xref: /linux/drivers/watchdog/Kconfig (revision d195c39052d1da278a00a6744ce59c383b67b191)
1# SPDX-License-Identifier: GPL-2.0-only
2
3#
4# Watchdog device configuration
5#
6
7menuconfig WATCHDOG
8	bool "Watchdog Timer Support"
9	---help---
10	  If you say Y here (and to one of the following options) and create a
11	  character special file /dev/watchdog with major number 10 and minor
12	  number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13	  subsequently opening the file and then failing to write to it for
14	  longer than 1 minute will result in rebooting the machine. This
15	  could be useful for a networked machine that needs to come back
16	  on-line as fast as possible after a lock-up. There's both a watchdog
17	  implementation entirely in software (which can sometimes fail to
18	  reboot the machine) and a driver for hardware watchdog boards, which
19	  are more robust and can also keep track of the temperature inside
20	  your computer. For details, read
21	  <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
22
23	  The watchdog is usually used together with the watchdog daemon
24	  which is available from
25	  <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26	  also monitor NFS connections and can reboot the machine when the process
27	  table is full.
28
29	  If unsure, say N.
30
31if WATCHDOG
32
33config WATCHDOG_CORE
34	tristate "WatchDog Timer Driver Core"
35	---help---
36	  Say Y here if you want to use the new watchdog timer driver core.
37	  This driver provides a framework for all watchdog timer drivers
38	  and gives them the /dev/watchdog interface (and later also the
39	  sysfs interface).
40
41config WATCHDOG_NOWAYOUT
42	bool "Disable watchdog shutdown on close"
43	help
44	  The default watchdog behaviour (which you get if you say N here) is
45	  to stop the timer if the process managing it closes the file
46	  /dev/watchdog. It's always remotely possible that this process might
47	  get killed. If you say Y here, the watchdog cannot be stopped once
48	  it has been started.
49
50config WATCHDOG_HANDLE_BOOT_ENABLED
51	bool "Update boot-enabled watchdog until userspace takes over"
52	default y
53	help
54	  The default watchdog behaviour (which you get if you say Y here) is
55	  to ping watchdog devices that were enabled before the driver has
56	  been loaded until control is taken over from userspace using the
57	  /dev/watchdog file. If you say N here, the kernel will not update
58	  the watchdog on its own. Thus if your userspace does not start fast
59	  enough your device will reboot.
60
61config WATCHDOG_OPEN_TIMEOUT
62	int "Timeout value for opening watchdog device"
63	default 0
64	help
65	  The maximum time, in seconds, for which the watchdog framework takes
66	  care of pinging a hardware watchdog.  A value of 0 means infinite. The
67	  value set here can be overridden by the commandline parameter
68	  "watchdog.open_timeout".
69
70config WATCHDOG_SYSFS
71	bool "Read different watchdog information through sysfs"
72	help
73	  Say Y here if you want to enable watchdog device status read through
74	  sysfs attributes.
75
76comment "Watchdog Pretimeout Governors"
77
78config WATCHDOG_PRETIMEOUT_GOV
79	bool "Enable watchdog pretimeout governors"
80	depends on WATCHDOG_CORE
81	help
82	  The option allows to select watchdog pretimeout governors.
83
84config WATCHDOG_PRETIMEOUT_GOV_SEL
85	tristate
86	depends on WATCHDOG_PRETIMEOUT_GOV
87	default m
88	select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
89
90if WATCHDOG_PRETIMEOUT_GOV
91
92config WATCHDOG_PRETIMEOUT_GOV_NOOP
93	tristate "Noop watchdog pretimeout governor"
94	depends on WATCHDOG_CORE
95	default WATCHDOG_CORE
96	help
97	  Noop watchdog pretimeout governor, only an informational
98	  message is added to kernel log buffer.
99
100config WATCHDOG_PRETIMEOUT_GOV_PANIC
101	tristate "Panic watchdog pretimeout governor"
102	depends on WATCHDOG_CORE
103	default WATCHDOG_CORE
104	help
105	  Panic watchdog pretimeout governor, on watchdog pretimeout
106	  event put the kernel into panic.
107
108choice
109	prompt "Default Watchdog Pretimeout Governor"
110	default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
111	help
112	  This option selects a default watchdog pretimeout governor.
113	  The governor takes its action, if a watchdog is capable
114	  to report a pretimeout event.
115
116config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
117	bool "noop"
118	depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
119	help
120	  Use noop watchdog pretimeout governor by default. If noop
121	  governor is selected by a user, write a short message to
122	  the kernel log buffer and don't do any system changes.
123
124config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
125	bool "panic"
126	depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
127	help
128	  Use panic watchdog pretimeout governor by default, if
129	  a watchdog pretimeout event happens, consider that
130	  a watchdog feeder is dead and reboot is unavoidable.
131
132endchoice
133
134endif # WATCHDOG_PRETIMEOUT_GOV
135
136#
137# General Watchdog drivers
138#
139
140comment "Watchdog Device Drivers"
141
142# Architecture Independent
143
144config SOFT_WATCHDOG
145	tristate "Software watchdog"
146	select WATCHDOG_CORE
147	help
148	  A software monitoring watchdog. This will fail to reboot your system
149	  from some situations that the hardware watchdog will recover
150	  from. Equally it's a lot cheaper to install.
151
152	  To compile this driver as a module, choose M here: the
153	  module will be called softdog.
154
155config SOFT_WATCHDOG_PRETIMEOUT
156	bool "Software watchdog pretimeout governor support"
157	depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
158	help
159	  Enable this if you want to use pretimeout governors with the software
160	  watchdog. Be aware that governors might affect the watchdog because it
161	  is purely software, e.g. the panic governor will stall it!
162
163config BD70528_WATCHDOG
164	tristate "ROHM BD70528 PMIC Watchdog"
165	depends on MFD_ROHM_BD70528
166	select WATCHDOG_CORE
167	help
168	  Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
169	  cause system reset.
170
171	  Say Y here to include support for the ROHM BD70528 watchdog.
172	  Alternatively say M to compile the driver as a module,
173	  which will be called bd70528_wdt.
174
175config DA9052_WATCHDOG
176	tristate "Dialog DA9052 Watchdog"
177	depends on PMIC_DA9052 || COMPILE_TEST
178	select WATCHDOG_CORE
179	help
180	  Support for the watchdog in the DA9052 PMIC. Watchdog trigger
181	  cause system reset.
182
183	  Say Y here to include support for the DA9052 watchdog.
184	  Alternatively say M to compile the driver as a module,
185	  which will be called da9052_wdt.
186
187config DA9055_WATCHDOG
188	tristate "Dialog Semiconductor DA9055 Watchdog"
189	depends on MFD_DA9055 || COMPILE_TEST
190	select WATCHDOG_CORE
191	help
192	  If you say yes here you get support for watchdog on the Dialog
193	  Semiconductor DA9055 PMIC.
194
195	  This driver can also be built as a module.  If so, the module
196	  will be called da9055_wdt.
197
198config DA9063_WATCHDOG
199	tristate "Dialog DA9063 Watchdog"
200	depends on MFD_DA9063 || COMPILE_TEST
201	select WATCHDOG_CORE
202	help
203	  Support for the watchdog in the DA9063 PMIC.
204
205	  This driver can be built as a module. The module name is da9063_wdt.
206
207config DA9062_WATCHDOG
208	tristate "Dialog DA9062/61 Watchdog"
209	depends on MFD_DA9062 || COMPILE_TEST
210	depends on I2C
211	select WATCHDOG_CORE
212	help
213	  Support for the watchdog in the DA9062 and DA9061 PMICs.
214
215	  This driver can be built as a module. The module name is da9062_wdt.
216
217config GPIO_WATCHDOG
218	tristate "Watchdog device controlled through GPIO-line"
219	depends on OF_GPIO
220	select WATCHDOG_CORE
221	help
222	  If you say yes here you get support for watchdog device
223	  controlled through GPIO-line.
224
225config GPIO_WATCHDOG_ARCH_INITCALL
226	bool "Register the watchdog as early as possible"
227	depends on GPIO_WATCHDOG=y
228	help
229	  In some situations, the default initcall level (module_init)
230	  in not early enough in the boot process to avoid the watchdog
231	  to be triggered.
232	  If you say yes here, the initcall level would be raised to
233	  arch_initcall.
234	  If in doubt, say N.
235
236config MENF21BMC_WATCHDOG
237	tristate "MEN 14F021P00 BMC Watchdog"
238	depends on MFD_MENF21BMC || COMPILE_TEST
239	depends on I2C
240	select WATCHDOG_CORE
241	help
242	  Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
243
244	  This driver can also be built as a module. If so the module
245	  will be called menf21bmc_wdt.
246
247config MENZ069_WATCHDOG
248	tristate "MEN 16Z069 Watchdog"
249	depends on MCB
250	select WATCHDOG_CORE
251	help
252	  Say Y here to include support for the MEN 16Z069 Watchdog.
253
254	  This driver can also be built as a module. If so the module
255	  will be called menz069_wdt.
256
257config TANGOX_WATCHDOG
258	tristate "Sigma Designs SMP86xx/SMP87xx watchdog"
259	select WATCHDOG_CORE
260	depends on ARCH_TANGO || COMPILE_TEST
261	depends on HAS_IOMEM
262	help
263	  Support for the watchdog in Sigma Designs SMP86xx (tango3)
264	  and SMP87xx (tango4) family chips.
