xref: /openbmc/linux/drivers/watchdog/Kconfig (revision 724ba675)
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	  <https://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon
26	  can also monitor NFS connections and can reboot the machine when the
27	  process 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
76config WATCHDOG_HRTIMER_PRETIMEOUT
77	bool "Enable watchdog hrtimer-based pretimeouts"
78	help
79	  Enable this if you want to use a hrtimer timer based pretimeout for
80	  watchdogs that do not natively support pretimeout support. Be aware
81	  that because this pretimeout functionality uses hrtimers, it may not
82	  be able to fire before the actual watchdog fires in some situations.
83
84comment "Watchdog Pretimeout Governors"
85
86config WATCHDOG_PRETIMEOUT_GOV
87	bool "Enable watchdog pretimeout governors"
88	depends on WATCHDOG_CORE
89	help
90	  The option allows to select watchdog pretimeout governors.
91
92config WATCHDOG_PRETIMEOUT_GOV_SEL
93	tristate
94	depends on WATCHDOG_PRETIMEOUT_GOV
95	default m
96	select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
97
98if WATCHDOG_PRETIMEOUT_GOV
99
100config WATCHDOG_PRETIMEOUT_GOV_NOOP
101	tristate "Noop watchdog pretimeout governor"
102	depends on WATCHDOG_CORE
103	default WATCHDOG_CORE
104	help
105	  Noop watchdog pretimeout governor, only an informational
106	  message is added to kernel log buffer.
107
108config WATCHDOG_PRETIMEOUT_GOV_PANIC
109	tristate "Panic watchdog pretimeout governor"
110	depends on WATCHDOG_CORE
111	default WATCHDOG_CORE
112	help
113	  Panic watchdog pretimeout governor, on watchdog pretimeout
114	  event put the kernel into panic.
115
116choice
117	prompt "Default Watchdog Pretimeout Governor"
118	default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
119	help
120	  This option selects a default watchdog pretimeout governor.
121	  The governor takes its action, if a watchdog is capable
122	  to report a pretimeout event.
123
124config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
125	bool "noop"
126	depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
127	help
128	  Use noop watchdog pretimeout governor by default. If noop
129	  governor is selected by a user, write a short message to
130	  the kernel log buffer and don't do any system changes.
131
132config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
133	bool "panic"
134	depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
135	help
136	  Use panic watchdog pretimeout governor by default, if
137	  a watchdog pretimeout event happens, consider that
138	  a watchdog feeder is dead and reboot is unavoidable.
139
140endchoice
141
142endif # WATCHDOG_PRETIMEOUT_GOV
143
144#
145# General Watchdog drivers
146#
147
148comment "Watchdog Device Drivers"
149
150# Architecture Independent
151
152config SOFT_WATCHDOG
153	tristate "Software watchdog"
154	select WATCHDOG_CORE
155	help
156	  A software monitoring watchdog. This will fail to reboot your system
157	  from some situations that the hardware watchdog will recover
158	  from. Equally it's a lot cheaper to install.
159
160	  To compile this driver as a module, choose M here: the
161	  module will be called softdog.
162
163config SOFT_WATCHDOG_PRETIMEOUT
164	bool "Software watchdog pretimeout governor support"
165	depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
166	help
167	  Enable this if you want to use pretimeout governors with the software
168	  watchdog. Be aware that governors might affect the watchdog because it
169	  is purely software, e.g. the panic governor will stall it!
170
171config BD957XMUF_WATCHDOG
172	tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
173	depends on MFD_ROHM_BD957XMUF
174	select WATCHDOG_CORE
175	help
176	  Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
177	  These PMIC ICs contain watchdog block which can be configured
178	  to toggle reset line if SoC fails to ping watchdog via GPIO.
179
180	  Say Y here to include support for the ROHM BD9576 or BD9573
181	  watchdog. Alternatively say M to compile the driver as a module,
182	  which will be called bd9576_wdt.
183
184config DA9052_WATCHDOG
185	tristate "Dialog DA9052 Watchdog"
186	depends on PMIC_DA9052 || COMPILE_TEST
187	select WATCHDOG_CORE
188	help
189	  Support for the watchdog in the DA9052 PMIC. Watchdog trigger
190	  cause system reset.
191
192	  Say Y here to include support for the DA9052 watchdog.
193	  Alternatively say M to compile the driver as a module,
194	  which will be called da9052_wdt.
195
196config DA9055_WATCHDOG
197	tristate "Dialog Semiconductor DA9055 Watchdog"
198	depends on MFD_DA9055 || COMPILE_TEST
199	select WATCHDOG_CORE
200	help
201	  If you say yes here you get support for watchdog on the Dialog
202	  Semiconductor DA9055 PMIC.
203
204	  This driver can also be built as a module.  If so, the module
205	  will be called da9055_wdt.
206
207config DA9063_WATCHDOG
208	tristate "Dialog DA9063 Watchdog"
209	depends on MFD_DA9063 || COMPILE_TEST
210	depends on I2C
211	select WATCHDOG_CORE
212	help
213	  Support for the watchdog in the DA9063 PMIC.
214
215	  This driver can be built as a module. The module name is da9063_wdt.
216
217config DA9062_WATCHDOG
218	tristate "Dialog DA9062/61 Watchdog"
219	depends on MFD_DA9062 || COMPILE_TEST
220	depends on I2C
221	select WATCHDOG_CORE
222	help
223	  Support for the watchdog in the DA9062 and DA9061 PMICs.
224
225	  This driver can be built as a module. The module name is da9062_wdt.
226
227config GPIO_WATCHDOG
228	tristate "Watchdog device controlled through GPIO-line"
229	depends on OF_GPIO
230	select WATCHDOG_CORE
231	help
232	  If you say yes here you get support for watchdog device
233	  controlled through GPIO-line.
234
235config GPIO_WATCHDOG_ARCH_INITCALL
236	bool "Register the watchdog as early as possible"
237	depends on GPIO_WATCHDOG=y
238	help
239	  In some situations, the default initcall level (module_init)
240	  in not early enough in the boot process to avoid the watchdog
241	  to be triggered.
242	  If you say yes here, the initcall level would be raised to
243	  arch_initcall.
244	  If in doubt, say N.
245
246config MENF21BMC_WATCHDOG
247	tristate "MEN 14F021P00 BMC Watchdog"
248	depends on MFD_MENF21BMC || COMPILE_TEST
249	depends on I2C
250	select WATCHDOG_CORE
251	help
252	  Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
253
254	  This driver can also be built as a module. If so the module
255	  will be called menf21bmc_wdt.
256
257config MENZ069_WATCHDOG
258	tristate "MEN 16Z069 Watchdog"
259	depends on MCB
260	select WATCHDOG_CORE
261	help
262	  Say Y here to include support for the MEN 16Z069 Watchdog.
263
264	  This driver can also be built as a module. If so the module
265	  will be called menz069_wdt.
266
267config WDAT_WDT
268	tristate "ACPI Watchdog Action Table (WDAT)"
269	depends on ACPI
270	select WATCHDOG_CORE
271	select ACPI_WATCHDOG
272	help
273	  This driver adds support for systems with ACPI Watchdog Action
274	  Table (WDAT) table. Servers typically have this but it can be
275	  found on some desktop machines as well. This driver will take
276	  over the native iTCO watchdog driver found on many Intel CPUs.
277
278	  To compile this driver as module, choose M here: the module will
279	  be called wdat_wdt.
280
281config WM831X_WATCHDOG
282	tristate "WM831x watchdog"
283	depends on MFD_WM831X
284	select WATCHDOG_CORE
285	help
286	  Support for the watchdog in the WM831x AudioPlus PMICs.  When
287	  the watchdog triggers the system will be reset.
288
289config WM8350_WATCHDOG
290	tristate "WM8350 watchdog"
291	depends on MFD_WM8350
292	select WATCHDOG_CORE
293	help
294	  Support for the watchdog in the WM8350 AudioPlus PMIC.  When
295	  the watchdog triggers the system will be reset.
296
297config XILINX_WATCHDOG
298	tristate "Xilinx Watchdog timer"
299	depends on HAS_IOMEM
300	select WATCHDOG_CORE
301	help
302	  Watchdog driver for the xps_timebase_wdt IP core.
303
304	  To compile this driver as a module, choose M here: the
305	  module will be called of_xilinx_wdt.
306
307config ZIIRAVE_WATCHDOG
308	tristate "Zodiac RAVE Watchdog Timer"
309	depends on I2C
310	select WATCHDOG_CORE
311	help
312	  Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
313	  Processor.
314
315	  To compile this driver as a module, choose M here: the
316	  module will be called ziirave_wdt.
317
318config RAVE_SP_WATCHDOG
319	tristate "RAVE SP Watchdog timer"
320	depends on RAVE_SP_CORE
321	depends on NVMEM || !NVMEM
322	select WATCHDOG_CORE
323	help
324	  Support for the watchdog on RAVE SP device.
325
326config MLX_WDT
327	tristate "Mellanox Watchdog"
328	depends on MELLANOX_PLATFORM
329	select WATCHDOG_CORE
330	select REGMAP
331	help
332	  This is the driver for the hardware watchdog on Mellanox systems.
333	  If you are going to use it, say Y here, otherwise N.
334	  This driver can be used together with the watchdog daemon.
335	  It can also watch your kernel to make sure it doesn't freeze,
336	  and if it does, it reboots your system after a certain amount of
337	  time.
338
339	  To compile this driver as a module, choose M here: the
340	  module will be called mlx-wdt.
341
342config SL28CPLD_WATCHDOG
343	tristate "Kontron sl28cpld Watchdog"
344	depends on MFD_SL28CPLD || COMPILE_TEST
345	select WATCHDOG_CORE
346	help
347	  Say Y here to include support for the watchdog timer
348	  on the Kontron sl28 CPLD.
