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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 BD96801_WATCHDOG
185	tristate "ROHM BD96801 PMIC Watchdog"
186	depends on MFD_ROHM_BD96801
187	select WATCHDOG_CORE
188	help
189	  Support for the watchdog in the ROHM BD96801 PMIC. Watchdog can be
190	  configured to only generate IRQ or to trigger system reset via reset
191	  pin.
192
193	  Say Y here to include support for the ROHM BD96801 watchdog.
194	  Alternatively say M to compile the driver as a module,
195	  which will be called bd96801_wdt.
196
197config CROS_EC_WATCHDOG
198	tristate "ChromeOS EC-based watchdog"
199	select WATCHDOG_CORE
200	depends on CROS_EC
201	help
202	  Watchdog driver for Chromebook devices equipped with embedded controller.
203	  Trigger event is recorded in EC and checked on the subsequent boot.
204
205	  To compile this driver as a module, choose M here: the
206	  module will be called cros_ec_wdt.
207
208config DA9052_WATCHDOG
209	tristate "Dialog DA9052 Watchdog"
210	depends on PMIC_DA9052 || COMPILE_TEST
211	select WATCHDOG_CORE
212	help
213	  Support for the watchdog in the DA9052 PMIC. Watchdog trigger
214	  cause system reset.
215
216	  Say Y here to include support for the DA9052 watchdog.
217	  Alternatively say M to compile the driver as a module,
218	  which will be called da9052_wdt.
219
220config DA9055_WATCHDOG
221	tristate "Dialog Semiconductor DA9055 Watchdog"
222	depends on MFD_DA9055 || COMPILE_TEST
223	select WATCHDOG_CORE
224	help
225	  If you say yes here you get support for watchdog on the Dialog
226	  Semiconductor DA9055 PMIC.
227
228	  This driver can also be built as a module.  If so, the module
229	  will be called da9055_wdt.
230
231config DA9063_WATCHDOG
232	tristate "Dialog DA9063 Watchdog"
233	depends on MFD_DA9063 || COMPILE_TEST
234	depends on I2C
235	select WATCHDOG_CORE
236	help
237	  Support for the watchdog in the DA9063 PMIC.
238
239	  This driver can be built as a module. The module name is da9063_wdt.
240
241config DA9062_WATCHDOG
242	tristate "Dialog DA9062/61 Watchdog"
243	depends on MFD_DA9062 || COMPILE_TEST
244	depends on I2C
245	select WATCHDOG_CORE
246	help
247	  Support for the watchdog in the DA9062 and DA9061 PMICs.
248
249	  This driver can be built as a module. The module name is da9062_wdt.
250
251config GPIO_WATCHDOG
252	tristate "Watchdog device controlled through GPIO-line"
253	depends on OF_GPIO
254	select WATCHDOG_CORE
255	help
256	  If you say yes here you get support for watchdog device
257	  controlled through GPIO-line.
258
259config GPIO_WATCHDOG_ARCH_INITCALL
260	bool "Register the watchdog as early as possible"
261	depends on GPIO_WATCHDOG=y
262	help
263	  In some situations, the default initcall level (module_init)
264	  in not early enough in the boot process to avoid the watchdog
265	  to be triggered.
266	  If you say yes here, the initcall level would be raised to
267	  arch_initcall.
268	  If in doubt, say N.
269
270config LENOVO_SE10_WDT
271	tristate "Lenovo SE10 Watchdog"
272	depends on (X86 && DMI) || COMPILE_TEST
273	depends on HAS_IOPORT
274	select WATCHDOG_CORE
275	help
276	  If you say yes here you get support for the watchdog
277	  functionality for the Lenovo SE10 platform.
278
279	  This driver can also be built as a module. If so, the module
280	  will be called lenovo-se10-wdt.
281
282config MENF21BMC_WATCHDOG
283	tristate "MEN 14F021P00 BMC Watchdog"
284	depends on MFD_MENF21BMC || COMPILE_TEST
285	depends on I2C
286	select WATCHDOG_CORE
287	help
288	  Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
289
290	  This driver can also be built as a module. If so the module
291	  will be called menf21bmc_wdt.