265
266	  This driver can be built as a module. The module name is tangox_wdt.
267
268config WDAT_WDT
269	tristate "ACPI Watchdog Action Table (WDAT)"
270	depends on ACPI
271	select WATCHDOG_CORE
272	select ACPI_WATCHDOG
273	help
274	  This driver adds support for systems with ACPI Watchdog Action
275	  Table (WDAT) table. Servers typically have this but it can be
276	  found on some desktop machines as well. This driver will take
277	  over the native iTCO watchdog driver found on many Intel CPUs.
278
279	  To compile this driver as module, choose M here: the module will
280	  be called wdat_wdt.
281
282config WM831X_WATCHDOG
283	tristate "WM831x watchdog"
284	depends on MFD_WM831X
285	select WATCHDOG_CORE
286	help
287	  Support for the watchdog in the WM831x AudioPlus PMICs.  When
288	  the watchdog triggers the system will be reset.
289
290config WM8350_WATCHDOG
291	tristate "WM8350 watchdog"
292	depends on MFD_WM8350
293	select WATCHDOG_CORE
294	help
295	  Support for the watchdog in the WM8350 AudioPlus PMIC.  When
296	  the watchdog triggers the system will be reset.
297
298config XILINX_WATCHDOG
299	tristate "Xilinx Watchdog timer"
300	depends on HAS_IOMEM
301	select WATCHDOG_CORE
302	help
303	  Watchdog driver for the xps_timebase_wdt ip core.
304
305	  To compile this driver as a module, choose M here: the
306	  module will be called of_xilinx_wdt.
307
308config ZIIRAVE_WATCHDOG
309	tristate "Zodiac RAVE Watchdog Timer"
310	depends on I2C
311	select WATCHDOG_CORE
312	help
313	  Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
314	  Processor.
315
316	  To compile this driver as a module, choose M here: the
317	  module will be called ziirave_wdt.
318
319config RAVE_SP_WATCHDOG
320	tristate "RAVE SP Watchdog timer"
321	depends on RAVE_SP_CORE
322	depends on NVMEM || !NVMEM
323	select WATCHDOG_CORE
324	help
325	  Support for the watchdog on RAVE SP device.
326
327config MLX_WDT
328	tristate "Mellanox Watchdog"
329	depends on MELLANOX_PLATFORM
330	select WATCHDOG_CORE
331	select REGMAP
332	help
333	  This is the driver for the hardware watchdog on Mellanox systems.
334	  If you are going to use it, say Y here, otherwise N.
335	  This driver can be used together with the watchdog daemon.
336	  It can also watch your kernel to make sure it doesn't freeze,
337	  and if it does, it reboots your system after a certain amount of
338	  time.
339
340	  To compile this driver as a module, choose M here: the
341	  module will be called mlx-wdt.
342
343# ALPHA Architecture
344
345# ARM Architecture
346
347config ARM_SP805_WATCHDOG
348	tristate "ARM SP805 Watchdog"
349	depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
350	select WATCHDOG_CORE
351	help
352	  ARM Primecell SP805 Watchdog timer. This will reboot your system when
353	  the timeout is reached.
354
355config ARM_SBSA_WATCHDOG
356	tristate "ARM SBSA Generic Watchdog"
357	depends on ARM64
358	depends on ARM_ARCH_TIMER
359	select WATCHDOG_CORE
360	help
361	  ARM SBSA Generic Watchdog has two stage timeouts:
362	  the first signal (WS0) is for alerting the system by interrupt,
363	  the second one (WS1) is a real hardware reset.
364	  More details: ARM DEN0029B - Server Base System Architecture (SBSA)
365
366	  This driver can operate ARM SBSA Generic Watchdog as a single stage
367	  or a two stages watchdog, it depends on the module parameter "action".
368
369	  Note: the maximum timeout in the two stages mode is half of that in
370	  the single stage mode.
371
372	  To compile this driver as module, choose M here: The module
373	  will be called sbsa_gwdt.
374
375config ARMADA_37XX_WATCHDOG
376	tristate "Armada 37xx watchdog"
377	depends on ARCH_MVEBU || COMPILE_TEST
378	select MFD_SYSCON
379	select WATCHDOG_CORE
380	help
381	   Say Y here to include support for the watchdog timer found on
382	   Marvell Armada 37xx SoCs.
383	   To compile this driver as a module, choose M here: the
384	   module will be called armada_37xx_wdt.
385
386config ASM9260_WATCHDOG
387	tristate "Alphascale ASM9260 watchdog"
388	depends on MACH_ASM9260 || COMPILE_TEST
389	depends on OF
390	select WATCHDOG_CORE
391	select RESET_CONTROLLER
392	help
393	  Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
394	  system when the timeout is reached.
395
396config AT91RM9200_WATCHDOG
397	tristate "AT91RM9200 watchdog"
398	depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
399	help
400	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
401	  system when the timeout is reached.
402
403config AT91SAM9X_WATCHDOG
404	tristate "AT91SAM9X / AT91CAP9 watchdog"
405	depends on ARCH_AT91 || COMPILE_TEST
406	select WATCHDOG_CORE
407	help
408	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
409	  reboot your system when the timeout is reached.
410
411config SAMA5D4_WATCHDOG
412	tristate "Atmel SAMA5D4 Watchdog Timer"
413	depends on ARCH_AT91 || COMPILE_TEST
414	select WATCHDOG_CORE
415	help
416	  Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
417	  Its Watchdog Timer Mode Register can be written more than once.
418	  This will reboot your system when the timeout is reached.
419
420config CADENCE_WATCHDOG
421	tristate "Cadence Watchdog Timer"
422	depends on HAS_IOMEM
423	select WATCHDOG_CORE
424	help
425	  Say Y here if you want to include support for the watchdog
426	  timer in the Xilinx Zynq.
427
428config 21285_WATCHDOG
429	tristate "DC21285 watchdog"
430	depends on FOOTBRIDGE
431	help
432	  The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
433	  here if you wish to use this. Alternatively say M to compile the
434	  driver as a module, which will be called wdt285.
435
436	  This driver does not work on all machines. In particular, early CATS
437	  boards have hardware problems that will cause the machine to simply
438	  lock up if the watchdog fires.
439
440	  "If in doubt, leave it out" - say N.
441
442config 977_WATCHDOG
443	tristate "NetWinder WB83C977 watchdog"
444	depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
445	help
446	  Say Y here to include support for the WB977 watchdog included in
447	  NetWinder machines. Alternatively say M to compile the driver as
448	  a module, which will be called wdt977.
449
450	  Not sure? It's safe to say N.
451
452config FTWDT010_WATCHDOG
453	tristate "Faraday Technology FTWDT010 watchdog"
454	depends on ARM || COMPILE_TEST
455	select WATCHDOG_CORE
456	default ARCH_GEMINI
457	help
458	  Say Y here if to include support for the Faraday Technology
459	  FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
460	  family of devices.
461
462	  To compile this driver as a module, choose M here: the
463	  module will be called ftwdt010_wdt.
464
465config IXP4XX_WATCHDOG
466	tristate "IXP4xx Watchdog"
467	depends on ARCH_IXP4XX
468	help
469	  Say Y here if to include support for the watchdog timer
470	  in the Intel IXP4xx network processors. This driver can
471	  be built as a module by choosing M. The module will
472	  be called ixp4xx_wdt.
473
474	  Note: The internal IXP4xx watchdog does a soft CPU reset
475	  which doesn't reset any peripherals. There are circumstances
476	  where the watchdog will fail to reset the board correctly
477	  (e.g., if the boot ROM is in an unreadable state).
478
479	  Say N if you are unsure.
480
481config HAVE_S3C2410_WATCHDOG
482	bool
483	help
484	  This will include watchdog timer support for Samsung SoCs. If
485	  you want to include watchdog support for any machine, kindly
486	  select this in the respective mach-XXXX/Kconfig file.
487
488config S3C2410_WATCHDOG
489	tristate "S3C2410 Watchdog"
490	depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST
491	select WATCHDOG_CORE
492	select MFD_SYSCON if ARCH_EXYNOS
493	help
494	  Watchdog timer block in the Samsung SoCs. This will reboot
495	  the system when the timer expires with the watchdog enabled.
496
497	  The driver is limited by the speed of the system's PCLK
498	  signal, so with reasonably fast systems (PCLK around 50-66MHz)
499	  then watchdog intervals of over approximately 20seconds are
500	  unavailable.
501
502	  The driver can be built as a module by choosing M, and will
503	  be called s3c2410_wdt
504
505config SA1100_WATCHDOG
506	tristate "SA1100/PXA2xx watchdog"
507	depends on ARCH_SA1100 || ARCH_PXA
508	help
509	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
510	  reboot your system when timeout is reached.
511
512	  NOTE: once enabled, this timer cannot be disabled.
513
514	  To compile this driver as a module, choose M here: the
515	  module will be called sa1100_wdt.
516
517config DW_WATCHDOG
518	tristate "Synopsys DesignWare watchdog"
519	depends on HAS_IOMEM
520	select WATCHDOG_CORE
521	help
522	  Say Y here if to include support for the Synopsys DesignWare
523	  watchdog timer found in many chips.
524	  To compile this driver as a module, choose M here: the
525	  module will be called dw_wdt.
526
527config EP93XX_WATCHDOG
528	tristate "EP93xx Watchdog"
529	depends on ARCH_EP93XX || COMPILE_TEST
530	select WATCHDOG_CORE
531	help
532	  Say Y here if to include support for the watchdog timer
533	  embedded in the Cirrus Logic EP93xx family of devices.
534
535	  To compile this driver as a module, choose M here: the
536	  module will be called ep93xx_wdt.
