CLKSRC_MMIO
242	help
243	  Enables support for the Integrator-AP timer.
244
245config CLKSRC_EFM32
246	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
247	depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
248	select CLKSRC_MMIO
249	default ARCH_EFM32
250	help
251	  Support to use the timers of EFM32 SoCs as clock source and clock
252	  event device.
253
254config CLKSRC_LPC32XX
255	bool "Clocksource for LPC32XX" if COMPILE_TEST
256	depends on HAS_IOMEM
257	depends on ARM
258	select CLKSRC_MMIO
259	select TIMER_OF
260	help
261	  Support for the LPC32XX clocksource.
262
263config CLKSRC_PISTACHIO
264	bool "Clocksource for Pistachio SoC" if COMPILE_TEST
265	depends on HAS_IOMEM
266	select TIMER_OF
267	help
268	  Enables the clocksource for the Pistachio SoC.
269
270config CLKSRC_TI_32K
271	bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
272	depends on GENERIC_SCHED_CLOCK
273	select TIMER_OF if OF
274	help
275	  This option enables support for Texas Instruments 32.768 Hz clocksource
276	  available on many OMAP-like platforms.
277
278config CLKSRC_NPS
279	bool "NPS400 clocksource driver" if COMPILE_TEST
280	depends on !PHYS_ADDR_T_64BIT
281	select CLKSRC_MMIO
282	select TIMER_OF if OF
283	help
284	  NPS400 clocksource support.
285	  It has a 64-bit counter with update rate up to 1000MHz.
286	  This counter is accessed via couple of 32-bit memory-mapped registers.
287
288config CLKSRC_STM32
289	bool "Clocksource for STM32 SoCs" if !ARCH_STM32
290	depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
291	select CLKSRC_MMIO
292	select TIMER_OF
293
294config CLKSRC_STM32_LP
295	bool "Low power clocksource for STM32 SoCs"
296	depends on MFD_STM32_LPTIMER || COMPILE_TEST
297
298config CLKSRC_MPS2
299	bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
300	depends on GENERIC_SCHED_CLOCK
301	select CLKSRC_MMIO
302	select TIMER_OF
303
304config ARC_TIMERS
305	bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
306	depends on GENERIC_SCHED_CLOCK
307	select TIMER_OF
308	help
309	  These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
310	  (ARC700 as well as ARC HS38).
311	  TIMER0 serves as clockevent while TIMER1 provides clocksource.
312
313config ARC_TIMERS_64BIT
314	bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
315	depends on ARC_TIMERS
316	select TIMER_OF
317	help
318	  This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
319	  RTC is implemented inside the core, while GFRC sits outside the core in
320	  ARConnect IP block. Driver automatically picks one of them for clocksource
321	  as appropriate.
322
323config ARM_ARCH_TIMER
324	bool
325	select TIMER_OF if OF
326	select TIMER_ACPI if ACPI
327
328config ARM_ARCH_TIMER_EVTSTREAM
329	bool "Enable ARM architected timer event stream generation by default"
330	default y if ARM_ARCH_TIMER
331	depends on ARM_ARCH_TIMER
332	help
333	  This option enables support by default for event stream generation
334	  based on the ARM architected timer. It is used for waking up CPUs
335	  executing the wfe instruction at a frequency represented as a
336	  power-of-2 divisor of the clock rate. The behaviour can also be
337	  overridden on the command line using the
338	  clocksource.arm_arch_timer.evtstream parameter.
339	  The main use of the event stream is wfe-based timeouts of userspace
340	  locking implementations. It might also be useful for imposing timeout
341	  on wfe to safeguard against any programming errors in case an expected
342	  event is not generated.
343	  This must be disabled for hardware validation purposes to detect any
344	  hardware anomalies of missing events.
345
346config ARM_ARCH_TIMER_OOL_WORKAROUND
347	bool
348
349config FSL_ERRATUM_A008585
350	bool "Workaround for Freescale/NXP Erratum A-008585"
351	default y
352	depends on ARM_ARCH_TIMER && ARM64
353	select ARM_ARCH_TIMER_OOL_WORKAROUND
354	help
355	  This option enables a workaround for Freescale/NXP Erratum
356	  A-008585 ("ARM generic timer may contain an erroneous
357	  value").  The workaround will only be active if the
358	  fsl,erratum-a008585 property is found in the timer node.