349
350	  To compile this driver as a module, choose M here: the
351	  module will be called sl28cpld_wdt.
352
353# ALPHA Architecture
354
355# ARM Architecture
356
357config ARM_SP805_WATCHDOG
358	tristate "ARM SP805 Watchdog"
359	depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
360	select WATCHDOG_CORE
361	help
362	  ARM Primecell SP805 Watchdog timer. This will reboot your system when
363	  the timeout is reached.
364
365config ARM_SBSA_WATCHDOG
366	tristate "ARM SBSA Generic Watchdog"
367	depends on ARM64
368	depends on ARM_ARCH_TIMER
369	select WATCHDOG_CORE
370	help
371	  ARM SBSA Generic Watchdog has two stage timeouts:
372	  the first signal (WS0) is for alerting the system by interrupt,
373	  the second one (WS1) is a real hardware reset.
374	  More details: ARM DEN0029B - Server Base System Architecture (SBSA)
375
376	  This driver can operate ARM SBSA Generic Watchdog as a single stage
377	  or a two stages watchdog, it depends on the module parameter "action".
378
379	  Note: the maximum timeout in the two stages mode is half of that in
380	  the single stage mode.
381
382	  To compile this driver as module, choose M here: The module
383	  will be called sbsa_gwdt.
384
385config ARMADA_37XX_WATCHDOG
386	tristate "Armada 37xx watchdog"
387	depends on ARCH_MVEBU || COMPILE_TEST
388	depends on HAS_IOMEM
389	select MFD_SYSCON
390	select WATCHDOG_CORE
391	help
392	   Say Y here to include support for the watchdog timer found on
393	   Marvell Armada 37xx SoCs.
394	   To compile this driver as a module, choose M here: the
395	   module will be called armada_37xx_wdt.
396
397config ASM9260_WATCHDOG
398	tristate "Alphascale ASM9260 watchdog"
399	depends on MACH_ASM9260 || COMPILE_TEST
400	depends on OF
401	select WATCHDOG_CORE
402	select RESET_CONTROLLER
403	help
404	  Watchdog timer embedded into Alphascale asm9260 chips. This will
405	  reboot your system when the timeout is reached.
406
407config AT91RM9200_WATCHDOG
408	tristate "AT91RM9200 watchdog"
409	depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
410	help
411	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
412	  system when the timeout is reached.
413
414config AT91SAM9X_WATCHDOG
415	tristate "AT91SAM9X / AT91CAP9 watchdog"
416	depends on ARCH_AT91 || COMPILE_TEST
417	select WATCHDOG_CORE
418	help
419	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
420	  reboot your system when the timeout is reached.
421
422config SAMA5D4_WATCHDOG
423	tristate "Atmel SAMA5D4 Watchdog Timer"
424	depends on ARCH_AT91 || COMPILE_TEST
425	select WATCHDOG_CORE
426	help
427	  Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
428	  Its Watchdog Timer Mode Register can be written more than once.
429	  This will reboot your system when the timeout is reached.
430
431config CADENCE_WATCHDOG
432	tristate "Cadence Watchdog Timer"
433	depends on HAS_IOMEM
434	select WATCHDOG_CORE
435	help
436	  Say Y here if you want to include support for the watchdog
437	  timer in the Xilinx Zynq.
438
439config 21285_WATCHDOG
440	tristate "DC21285 watchdog"
441	depends on FOOTBRIDGE
442	help
443	  The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
444	  here if you wish to use this. Alternatively say M to compile the
445	  driver as a module, which will be called wdt285.
446
447	  This driver does not work on all machines. In particular, early CATS
448	  boards have hardware problems that will cause the machine to simply
449	  lock up if the watchdog fires.
450
451	  "If in doubt, leave it out" - say N.
452
453config 977_WATCHDOG
454	tristate "NetWinder WB83C977 watchdog"
455	depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
456	help
457	  Say Y here to include support for the WB977 watchdog included in
458	  NetWinder machines. Alternatively say M to compile the driver as
459	  a module, which will be called wdt977.
460
461	  Not sure? It's safe to say N.
462
463config FTWDT010_WATCHDOG
464	tristate "Faraday Technology FTWDT010 watchdog"
465	depends on ARM || COMPILE_TEST
466	select WATCHDOG_CORE
467	default ARCH_GEMINI
468	help
469	  Say Y here if to include support for the Faraday Technology
470	  FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
471	  family of devices.
472
473	  To compile this driver as a module, choose M here: the
474	  module will be called ftwdt010_wdt.
475
476config IXP4XX_WATCHDOG
477	tristate "IXP4xx Watchdog"
478	depends on ARCH_IXP4XX
479	select WATCHDOG_CORE
480	help
481	  Say Y here if to include support for the watchdog timer
482	  in the Intel IXP4xx network processors. This driver can
483	  be built as a module by choosing M. The module will
484	  be called ixp4xx_wdt.
485
486	  Note: The internal IXP4xx watchdog does a soft CPU reset
487	  which doesn't reset any peripherals. There are circumstances
488	  where the watchdog will fail to reset the board correctly
489	  (e.g., if the boot ROM is in an unreadable state).
490
491	  Say N if you are unsure.
492
493config S3C2410_WATCHDOG
494	tristate "S3C6410/S5Pv210/Exynos Watchdog"
495	depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
496	select WATCHDOG_CORE
497	select MFD_SYSCON if ARCH_EXYNOS
498	help
499	  Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
500	  SoCs. This will reboot the system when the timer expires with
501	  the watchdog enabled.
502
503	  The driver is limited by the speed of the system's PCLK
504	  signal, so with reasonably fast systems (PCLK around 50-66MHz)
505	  then watchdog intervals of over approximately 20seconds are
506	  unavailable.
507
508	  Choose Y/M here only if you build for such Samsung SoC.
509	  The driver can be built as a module by choosing M, and will
510	  be called s3c2410_wdt.
511
512config SA1100_WATCHDOG
513	tristate "SA1100/PXA2xx watchdog"
514	depends on ARCH_SA1100 || ARCH_PXA
515	help
516	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
517	  reboot your system when timeout is reached.
518
519	  NOTE: once enabled, this timer cannot be disabled.
520
521	  To compile this driver as a module, choose M here: the
522	  module will be called sa1100_wdt.
523
524config DW_WATCHDOG
525	tristate "Synopsys DesignWare watchdog"
526	depends on HAS_IOMEM
527	select WATCHDOG_CORE
528	help
529	  Say Y here if to include support for the Synopsys DesignWare
530	  watchdog timer found in many chips.
531	  To compile this driver as a module, choose M here: the
532	  module will be called dw_wdt.
533
534config EP93XX_WATCHDOG
535	tristate "EP93xx Watchdog"
536	depends on ARCH_EP93XX || COMPILE_TEST
537	select WATCHDOG_CORE
538	help
539	  Say Y here if to include support for the watchdog timer
540	  embedded in the Cirrus Logic EP93xx family of devices.
541
542	  To compile this driver as a module, choose M here: the
543	  module will be called ep93xx_wdt.
544
545config OMAP_WATCHDOG
546	tristate "OMAP Watchdog"
547	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
548	select WATCHDOG_CORE
549	help
550	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
551	  Say 'Y' here to enable the
552	  OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
553
554config PNX4008_WATCHDOG
555	tristate "LPC32XX Watchdog"
556	depends on ARCH_LPC32XX || COMPILE_TEST
557	select WATCHDOG_CORE
558	help
559	  Say Y here if to include support for the watchdog timer
560	  in the LPC32XX processor.
561	  This driver can be built as a module by choosing M. The module
562	  will be called pnx4008_wdt.
563
564	  Say N if you are unsure.
565
566config DAVINCI_WATCHDOG
567	tristate "DaVinci watchdog"
568	depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
569	select WATCHDOG_CORE
570	help
571	  Say Y here if to include support for the watchdog timer
572	  in the DaVinci DM644x/DM646x or Keystone processors.
573	  To compile this driver as a module, choose M here: the
574	  module will be called davinci_wdt.
575
576	  NOTE: once enabled, this timer cannot be disabled.
577	  Say N if you are unsure.
578
579config K3_RTI_WATCHDOG
580	tristate "Texas Instruments K3 RTI watchdog"
581	depends on ARCH_K3 || COMPILE_TEST
582	select WATCHDOG_CORE
583	help
584	  Say Y here if you want to include support for the K3 watchdog
585	  timer (RTI module) available in the K3 generation of processors.
586
587config ORION_WATCHDOG
588	tristate "Orion watchdog"
589	depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
590	depends on ARM
591	select WATCHDOG_CORE
592	help
593	  Say Y here if to include support for the watchdog timer
594	  in the Marvell Orion5x and Kirkwood ARM SoCs.
595	  To compile this driver as a module, choose M here: the
596	  module will be called orion_wdt.
597
598config RN5T618_WATCHDOG
599	tristate "Ricoh RN5T618 watchdog"
600	depends on MFD_RN5T618 || COMPILE_TEST
601	select WATCHDOG_CORE
602	help
603	  If you say yes here you get support for watchdog on the Ricoh
604	  RN5T618 PMIC.
605
606	  This driver can also be built as a module.  If so, the module
607	  will be called rn5t618_wdt.
608
609config SUNXI_WATCHDOG
610	tristate "Allwinner SoCs watchdog support"
611	depends on ARCH_SUNXI || COMPILE_TEST
612	select WATCHDOG_CORE
613	help
614	  Say Y here to include support for the watchdog timer
615	  in Allwinner SoCs.
616	  To compile this driver as a module, choose M here: the
617	  module will be called sunxi_wdt.