537
538config OMAP_WATCHDOG
539	tristate "OMAP Watchdog"
540	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
541	select WATCHDOG_CORE
542	help
543	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.  Say 'Y'
544	  here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
545
546config PNX4008_WATCHDOG
547	tristate "LPC32XX Watchdog"
548	depends on ARCH_LPC32XX || COMPILE_TEST
549	select WATCHDOG_CORE
550	help
551	  Say Y here if to include support for the watchdog timer
552	  in the LPC32XX processor.
553	  This driver can be built as a module by choosing M. The module
554	  will be called pnx4008_wdt.
555
556	  Say N if you are unsure.
557
558config IOP_WATCHDOG
559	tristate "IOP Watchdog"
560	depends on ARCH_IOP13XX
561	select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
562	help
563	  Say Y here if to include support for the watchdog timer
564	  in the Intel IOP3XX & IOP13XX I/O Processors.  This driver can
565	  be built as a module by choosing M. The module will
566	  be called iop_wdt.
567
568	  Note: The IOP13XX watchdog does an Internal Bus Reset which will
569	  affect both cores and the peripherals of the IOP.  The ATU-X
570	  and/or ATUe configuration registers will remain intact, but if
571	  operating as an Root Complex and/or Central Resource, the PCI-X
572	  and/or PCIe busses will also be reset.  THIS IS A VERY BIG HAMMER.
573
574config DAVINCI_WATCHDOG
575	tristate "DaVinci watchdog"
576	depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
577	select WATCHDOG_CORE
578	help
579	  Say Y here if to include support for the watchdog timer
580	  in the DaVinci DM644x/DM646x or Keystone processors.
581	  To compile this driver as a module, choose M here: the
582	  module will be called davinci_wdt.
583
584	  NOTE: once enabled, this timer cannot be disabled.
585	  Say N if you are unsure.
586
587config K3_RTI_WATCHDOG
588	tristate "Texas Instruments K3 RTI watchdog"
589	depends on ARCH_K3 || COMPILE_TEST
590	select WATCHDOG_CORE
591	help
592	  Say Y here if you want to include support for the K3 watchdog
593	  timer (RTI module) available in the K3 generation of processors.
594
595config ORION_WATCHDOG
596	tristate "Orion watchdog"
597	depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
598	depends on ARM
599	select WATCHDOG_CORE
600	help
601	  Say Y here if to include support for the watchdog timer
602	  in the Marvell Orion5x and Kirkwood ARM SoCs.
603	  To compile this driver as a module, choose M here: the
604	  module will be called orion_wdt.
605
606config RN5T618_WATCHDOG
607	tristate "Ricoh RN5T618 watchdog"
608	depends on MFD_RN5T618 || COMPILE_TEST
609	select WATCHDOG_CORE
610	help
611	  If you say yes here you get support for watchdog on the Ricoh
612	  RN5T618 PMIC.
613
614	  This driver can also be built as a module.  If so, the module
615	  will be called rn5t618_wdt.
616
617config SUNXI_WATCHDOG
618	tristate "Allwinner SoCs watchdog support"
619	depends on ARCH_SUNXI || COMPILE_TEST
620	select WATCHDOG_CORE
621	help
622	  Say Y here to include support for the watchdog timer
623	  in Allwinner SoCs.
624	  To compile this driver as a module, choose M here: the
625	  module will be called sunxi_wdt.
626
627config COH901327_WATCHDOG
628	bool "ST-Ericsson COH 901 327 watchdog"
629	depends on ARCH_U300 || (ARM && COMPILE_TEST)
630	default y if MACH_U300
631	select WATCHDOG_CORE
632	help
633	  Say Y here to include Watchdog timer support for the
634	  watchdog embedded into the ST-Ericsson U300 series platforms.
635	  This watchdog is used to reset the system and thus cannot be
636	  compiled as a module.
637
638config NPCM7XX_WATCHDOG
639	tristate "Nuvoton NPCM750 watchdog"
640	depends on ARCH_NPCM || COMPILE_TEST
641	default y if ARCH_NPCM7XX
642	select WATCHDOG_CORE
643	help
644	  Say Y here to include Watchdog timer support for the
645	  watchdog embedded into the NPCM7xx.
646	  This watchdog is used to reset the system and thus cannot be
647	  compiled as a module.
648
649config TWL4030_WATCHDOG
650	tristate "TWL4030 Watchdog"
651	depends on TWL4030_CORE
652	select WATCHDOG_CORE
653	help
654	  Support for TI TWL4030 watchdog.  Say 'Y' here to enable the
655	  watchdog timer support for TWL4030 chips.
656
657config STMP3XXX_RTC_WATCHDOG
658	tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
659	depends on RTC_DRV_STMP || COMPILE_TEST
660	select WATCHDOG_CORE
661	help
662	  Say Y here to include support for the watchdog timer inside
663	  the RTC for the STMP37XX/378X or i.MX23/28 SoC.
664	  To compile this driver as a module, choose M here: the
665	  module will be called stmp3xxx_rtc_wdt.
666
667config TS4800_WATCHDOG
668	tristate "TS-4800 Watchdog"
669	depends on HAS_IOMEM && OF
670	depends on SOC_IMX51 || COMPILE_TEST
671	select WATCHDOG_CORE
672	select MFD_SYSCON
673	help
674	  Technologic Systems TS-4800 has watchdog timer implemented in
675	  an external FPGA. Say Y here if you want to support for the
676	  watchdog timer on TS-4800 board.
677
678config TS72XX_WATCHDOG
679	tristate "TS-72XX SBC Watchdog"
680	depends on MACH_TS72XX || COMPILE_TEST
681	help
682	  Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
683	  watchdog timer implemented in a external CPLD chip. Say Y here
684	  if you want to support for the watchdog timer on TS-72XX boards.
685
686	  To compile this driver as a module, choose M here: the
687	  module will be called ts72xx_wdt.
688
689config MAX63XX_WATCHDOG
690	tristate "Max63xx watchdog"
691	depends on HAS_IOMEM
692	select WATCHDOG_CORE
693	help
694	  Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
695
696config MAX77620_WATCHDOG
697	tristate "Maxim Max77620 Watchdog Timer"
698	depends on MFD_MAX77620 || COMPILE_TEST
699	select WATCHDOG_CORE
700	help
701	 This is the driver for the Max77620 watchdog timer.
702	 Say 'Y' here to enable the watchdog timer support for
703	 MAX77620 chips. To compile this driver as a module,
704	 choose M here: the module will be called max77620_wdt.
705
706config IMX2_WDT
707	tristate "IMX2+ Watchdog"
708	depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
709	select REGMAP_MMIO
710	select WATCHDOG_CORE
711	help
712	  This is the driver for the hardware watchdog
713	  on the Freescale IMX2 and later processors.
714	  If you have one of these processors and wish to have
715	  watchdog support enabled, say Y, otherwise say N.
716
717	  To compile this driver as a module, choose M here: the
718	  module will be called imx2_wdt.
719
720config IMX_SC_WDT
721	tristate "IMX SC Watchdog"
722	depends on HAVE_ARM_SMCCC
723	depends on IMX_SCU
724	select WATCHDOG_CORE
725	help
726	  This is the driver for the system controller watchdog
727	  on the NXP i.MX SoCs with system controller inside, the
728	  watchdog driver will call ARM SMC API and trap into
729	  ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
730	  will request system controller to execute the operations.
731	  If you have one of these processors and wish to have
732	  watchdog support enabled, say Y, otherwise say N.
733
734	  To compile this driver as a module, choose M here: the
735	  module will be called imx_sc_wdt.
736
737config IMX7ULP_WDT
738	tristate "IMX7ULP Watchdog"
739	depends on ARCH_MXC || COMPILE_TEST
740	select WATCHDOG_CORE
741	help
742	  This is the driver for the hardware watchdog on the Freescale
743	  IMX7ULP and later processors. If you have one of these
744	  processors and wish to have watchdog support enabled,
745	  say Y, otherwise say N.
746
747	  To compile this driver as a module, choose M here: the
748	  module will be called imx7ulp_wdt.
749
750config UX500_WATCHDOG
751	tristate "ST-Ericsson Ux500 watchdog"
752	depends on MFD_DB8500_PRCMU
753	select WATCHDOG_CORE
754	default y
755	help
756	  Say Y here to include Watchdog timer support for the watchdog
757	  existing in the prcmu of ST-Ericsson Ux500 series platforms.
758
759	  To compile this driver as a module, choose M here: the
760	  module will be called ux500_wdt.
761
762config RETU_WATCHDOG
763	tristate "Retu watchdog"
764	depends on MFD_RETU
765	select WATCHDOG_CORE
766	help
767	  Retu watchdog driver for Nokia Internet Tablets (770, N800,
768	  N810). At least on N800 the watchdog cannot be disabled, so
769	  this driver is essential and you should enable it.
770
771	  To compile this driver as a module, choose M here: the
772	  module will be called retu_wdt.
773
774config MOXART_WDT
775	tristate "MOXART watchdog"
776	depends on ARCH_MOXART || COMPILE_TEST
777	help
778	  Say Y here to include Watchdog timer support for the watchdog
779	  existing on the MOXA ART SoC series platforms.
780
781	  To compile this driver as a module, choose M here: the
782	  module will be called moxart_wdt.
783
784config SIRFSOC_WATCHDOG
785	tristate "SiRFSOC watchdog"
786	depends on ARCH_SIRF || COMPILE_TEST
787	select WATCHDOG_CORE
788	default y
789	help
790	  Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
791	  the watchdog triggers the system will be reset.
792
793config ST_LPC_WATCHDOG
794	tristate "STMicroelectronics LPC Watchdog"
795	depends on ARCH_STI || COMPILE_TEST
796	depends on OF
797	select WATCHDOG_CORE
798	help
799	  Say Y here to include STMicroelectronics Low Power Controller
800	  (LPC) based Watchdog timer support.