359
360config HISILICON_ERRATUM_161010101
361	bool "Workaround for Hisilicon Erratum 161010101"
362	default y
363	select ARM_ARCH_TIMER_OOL_WORKAROUND
364	depends on ARM_ARCH_TIMER && ARM64
365	help
366	  This option enables a workaround for Hisilicon Erratum
367	  161010101. The workaround will be active if the hisilicon,erratum-161010101
368	  property is found in the timer node.
369
370config ARM64_ERRATUM_858921
371	bool "Workaround for Cortex-A73 erratum 858921"
372	default y
373	select ARM_ARCH_TIMER_OOL_WORKAROUND
374	depends on ARM_ARCH_TIMER && ARM64
375	help
376	  This option enables a workaround applicable to Cortex-A73
377	  (all versions), whose counter may return incorrect values.
378	  The workaround will be dynamically enabled when an affected
379	  core is detected.
380
381config SUN50I_ERRATUM_UNKNOWN1
382	bool "Workaround for Allwinner A64 erratum UNKNOWN1"
383	default y
384	depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
385	select ARM_ARCH_TIMER_OOL_WORKAROUND
386	help
387	  This option enables a workaround for instability in the timer on
388	  the Allwinner A64 SoC. The workaround will only be active if the
389	  allwinner,erratum-unknown1 property is found in the timer node.
390
391config ARM_GLOBAL_TIMER
392	bool "Support for the ARM global timer" if COMPILE_TEST
393	select TIMER_OF if OF
394	depends on ARM
395	help
396	  This option enables support for the ARM global timer unit.
397
398config ARM_TIMER_SP804
399	bool "Support for Dual Timer SP804 module" if COMPILE_TEST
400	depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
401	select CLKSRC_MMIO
402	select TIMER_OF if OF
403
404config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
405	bool
406	depends on ARM_GLOBAL_TIMER
407	default y
408	help
409	  Use ARM global timer clock source as sched_clock.
410
411config ARMV7M_SYSTICK
412	bool "Support for the ARMv7M system time" if COMPILE_TEST
413	select TIMER_OF if OF
414	select CLKSRC_MMIO
415	help
416	  This option enables support for the ARMv7M system timer unit.
417
418config ATMEL_PIT
419	bool "Atmel PIT support" if COMPILE_TEST
420	depends on HAS_IOMEM
421	select TIMER_OF if OF
422	help
423	  Support for the Periodic Interval Timer found on Atmel SoCs.
424
425config ATMEL_ST
426	bool "Atmel ST timer support" if COMPILE_TEST
427	depends on HAS_IOMEM
428	select TIMER_OF
429	select MFD_SYSCON
430	help
431	  Support for the Atmel ST timer.
432
433config ATMEL_TCB_CLKSRC
434	bool "Atmel TC Block timer driver" if COMPILE_TEST
435	depends on ARM && HAS_IOMEM
436	select TIMER_OF if OF
437	help
438	  Support for Timer Counter Blocks on Atmel SoCs.
439
440config CLKSRC_EXYNOS_MCT
441	bool "Exynos multi core timer driver" if COMPILE_TEST
442	depends on ARM || ARM64
443	help
444	  Support for Multi Core Timer controller on Exynos SoCs.
445
446config CLKSRC_SAMSUNG_PWM
447	bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
448	depends on HAS_IOMEM
449	help
450	  This is a new clocksource driver for the PWM timer found in
451	  Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
452	  for all devicetree enabled platforms. This driver will be
453	  needed only on systems that do not have the Exynos MCT available.