618
619config NPCM7XX_WATCHDOG
620	tristate "Nuvoton NPCM750 watchdog"
621	depends on ARCH_NPCM || COMPILE_TEST
622	default y if ARCH_NPCM7XX
623	select WATCHDOG_CORE
624	help
625	  Say Y here to include Watchdog timer support for the
626	  watchdog embedded into the NPCM7xx.
627	  This watchdog is used to reset the system and thus cannot be
628	  compiled as a module.
629
630config TWL4030_WATCHDOG
631	tristate "TWL4030 Watchdog"
632	depends on TWL4030_CORE
633	select WATCHDOG_CORE
634	help
635	  Support for TI TWL4030 watchdog.  Say 'Y' here to enable the
636	  watchdog timer support for TWL4030 chips.
637
638config STMP3XXX_RTC_WATCHDOG
639	tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
640	depends on RTC_DRV_STMP || COMPILE_TEST
641	select WATCHDOG_CORE
642	help
643	  Say Y here to include support for the watchdog timer inside
644	  the RTC for the STMP37XX/378X or i.MX23/28 SoC.
645	  To compile this driver as a module, choose M here: the
646	  module will be called stmp3xxx_rtc_wdt.
647
648config TS4800_WATCHDOG
649	tristate "TS-4800 Watchdog"
650	depends on HAS_IOMEM && OF
651	depends on SOC_IMX51 || COMPILE_TEST
652	select WATCHDOG_CORE
653	select MFD_SYSCON
654	help
655	  Technologic Systems TS-4800 has watchdog timer implemented in
656	  an external FPGA. Say Y here if you want to support for the
657	  watchdog timer on TS-4800 board.
658
659config TS72XX_WATCHDOG
660	tristate "TS-72XX SBC Watchdog"
661	depends on MACH_TS72XX || COMPILE_TEST
662	select WATCHDOG_CORE
663	help
664	  Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
665	  watchdog timer implemented in a external CPLD chip. Say Y here
666	  if you want to support for the watchdog timer on TS-72XX boards.
667
668	  To compile this driver as a module, choose M here: the
669	  module will be called ts72xx_wdt.
670
671config MAX63XX_WATCHDOG
672	tristate "Max63xx watchdog"
673	depends on HAS_IOMEM
674	select WATCHDOG_CORE
675	help
676	  Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
677
678config MAX77620_WATCHDOG
679	tristate "Maxim Max77620 Watchdog Timer"
680	depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
681	select WATCHDOG_CORE
682	help
683	  This is the driver for the Max77620 watchdog timer.
684	  Say 'Y' here to enable the watchdog timer support for
685	  MAX77620 chips. To compile this driver as a module,
686	  choose M here: the module will be called max77620_wdt.
687
688config IMX2_WDT
689	tristate "IMX2+ Watchdog"
690	depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
691	select REGMAP_MMIO
692	select WATCHDOG_CORE
693	help
694	  This is the driver for the hardware watchdog
695	  on the Freescale IMX2 and later processors.
696	  If you have one of these processors and wish to have
697	  watchdog support enabled, say Y, otherwise say N.
698
699	  To compile this driver as a module, choose M here: the
700	  module will be called imx2_wdt.
701
702config IMX_SC_WDT
703	tristate "IMX SC Watchdog"
704	depends on HAVE_ARM_SMCCC
705	depends on IMX_SCU
706	select WATCHDOG_CORE
707	help
708	  This is the driver for the system controller watchdog
709	  on the NXP i.MX SoCs with system controller inside, the
710	  watchdog driver will call ARM SMC API and trap into
711	  ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
712	  will request system controller to execute the operations.
713	  If you have one of these processors and wish to have
714	  watchdog support enabled, say Y, otherwise say N.
715
716	  To compile this driver as a module, choose M here: the
717	  module will be called imx_sc_wdt.
718
719config IMX7ULP_WDT
720	tristate "IMX7ULP Watchdog"
721	depends on ARCH_MXC || COMPILE_TEST
722	select WATCHDOG_CORE
723	help
724	  This is the driver for the hardware watchdog on the Freescale
725	  IMX7ULP and later processors. If you have one of these
726	  processors and wish to have watchdog support enabled,
727	  say Y, otherwise say N.
728
729	  To compile this driver as a module, choose M here: the
730	  module will be called imx7ulp_wdt.
731
732config DB500_WATCHDOG
733	tristate "ST-Ericsson DB800 watchdog"
734	depends on MFD_DB8500_PRCMU
735	select WATCHDOG_CORE
736	default y
737	help
738	  Say Y here to include Watchdog timer support for the watchdog
739	  existing in the prcmu of ST-Ericsson DB8500 platform.
740
741	  To compile this driver as a module, choose M here: the
742	  module will be called db500_wdt.
743
744config RETU_WATCHDOG
745	tristate "Retu watchdog"
746	depends on MFD_RETU
747	select WATCHDOG_CORE
748	help
749	  Retu watchdog driver for Nokia Internet Tablets (770, N800,
750	  N810). At least on N800 the watchdog cannot be disabled, so
751	  this driver is essential and you should enable it.
752
753	  To compile this driver as a module, choose M here: the
754	  module will be called retu_wdt.
755
756config MOXART_WDT
757	tristate "MOXART watchdog"
758	depends on ARCH_MOXART || COMPILE_TEST
759	help
760	  Say Y here to include Watchdog timer support for the watchdog
761	  existing on the MOXA ART SoC series platforms.
762
763	  To compile this driver as a module, choose M here: the
764	  module will be called moxart_wdt.
765
766config ST_LPC_WATCHDOG
767	tristate "STMicroelectronics LPC Watchdog"
768	depends on ARCH_STI || COMPILE_TEST
769	depends on OF
770	select WATCHDOG_CORE
771	help
772	  Say Y here to include STMicroelectronics Low Power Controller
773	  (LPC) based Watchdog timer support.
774
775	  To compile this driver as a module, choose M here: the
776	  module will be called st_lpc_wdt.
777
778config TEGRA_WATCHDOG
779	tristate "Tegra watchdog"
780	depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
781	select WATCHDOG_CORE
782	help
783	  Say Y here to include support for the watchdog timer
784	  embedded in NVIDIA Tegra SoCs.
785
786	  To compile this driver as a module, choose M here: the
787	  module will be called tegra_wdt.
788
789config QCOM_WDT
790	tristate "QCOM watchdog"
791	depends on HAS_IOMEM
792	depends on ARCH_QCOM || COMPILE_TEST
793	select WATCHDOG_CORE
794	help
795	  Say Y here to include Watchdog timer support for the watchdog found
796	  on QCOM chipsets.  Currently supported targets are the MSM8960,
797	  APQ8064, and IPQ8064.
798
799	  To compile this driver as a module, choose M here: the
800	  module will be called qcom_wdt.
801
802config MESON_GXBB_WATCHDOG
803	tristate "Amlogic Meson GXBB SoCs watchdog support"
804	depends on ARCH_MESON || COMPILE_TEST
805	select WATCHDOG_CORE
806	help
807	  Say Y here to include support for the watchdog timer
808	  in Amlogic Meson GXBB SoCs.
809	  To compile this driver as a module, choose M here: the
810	  module will be called meson_gxbb_wdt.
811
812config MESON_WATCHDOG
813	tristate "Amlogic Meson SoCs watchdog support"
814	depends on ARCH_MESON || COMPILE_TEST
815	select WATCHDOG_CORE
816	help
817	  Say Y here to include support for the watchdog timer
818	  in Amlogic Meson SoCs.
819	  To compile this driver as a module, choose M here: the
820	  module will be called meson_wdt.
821
822config MEDIATEK_WATCHDOG
823	tristate "Mediatek SoCs watchdog support"
824	depends on ARCH_MEDIATEK || COMPILE_TEST
825	default ARCH_MEDIATEK
826	select WATCHDOG_CORE
827	select RESET_CONTROLLER
828	help
829	  Say Y here to include support for the watchdog timer
830	  in Mediatek SoCs.
831	  To compile this driver as a module, choose M here: the
832	  module will be called mtk_wdt.
833
834config DIGICOLOR_WATCHDOG
835	tristate "Conexant Digicolor SoCs watchdog support"
836	depends on ARCH_DIGICOLOR || COMPILE_TEST
837	select WATCHDOG_CORE
838	help
839	  Say Y here to include support for the watchdog timer
840	  in Conexant Digicolor SoCs.
841	  To compile this driver as a module, choose M here: the
842	  module will be called digicolor_wdt.
843
844config ARM_SMC_WATCHDOG
845	tristate "ARM Secure Monitor Call based watchdog support"
846	depends on ARM || ARM64
847	depends on OF
848	depends on HAVE_ARM_SMCCC
849	select WATCHDOG_CORE
850	help
851	  Say Y here to include support for a watchdog timer
852	  implemented by the EL3 Secure Monitor on ARM platforms.
853	  Requires firmware support.
854	  To compile this driver as a module, choose M here: the
855	  module will be called arm_smc_wdt.
856
857config LPC18XX_WATCHDOG
858	tristate "LPC18xx/43xx Watchdog"
859	depends on ARCH_LPC18XX || COMPILE_TEST
860	depends on HAS_IOMEM
861	select WATCHDOG_CORE
862	help
863	  Say Y here if to include support for the watchdog timer
864	  in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
865	  processors.
866	  To compile this driver as a module, choose M here: the
867	  module will be called lpc18xx_wdt.