801
802	  To compile this driver as a module, choose M here: the
803	  module will be called st_lpc_wdt.
804
805config TEGRA_WATCHDOG
806	tristate "Tegra watchdog"
807	depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
808	select WATCHDOG_CORE
809	help
810	  Say Y here to include support for the watchdog timer
811	  embedded in NVIDIA Tegra SoCs.
812
813	  To compile this driver as a module, choose M here: the
814	  module will be called tegra_wdt.
815
816config QCOM_WDT
817	tristate "QCOM watchdog"
818	depends on HAS_IOMEM
819	depends on ARCH_QCOM || COMPILE_TEST
820	select WATCHDOG_CORE
821	help
822	  Say Y here to include Watchdog timer support for the watchdog found
823	  on QCOM chipsets.  Currently supported targets are the MSM8960,
824	  APQ8064, and IPQ8064.
825
826	  To compile this driver as a module, choose M here: the
827	  module will be called qcom_wdt.
828
829config MESON_GXBB_WATCHDOG
830	tristate "Amlogic Meson GXBB SoCs watchdog support"
831	depends on ARCH_MESON || COMPILE_TEST
832	select WATCHDOG_CORE
833	help
834	  Say Y here to include support for the watchdog timer
835	  in Amlogic Meson GXBB SoCs.
836	  To compile this driver as a module, choose M here: the
837	  module will be called meson_gxbb_wdt.
838
839config MESON_WATCHDOG
840	tristate "Amlogic Meson SoCs watchdog support"
841	depends on ARCH_MESON || COMPILE_TEST
842	select WATCHDOG_CORE
843	help
844	  Say Y here to include support for the watchdog timer
845	  in Amlogic Meson SoCs.
846	  To compile this driver as a module, choose M here: the
847	  module will be called meson_wdt.
848
849config MEDIATEK_WATCHDOG
850	tristate "Mediatek SoCs watchdog support"
851	depends on ARCH_MEDIATEK || COMPILE_TEST
852	select WATCHDOG_CORE
853	select RESET_CONTROLLER
854	help
855	  Say Y here to include support for the watchdog timer
856	  in Mediatek SoCs.
857	  To compile this driver as a module, choose M here: the
858	  module will be called mtk_wdt.
859
860config DIGICOLOR_WATCHDOG
861	tristate "Conexant Digicolor SoCs watchdog support"
862	depends on ARCH_DIGICOLOR || COMPILE_TEST
863	select WATCHDOG_CORE
864	help
865	  Say Y here to include support for the watchdog timer
866	  in Conexant Digicolor SoCs.
867	  To compile this driver as a module, choose M here: the
868	  module will be called digicolor_wdt.
869
870config LPC18XX_WATCHDOG
871	tristate "LPC18xx/43xx Watchdog"
872	depends on ARCH_LPC18XX || COMPILE_TEST
873	depends on HAS_IOMEM
874	select WATCHDOG_CORE
875	help
876	  Say Y here if to include support for the watchdog timer
877	  in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
878	  processors.
879	  To compile this driver as a module, choose M here: the
880	  module will be called lpc18xx_wdt.
881
882config ATLAS7_WATCHDOG
883	tristate "CSRatlas7 watchdog"
884	depends on ARCH_ATLAS7 || COMPILE_TEST
885	help
886	  Say Y here to include Watchdog timer support for the watchdog
887	  existing on the CSRatlas7 series platforms.
888
889	  To compile this driver as a module, choose M here: the
890	  module will be called atlas7_wdt.
891
892config RENESAS_WDT
893	tristate "Renesas WDT Watchdog"
894	depends on ARCH_RENESAS || COMPILE_TEST
895	select WATCHDOG_CORE
896	help
897	  This driver adds watchdog support for the integrated watchdogs in the
898	  Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
899
900config RENESAS_RZAWDT
901	tristate "Renesas RZ/A WDT Watchdog"
902	depends on ARCH_RENESAS || COMPILE_TEST
903	select WATCHDOG_CORE
904	help
905	  This driver adds watchdog support for the integrated watchdogs in the
906	  Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
907
908config ASPEED_WATCHDOG
909	tristate "Aspeed BMC watchdog support"
910	depends on ARCH_ASPEED || COMPILE_TEST
911	select WATCHDOG_CORE
912	help
913	  Say Y here to include support for the watchdog timer
914	  in Aspeed BMC SoCs.
915
916	  This driver is required to reboot the SoC.
917
918	  To compile this driver as a module, choose M here: the
919	  module will be called aspeed_wdt.
920
921config ZX2967_WATCHDOG
922	tristate "ZTE zx2967 SoCs watchdog support"
923	depends on ARCH_ZX
924	select WATCHDOG_CORE
925	help
926	  Say Y here to include support for the watchdog timer
927	  in ZTE zx2967 SoCs.
928	  To compile this driver as a module, choose M here: the
929	  module will be called zx2967_wdt.
930
931config STM32_WATCHDOG
932	tristate "STM32 Independent WatchDoG (IWDG) support"
933	depends on ARCH_STM32
934	select WATCHDOG_CORE
935	default y
936	help
937	  Say Y here to include support for the watchdog timer
938	  in stm32 SoCs.
939
940	  To compile this driver as a module, choose M here: the
941	  module will be called stm32_iwdg.
942
943config STPMIC1_WATCHDOG
944	tristate "STPMIC1 PMIC watchdog support"
945	depends on MFD_STPMIC1
946	select WATCHDOG_CORE
947	help
948	  Say Y here to include watchdog support embedded into STPMIC1 PMIC.
949	  If the watchdog timer expires, stpmic1 will shut down all its power
950	  supplies.
951
952	  To compile this driver as a module, choose M here: the
953	  module will be called spmic1_wdt.
954
955config UNIPHIER_WATCHDOG
956	tristate "UniPhier watchdog support"
957	depends on ARCH_UNIPHIER || COMPILE_TEST
958	depends on OF && MFD_SYSCON
959	select WATCHDOG_CORE
960	help
961	  Say Y here to include support watchdog timer embedded
962	  into the UniPhier system.
963
964	  To compile this driver as a module, choose M here: the
965	  module will be called uniphier_wdt.
966
967config RTD119X_WATCHDOG
968	bool "Realtek RTD119x/RTD129x watchdog support"
969	depends on ARCH_REALTEK || COMPILE_TEST
970	depends on OF
971	select WATCHDOG_CORE
972	default ARCH_REALTEK
973	help
974	  Say Y here to include support for the watchdog timer in
975	  Realtek RTD1295 SoCs.
976
977config SPRD_WATCHDOG
978	tristate "Spreadtrum watchdog support"
979	depends on ARCH_SPRD || COMPILE_TEST
980	select WATCHDOG_CORE
981	help
982	  Say Y here to include watchdog timer supported
983	  by Spreadtrum system.
984
985config PM8916_WATCHDOG
986	tristate "QCOM PM8916 pmic watchdog"
987	depends on OF && MFD_SPMI_PMIC
988	select WATCHDOG_CORE
989	help
990	  Say Y here to include support watchdog timer embedded into the
991	  pm8916 module.
992
993# X86 (i386 + ia64 + x86_64) Architecture
994
995config ACQUIRE_WDT
996	tristate "Acquire SBC Watchdog Timer"
997	depends on X86
998	---help---
999	  This is the driver for the hardware watchdog on Single Board
1000	  Computers produced by Acquire Inc (and others). This watchdog
1001	  simply watches your kernel to make sure it doesn't freeze, and if
1002	  it does, it reboots your computer after a certain amount of time.
1003
1004	  To compile this driver as a module, choose M here: the
1005	  module will be called acquirewdt.
1006
1007	  Most people will say N.
1008
1009config ADVANTECH_WDT
1010	tristate "Advantech SBC Watchdog Timer"
1011	depends on X86
1012	help
1013	  If you are configuring a Linux kernel for the Advantech single-board
1014	  computer, say `Y' here to support its built-in watchdog timer
1015	  feature. More information can be found at
1016	  <http://www.advantech.com.tw/products/>
1017
1018config ALIM1535_WDT
1019	tristate "ALi M1535 PMU Watchdog Timer"
1020	depends on X86 && PCI
1021	---help---
1022	  This is the driver for the hardware watchdog on the ALi M1535 PMU.
1023
1024	  To compile this driver as a module, choose M here: the
1025	  module will be called alim1535_wdt.
1026
1027	  Most people will say N.
1028
1029config ALIM7101_WDT
1030	tristate "ALi M7101 PMU Computer Watchdog"
1031	depends on PCI
1032	help
1033	  This is the driver for the hardware watchdog on the ALi M7101 PMU
1034	  as used in the x86 Cobalt servers and also found in some
1035	  SPARC Netra servers too.
1036
1037	  To compile this driver as a module, choose M here: the
1038	  module will be called alim7101_wdt.
1039
1040	  Most people will say N.
1041
1042config EBC_C384_WDT
1043	tristate "WinSystems EBC-C384 Watchdog Timer"
1044	depends on X86
1045	select ISA_BUS_API
1046	select WATCHDOG_CORE
1047	help
1048	  Enables watchdog timer support for the watchdog timer on the
1049	  WinSystems EBC-C384 motherboard. The timeout may be configured via
1050	  the timeout module parameter.
1051
1052config F71808E_WDT
1053	tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1054	depends on X86
1055	help
1056	  This is the driver for the hardware watchdog on the Fintek F71808E,
1057	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1058	  F81866 Super I/O controllers.
1059
1060	  You can compile this driver directly into the kernel, or use
1061	  it as a module.  The module will be called f71808e_wdt.