292
293config MENZ069_WATCHDOG
294	tristate "MEN 16Z069 Watchdog"
295	depends on MCB
296	select WATCHDOG_CORE
297	help
298	  Say Y here to include support for the MEN 16Z069 Watchdog.
299
300	  This driver can also be built as a module. If so the module
301	  will be called menz069_wdt.
302
303config WDAT_WDT
304	tristate "ACPI Watchdog Action Table (WDAT)"
305	depends on ACPI
306	select WATCHDOG_CORE
307	select ACPI_WATCHDOG
308	help
309	  This driver adds support for systems with ACPI Watchdog Action
310	  Table (WDAT) table. Servers typically have this but it can be
311	  found on some desktop machines as well. This driver will take
312	  over the native iTCO watchdog driver found on many Intel CPUs.
313
314	  To compile this driver as module, choose M here: the module will
315	  be called wdat_wdt.
316
317config WM831X_WATCHDOG
318	tristate "WM831x watchdog"
319	depends on MFD_WM831X
320	select WATCHDOG_CORE
321	help
322	  Support for the watchdog in the WM831x AudioPlus PMICs.  When
323	  the watchdog triggers the system will be reset.
324
325config WM8350_WATCHDOG
326	tristate "WM8350 watchdog"
327	depends on MFD_WM8350
328	select WATCHDOG_CORE
329	help
330	  Support for the watchdog in the WM8350 AudioPlus PMIC.  When
331	  the watchdog triggers the system will be reset.
332
333config XILINX_WATCHDOG
334	tristate "Xilinx Watchdog timer"
335	depends on HAS_IOMEM
336	select WATCHDOG_CORE
337	help
338	  Watchdog driver for the xps_timebase_wdt IP core.
339
340	  To compile this driver as a module, choose M here: the
341	  module will be called of_xilinx_wdt.
342
343config XILINX_WINDOW_WATCHDOG
344	tristate "Xilinx window watchdog timer"
345	depends on HAS_IOMEM
346	depends on ARM64 || COMPILE_TEST
347	select WATCHDOG_CORE
348	help
349	  Window watchdog driver for the versal_wwdt IP core.
350	  Window watchdog timer(WWDT) contains closed(first) and
351	  open(second) window with 32 bit width. Write to the watchdog
352	  timer within predefined window periods of time. This means
353	  a period that is not too soon and a period that is not too
354	  late. The WWDT has to be restarted within the open window time.
355	  If software tries to restart WWDT outside of the open window
356	  time period, it generates a reset.
357
358	  To compile this driver as a module, choose M here: the
359	  module will be called xilinx_wwdt.
360
361config ZIIRAVE_WATCHDOG
362	tristate "Zodiac RAVE Watchdog Timer"
363	depends on I2C
364	select WATCHDOG_CORE
365	help
366	  Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
367	  Processor.
368
369	  To compile this driver as a module, choose M here: the
370	  module will be called ziirave_wdt.
371
372config RAVE_SP_WATCHDOG
373	tristate "RAVE SP Watchdog timer"
374	depends on RAVE_SP_CORE
375	depends on NVMEM || !NVMEM
376	select WATCHDOG_CORE
377	help
378	  Support for the watchdog on RAVE SP device.
379
380config MLX_WDT
381	tristate "Mellanox Watchdog"
382	depends on MELLANOX_PLATFORM || COMPILE_TEST
383	select WATCHDOG_CORE
384	select REGMAP
385	help
386	  This is the driver for the hardware watchdog on Mellanox systems.
387	  If you are going to use it, say Y here, otherwise N.
388	  This driver can be used together with the watchdog daemon.
389	  It can also watch your kernel to make sure it doesn't freeze,
390	  and if it does, it reboots your system after a certain amount of
391	  time.
392
393	  To compile this driver as a module, choose M here: the
394	  module will be called mlx-wdt.
395
396config SL28CPLD_WATCHDOG
397	tristate "Kontron sl28cpld Watchdog"
398	depends on MFD_SL28CPLD || COMPILE_TEST
399	select WATCHDOG_CORE
400	help
401	  Say Y here to include support for the watchdog timer
402	  on the Kontron sl28 CPLD.