868
869config RENESAS_WDT
870	tristate "Renesas WDT Watchdog"
871	depends on ARCH_RENESAS || COMPILE_TEST
872	select WATCHDOG_CORE
873	help
874	  This driver adds watchdog support for the integrated watchdogs in the
875	  Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
876
877config RENESAS_RZAWDT
878	tristate "Renesas RZ/A WDT Watchdog"
879	depends on ARCH_RENESAS || COMPILE_TEST
880	select WATCHDOG_CORE
881	help
882	  This driver adds watchdog support for the integrated watchdogs in the
883	  Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
884
885config RENESAS_RZN1WDT
886	tristate "Renesas RZ/N1 watchdog"
887	depends on ARCH_RENESAS || COMPILE_TEST
888	select WATCHDOG_CORE
889	help
890	  This driver adds watchdog support for the integrated watchdogs in the
891	  Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
892
893config RENESAS_RZG2LWDT
894	tristate "Renesas RZ/G2L WDT Watchdog"
895	depends on ARCH_RENESAS || COMPILE_TEST
896	select WATCHDOG_CORE
897	help
898	  This driver adds watchdog support for the integrated watchdogs in the
899	  Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
900
901config ASPEED_WATCHDOG
902	tristate "Aspeed BMC watchdog support"
903	depends on ARCH_ASPEED || COMPILE_TEST
904	select WATCHDOG_CORE
905	help
906	  Say Y here to include support for the watchdog timer
907	  in Aspeed BMC SoCs.
908
909	  This driver is required to reboot the SoC.
910
911	  To compile this driver as a module, choose M here: the
912	  module will be called aspeed_wdt.
913
914config STM32_WATCHDOG
915	tristate "STM32 Independent WatchDoG (IWDG) support"
916	depends on ARCH_STM32
917	select WATCHDOG_CORE
918	default y
919	help
920	  Say Y here to include support for the watchdog timer
921	  in stm32 SoCs.
922
923	  To compile this driver as a module, choose M here: the
924	  module will be called stm32_iwdg.
925
926config STPMIC1_WATCHDOG
927	tristate "STPMIC1 PMIC watchdog support"
928	depends on MFD_STPMIC1
929	select WATCHDOG_CORE
930	help
931	  Say Y here to include watchdog support embedded into STPMIC1 PMIC.
932	  If the watchdog timer expires, stpmic1 will shut down all its power
933	  supplies.
934
935	  To compile this driver as a module, choose M here: the
936	  module will be called spmic1_wdt.
937
938config UNIPHIER_WATCHDOG
939	tristate "UniPhier watchdog support"
940	depends on ARCH_UNIPHIER || COMPILE_TEST
941	depends on OF && MFD_SYSCON
942	select WATCHDOG_CORE
943	help
944	  Say Y here to include support watchdog timer embedded
945	  into the UniPhier system.
946
947	  To compile this driver as a module, choose M here: the
948	  module will be called uniphier_wdt.
949
950config RTD119X_WATCHDOG
951	bool "Realtek RTD119x/RTD129x watchdog support"
952	depends on ARCH_REALTEK || COMPILE_TEST
953	depends on OF
954	select WATCHDOG_CORE
955	default ARCH_REALTEK
956	help
957	  Say Y here to include support for the watchdog timer in
958	  Realtek RTD1295 SoCs.
959
960config REALTEK_OTTO_WDT
961	tristate "Realtek Otto MIPS watchdog support"
962	depends on MACH_REALTEK_RTL || COMPILE_TEST
963	depends on COMMON_CLK
964	select WATCHDOG_CORE
965	default MACH_REALTEK_RTL
966	help
967	  Say Y here to include support for the watchdog timer on Realtek
968	  RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
969	  notifications and system reset on timeout.
970
971	  When built as a module this will be called realtek_otto_wdt.
972
973config SPRD_WATCHDOG
974	tristate "Spreadtrum watchdog support"
975	depends on ARCH_SPRD || COMPILE_TEST
976	select WATCHDOG_CORE
977	help
978	  Say Y here to include watchdog timer supported
979	  by Spreadtrum system.
980
981config PM8916_WATCHDOG
982	tristate "QCOM PM8916 pmic watchdog"
983	depends on OF && MFD_SPMI_PMIC
984	select WATCHDOG_CORE
985	help
986	  Say Y here to include support watchdog timer embedded into the
987	  pm8916 module.
988
989config VISCONTI_WATCHDOG
990	tristate "Toshiba Visconti series watchdog support"
991	depends on ARCH_VISCONTI || COMPILE_TEST
992	select WATCHDOG_CORE
993	help
994	  Say Y here to include support for the watchdog timer in Toshiba
995	  Visconti SoCs.
996
997config MSC313E_WATCHDOG
998	tristate "MStar MSC313e watchdog"
999	depends on ARCH_MSTARV7 || COMPILE_TEST
1000	select WATCHDOG_CORE
1001	help
1002	  Say Y here to include support for the Watchdog timer embedded
1003	  into MStar MSC313e chips. This will reboot your system when the
1004	  timeout is reached.
1005
1006	  To compile this driver as a module, choose M here: the
1007	  module will be called msc313e_wdt.
1008
1009config APPLE_WATCHDOG
1010	tristate "Apple SoC watchdog"
1011	depends on ARCH_APPLE || COMPILE_TEST
1012	select WATCHDOG_CORE
1013	help
1014	  Say Y here to include support for the Watchdog found in Apple
1015	  SoCs such as the M1. Next to the common watchdog features this
1016	  driver is also required in order to reboot these SoCs.
1017
1018	  To compile this driver as a module, choose M here: the
1019	  module will be called apple_wdt.
1020
1021config SUNPLUS_WATCHDOG
1022	tristate "Sunplus watchdog support"
1023	depends on ARCH_SUNPLUS || COMPILE_TEST
1024	select WATCHDOG_CORE
1025	help
1026	  Say Y here to include support for the watchdog timer
1027	  in Sunplus SoCs.
1028
1029	  To compile this driver as a module, choose M here: the
1030	  module will be called sunplus_wdt.
1031
1032# X86 (i386 + ia64 + x86_64) Architecture
1033
1034config ACQUIRE_WDT
1035	tristate "Acquire SBC Watchdog Timer"
1036	depends on X86
1037	help
1038	  This is the driver for the hardware watchdog on Single Board
1039	  Computers produced by Acquire Inc (and others). This watchdog
1040	  simply watches your kernel to make sure it doesn't freeze, and if
1041	  it does, it reboots your computer after a certain amount of time.
1042
1043	  To compile this driver as a module, choose M here: the
1044	  module will be called acquirewdt.
1045
1046	  Most people will say N.
1047
1048config ADVANTECH_WDT
1049	tristate "Advantech SBC Watchdog Timer"
1050	depends on X86
1051	help
1052	  If you are configuring a Linux kernel for the Advantech single-board
1053	  computer, say `Y' here to support its built-in watchdog timer
1054	  feature. More information can be found at
1055	  <https://www.advantech.com.tw/products/>
1056
1057config ADVANTECH_EC_WDT
1058	tristate "Advantech Embedded Controller Watchdog Timer"
1059	depends on X86
1060	help
1061		This driver supports Advantech products with ITE based Embedded Controller.
1062		It does not support Advantech products with other ECs or without EC.
1063
1064config ALIM1535_WDT
1065	tristate "ALi M1535 PMU Watchdog Timer"
1066	depends on X86 && PCI
1067	help
1068	  This is the driver for the hardware watchdog on the ALi M1535 PMU.
1069
1070	  To compile this driver as a module, choose M here: the
1071	  module will be called alim1535_wdt.
1072
1073	  Most people will say N.
1074
1075config ALIM7101_WDT
1076	tristate "ALi M7101 PMU Computer Watchdog"
1077	depends on PCI
1078	help
1079	  This is the driver for the hardware watchdog on the ALi M7101 PMU
1080	  as used in the x86 Cobalt servers and also found in some
1081	  SPARC Netra servers too.
1082
1083	  To compile this driver as a module, choose M here: the
1084	  module will be called alim7101_wdt.
1085
1086	  Most people will say N.
1087
1088config EBC_C384_WDT
1089	tristate "WinSystems EBC-C384 Watchdog Timer"
1090	depends on X86
1091	select ISA_BUS_API
1092	select WATCHDOG_CORE
1093	help
1094	  Enables watchdog timer support for the watchdog timer on the
1095	  WinSystems EBC-C384 motherboard. The timeout may be configured via
1096	  the timeout module parameter.
1097
1098config EXAR_WDT
1099	tristate "Exar Watchdog Timer"
1100	depends on X86
1101	select WATCHDOG_CORE
1102	help
1103	  Enables watchdog timer support for the watchdog timer present
1104	  in some Exar/MaxLinear UART chips like the XR28V38x.
1105
1106	  To compile this driver as a module, choose M here: the
1107	  module will be called exar_wdt.
1108
1109config F71808E_WDT
1110	tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1111	depends on X86
1112	select WATCHDOG_CORE
1113	help
1114	  This is the driver for the hardware watchdog on the Fintek F71808E,
1115	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1116	  F81866 Super I/O controllers.
1117
1118	  You can compile this driver directly into the kernel, or use
1119	  it as a module.  The module will be called f71808e_wdt.
1120
1121config SP5100_TCO
1122	tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1123	depends on X86 && PCI
1124	select WATCHDOG_CORE
1125	help
1126	  Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1127	  (Total Cost of Ownership) timer is a watchdog timer that will reboot
1128	  the machine after its expiration. The expiration time can be
1129	  configured with the "heartbeat" parameter.
1130
1131	  To compile this driver as a module, choose M here: the
1132	  module will be called sp5100_tco.
1133
1134config GEODE_WDT
1135	tristate "AMD Geode CS5535/CS5536 Watchdog"
1136	depends on CS5535_MFGPT
1137	help
1138	  This driver enables a watchdog capability built into the
1139	  CS5535/CS5536 companion chips for the AMD Geode GX and LX
1140	  processors.  This watchdog watches your kernel to make sure
1141	  it doesn't freeze, and if it does, it reboots your computer after
1142	  a certain amount of time.