1062
1063config SP5100_TCO
1064	tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1065	depends on X86 && PCI
1066	select WATCHDOG_CORE
1067	---help---
1068	  Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1069	  (Total Cost of Ownership) timer is a watchdog timer that will reboot
1070	  the machine after its expiration. The expiration time can be
1071	  configured with the "heartbeat" parameter.
1072
1073	  To compile this driver as a module, choose M here: the
1074	  module will be called sp5100_tco.
1075
1076config GEODE_WDT
1077	tristate "AMD Geode CS5535/CS5536 Watchdog"
1078	depends on CS5535_MFGPT
1079	help
1080	  This driver enables a watchdog capability built into the
1081	  CS5535/CS5536 companion chips for the AMD Geode GX and LX
1082	  processors.  This watchdog watches your kernel to make sure
1083	  it doesn't freeze, and if it does, it reboots your computer after
1084	  a certain amount of time.
1085
1086	  You can compile this driver directly into the kernel, or use
1087	  it as a module.  The module will be called geodewdt.
1088
1089config SC520_WDT
1090	tristate "AMD Elan SC520 processor Watchdog"
1091	depends on MELAN || COMPILE_TEST
1092	help
1093	  This is the driver for the hardware watchdog built in to the
1094	  AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1095	  This watchdog simply watches your kernel to make sure it doesn't
1096	  freeze, and if it does, it reboots your computer after a certain
1097	  amount of time.
1098
1099	  You can compile this driver directly into the kernel, or use
1100	  it as a module.  The module will be called sc520_wdt.
1101
1102config SBC_FITPC2_WATCHDOG
1103	tristate "Compulab SBC-FITPC2 watchdog"
1104	depends on X86
1105	---help---
1106	  This is the driver for the built-in watchdog timer on the fit-PC2,
1107	  fit-PC2i, CM-iAM single-board computers made by Compulab.
1108
1109	  It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1110	  When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1111
1112	  Entering BIOS setup temporary disables watchdog operation regardless to current state,
1113	  so system will not be restarted while user in BIOS setup.
1114
1115	  Once watchdog was enabled the system will be restarted every
1116	  "Watchdog Timer Value" period, so to prevent it user can restart or
1117	  disable the watchdog.
1118
1119	  To compile this driver as a module, choose M here: the
1120	  module will be called sbc_fitpc2_wdt.
1121
1122	  Most people will say N.
1123
1124config EUROTECH_WDT
1125	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1126	depends on X86
1127	help
1128	  Enable support for the watchdog timer on the Eurotech CPU-1220 and
1129	  CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
1130	  information are at <http://www.eurotech.it/>.
1131
1132config IB700_WDT
1133	tristate "IB700 SBC Watchdog Timer"
1134	depends on X86
1135	---help---
1136	  This is the driver for the hardware watchdog on the IB700 Single
1137	  Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1138	  simply watches your kernel to make sure it doesn't freeze, and if
1139	  it does, it reboots your computer after a certain amount of time.
1140
1141	  This driver is like the WDT501 driver but for slightly different hardware.
1142
1143	  To compile this driver as a module, choose M here: the
1144	  module will be called ib700wdt.
1145
1146	  Most people will say N.
1147
1148config IBMASR
1149	tristate "IBM Automatic Server Restart"
1150	depends on X86
1151	help
1152	  This is the driver for the IBM Automatic Server Restart watchdog
1153	  timer built-in into some eServer xSeries machines.
1154
1155	  To compile this driver as a module, choose M here: the
1156	  module will be called ibmasr.
1157
1158config WAFER_WDT
1159	tristate "ICP Single Board Computer Watchdog Timer"
1160	depends on X86
1161	help
1162	  This is a driver for the hardware watchdog on the ICP Single
1163	  Board Computer. This driver is working on (at least) the following
1164	  IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1165
1166	  To compile this driver as a module, choose M here: the
1167	  module will be called wafer5823wdt.
1168
1169config I6300ESB_WDT
1170	tristate "Intel 6300ESB Timer/Watchdog"
1171	depends on PCI
1172	select WATCHDOG_CORE
1173	---help---
1174	  Hardware driver for the watchdog timer built into the Intel
1175	  6300ESB controller hub.
1176
1177	  To compile this driver as a module, choose M here: the
1178	  module will be called i6300esb.
1179
1180config IE6XX_WDT
1181	tristate "Intel Atom E6xx Watchdog"
1182	depends on X86 && PCI
1183	select WATCHDOG_CORE
1184	select MFD_CORE
1185	select LPC_SCH
1186	---help---
1187	  Hardware driver for the watchdog timer built into the Intel
1188	  Atom E6XX (TunnelCreek) processor.
1189
1190	  To compile this driver as a module, choose M here: the
1191	  module will be called ie6xx_wdt.
1192
1193config INTEL_SCU_WATCHDOG
1194	bool "Intel SCU Watchdog for Mobile Platforms"
1195	depends on X86_INTEL_MID
1196	---help---
1197	  Hardware driver for the watchdog time built into the Intel SCU
1198	  for Intel Mobile Platforms.
1199
1200	  To compile this driver as a module, choose M here.
1201
1202config INTEL_MID_WATCHDOG
1203	tristate "Intel MID Watchdog Timer"
1204	depends on X86_INTEL_MID
1205	select WATCHDOG_CORE
1206	---help---
1207	  Watchdog timer driver built into the Intel SCU for Intel MID
1208	  Platforms.
1209
1210	  This driver currently supports only the watchdog evolution
1211	  implementation in SCU, available for Merrifield generation.
1212
1213	  To compile this driver as a module, choose M here.
1214
1215config ITCO_WDT
1216	tristate "Intel TCO Timer/Watchdog"
1217	depends on (X86 || IA64) && PCI
1218	select WATCHDOG_CORE
1219	depends on I2C || I2C=n
1220	select LPC_ICH if !EXPERT
1221	select I2C_I801 if !EXPERT && I2C
1222	---help---
1223	  Hardware driver for the intel TCO timer based watchdog devices.
1224	  These drivers are included in the Intel 82801 I/O Controller
1225	  Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1226	  controller hub.
1227
1228	  The TCO (Total Cost of Ownership) timer is a watchdog timer
1229	  that will reboot the machine after its second expiration. The
1230	  expiration time can be configured with the "heartbeat" parameter.
1231
1232	  On some motherboards the driver may fail to reset the chipset's
1233	  NO_REBOOT flag which prevents the watchdog from rebooting the
1234	  machine. If this is the case you will get a kernel message like
1235	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1236
1237	  To compile this driver as a module, choose M here: the
1238	  module will be called iTCO_wdt.
1239
1240config ITCO_VENDOR_SUPPORT
1241	bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1242	depends on ITCO_WDT
1243	---help---
1244	  Add vendor specific support to the intel TCO timer based watchdog
1245	  devices. At this moment we only have additional support for some
1246	  SuperMicro Inc. motherboards.
1247
1248config IT8712F_WDT
1249	tristate "IT8712F (Smart Guardian) Watchdog Timer"
1250	depends on X86
1251	---help---
1252	  This is the driver for the built-in watchdog timer on the IT8712F
1253	  Super I/0 chipset used on many motherboards.
1254
1255	  If the driver does not work, then make sure that the game port in
1256	  the BIOS is enabled.
1257
1258	  To compile this driver as a module, choose M here: the
1259	  module will be called it8712f_wdt.
1260
1261config IT87_WDT
1262	tristate "IT87 Watchdog Timer"
1263	depends on X86
1264	select WATCHDOG_CORE
1265	---help---
1266	  This is the driver for the hardware watchdog on the ITE IT8607,
1267	  IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1268	  IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1269	  IT8783 Super I/O chips.
1270
1271	  This watchdog simply watches your kernel to make sure it doesn't
1272	  freeze, and if it does, it reboots your computer after a certain
1273	  amount of time.
1274
1275	  To compile this driver as a module, choose M here: the module will
1276	  be called it87_wdt.
1277
1278config HP_WATCHDOG
1279	tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1280	select WATCHDOG_CORE
1281	depends on X86 && PCI
1282	help
1283	  A software monitoring watchdog and NMI handling driver. This driver
1284	  will detect lockups and provide a stack trace. This is a driver that
1285	  will only load on an HP ProLiant system with a minimum of iLO2 support.
1286	  To compile this driver as a module, choose M here: the module will be
1287	  called hpwdt.
1288
1289config HPWDT_NMI_DECODING
1290	bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1291	depends on HP_WATCHDOG
1292	default y
1293	help
1294	  Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1295	  "Generate NMI to System" virtual button.  When an NMI is claimed
1296	  by the driver, panic is called.
1297
1298config KEMPLD_WDT
1299	tristate "Kontron COM Watchdog Timer"
1300	depends on MFD_KEMPLD
1301	select WATCHDOG_CORE
1302	help
1303	  Support for the PLD watchdog on some Kontron ETX and COMexpress
1304	  (ETXexpress) modules
1305
1306	  This driver can also be built as a module. If so, the module will be
1307	  called kempld_wdt.
1308
1309config SC1200_WDT
1310	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1311	depends on X86
1312	help
1313	  This is a driver for National Semiconductor PC87307/PC97307 hardware
1314	  watchdog cards as found on the SC1200. This watchdog is mainly used
1315	  for power management purposes and can be used to power down the device
1316	  during inactivity periods (includes interrupt activity monitoring).
1317
1318	  To compile this driver as a module, choose M here: the
1319	  module will be called sc1200wdt.