403
404	  To compile this driver as a module, choose M here: the
405	  module will be called sl28cpld_wdt.
406
407# ALPHA Architecture
408
409# ARM Architecture
410
411config ARM_SP805_WATCHDOG
412	tristate "ARM SP805 Watchdog"
413	depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
414	select WATCHDOG_CORE
415	help
416	  ARM Primecell SP805 Watchdog timer. This will reboot your system when
417	  the timeout is reached.
418
419config ARM_SBSA_WATCHDOG
420	tristate "ARM SBSA Generic Watchdog"
421	depends on ARM64
422	depends on ARM_ARCH_TIMER
423	select WATCHDOG_CORE
424	help
425	  ARM SBSA Generic Watchdog has two stage timeouts:
426	  the first signal (WS0) is for alerting the system by interrupt,
427	  the second one (WS1) is a real hardware reset.
428	  More details: ARM DEN0029B - Server Base System Architecture (SBSA)
429
430	  This driver can operate ARM SBSA Generic Watchdog as a single stage
431	  or a two stages watchdog, it depends on the module parameter "action".
432
433	  Note: the maximum timeout in the two stages mode is half of that in
434	  the single stage mode.
435
436	  To compile this driver as module, choose M here: The module
437	  will be called sbsa_gwdt.
438
439config ARMADA_37XX_WATCHDOG
440	tristate "Armada 37xx watchdog"
441	depends on ARCH_MVEBU || COMPILE_TEST
442	depends on HAS_IOMEM
443	select MFD_SYSCON
444	select WATCHDOG_CORE
445	help
446	   Say Y here to include support for the watchdog timer found on
447	   Marvell Armada 37xx SoCs.
448	   To compile this driver as a module, choose M here: the
449	   module will be called armada_37xx_wdt.
450
451config ASM9260_WATCHDOG
452	tristate "Alphascale ASM9260 watchdog"
453	depends on MACH_ASM9260 || COMPILE_TEST
454	depends on OF
455	select WATCHDOG_CORE
456	select RESET_CONTROLLER
457	help
458	  Watchdog timer embedded into Alphascale asm9260 chips. This will
459	  reboot your system when the timeout is reached.
460
461config AT91RM9200_WATCHDOG
462	tristate "AT91RM9200 watchdog"
463	depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
464	help
465	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
466	  system when the timeout is reached.
467
468config AT91SAM9X_WATCHDOG
469	tristate "AT91SAM9X / AT91CAP9 watchdog"
470	depends on ARCH_AT91 || COMPILE_TEST
471	select WATCHDOG_CORE
472	help
473	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
474	  reboot your system when the timeout is reached.
475
476config SAMA5D4_WATCHDOG
477	tristate "Atmel SAMA5D4 Watchdog Timer"
478	depends on ARCH_AT91 || COMPILE_TEST
479	select WATCHDOG_CORE
480	help
481	  Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
482	  Its Watchdog Timer Mode Register can be written more than once.
483	  This will reboot your system when the timeout is reached.
484
485config CADENCE_WATCHDOG
486	tristate "Cadence Watchdog Timer"
487	depends on HAS_IOMEM
488	select WATCHDOG_CORE
489	help
490	  Say Y here if you want to include support for the watchdog
491	  timer in the Xilinx Zynq.
492
493config 21285_WATCHDOG
494	tristate "DC21285 watchdog"
495	depends on FOOTBRIDGE
496	help
497	  The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
498	  here if you wish to use this. Alternatively say M to compile the
499	  driver as a module, which will be called wdt285.
500
501	  This driver does not work on all machines. In particular, early CATS
502	  boards have hardware problems that will cause the machine to simply
503	  lock up if the watchdog fires.
504
505	  "If in doubt, leave it out" - say N.
506
507config 977_WATCHDOG
508	tristate "NetWinder WB83C977 watchdog"
509	depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
510	depends on HAS_IOPORT
511	help
512	  Say Y here to include support for the WB977 watchdog included in
513	  NetWinder machines. Alternatively say M to compile the driver as
514	  a module, which will be called wdt977.