1143
1144	  You can compile this driver directly into the kernel, or use
1145	  it as a module.  The module will be called geodewdt.
1146
1147config SC520_WDT
1148	tristate "AMD Elan SC520 processor Watchdog"
1149	depends on MELAN || COMPILE_TEST
1150	help
1151	  This is the driver for the hardware watchdog built in to the
1152	  AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1153	  This watchdog simply watches your kernel to make sure it doesn't
1154	  freeze, and if it does, it reboots your computer after a certain
1155	  amount of time.
1156
1157	  You can compile this driver directly into the kernel, or use
1158	  it as a module.  The module will be called sc520_wdt.
1159
1160config SBC_FITPC2_WATCHDOG
1161	tristate "Compulab SBC-FITPC2 watchdog"
1162	depends on X86
1163	help
1164	  This is the driver for the built-in watchdog timer on the fit-PC2,
1165	  fit-PC2i, CM-iAM single-board computers made by Compulab.
1166
1167	  It's possible to enable the watchdog timer either from BIOS (F2) or
1168	  from booted Linux.
1169	  When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1170	  operational range.
1171
1172	  Entering BIOS setup temporarily disables watchdog operation regardless
1173	  of current state, so system will not be restarted while user is in
1174	  BIOS setup.
1175
1176	  Once the watchdog is enabled the system will be restarted every
1177	  "Watchdog Timer Value" period, so to prevent it user can restart or
1178	  disable the watchdog.
1179
1180	  To compile this driver as a module, choose M here: the
1181	  module will be called sbc_fitpc2_wdt.
1182
1183	  Most people will say N.
1184
1185config EUROTECH_WDT
1186	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1187	depends on X86
1188	help
1189	  Enable support for the watchdog timer on the Eurotech CPU-1220 and
1190	  CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
1191	  information are at <http://www.eurotech.it/>.
1192
1193config IB700_WDT
1194	tristate "IB700 SBC Watchdog Timer"
1195	depends on X86
1196	help
1197	  This is the driver for the hardware watchdog on the IB700 Single
1198	  Board Computer produced by TMC Technology (www.tmc-uk.com). This
1199	  watchdog simply watches your kernel to make sure it doesn't freeze,
1200	  and if it does, it reboots your computer after a certain amount of time.
1201
1202	  This driver is like the WDT501 driver but for slightly different
1203	  hardware.
1204
1205	  To compile this driver as a module, choose M here: the
1206	  module will be called ib700wdt.
1207
1208	  Most people will say N.
1209
1210config IBMASR
1211	tristate "IBM Automatic Server Restart"
1212	depends on X86
1213	help
1214	  This is the driver for the IBM Automatic Server Restart watchdog
1215	  timer built-in into some eServer xSeries machines.
1216
1217	  To compile this driver as a module, choose M here: the
1218	  module will be called ibmasr.
1219
1220config WAFER_WDT
1221	tristate "ICP Single Board Computer Watchdog Timer"
1222	depends on X86
1223	help
1224	  This is a driver for the hardware watchdog on the ICP Single
1225	  Board Computer. This driver is working on (at least) the following
1226	  IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1227
1228	  To compile this driver as a module, choose M here: the
1229	  module will be called wafer5823wdt.
1230
1231config I6300ESB_WDT
1232	tristate "Intel 6300ESB Timer/Watchdog"
1233	depends on PCI
1234	select WATCHDOG_CORE
1235	help
1236	  Hardware driver for the watchdog timer built into the Intel
1237	  6300ESB controller hub.
1238
1239	  To compile this driver as a module, choose M here: the
1240	  module will be called i6300esb.
1241
1242config IE6XX_WDT
1243	tristate "Intel Atom E6xx Watchdog"
1244	depends on X86 && PCI
1245	select WATCHDOG_CORE
1246	select MFD_CORE
1247	select LPC_SCH
1248	help
1249	  Hardware driver for the watchdog timer built into the Intel
1250	  Atom E6XX (TunnelCreek) processor.
1251
1252	  To compile this driver as a module, choose M here: the
1253	  module will be called ie6xx_wdt.
1254
1255config INTEL_MID_WATCHDOG
1256	tristate "Intel MID Watchdog Timer"
1257	depends on X86_INTEL_MID
1258	select WATCHDOG_CORE
1259	help
1260	  Watchdog timer driver built into the Intel SCU for Intel MID
1261	  Platforms.
1262
1263	  This driver currently supports only the watchdog evolution
1264	  implementation in SCU, available for Merrifield generation.
1265
1266	  To compile this driver as a module, choose M here.
1267
1268config ITCO_WDT
1269	tristate "Intel TCO Timer/Watchdog"
1270	depends on (X86 || IA64) && PCI
1271	select WATCHDOG_CORE
1272	depends on I2C || I2C=n
1273	depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1274	select LPC_ICH if !EXPERT
1275	select I2C_I801 if !EXPERT && I2C
1276	help
1277	  Hardware driver for the intel TCO timer based watchdog devices.
1278	  These drivers are included in the Intel 82801 I/O Controller
1279	  Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1280	  controller hub.
1281
1282	  The TCO (Total Cost of Ownership) timer is a watchdog timer
1283	  that will reboot the machine after its second expiration. The
1284	  expiration time can be configured with the "heartbeat" parameter.
1285
1286	  On some motherboards the driver may fail to reset the chipset's
1287	  NO_REBOOT flag which prevents the watchdog from rebooting the
1288	  machine. If this is the case you will get a kernel message like
1289	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1290
1291	  To compile this driver as a module, choose M here: the
1292	  module will be called iTCO_wdt.
1293
1294config ITCO_VENDOR_SUPPORT
1295	bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1296	depends on ITCO_WDT
1297	help
1298	  Add vendor specific support to the intel TCO timer based watchdog
1299	  devices. At this moment we only have additional support for some
1300	  SuperMicro Inc. motherboards.
1301
1302config IT8712F_WDT
1303	tristate "IT8712F (Smart Guardian) Watchdog Timer"
1304	depends on X86
1305	help
1306	  This is the driver for the built-in watchdog timer on the IT8712F
1307	  Super I/0 chipset used on many motherboards.
1308
1309	  If the driver does not work, then make sure that the game port in
1310	  the BIOS is enabled.
1311
1312	  To compile this driver as a module, choose M here: the
1313	  module will be called it8712f_wdt.
1314
1315config IT87_WDT
1316	tristate "IT87 Watchdog Timer"
1317	depends on X86
1318	select WATCHDOG_CORE
1319	help
1320	  This is the driver for the hardware watchdog on the ITE IT8607,
1321	  IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1322	  IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1323	  IT8783 Super I/O chips.
1324
1325	  This watchdog simply watches your kernel to make sure it doesn't
1326	  freeze, and if it does, it reboots your computer after a certain
1327	  amount of time.
1328
1329	  To compile this driver as a module, choose M here: the module will
1330	  be called it87_wdt.
1331
1332config HP_WATCHDOG
1333	tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1334	select WATCHDOG_CORE
1335	depends on (ARM64 || X86) && PCI
1336	help
1337	  A software monitoring watchdog and NMI handling driver. This driver
1338	  will detect lockups and provide a stack trace. This is a driver that
1339	  will only load on an HP ProLiant system with a minimum of iLO2 support.
1340	  To compile this driver as a module, choose M here: the module will be
1341	  called hpwdt.
1342
1343config HPWDT_NMI_DECODING
1344	bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1345	depends on X86 && HP_WATCHDOG
1346	default y
1347	help
1348	  Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1349	  "Generate NMI to System" virtual button.  When an NMI is claimed
1350	  by the driver, panic is called.
1351
1352config KEMPLD_WDT
1353	tristate "Kontron COM Watchdog Timer"
1354	depends on MFD_KEMPLD
1355	select WATCHDOG_CORE
1356	help
1357	  Support for the PLD watchdog on some Kontron ETX and COMexpress
1358	  (ETXexpress) modules
1359
1360	  This driver can also be built as a module. If so, the module will be
1361	  called kempld_wdt.
1362
1363config SC1200_WDT
1364	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1365	depends on X86
1366	help
1367	  This is a driver for National Semiconductor PC87307/PC97307 hardware
1368	  watchdog cards as found on the SC1200. This watchdog is mainly used
1369	  for power management purposes and can be used to power down the device
1370	  during inactivity periods (includes interrupt activity monitoring).
1371
1372	  To compile this driver as a module, choose M here: the
1373	  module will be called sc1200wdt.
1374
1375	  Most people will say N.
1376
1377config SCx200_WDT
1378	tristate "National Semiconductor SCx200 Watchdog"
1379	depends on SCx200 && PCI
1380	help
1381	  Enable the built-in watchdog timer support on the National
1382	  Semiconductor SCx200 processors.
1383
1384	  If compiled as a module, it will be called scx200_wdt.
1385
1386config PC87413_WDT
1387	tristate "NS PC87413 watchdog"
1388	depends on X86
1389	help
1390	  This is the driver for the hardware watchdog on the PC87413 chipset
1391	  This watchdog simply watches your kernel to make sure it doesn't
1392	  freeze, and if it does, it reboots your computer after a certain
1393	  amount of time.
1394
1395	  To compile this driver as a module, choose M here: the
1396	  module will be called pc87413_wdt.
1397
1398	  Most people will say N.
1399
1400config NV_TCO
1401	tristate "nVidia TCO Timer/Watchdog"
1402	depends on X86 && PCI
1403	help
1404	  Hardware driver for the TCO timer built into the nVidia Hub family
1405	  (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
1406	  watchdog timer that will reboot the machine after its second
1407	  expiration. The expiration time can be configured with the
1408	  "heartbeat" parameter.