1320
1321	  Most people will say N.
1322
1323config SCx200_WDT
1324	tristate "National Semiconductor SCx200 Watchdog"
1325	depends on SCx200 && PCI
1326	help
1327	  Enable the built-in watchdog timer support on the National
1328	  Semiconductor SCx200 processors.
1329
1330	  If compiled as a module, it will be called scx200_wdt.
1331
1332config PC87413_WDT
1333	tristate "NS PC87413 watchdog"
1334	depends on X86
1335	---help---
1336	  This is the driver for the hardware watchdog on the PC87413 chipset
1337	  This watchdog simply watches your kernel to make sure it doesn't
1338	  freeze, and if it does, it reboots your computer after a certain
1339	  amount of time.
1340
1341	  To compile this driver as a module, choose M here: the
1342	  module will be called pc87413_wdt.
1343
1344	  Most people will say N.
1345
1346config NV_TCO
1347	tristate "nVidia TCO Timer/Watchdog"
1348	depends on X86 && PCI
1349	---help---
1350	  Hardware driver for the TCO timer built into the nVidia Hub family
1351	  (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
1352	  watchdog timer that will reboot the machine after its second
1353	  expiration. The expiration time can be configured with the
1354	  "heartbeat" parameter.
1355
1356	  On some motherboards the driver may fail to reset the chipset's
1357	  NO_REBOOT flag which prevents the watchdog from rebooting the
1358	  machine. If this is the case you will get a kernel message like
1359	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1360
1361	  To compile this driver as a module, choose M here: the
1362	  module will be called nv_tco.
1363
1364config RDC321X_WDT
1365	tristate "RDC R-321x SoC watchdog"
1366	depends on X86_RDC321X || COMPILE_TEST
1367	depends on PCI
1368	help
1369	  This is the driver for the built in hardware watchdog
1370	  in the RDC R-321x SoC.
1371
1372	  To compile this driver as a module, choose M here: the
1373	  module will be called rdc321x_wdt.
1374
1375config 60XX_WDT
1376	tristate "SBC-60XX Watchdog Timer"
1377	depends on X86
1378	help
1379	  This driver can be used with the watchdog timer found on some
1380	  single board computers, namely the 6010 PII based computer.
1381	  It may well work with other cards.  It reads port 0x443 to enable
1382	  and re-set the watchdog timer, and reads port 0x45 to disable
1383	  the watchdog.  If you have a card that behave in similar ways,
1384	  you can probably make this driver work with your card as well.
1385
1386	  You can compile this driver directly into the kernel, or use
1387	  it as a module.  The module will be called sbc60xxwdt.
1388
1389config SBC8360_WDT
1390	tristate "SBC8360 Watchdog Timer"
1391	depends on X86_32
1392	---help---
1393
1394	  This is the driver for the hardware watchdog on the SBC8360 Single
1395	  Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1396
1397	  To compile this driver as a module, choose M here: the
1398	  module will be called sbc8360.
1399
1400	  Most people will say N.
1401
1402config SBC7240_WDT
1403	tristate "SBC Nano 7240 Watchdog Timer"
1404	depends on X86_32 && !UML
1405	---help---
1406	  This is the driver for the hardware watchdog found on the IEI
1407	  single board computers EPIC Nano 7240 (and likely others). This
1408	  watchdog simply watches your kernel to make sure it doesn't freeze,
1409	  and if it does, it reboots your computer after a certain amount of
1410	  time.
1411
1412	  To compile this driver as a module, choose M here: the
1413	  module will be called sbc7240_wdt.
1414
1415config CPU5_WDT
1416	tristate "SMA CPU5 Watchdog"
1417	depends on X86
1418	---help---
1419	  TBD.
1420	  To compile this driver as a module, choose M here: the
1421	  module will be called cpu5wdt.
1422
1423config SMSC_SCH311X_WDT
1424	tristate "SMSC SCH311X Watchdog Timer"
1425	depends on X86
1426	---help---
1427	  This is the driver for the hardware watchdog timer on the
1428	  SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1429	  (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1430	  serial ports).
1431
1432	  To compile this driver as a module, choose M here: the
1433	  module will be called sch311x_wdt.
1434
1435config SMSC37B787_WDT
1436	tristate "Winbond SMsC37B787 Watchdog Timer"
1437	depends on X86
1438	---help---
1439	  This is the driver for the hardware watchdog component on the
1440	  Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1441	  from Vision Systems and maybe others.
1442
1443	  This watchdog simply watches your kernel to make sure it doesn't
1444	  freeze, and if it does, it reboots your computer after a certain
1445	  amount of time.
1446
1447	  Usually a userspace daemon will notify the kernel WDT driver that
1448	  userspace is still alive, at regular intervals.
1449
1450	  To compile this driver as a module, choose M here: the
1451	  module will be called smsc37b787_wdt.
1452
1453	  Most people will say N.
1454
1455config TQMX86_WDT
1456	tristate "TQ-Systems TQMX86 Watchdog Timer"
1457	depends on X86
1458	select WATCHDOG_CORE
1459	help
1460	This is the driver for the hardware watchdog timer in the TQMX86 IO
1461	controller found on some of their ComExpress Modules.
1462
1463	To compile this driver as a module, choose M here; the module
1464	will be called tqmx86_wdt.
1465
1466	Most people will say N.
1467
1468config VIA_WDT
1469	tristate "VIA Watchdog Timer"
1470	depends on X86 && PCI
1471	select WATCHDOG_CORE
1472	---help---
1473	This is the driver for the hardware watchdog timer on VIA
1474	southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1475
1476	To compile this driver as a module, choose M here; the module
1477	will be called via_wdt.
1478
1479	Most people will say N.
1480
1481config W83627HF_WDT
1482	tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1483	depends on X86
1484	select WATCHDOG_CORE
1485	---help---
1486	  This is the driver for the hardware watchdog on the following
1487	  Super I/O chips.
1488		W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1489		W83637HF
1490		W83667HG/HG-B
1491		W83687THF
1492		W83697HF
1493		W83697UG
1494		NCT6775
1495		NCT6776
1496		NCT6779
1497		NCT6791
1498		NCT6792
1499		NCT6102D/04D/06D
1500		NCT6116D
1501
1502	  This watchdog simply watches your kernel to make sure it doesn't
1503	  freeze, and if it does, it reboots your computer after a certain
1504	  amount of time.
1505
1506	  To compile this driver as a module, choose M here: the
1507	  module will be called w83627hf_wdt.
1508
1509	  Most people will say N.
1510
1511config W83877F_WDT
1512	tristate "W83877F (EMACS) Watchdog Timer"
1513	depends on X86
1514	---help---
1515	  This is the driver for the hardware watchdog on the W83877F chipset
1516	  as used in EMACS PC-104 motherboards (and likely others).  This
1517	  watchdog simply watches your kernel to make sure it doesn't freeze,
1518	  and if it does, it reboots your computer after a certain amount of
1519	  time.
1520
1521	  To compile this driver as a module, choose M here: the
1522	  module will be called w83877f_wdt.
1523
1524	  Most people will say N.
1525
1526config W83977F_WDT
1527	tristate "W83977F (PCM-5335) Watchdog Timer"
1528	depends on X86
1529	---help---
1530	  This is the driver for the hardware watchdog on the W83977F I/O chip
1531	  as used in AAEON's PCM-5335 SBC (and likely others).  This
1532	  watchdog simply watches your kernel to make sure it doesn't freeze,
1533	  and if it does, it reboots your computer after a certain amount of
1534	  time.
1535
1536	  To compile this driver as a module, choose M here: the
1537	  module will be called w83977f_wdt.
1538
1539config MACHZ_WDT
1540	tristate "ZF MachZ Watchdog"
1541	depends on X86
1542	---help---
1543	  If you are using a ZF Micro MachZ processor, say Y here, otherwise
1544	  N.  This is the driver for the watchdog timer built-in on that
1545	  processor using ZF-Logic interface.  This watchdog simply watches
1546	  your kernel to make sure it doesn't freeze, and if it does, it
1547	  reboots your computer after a certain amount of time.
1548
1549	  To compile this driver as a module, choose M here: the
1550	  module will be called machzwd.
1551
1552config SBC_EPX_C3_WATCHDOG
1553	tristate "Winsystems SBC EPX-C3 watchdog"
1554	depends on X86
1555	---help---
1556	  This is the driver for the built-in watchdog timer on the EPX-C3
1557	  Single-board computer made by Winsystems, Inc.
1558
1559	  *Note*: This hardware watchdog is not probeable and thus there
1560	  is no way to know if writing to its IO address will corrupt
1561	  your system or have any real effect.  The only way to be sure
1562	  that this driver does what you want is to make sure you
1563	  are running it on an EPX-C3 from Winsystems with the watchdog
1564	  timer at IO address 0x1ee and 0x1ef.  It will write to both those
1565	  IO ports.  Basically, the assumption is made that if you compile
1566	  this driver into your kernel and/or load it as a module, that you
1567	  know what you are doing and that you are in fact running on an
1568	  EPX-C3 board!
1569
1570	  To compile this driver as a module, choose M here: the
1571	  module will be called sbc_epx_c3.
1572
1573config INTEL_MEI_WDT
1574	tristate "Intel MEI iAMT Watchdog"
1575	depends on INTEL_MEI && X86
1576	select WATCHDOG_CORE
1577	---help---
1578	  A device driver for the Intel MEI iAMT watchdog.
1579
1580	  The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1581	  Whenever the OS hangs or crashes, iAMT will send an event
1582	  to any subscriber to this event. The watchdog doesn't reset the
1583	  the platform.
1584
1585	  To compile this driver as a module, choose M here:
1586	  the module will be called mei_wdt.
1587
1588config NI903X_WDT
1589	tristate "NI 903x/913x Watchdog"
1590	depends on X86 && ACPI
1591	select WATCHDOG_CORE
1592	---help---
1593	  This is the driver for the watchdog timer on the National Instruments
1594	  903x/913x real-time controllers.