454
455config FSL_FTM_TIMER
456	bool "Freescale FlexTimer Module driver" if COMPILE_TEST
457	depends on HAS_IOMEM
458	select CLKSRC_MMIO
459	help
460	  Support for Freescale FlexTimer Module (FTM) timer.
461
462config VF_PIT_TIMER
463	bool
464	select CLKSRC_MMIO
465	help
466	  Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
467
468config OXNAS_RPS_TIMER
469	bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
470	select TIMER_OF
471	select CLKSRC_MMIO
472	help
473	  This enables support for the Oxford Semiconductor OXNAS RPS timers.
474
475config SYS_SUPPORTS_SH_CMT
476	bool
477
478config MTK_TIMER
479	bool "Mediatek timer driver" if COMPILE_TEST
480	depends on HAS_IOMEM
481	select TIMER_OF
482	select CLKSRC_MMIO
483	help
484	  Support for Mediatek timer driver.
485
486config SPRD_TIMER
487	bool "Spreadtrum timer driver" if EXPERT
488	depends on HAS_IOMEM
489	depends on (ARCH_SPRD || COMPILE_TEST)
490	default ARCH_SPRD
491	select TIMER_OF
492	help
493	  Enables support for the Spreadtrum timer driver.
494
495config SYS_SUPPORTS_SH_MTU2
496	bool
497
498config SYS_SUPPORTS_SH_TMU
499	bool
500
501config SYS_SUPPORTS_EM_STI
502	bool
503
504config CLKSRC_JCORE_PIT
505	bool "J-Core PIT timer driver" if COMPILE_TEST
506	depends on OF
507	depends on HAS_IOMEM
508	select CLKSRC_MMIO
509	help
510	  This enables build of clocksource and clockevent driver for
511	  the integrated PIT in the J-Core synthesizable, open source SoC.
512
513config SH_TIMER_CMT
514	bool "Renesas CMT timer driver" if COMPILE_TEST
515	depends on HAS_IOMEM
516	default SYS_SUPPORTS_SH_CMT
517	help
518	  This enables build of a clocksource and clockevent driver for
519	  the Compare Match Timer (CMT) hardware available in 16/32/48-bit
520	  variants on a wide range of Mobile and Automotive SoCs from Renesas.
521
522config SH_TIMER_MTU2
523	bool "Renesas MTU2 timer driver" if COMPILE_TEST
524	depends on HAS_IOMEM
525	default SYS_SUPPORTS_SH_MTU2
526	help
527	  This enables build of a clockevent driver for the Multi-Function
528	  Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
529	  This hardware comes with 16-bit timer registers.
530
531config RENESAS_OSTM
532	bool "Renesas OSTM timer driver" if COMPILE_TEST
533	select CLKSRC_MMIO
534	select TIMER_OF
535	help
536	  Enables the support for the Renesas OSTM.
537
538config SH_TIMER_TMU
539	bool "Renesas TMU timer driver" if COMPILE_TEST
540	depends on HAS_IOMEM
541	default SYS_SUPPORTS_SH_TMU
542	help
543	  This enables build of a clocksource and clockevent driver for
544	  the 32-bit Timer Unit (TMU) hardware available on a wide range
545	  SoCs from Renesas.
546
547config EM_TIMER_STI
548	bool "Renesas STI timer driver" if COMPILE_TEST
549	depends on HAS_IOMEM
550	default SYS_SUPPORTS_EM_STI
551	help
552	  This enables build of a clocksource and clockevent driver for
553	  the 48-bit System Timer (STI) hardware available on a SoCs
554	  such as EMEV2 from former NEC Electronics.
555
556config CLKSRC_QCOM
557	bool "Qualcomm MSM timer" if COMPILE_TEST
558	depends on ARM
559	select TIMER_OF
560	help
561	  This enables the clocksource and the per CPU clockevent driver for the
562	  Qualcomm SoCs.
563
564config CLKSRC_VERSATILE
565	bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
566	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
567	select TIMER_OF
568	default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
569	help
570	  This option enables clock source based on free running
571	  counter available in the "System Registers" block of
572	  ARM Versatile and Versatile Express reference platforms.
573
574config CLKSRC_MIPS_GIC
575	bool
576	depends on MIPS_GIC
577	select CLOCKSOURCE_WATCHDOG
578	select TIMER_OF
579
580config CLKSRC_TANGO_XTAL
581	bool "Clocksource for Tango SoC" if COMPILE_TEST
582	depends on ARM
583	select TIMER_OF
584	select CLKSRC_MMIO
585	help
586	  This enables the clocksource for Tango SoC.
587
588config CLKSRC_PXA
589	bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
590	depends on HAS_IOMEM
591	select CLKSRC_MMIO
592	help
593	  This enables OST0 support available on PXA and SA-11x0
594	  platforms.