1409
1410	  On some motherboards the driver may fail to reset the chipset's
1411	  NO_REBOOT flag which prevents the watchdog from rebooting the
1412	  machine. If this is the case you will get a kernel message like
1413	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1414
1415	  To compile this driver as a module, choose M here: the
1416	  module will be called nv_tco.
1417
1418config RDC321X_WDT
1419	tristate "RDC R-321x SoC watchdog"
1420	depends on X86_RDC321X || COMPILE_TEST
1421	depends on PCI
1422	help
1423	  This is the driver for the built in hardware watchdog
1424	  in the RDC R-321x SoC.
1425
1426	  To compile this driver as a module, choose M here: the
1427	  module will be called rdc321x_wdt.
1428
1429config 60XX_WDT
1430	tristate "SBC-60XX Watchdog Timer"
1431	depends on X86
1432	help
1433	  This driver can be used with the watchdog timer found on some
1434	  single board computers, namely the 6010 PII based computer.
1435	  It may well work with other cards.  It reads port 0x443 to enable
1436	  and re-set the watchdog timer, and reads port 0x45 to disable
1437	  the watchdog.  If you have a card that behave in similar ways,
1438	  you can probably make this driver work with your card as well.
1439
1440	  You can compile this driver directly into the kernel, or use
1441	  it as a module.  The module will be called sbc60xxwdt.
1442
1443config SBC8360_WDT
1444	tristate "SBC8360 Watchdog Timer"
1445	depends on X86_32
1446	help
1447
1448	  This is the driver for the hardware watchdog on the SBC8360 Single
1449	  Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1450
1451	  To compile this driver as a module, choose M here: the
1452	  module will be called sbc8360.
1453
1454	  Most people will say N.
1455
1456config SBC7240_WDT
1457	tristate "SBC Nano 7240 Watchdog Timer"
1458	depends on X86_32 && !UML
1459	help
1460	  This is the driver for the hardware watchdog found on the IEI
1461	  single board computers EPIC Nano 7240 (and likely others). This
1462	  watchdog simply watches your kernel to make sure it doesn't freeze,
1463	  and if it does, it reboots your computer after a certain amount of
1464	  time.
1465
1466	  To compile this driver as a module, choose M here: the
1467	  module will be called sbc7240_wdt.
1468
1469config CPU5_WDT
1470	tristate "SMA CPU5 Watchdog"
1471	depends on X86
1472	help
1473	  TBD.
1474	  To compile this driver as a module, choose M here: the
1475	  module will be called cpu5wdt.
1476
1477config SMSC_SCH311X_WDT
1478	tristate "SMSC SCH311X Watchdog Timer"
1479	depends on X86
1480	help
1481	  This is the driver for the hardware watchdog timer on the
1482	  SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1483	  (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1484	  serial ports).
1485
1486	  To compile this driver as a module, choose M here: the
1487	  module will be called sch311x_wdt.
1488
1489config SMSC37B787_WDT
1490	tristate "Winbond SMsC37B787 Watchdog Timer"
1491	depends on X86
1492	help
1493	  This is the driver for the hardware watchdog component on the
1494	  Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1495	  from Vision Systems and maybe others.
1496
1497	  This watchdog simply watches your kernel to make sure it doesn't
1498	  freeze, and if it does, it reboots your computer after a certain
1499	  amount of time.
1500
1501	  Usually a userspace daemon will notify the kernel WDT driver that
1502	  userspace is still alive, at regular intervals.
1503
1504	  To compile this driver as a module, choose M here: the
1505	  module will be called smsc37b787_wdt.
1506
1507	  Most people will say N.
1508
1509config TQMX86_WDT
1510	tristate "TQ-Systems TQMX86 Watchdog Timer"
1511	depends on X86
1512	select WATCHDOG_CORE
1513	help
1514	  This is the driver for the hardware watchdog timer in the TQMX86 IO
1515	  controller found on some of their ComExpress Modules.
1516
1517	  To compile this driver as a module, choose M here; the module
1518	  will be called tqmx86_wdt.
1519
1520	  Most people will say N.
1521
1522config VIA_WDT
1523	tristate "VIA Watchdog Timer"
1524	depends on X86 && PCI
1525	select WATCHDOG_CORE
1526	help
1527	  This is the driver for the hardware watchdog timer on VIA
1528	  southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1529
1530	  To compile this driver as a module, choose M here; the module
1531	  will be called via_wdt.
1532
1533	  Most people will say N.
1534
1535config W83627HF_WDT
1536	tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1537	depends on X86
1538	select WATCHDOG_CORE
1539	help
1540	  This is the driver for the hardware watchdog on the following
1541	  Super I/O chips.
1542		W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1543		W83637HF
1544		W83667HG/HG-B
1545		W83687THF
1546		W83697HF
1547		W83697UG
1548		NCT6775
1549		NCT6776
1550		NCT6779
1551		NCT6791
1552		NCT6792
1553		NCT6102D/04D/06D
1554		NCT6116D
1555
1556	  This watchdog simply watches your kernel to make sure it doesn't
1557	  freeze, and if it does, it reboots your computer after a certain
1558	  amount of time.
1559
1560	  To compile this driver as a module, choose M here: the
1561	  module will be called w83627hf_wdt.
1562
1563	  Most people will say N.
1564
1565config W83877F_WDT
1566	tristate "W83877F (EMACS) Watchdog Timer"
1567	depends on X86
1568	help
1569	  This is the driver for the hardware watchdog on the W83877F chipset
1570	  as used in EMACS PC-104 motherboards (and likely others).  This
1571	  watchdog simply watches your kernel to make sure it doesn't freeze,
1572	  and if it does, it reboots your computer after a certain amount of
1573	  time.
1574
1575	  To compile this driver as a module, choose M here: the
1576	  module will be called w83877f_wdt.
1577
1578	  Most people will say N.
1579
1580config W83977F_WDT
1581	tristate "W83977F (PCM-5335) Watchdog Timer"
1582	depends on X86
1583	help
1584	  This is the driver for the hardware watchdog on the W83977F I/O chip
1585	  as used in AAEON's PCM-5335 SBC (and likely others).  This
1586	  watchdog simply watches your kernel to make sure it doesn't freeze,
1587	  and if it does, it reboots your computer after a certain amount of
1588	  time.
1589
1590	  To compile this driver as a module, choose M here: the
1591	  module will be called w83977f_wdt.
1592
1593config MACHZ_WDT
1594	tristate "ZF MachZ Watchdog"
1595	depends on X86
1596	help
1597	  If you are using a ZF Micro MachZ processor, say Y here, otherwise
1598	  N.  This is the driver for the watchdog timer built-in on that
1599	  processor using ZF-Logic interface.  This watchdog simply watches
1600	  your kernel to make sure it doesn't freeze, and if it does, it
1601	  reboots your computer after a certain amount of time.
1602
1603	  To compile this driver as a module, choose M here: the
1604	  module will be called machzwd.
1605
1606config SBC_EPX_C3_WATCHDOG
1607	tristate "Winsystems SBC EPX-C3 watchdog"
1608	depends on X86
1609	help
1610	  This is the driver for the built-in watchdog timer on the EPX-C3
1611	  Single-board computer made by Winsystems, Inc.
1612
1613	  *Note*: This hardware watchdog is not probeable and thus there
1614	  is no way to know if writing to its IO address will corrupt
1615	  your system or have any real effect.  The only way to be sure
1616	  that this driver does what you want is to make sure you
1617	  are running it on an EPX-C3 from Winsystems with the watchdog
1618	  timer at IO address 0x1ee and 0x1ef.  It will write to both those
1619	  IO ports.  Basically, the assumption is made that if you compile
1620	  this driver into your kernel and/or load it as a module, that you
1621	  know what you are doing and that you are in fact running on an
1622	  EPX-C3 board!
1623
1624	  To compile this driver as a module, choose M here: the
1625	  module will be called sbc_epx_c3.
1626
1627config INTEL_MEI_WDT
1628	tristate "Intel MEI iAMT Watchdog"
1629	depends on INTEL_MEI && X86
1630	select WATCHDOG_CORE
1631	help
1632	  A device driver for the Intel MEI iAMT watchdog.
1633
1634	  The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1635	  Whenever the OS hangs or crashes, iAMT will send an event
1636	  to any subscriber to this event. The watchdog doesn't reset the
1637	  the platform.
1638
1639	  To compile this driver as a module, choose M here:
1640	  the module will be called mei_wdt.
1641
1642config NI903X_WDT
1643	tristate "NI 903x/913x Watchdog"
1644	depends on X86 && ACPI
1645	select WATCHDOG_CORE
1646	help
1647	  This is the driver for the watchdog timer on the National Instruments
1648	  903x/913x real-time controllers.
1649
1650	  To compile this driver as a module, choose M here: the module will be
1651	  called ni903x_wdt.
1652
1653config NIC7018_WDT
1654	tristate "NIC7018 Watchdog"
1655	depends on X86 && ACPI
1656	select WATCHDOG_CORE
1657	help
1658	  Support for National Instruments NIC7018 Watchdog.
1659
1660	  To compile this driver as a module, choose M here: the module will be
1661	  called nic7018_wdt.
1662
1663config SIEMENS_SIMATIC_IPC_WDT
1664	tristate "Siemens Simatic IPC Watchdog"
1665	depends on SIEMENS_SIMATIC_IPC
1666	select WATCHDOG_CORE
1667	select P2SB
1668	help
1669	  This driver adds support for several watchdogs found in Industrial
1670	  PCs from Siemens.
1671
1672	  To compile this driver as a module, choose M here: the module will be
1673	  called simatic-ipc-wdt.