1595
1596	  To compile this driver as a module, choose M here: the module will be
1597	  called ni903x_wdt.
1598
1599config NIC7018_WDT
1600	tristate "NIC7018 Watchdog"
1601	depends on X86 && ACPI
1602	select WATCHDOG_CORE
1603	---help---
1604	  Support for National Instruments NIC7018 Watchdog.
1605
1606	  To compile this driver as a module, choose M here: the module will be
1607	  called nic7018_wdt.
1608
1609# M68K Architecture
1610
1611config M54xx_WATCHDOG
1612	tristate "MCF54xx watchdog support"
1613	depends on M548x
1614	help
1615	  To compile this driver as a module, choose M here: the
1616	  module will be called m54xx_wdt.
1617
1618# MicroBlaze Architecture
1619
1620# MIPS Architecture
1621
1622config ATH79_WDT
1623	tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1624	depends on ATH79 || (ARM && COMPILE_TEST)
1625	help
1626	  Hardware driver for the built-in watchdog timer on the Atheros
1627	  AR71XX/AR724X/AR913X SoCs.
1628
1629config BCM47XX_WDT
1630	tristate "Broadcom BCM47xx Watchdog Timer"
1631	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1632	select WATCHDOG_CORE
1633	help
1634	  Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1635
1636config RC32434_WDT
1637	tristate "IDT RC32434 SoC Watchdog Timer"
1638	depends on MIKROTIK_RB532
1639	help
1640	  Hardware driver for the IDT RC32434 SoC built-in
1641	  watchdog timer.
1642
1643	  To compile this driver as a module, choose M here: the
1644	  module will be called rc32434_wdt.
1645
1646config INDYDOG
1647	tristate "Indy/I2 Hardware Watchdog"
1648	depends on SGI_HAS_INDYDOG
1649	help
1650	  Hardware driver for the Indy's/I2's watchdog. This is a
1651	  watchdog timer that will reboot the machine after a 60 second
1652	  timer expired and no process has written to /dev/watchdog during
1653	  that time.
1654
1655config JZ4740_WDT
1656	tristate "Ingenic jz4740 SoC hardware watchdog"
1657	depends on MIPS
1658	depends on COMMON_CLK
1659	select WATCHDOG_CORE
1660	select MFD_SYSCON
1661	help
1662	  Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1663
1664config WDT_MTX1
1665	tristate "MTX-1 Hardware Watchdog"
1666	depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1667	help
1668	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
1669	  will reboot the machine after a 100 seconds timer expired.
1670
1671config PNX833X_WDT
1672	tristate "PNX833x Hardware Watchdog"
1673	depends on SOC_PNX8335
1674	depends on BROKEN
1675	help
1676	  Hardware driver for the PNX833x's watchdog. This is a
1677	  watchdog timer that will reboot the machine after a programmable
1678	  timer has expired and no process has written to /dev/watchdog during
1679	  that time.
1680
1681config SIBYTE_WDOG
1682	tristate "Sibyte SoC hardware watchdog"
1683	depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1684	help
1685	  Watchdog driver for the built in watchdog hardware in Sibyte
1686	  SoC processors.  There are apparently two watchdog timers
1687	  on such processors; this driver supports only the first one,
1688	  because currently Linux only supports exporting one watchdog
1689	  to userspace.
1690
1691	  To compile this driver as a loadable module, choose M here.
1692	  The module will be called sb_wdog.
1693
1694config AR7_WDT
1695	tristate "TI AR7 Watchdog Timer"
1696	depends on AR7 || (MIPS && COMPILE_TEST)
1697	help
1698	  Hardware driver for the TI AR7 Watchdog Timer.
1699
1700config TXX9_WDT
1701	tristate "Toshiba TXx9 Watchdog Timer"
1702	depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1703	select WATCHDOG_CORE
1704	help
1705	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1706
1707config OCTEON_WDT
1708	tristate "Cavium OCTEON SOC family Watchdog Timer"
1709	depends on CAVIUM_OCTEON_SOC
1710	default y
1711	select WATCHDOG_CORE
1712	select EXPORT_UASM if OCTEON_WDT = m
1713	help
1714	  Hardware driver for OCTEON's on chip watchdog timer.
1715	  Enables the watchdog for all cores running Linux. It
1716	  installs a NMI handler and pokes the watchdog based on an
1717	  interrupt.  On first expiration of the watchdog, the
1718	  interrupt handler pokes it.  The second expiration causes an
1719	  NMI that prints a message. The third expiration causes a
1720	  global soft reset.
1721
1722	  When userspace has /dev/watchdog open, no poking is done
1723	  from the first interrupt, it is then only poked when the
1724	  device is written.
1725
1726config BCM63XX_WDT
1727	tristate "Broadcom BCM63xx hardware watchdog"
1728	depends on BCM63XX
1729	help
1730	  Watchdog driver for the built in watchdog hardware in Broadcom
1731	  BCM63xx SoC.
1732
1733	  To compile this driver as a loadable module, choose M here.
1734	  The module will be called bcm63xx_wdt.
1735
1736config BCM2835_WDT
1737	tristate "Broadcom BCM2835 hardware watchdog"
1738	depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1739	select WATCHDOG_CORE
1740	help
1741	  Watchdog driver for the built in watchdog hardware in Broadcom
1742	  BCM2835 SoC.
1743
1744	  To compile this driver as a loadable module, choose M here.
1745	  The module will be called bcm2835_wdt.
1746
1747config BCM_KONA_WDT
1748	tristate "BCM Kona Watchdog"
1749	depends on ARCH_BCM_MOBILE || COMPILE_TEST
1750	select WATCHDOG_CORE
1751	help
1752	  Support for the watchdog timer on the following Broadcom BCM281xx
1753	  family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1754	  BCM28155 variants.
1755
1756	  Say 'Y' or 'M' here to enable the driver. The module will be called
1757	  bcm_kona_wdt.
1758
1759config BCM_KONA_WDT_DEBUG
1760	bool "DEBUGFS support for BCM Kona Watchdog"
1761	depends on BCM_KONA_WDT
1762	help
1763	  If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1764	  access to the driver's internal data structures as well as watchdog
1765	  timer hardware registres.
1766
1767	  If in doubt, say 'N'.
1768
1769config BCM7038_WDT
1770	tristate "BCM7038 Watchdog"
1771	select WATCHDOG_CORE
1772	depends on HAS_IOMEM
1773	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1774	help
1775	 Watchdog driver for the built-in hardware in Broadcom 7038 and
1776	 later SoCs used in set-top boxes.  BCM7038 was made public
1777	 during the 2004 CES, and since then, many Broadcom chips use this
1778	 watchdog block, including some cable modem chips.
1779
1780config IMGPDC_WDT
1781	tristate "Imagination Technologies PDC Watchdog Timer"
1782	depends on HAS_IOMEM
1783	depends on MIPS || COMPILE_TEST
1784	select WATCHDOG_CORE
1785	help
1786	  Driver for Imagination Technologies PowerDown Controller
1787	  Watchdog Timer.
1788
1789	  To compile this driver as a loadable module, choose M here.
1790	  The module will be called imgpdc_wdt.
1791
1792config LANTIQ_WDT
1793	tristate "Lantiq SoC watchdog"
1794	depends on LANTIQ
1795	select WATCHDOG_CORE
1796	help
1797	  Hardware driver for the Lantiq SoC Watchdog Timer.
1798
1799config LOONGSON1_WDT
1800	tristate "Loongson1 SoC hardware watchdog"
1801	depends on MACH_LOONGSON32
1802	select WATCHDOG_CORE
1803	help
1804	  Hardware driver for the Loongson1 SoC Watchdog Timer.
1805
1806config RALINK_WDT
1807	tristate "Ralink SoC watchdog"
1808	select WATCHDOG_CORE
1809	depends on RALINK
1810	help
1811	  Hardware driver for the Ralink SoC Watchdog Timer.
1812
1813config MT7621_WDT
1814	tristate "Mediatek SoC watchdog"
1815	select WATCHDOG_CORE
1816	depends on SOC_MT7620 || SOC_MT7621
1817	help
1818	  Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1819
1820config PIC32_WDT
1821	tristate "Microchip PIC32 hardware watchdog"
1822	select WATCHDOG_CORE
1823	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1824	help
1825	  Watchdog driver for the built in watchdog hardware in a PIC32.
1826
1827	  Configuration bits must be set appropriately for the watchdog to be
1828	  controlled by this driver.
1829
1830	  To compile this driver as a loadable module, choose M here.
1831	  The module will be called pic32-wdt.
1832
1833config PIC32_DMT
1834	tristate "Microchip PIC32 Deadman Timer"
1835	select WATCHDOG_CORE
1836	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1837	help
1838	  Watchdog driver for PIC32 instruction fetch counting timer. This specific
1839	  timer is typically be used in misson critical and safety critical
1840	  applications, where any single failure of the software functionality
1841	  and sequencing must be detected.