515
516	  Not sure? It's safe to say N.
517
518config FTWDT010_WATCHDOG
519	tristate "Faraday Technology FTWDT010 watchdog"
520	depends on ARM || COMPILE_TEST
521	select WATCHDOG_CORE
522	default ARCH_GEMINI
523	help
524	  Say Y here if to include support for the Faraday Technology
525	  FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
526	  family of devices.
527
528	  To compile this driver as a module, choose M here: the
529	  module will be called ftwdt010_wdt.
530
531config IXP4XX_WATCHDOG
532	tristate "IXP4xx Watchdog"
533	depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
534	select WATCHDOG_CORE
535	help
536	  Say Y here if to include support for the watchdog timer
537	  in the Intel IXP4xx network processors. This driver can
538	  be built as a module by choosing M. The module will
539	  be called ixp4xx_wdt.
540
541	  Note: The internal IXP4xx watchdog does a soft CPU reset
542	  which doesn't reset any peripherals. There are circumstances
543	  where the watchdog will fail to reset the board correctly
544	  (e.g., if the boot ROM is in an unreadable state).
545
546	  Say N if you are unsure.
547
548config S3C2410_WATCHDOG
549	tristate "S3C6410/S5Pv210/Exynos Watchdog"
550	depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
551	select WATCHDOG_CORE
552	select MFD_SYSCON if ARCH_EXYNOS
553	help
554	  Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
555	  SoCs. This will reboot the system when the timer expires with
556	  the watchdog enabled.
557
558	  The driver is limited by the speed of the system's PCLK
559	  signal, so with reasonably fast systems (PCLK around 50-66MHz)
560	  then watchdog intervals of over approximately 20seconds are
561	  unavailable.
562
563	  Choose Y/M here only if you build for such Samsung SoC.
564	  The driver can be built as a module by choosing M, and will
565	  be called s3c2410_wdt.
566
567config SA1100_WATCHDOG
568	tristate "SA1100/PXA2xx watchdog"
569	depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
570	help
571	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
572	  reboot your system when timeout is reached.
573
574	  NOTE: once enabled, this timer cannot be disabled.
575
576	  To compile this driver as a module, choose M here: the
577	  module will be called sa1100_wdt.
578
579config DW_WATCHDOG
580	tristate "Synopsys DesignWare watchdog"
581	depends on HAS_IOMEM
582	select WATCHDOG_CORE
583	help
584	  Say Y here if to include support for the Synopsys DesignWare
585	  watchdog timer found in many chips.
586	  To compile this driver as a module, choose M here: the
587	  module will be called dw_wdt.
588
589config EP93XX_WATCHDOG
590	tristate "EP93xx Watchdog"
591	depends on ARCH_EP93XX || COMPILE_TEST
592	select WATCHDOG_CORE
593	help
594	  Say Y here if to include support for the watchdog timer
595	  embedded in the Cirrus Logic EP93xx family of devices.
596
597	  To compile this driver as a module, choose M here: the
598	  module will be called ep93xx_wdt.
599
600config OMAP_WATCHDOG
601	tristate "OMAP Watchdog"
602	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
603	select WATCHDOG_CORE
604	help
605	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
606	  Say 'Y' here to enable the
607	  OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
608
609config PNX4008_WATCHDOG
610	tristate "LPC32XX Watchdog"
611	depends on ARCH_LPC32XX || COMPILE_TEST
612	select WATCHDOG_CORE
613	help
614	  Say Y here if to include support for the watchdog timer
615	  in the LPC32XX processor.
616	  This driver can be built as a module by choosing M. The module
617	  will be called pnx4008_wdt.
618
619	  Say N if you are unsure.
620
621config DAVINCI_WATCHDOG
622	tristate "DaVinci watchdog"
623	depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
624	select WATCHDOG_CORE
625	help
626	  Say Y here if to include support for the watchdog timer
627	  in the DaVinci DM644x/DM646x or Keystone processors.
628	  To compile this driver as a module, choose M here: the
629	  module will be called davinci_wdt.