1674
1675# M68K Architecture
1676
1677config M54xx_WATCHDOG
1678	tristate "MCF54xx watchdog support"
1679	depends on M548x
1680	help
1681	  To compile this driver as a module, choose M here: the
1682	  module will be called m54xx_wdt.
1683
1684# MicroBlaze Architecture
1685
1686# MIPS Architecture
1687
1688config ATH79_WDT
1689	tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1690	depends on ATH79 || (ARM && COMPILE_TEST)
1691	help
1692	  Hardware driver for the built-in watchdog timer on the Atheros
1693	  AR71XX/AR724X/AR913X SoCs.
1694
1695config BCM47XX_WDT
1696	tristate "Broadcom BCM47xx Watchdog Timer"
1697	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1698	select WATCHDOG_CORE
1699	help
1700	  Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1701
1702config RC32434_WDT
1703	tristate "IDT RC32434 SoC Watchdog Timer"
1704	depends on MIKROTIK_RB532
1705	help
1706	  Hardware driver for the IDT RC32434 SoC built-in
1707	  watchdog timer.
1708
1709	  To compile this driver as a module, choose M here: the
1710	  module will be called rc32434_wdt.
1711
1712config INDYDOG
1713	tristate "Indy/I2 Hardware Watchdog"
1714	depends on SGI_HAS_INDYDOG
1715	help
1716	  Hardware driver for the Indy's/I2's watchdog. This is a
1717	  watchdog timer that will reboot the machine after a 60 second
1718	  timer expired and no process has written to /dev/watchdog during
1719	  that time.
1720
1721config JZ4740_WDT
1722	tristate "Ingenic jz4740 SoC hardware watchdog"
1723	depends on MIPS
1724	depends on COMMON_CLK
1725	select WATCHDOG_CORE
1726	select MFD_SYSCON
1727	help
1728	  Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1729
1730config WDT_MTX1
1731	tristate "MTX-1 Hardware Watchdog"
1732	depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1733	help
1734	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
1735	  will reboot the machine after a 100 seconds timer expired.
1736
1737config SIBYTE_WDOG
1738	tristate "Sibyte SoC hardware watchdog"
1739	depends on CPU_SB1
1740	help
1741	  Watchdog driver for the built in watchdog hardware in Sibyte
1742	  SoC processors.  There are apparently two watchdog timers
1743	  on such processors; this driver supports only the first one,
1744	  because currently Linux only supports exporting one watchdog
1745	  to userspace.
1746
1747	  To compile this driver as a loadable module, choose M here.
1748	  The module will be called sb_wdog.
1749
1750config AR7_WDT
1751	tristate "TI AR7 Watchdog Timer"
1752	depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1753	help
1754	  Hardware driver for the TI AR7 Watchdog Timer.
1755
1756config TXX9_WDT
1757	tristate "Toshiba TXx9 Watchdog Timer"
1758	depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1759	select WATCHDOG_CORE
1760	help
1761	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1762
1763config OCTEON_WDT
1764	tristate "Cavium OCTEON SOC family Watchdog Timer"
1765	depends on CAVIUM_OCTEON_SOC
1766	default y
1767	select WATCHDOG_CORE
1768	select EXPORT_UASM if OCTEON_WDT = m
1769	help
1770	  Hardware driver for OCTEON's on chip watchdog timer.
1771	  Enables the watchdog for all cores running Linux. It
1772	  installs a NMI handler and pokes the watchdog based on an
1773	  interrupt.  On first expiration of the watchdog, the
1774	  interrupt handler pokes it.  The second expiration causes an
1775	  NMI that prints a message. The third expiration causes a
1776	  global soft reset.
1777
1778	  When userspace has /dev/watchdog open, no poking is done
1779	  from the first interrupt, it is then only poked when the
1780	  device is written.
1781
1782config BCM2835_WDT
1783	tristate "Broadcom BCM2835 hardware watchdog"
1784	depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1785	select WATCHDOG_CORE
1786	help
1787	  Watchdog driver for the built in watchdog hardware in Broadcom
1788	  BCM2835 SoC.
1789
1790	  To compile this driver as a loadable module, choose M here.
1791	  The module will be called bcm2835_wdt.
1792
1793config BCM_KONA_WDT
1794	tristate "BCM Kona Watchdog"
1795	depends on ARCH_BCM_MOBILE || COMPILE_TEST
1796	select WATCHDOG_CORE
1797	help
1798	  Support for the watchdog timer on the following Broadcom BCM281xx
1799	  family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1800	  BCM28155 variants.
1801
1802	  Say 'Y' or 'M' here to enable the driver. The module will be called
1803	  bcm_kona_wdt.
1804
1805config BCM_KONA_WDT_DEBUG
1806	bool "DEBUGFS support for BCM Kona Watchdog"
1807	depends on BCM_KONA_WDT
1808	help
1809	  If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1810	  access to the driver's internal data structures as well as watchdog
1811	  timer hardware registres.
1812
1813	  If in doubt, say 'N'.
1814
1815config BCM7038_WDT
1816	tristate "BCM63xx/BCM7038 Watchdog"
1817	select WATCHDOG_CORE
1818	depends on HAS_IOMEM
1819	depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1820	help
1821	  Watchdog driver for the built-in hardware in Broadcom 7038 and
1822	  later SoCs used in set-top boxes.  BCM7038 was made public
1823	  during the 2004 CES, and since then, many Broadcom chips use this
1824	  watchdog block, including some cable modem chips and DSL (63xx)
1825	  chips.
1826
1827config IMGPDC_WDT
1828	tristate "Imagination Technologies PDC Watchdog Timer"
1829	depends on HAS_IOMEM
1830	depends on MIPS || COMPILE_TEST
1831	select WATCHDOG_CORE
1832	help
1833	  Driver for Imagination Technologies PowerDown Controller
1834	  Watchdog Timer.
1835
1836	  To compile this driver as a loadable module, choose M here.
1837	  The module will be called imgpdc_wdt.
1838
1839config LANTIQ_WDT
1840	tristate "Lantiq SoC watchdog"
1841	depends on LANTIQ
1842	select WATCHDOG_CORE
1843	help
1844	  Hardware driver for the Lantiq SoC Watchdog Timer.
1845
1846config LOONGSON1_WDT
1847	tristate "Loongson1 SoC hardware watchdog"
1848	depends on MACH_LOONGSON32
1849	select WATCHDOG_CORE
1850	help
1851	  Hardware driver for the Loongson1 SoC Watchdog Timer.
1852
1853config RALINK_WDT
1854	tristate "Ralink SoC watchdog"
1855	select WATCHDOG_CORE
1856	depends on RALINK
1857	help
1858	  Hardware driver for the Ralink SoC Watchdog Timer.
1859
1860config GXP_WATCHDOG
1861	tristate "HPE GXP watchdog support"
1862	depends on ARCH_HPE_GXP
1863	select WATCHDOG_CORE
1864	help
1865	  Say Y here to include support for the watchdog timer
1866	  in HPE GXP SoCs.
1867
1868	  To compile this driver as a module, choose M here.
1869	  The module will be called gxp-wdt.
1870
1871config MT7621_WDT
1872	tristate "Mediatek SoC watchdog"
1873	select WATCHDOG_CORE
1874	select REGMAP_MMIO
1875	select MFD_SYSCON
1876	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1877	help
1878	  Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1879
1880config PIC32_WDT
1881	tristate "Microchip PIC32 hardware watchdog"
1882	select WATCHDOG_CORE
1883	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1884	help
1885	  Watchdog driver for the built in watchdog hardware in a PIC32.
1886
1887	  Configuration bits must be set appropriately for the watchdog to be
1888	  controlled by this driver.
1889
1890	  To compile this driver as a loadable module, choose M here.
1891	  The module will be called pic32-wdt.
1892
1893config PIC32_DMT
1894	tristate "Microchip PIC32 Deadman Timer"
1895	select WATCHDOG_CORE
1896	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1897	help
1898	  Watchdog driver for PIC32 instruction fetch counting timer. This
1899	  specific timer is typically be used in mission critical and safety
1900	  critical applications, where any single failure of the software
1901	  functionality and sequencing must be detected.
1902
1903	  To compile this driver as a loadable module, choose M here.
1904	  The module will be called pic32-dmt.
1905
1906# PARISC Architecture
1907
1908# POWERPC Architecture
1909
1910config GEF_WDT
1911	tristate "GE Watchdog Timer"
1912	depends on GE_FPGA
1913	help
1914	  Watchdog timer found in a number of GE single board computers.
1915
1916config MPC5200_WDT
1917	bool "MPC52xx Watchdog Timer"
1918	depends on PPC_MPC52xx || COMPILE_TEST
1919	help
1920	  Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1921
1922config 8xxx_WDT
1923	tristate "MPC8xxx Platform Watchdog Timer"
1924	depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1925	select WATCHDOG_CORE
1926	help
1927	  This driver is for a SoC level watchdog that exists on some
1928	  Freescale PowerPC processors. So far this driver supports:
1929	  - MPC8xx watchdogs
1930	  - MPC83xx watchdogs
1931	  - MPC86xx watchdogs
1932
1933	  For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1934
1935config PIKA_WDT
1936	tristate "PIKA FPGA Watchdog"
1937	depends on WARP || (PPC64 && COMPILE_TEST)
1938	default y
1939	help
1940	  This enables the watchdog in the PIKA FPGA. Currently used on
1941	  the Warp platform.
1942
1943config BOOKE_WDT
1944	tristate "PowerPC Book-E Watchdog Timer"
1945	depends on BOOKE || 4xx
1946	select WATCHDOG_CORE
1947	help
1948	  Watchdog driver for PowerPC Book-E chips, such as the Freescale
1949	  MPC85xx SOCs and the IBM PowerPC 440.
1950
1951	  Please see Documentation/watchdog/watchdog-api.rst for
1952	  more information.