1842
1843	  To compile this driver as a loadable module, choose M here.
1844	  The module will be called pic32-dmt.
1845
1846# PARISC Architecture
1847
1848# POWERPC Architecture
1849
1850config GEF_WDT
1851	tristate "GE Watchdog Timer"
1852	depends on GE_FPGA
1853	---help---
1854	  Watchdog timer found in a number of GE single board computers.
1855
1856config MPC5200_WDT
1857	bool "MPC52xx Watchdog Timer"
1858	depends on PPC_MPC52xx || COMPILE_TEST
1859	help
1860	  Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1861
1862config 8xxx_WDT
1863	tristate "MPC8xxx Platform Watchdog Timer"
1864	depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1865	select WATCHDOG_CORE
1866	help
1867	  This driver is for a SoC level watchdog that exists on some
1868	  Freescale PowerPC processors. So far this driver supports:
1869	  - MPC8xx watchdogs
1870	  - MPC83xx watchdogs
1871	  - MPC86xx watchdogs
1872
1873	  For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1874
1875config MV64X60_WDT
1876	tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1877	depends on MV64X60 || COMPILE_TEST
1878
1879config PIKA_WDT
1880	tristate "PIKA FPGA Watchdog"
1881	depends on WARP || (PPC64 && COMPILE_TEST)
1882	default y
1883	help
1884	  This enables the watchdog in the PIKA FPGA. Currently used on
1885	  the Warp platform.
1886
1887config BOOKE_WDT
1888	tristate "PowerPC Book-E Watchdog Timer"
1889	depends on BOOKE || 4xx
1890	select WATCHDOG_CORE
1891	---help---
1892	  Watchdog driver for PowerPC Book-E chips, such as the Freescale
1893	  MPC85xx SOCs and the IBM PowerPC 440.
1894
1895	  Please see Documentation/watchdog/watchdog-api.rst for
1896	  more information.
1897
1898config BOOKE_WDT_DEFAULT_TIMEOUT
1899	int "PowerPC Book-E Watchdog Timer Default Timeout"
1900	depends on BOOKE_WDT
1901	default 38 if PPC_FSL_BOOK3E
1902	range 0 63 if PPC_FSL_BOOK3E
1903	default 3 if !PPC_FSL_BOOK3E
1904	range 0 3 if !PPC_FSL_BOOK3E
1905	help
1906	  Select the default watchdog timer period to be used by the PowerPC
1907	  Book-E watchdog driver.  A watchdog "event" occurs when the bit
1908	  position represented by this number transitions from zero to one.
1909
1910	  For Freescale Book-E processors, this is a number between 0 and 63.
1911	  For other Book-E processors, this is a number between 0 and 3.
1912
1913	  The value can be overridden by the wdt_period command-line parameter.
1914
1915config MEN_A21_WDT
1916	tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1917	select WATCHDOG_CORE
1918	depends on GPIOLIB || COMPILE_TEST
1919	help
1920	  Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1921
1922	  The driver can also be built as a module. If so, the module will be
1923	  called mena21_wdt.
1924
1925	  If unsure select N here.
1926
1927# PPC64 Architecture
1928
1929config WATCHDOG_RTAS
1930	tristate "RTAS watchdog"
1931	depends on PPC_RTAS
1932	help
1933	  This driver adds watchdog support for the RTAS watchdog.
1934
1935	  To compile this driver as a module, choose M here. The module
1936	  will be called wdrtas.
1937
1938# S390 Architecture
1939
1940config DIAG288_WATCHDOG
1941	tristate "System z diag288 Watchdog"
1942	depends on S390
1943	select WATCHDOG_CORE
1944	help
1945	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
1946	  provide a virtual watchdog timer to their guest that cause a
1947	  user define Control Program command to be executed after a
1948	  timeout.
1949	  LPAR provides a very similar interface. This driver handles
1950	  both.
1951
1952	  To compile this driver as a module, choose M here. The module
1953	  will be called diag288_wdt.
1954
1955# SUPERH (sh + sh64) Architecture
1956
1957config SH_WDT
1958	tristate "SuperH Watchdog"
1959	depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1960	select WATCHDOG_CORE
1961	help
1962	  This driver adds watchdog support for the integrated watchdog in the
1963	  SuperH processors. If you have one of these processors and wish
1964	  to have watchdog support enabled, say Y, otherwise say N.
1965
1966	  As a side note, saying Y here will automatically boost HZ to 1000
1967	  so that the timer has a chance to clear the overflow counter. On
1968	  slower systems (such as the SH-2 and SH-3) this will likely yield
1969	  some performance issues. As such, the WDT should be avoided here
1970	  unless it is absolutely necessary.
1971
1972	  To compile this driver as a module, choose M here: the
1973	  module will be called shwdt.
1974
1975# SPARC Architecture
1976
1977# SPARC64 Architecture
1978
1979config WATCHDOG_CP1XXX
1980	tristate "CP1XXX Hardware Watchdog support"
1981	depends on SPARC64 && PCI
1982	---help---
1983	  This is the driver for the hardware watchdog timers present on
1984	  Sun Microsystems CompactPCI models CP1400 and CP1500.
1985
1986	  To compile this driver as a module, choose M here: the
1987	  module will be called cpwatchdog.
1988
1989	  If you do not have a CompactPCI model CP1400 or CP1500, or
1990	  another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1991	  you should say N to this option.
1992
1993config WATCHDOG_RIO
1994	tristate "RIO Hardware Watchdog support"
1995	depends on SPARC64 && PCI
1996	help
1997	  Say Y here to support the hardware watchdog capability on Sun RIO
1998	  machines.  The watchdog timeout period is normally one minute but
1999	  can be changed with a boot-time parameter.
2000
2001config WATCHDOG_SUN4V
2002	tristate "Sun4v Watchdog support"
2003	select WATCHDOG_CORE
2004	depends on SPARC64
2005	help
2006	  Say Y here to support the hypervisor watchdog capability embedded
2007	  in the SPARC sun4v architecture.
2008
2009	  To compile this driver as a module, choose M here. The module will
2010	  be called sun4v_wdt.
2011
2012# XTENSA Architecture
2013
2014# Xen Architecture
2015
2016config XEN_WDT
2017	tristate "Xen Watchdog support"
2018	depends on XEN
2019	select WATCHDOG_CORE
2020	help
2021	  Say Y here to support the hypervisor watchdog capability provided
2022	  by Xen 4.0 and newer.  The watchdog timeout period is normally one
2023	  minute but can be changed with a boot-time parameter.
2024
2025config UML_WATCHDOG
2026	tristate "UML watchdog"
2027	depends on UML || COMPILE_TEST
2028
2029#
2030# ISA-based Watchdog Cards
2031#
2032
2033comment "ISA-based Watchdog Cards"
2034	depends on ISA
2035
2036config PCWATCHDOG
2037	tristate "Berkshire Products ISA-PC Watchdog"
2038	depends on ISA
2039	---help---
2040	  This is the driver for the Berkshire Products ISA-PC Watchdog card.
2041	  This card simply watches your kernel to make sure it doesn't freeze,
2042	  and if it does, it reboots your computer after a certain amount of
2043	  time. This driver is like the WDT501 driver but for different
2044	  hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2045	  watchdog cards can be ordered from <http://www.berkprod.com/>.
2046
2047	  To compile this driver as a module, choose M here: the
2048	  module will be called pcwd.
2049
2050	  Most people will say N.
2051
2052config MIXCOMWD
2053	tristate "Mixcom Watchdog"
2054	depends on ISA
2055	---help---
2056	  This is a driver for the Mixcom hardware watchdog cards.  This
2057	  watchdog simply watches your kernel to make sure it doesn't freeze,
2058	  and if it does, it reboots your computer after a certain amount of
2059	  time.
2060
2061	  To compile this driver as a module, choose M here: the
2062	  module will be called mixcomwd.
2063
2064	  Most people will say N.
2065
2066config WDT
2067	tristate "WDT Watchdog timer"
2068	depends on ISA
2069	---help---
2070	  If you have a WDT500P or WDT501P watchdog board, say Y here,
2071	  otherwise N. It is not possible to probe for this board, which means
2072	  that you have to inform the kernel about the IO port and IRQ that
2073	  is needed (you can do this via the io and irq parameters)
2074
2075	  To compile this driver as a module, choose M here: the
2076	  module will be called wdt.
2077
2078#
2079# PCI-based Watchdog Cards
2080#
2081
2082comment "PCI-based Watchdog Cards"
2083	depends on PCI
2084
2085config PCIPCWATCHDOG
2086	tristate "Berkshire Products PCI-PC Watchdog"
2087	depends on PCI
2088	---help---
2089	  This is the driver for the Berkshire Products PCI-PC Watchdog card.
2090	  This card simply watches your kernel to make sure it doesn't freeze,
2091	  and if it does, it reboots your computer after a certain amount of
2092	  time. The card can also monitor the internal temperature of the PC.
2093	  More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2094
2095	  To compile this driver as a module, choose M here: the
2096	  module will be called pcwd_pci.
2097
2098	  Most people will say N.
2099
2100config WDTPCI
2101	tristate "PCI-WDT500/501 Watchdog timer"
2102	depends on PCI
2103	---help---
2104	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2105
2106	  If you have a PCI-WDT501 watchdog board then you can enable the
2107	  temperature sensor by setting the type parameter to 501.
2108
2109	  If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2110	  can do this via the tachometer parameter. Only do this if you have a
2111	  fan tachometer actually set up.
2112
2113	  To compile this driver as a module, choose M here: the
2114	  module will be called wdt_pci.
2115
2116#
2117# USB-based Watchdog Cards
2118#
2119
2120comment "USB-based Watchdog Cards"
2121	depends on USB
2122
2123config USBPCWATCHDOG
2124	tristate "Berkshire Products USB-PC Watchdog"
2125	depends on USB
2126	---help---
2127	  This is the driver for the Berkshire Products USB-PC Watchdog card.
2128	  This card simply watches your kernel to make sure it doesn't freeze,
2129	  and if it does, it reboots your computer after a certain amount of
2130	  time. The card can also monitor the internal temperature of the PC.
2131	  More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2132
2133	  To compile this driver as a module, choose M here: the
2134	  module will be called pcwd_usb.
2135
2136	  Most people will say N.
2137
2138endif # WATCHDOG
2139