595
596config H8300_TMR8
597	bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
598	depends on HAS_IOMEM
599	help
600	  This enables the 8 bits timer for the H8300 platform.
601
602config H8300_TMR16
603	bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
604	depends on HAS_IOMEM
605	help
606	  This enables the 16 bits timer for the H8300 platform with the
607	  H83069 CPU.
608
609config H8300_TPU
610	bool "Clocksource for the H8300 platform" if COMPILE_TEST
611	depends on HAS_IOMEM
612	help
613	  This enables the clocksource for the H8300 platform with the
614	  H8S2678 CPU.
615
616config CLKSRC_IMX_GPT
617	bool "Clocksource using i.MX GPT" if COMPILE_TEST
618	depends on (ARM || ARM64) && CLKDEV_LOOKUP
619	select CLKSRC_MMIO
620
621config CLKSRC_IMX_TPM
622	bool "Clocksource using i.MX TPM" if COMPILE_TEST
623	depends on (ARM || ARM64) && CLKDEV_LOOKUP
624	select CLKSRC_MMIO
625	select TIMER_OF
626	help
627	  Enable this option to use IMX Timer/PWM Module (TPM) timer as
628	  clocksource.
629
630config TIMER_IMX_SYS_CTR
631	bool "i.MX system counter timer" if COMPILE_TEST
632	select TIMER_OF
633	help
634	  Enable this option to use i.MX system counter timer as a
635	  clockevent.
636
637config CLKSRC_ST_LPC
638	bool "Low power clocksource found in the LPC" if COMPILE_TEST
639	select TIMER_OF if OF
640	depends on HAS_IOMEM
641	select CLKSRC_MMIO
642	help
643	  Enable this option to use the Low Power controller timer
644	  as clocksource.
645
646config ATCPIT100_TIMER
647	bool "ATCPIT100 timer driver"
648	depends on NDS32 || COMPILE_TEST
649	depends on HAS_IOMEM
650	select TIMER_OF
651	default NDS32
652	help
653	  This option enables support for the Andestech ATCPIT100 timers.
654
655config RISCV_TIMER
656	bool "Timer for the RISC-V platform" if COMPILE_TEST
657	depends on GENERIC_SCHED_CLOCK && RISCV
658	select TIMER_PROBE
659	select TIMER_OF
660	help
661	  This enables the per-hart timer built into all RISC-V systems, which
662	  is accessed via both the SBI and the rdcycle instruction.  This is
663	  required for all RISC-V systems.
664
665config CLINT_TIMER
666	bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
667	depends on GENERIC_SCHED_CLOCK && RISCV
668	select TIMER_PROBE
669	select TIMER_OF
670	help
671	  This option enables the CLINT timer for RISC-V systems.  The CLINT
672	  driver is usually used for NoMMU RISC-V systems.
673
674config CSKY_MP_TIMER
675	bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
676	depends on CSKY
677	select TIMER_OF
678	help
679	  Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
680	  system.
681	  csky,mptimer is not only used in SMP system, it also could be used in
682	  single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
683
684config GX6605S_TIMER
685	bool "Gx6605s SOC system timer driver" if COMPILE_TEST
686	depends on CSKY
687	select CLKSRC_MMIO
688	select TIMER_OF
689	help
690	  This option enables support for gx6605s SOC's timer.
691
692config MILBEAUT_TIMER
693	bool "Milbeaut timer driver" if COMPILE_TEST
694	depends on OF
695	depends on ARM
696	select TIMER_OF
697	select CLKSRC_MMIO
698	help
699	  Enables the support for Milbeaut timer driver.
700
701config INGENIC_TIMER
702	bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
703	default MACH_INGENIC
704	depends on MIPS || COMPILE_TEST
705	depends on COMMON_CLK
706	select MFD_SYSCON
707	select TIMER_OF
708	select IRQ_DOMAIN
709	help
710	  Support for the timer/counter unit of the Ingenic JZ SoCs.
711
712config INGENIC_SYSOST
713	bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
714	depends on MIPS || COMPILE_TEST
715	depends on COMMON_CLK
716	select MFD_SYSCON
717	select TIMER_OF
718	select IRQ_DOMAIN
719	help
720	  Support for the SYSOST of the Ingenic X Series SoCs.
721
722config INGENIC_OST
723	bool "Clocksource using the OST in Ingenic JZ SoCs"
724	depends on MIPS || COMPILE_TEST
725	depends on COMMON_CLK
726	select MFD_SYSCON
727	help
728	  Support for the Operating System Timer of the Ingenic JZ SoCs.
729
730config MICROCHIP_PIT64B
731	bool "Microchip PIT64B support"
732	depends on OF || COMPILE_TEST
733	select CLKSRC_MMIO
734	select TIMER_OF
735	help
736	  This option enables Microchip PIT64B timer for Atmel
737	  based system. It supports the oneshot, the periodic
738	  modes and high resolution. It is used as a clocksource
739	  and a clockevent.
740
741endmenu
742