1953
1954config BOOKE_WDT_DEFAULT_TIMEOUT
1955	int "PowerPC Book-E Watchdog Timer Default Timeout"
1956	depends on BOOKE_WDT
1957	default 38 if PPC_E500
1958	range 0 63 if PPC_E500
1959	default 3 if !PPC_E500
1960	range 0 3 if !PPC_E500
1961	help
1962	  Select the default watchdog timer period to be used by the PowerPC
1963	  Book-E watchdog driver.  A watchdog "event" occurs when the bit
1964	  position represented by this number transitions from zero to one.
1965
1966	  For Freescale Book-E processors, this is a number between 0 and 63.
1967	  For other Book-E processors, this is a number between 0 and 3.
1968
1969	  The value can be overridden by the wdt_period command-line parameter.
1970
1971config MEN_A21_WDT
1972	tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1973	select WATCHDOG_CORE
1974	depends on GPIOLIB || COMPILE_TEST
1975	help
1976	  Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1977
1978	  The driver can also be built as a module. If so, the module will be
1979	  called mena21_wdt.
1980
1981	  If unsure select N here.
1982
1983# PPC64 Architecture
1984
1985config PSERIES_WDT
1986	tristate "POWER Architecture Platform Watchdog Timer"
1987	depends on PPC_PSERIES
1988	select WATCHDOG_CORE
1989	help
1990	  Driver for virtual watchdog timers provided by PAPR
1991	  hypervisors (e.g. PowerVM, KVM).
1992
1993config WATCHDOG_RTAS
1994	tristate "RTAS watchdog"
1995	depends on PPC_RTAS
1996	help
1997	  This driver adds watchdog support for the RTAS watchdog.
1998
1999	  To compile this driver as a module, choose M here. The module
2000	  will be called wdrtas.
2001
2002# RISC-V Architecture
2003
2004config STARFIVE_WATCHDOG
2005	tristate "StarFive Watchdog support"
2006	depends on ARCH_STARFIVE || COMPILE_TEST
2007	select WATCHDOG_CORE
2008	default ARCH_STARFIVE
2009	help
2010	  Say Y here to support the watchdog of StarFive JH7100 and JH7110
2011	  SoC. This driver can also be built as a module if choose M.
2012
2013# S390 Architecture
2014
2015config DIAG288_WATCHDOG
2016	tristate "System z diag288 Watchdog"
2017	depends on S390
2018	select WATCHDOG_CORE
2019	help
2020	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
2021	  provide a virtual watchdog timer to their guest that cause a
2022	  user define Control Program command to be executed after a
2023	  timeout.
2024	  LPAR provides a very similar interface. This driver handles
2025	  both.
2026
2027	  To compile this driver as a module, choose M here. The module
2028	  will be called diag288_wdt.
2029
2030# SUPERH (sh + sh64) Architecture
2031
2032config SH_WDT
2033	tristate "SuperH Watchdog"
2034	depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2035	select WATCHDOG_CORE
2036	help
2037	  This driver adds watchdog support for the integrated watchdog in the
2038	  SuperH processors. If you have one of these processors and wish
2039	  to have watchdog support enabled, say Y, otherwise say N.
2040
2041	  As a side note, saying Y here will automatically boost HZ to 1000
2042	  so that the timer has a chance to clear the overflow counter. On
2043	  slower systems (such as the SH-2 and SH-3) this will likely yield
2044	  some performance issues. As such, the WDT should be avoided here
2045	  unless it is absolutely necessary.
2046
2047	  To compile this driver as a module, choose M here: the
2048	  module will be called shwdt.
2049
2050# SPARC Architecture
2051
2052# SPARC64 Architecture
2053
2054config WATCHDOG_CP1XXX
2055	tristate "CP1XXX Hardware Watchdog support"
2056	depends on SPARC64 && PCI
2057	help
2058	  This is the driver for the hardware watchdog timers present on
2059	  Sun Microsystems CompactPCI models CP1400 and CP1500.
2060
2061	  To compile this driver as a module, choose M here: the
2062	  module will be called cpwatchdog.
2063
2064	  If you do not have a CompactPCI model CP1400 or CP1500, or
2065	  another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2066	  you should say N to this option.
2067
2068config WATCHDOG_RIO
2069	tristate "RIO Hardware Watchdog support"
2070	depends on SPARC64 && PCI
2071	help
2072	  Say Y here to support the hardware watchdog capability on Sun RIO
2073	  machines.  The watchdog timeout period is normally one minute but
2074	  can be changed with a boot-time parameter.
2075
2076config WATCHDOG_SUN4V
2077	tristate "Sun4v Watchdog support"
2078	select WATCHDOG_CORE
2079	depends on SPARC64
2080	help
2081	  Say Y here to support the hypervisor watchdog capability embedded
2082	  in the SPARC sun4v architecture.
2083
2084	  To compile this driver as a module, choose M here. The module will
2085	  be called sun4v_wdt.
2086
2087# XTENSA Architecture
2088
2089# Xen Architecture
2090
2091config XEN_WDT
2092	tristate "Xen Watchdog support"
2093	depends on XEN
2094	select WATCHDOG_CORE
2095	help
2096	  Say Y here to support the hypervisor watchdog capability provided
2097	  by Xen 4.0 and newer.  The watchdog timeout period is normally one
2098	  minute but can be changed with a boot-time parameter.
2099
2100config UML_WATCHDOG
2101	tristate "UML watchdog"
2102	depends on UML || COMPILE_TEST
2103
2104#
2105# ISA-based Watchdog Cards
2106#
2107
2108comment "ISA-based Watchdog Cards"
2109	depends on ISA
2110
2111config PCWATCHDOG
2112	tristate "Berkshire Products ISA-PC Watchdog"
2113	depends on ISA
2114	help
2115	  This is the driver for the Berkshire Products ISA-PC Watchdog card.
2116	  This card simply watches your kernel to make sure it doesn't freeze,
2117	  and if it does, it reboots your computer after a certain amount of
2118	  time. This driver is like the WDT501 driver but for different
2119	  hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2120	  The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2121
2122	  To compile this driver as a module, choose M here: the
2123	  module will be called pcwd.
2124
2125	  Most people will say N.
2126
2127config MIXCOMWD
2128	tristate "Mixcom Watchdog"
2129	depends on ISA
2130	help
2131	  This is a driver for the Mixcom hardware watchdog cards.  This
2132	  watchdog simply watches your kernel to make sure it doesn't freeze,
2133	  and if it does, it reboots your computer after a certain amount of
2134	  time.
2135
2136	  To compile this driver as a module, choose M here: the
2137	  module will be called mixcomwd.
2138
2139	  Most people will say N.
2140
2141config WDT
2142	tristate "WDT Watchdog timer"
2143	depends on ISA
2144	help
2145	  If you have a WDT500P or WDT501P watchdog board, say Y here,
2146	  otherwise N. It is not possible to probe for this board, which means
2147	  that you have to inform the kernel about the IO port and IRQ that
2148	  is needed (you can do this via the io and irq parameters)
2149
2150	  To compile this driver as a module, choose M here: the
2151	  module will be called wdt.
2152
2153#
2154# PCI-based Watchdog Cards
2155#
2156
2157comment "PCI-based Watchdog Cards"
2158	depends on PCI
2159
2160config PCIPCWATCHDOG
2161	tristate "Berkshire Products PCI-PC Watchdog"
2162	depends on PCI
2163	help
2164	  This is the driver for the Berkshire Products PCI-PC Watchdog card.
2165	  This card simply watches your kernel to make sure it doesn't freeze,
2166	  and if it does, it reboots your computer after a certain amount of
2167	  time. The card can also monitor the internal temperature of the PC.
2168	  More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2169
2170	  To compile this driver as a module, choose M here: the
2171	  module will be called pcwd_pci.
2172
2173	  Most people will say N.
2174
2175config WDTPCI
2176	tristate "PCI-WDT500/501 Watchdog timer"
2177	depends on PCI
2178	help
2179	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2180
2181	  If you have a PCI-WDT501 watchdog board then you can enable the
2182	  temperature sensor by setting the type parameter to 501.
2183
2184	  If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2185	  can do this via the tachometer parameter. Only do this if you have a
2186	  fan tachometer actually set up.
2187
2188	  To compile this driver as a module, choose M here: the
2189	  module will be called wdt_pci.
2190
2191#
2192# USB-based Watchdog Cards
2193#
2194
2195comment "USB-based Watchdog Cards"
2196	depends on USB
2197
2198config USBPCWATCHDOG
2199	tristate "Berkshire Products USB-PC Watchdog"
2200	depends on USB
2201	help
2202	  This is the driver for the Berkshire Products USB-PC Watchdog card.
2203	  This card simply watches your kernel to make sure it doesn't freeze,
2204	  and if it does, it reboots your computer after a certain amount of
2205	  time. The card can also monitor the internal temperature of the PC.
2206	  More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2207
2208	  To compile this driver as a module, choose M here: the
2209	  module will be called pcwd_usb.
2210
2211	  Most people will say N.
2212
2213config KEEMBAY_WATCHDOG
2214	tristate "Intel Keem Bay SoC non-secure watchdog"
2215	depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2216	select WATCHDOG_CORE
2217	help
2218	  This option enable support for an In-secure watchdog timer driver for
2219	  Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2220	  count unit. An interrupt will be triggered, when the count crosses
2221	  the threshold configured in the register.
2222
2223	  To compile this driver as a module, choose M here: the
2224	  module will be called keembay_wdt.
2225
2226endif # WATCHDOG
2227