630
631	  NOTE: once enabled, this timer cannot be disabled.
632	  Say N if you are unsure.
633
634config K3_RTI_WATCHDOG
635	tristate "Texas Instruments K3 RTI watchdog"
636	depends on ARCH_K3 || COMPILE_TEST
637	select WATCHDOG_CORE
638	help
639	  Say Y here if you want to include support for the K3 watchdog
640	  timer (RTI module) available in the K3 generation of processors.
641
642config ORION_WATCHDOG
643	tristate "Orion watchdog"
644	depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
645	depends on ARM
646	select WATCHDOG_CORE
647	help
648	  Say Y here if to include support for the watchdog timer
649	  in the Marvell Orion5x and Kirkwood ARM SoCs.
650	  To compile this driver as a module, choose M here: the
651	  module will be called orion_wdt.
652
653config RN5T618_WATCHDOG
654	tristate "Ricoh RN5T618 watchdog"
655	depends on MFD_RN5T618 || COMPILE_TEST
656	select WATCHDOG_CORE
657	help
658	  If you say yes here you get support for watchdog on the Ricoh
659	  RN5T618 PMIC.
660
661	  This driver can also be built as a module.  If so, the module
662	  will be called rn5t618_wdt.
663
664config SUNXI_WATCHDOG
665	tristate "Allwinner SoCs watchdog support"
666	depends on ARCH_SUNXI || COMPILE_TEST
667	select WATCHDOG_CORE
668	help
669	  Say Y here to include support for the watchdog timer
670	  in Allwinner SoCs.
671	  To compile this driver as a module, choose M here: the
672	  module will be called sunxi_wdt.
673
674config NPCM7XX_WATCHDOG
675	tristate "Nuvoton NPCM750 watchdog"
676	depends on ARCH_NPCM || COMPILE_TEST
677	default y if ARCH_NPCM7XX
678	select WATCHDOG_CORE
679	help
680	  Say Y here to include Watchdog timer support for the
681	  watchdog embedded into the NPCM7xx.
682	  This watchdog is used to reset the system and thus cannot be
683	  compiled as a module.
684
685config TWL4030_WATCHDOG
686	tristate "TWL4030 Watchdog"
687	depends on TWL4030_CORE
688	select WATCHDOG_CORE
689	help
690	  Support for TI TWL4030 watchdog.  Say 'Y' here to enable the
691	  watchdog timer support for TWL4030 chips.
692
693config STMP3XXX_RTC_WATCHDOG
694	tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
695	depends on RTC_DRV_STMP || COMPILE_TEST
696	select WATCHDOG_CORE
697	help
698	  Say Y here to include support for the watchdog timer inside
699	  the RTC for the STMP37XX/378X or i.MX23/28 SoC.
700	  To compile this driver as a module, choose M here: the
701	  module will be called stmp3xxx_rtc_wdt.
702
703config TS4800_WATCHDOG
704	tristate "TS-4800 Watchdog"
705	depends on HAS_IOMEM && OF
706	depends on SOC_IMX51 || COMPILE_TEST
707	select WATCHDOG_CORE
708	select MFD_SYSCON
709	help
710	  Technologic Systems TS-4800 has watchdog timer implemented in
711	  an external FPGA. Say Y here if you want to support for the
712	  watchdog timer on TS-4800 board.
713
714config TS72XX_WATCHDOG
715	tristate "TS-72XX SBC Watchdog"
716	depends on MACH_TS72XX || COMPILE_TEST
717	select WATCHDOG_CORE
718	help
719	  Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
720	  watchdog timer implemented in a external CPLD chip. Say Y here
721	  if you want to support for the watchdog timer on TS-72XX boards.
722
723	  To compile this driver as a module, choose M here: the
724	  module will be called ts72xx_wdt.
725
726config MAX63XX_WATCHDOG
727	tristate "Max63xx watchdog"
728	depends on HAS_IOMEM
729	select WATCHDOG_CORE
730	help
731	  Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
732
733config MAX77620_WATCHDOG
734	tristate "Maxim Max77620 Watchdog Timer"
735	depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
736	select WATCHDOG_CORE
737	help
738	  This is the driver for the Max77620 watchdog timer.
739	  Say 'Y' here to enable the watchdog timer support for
740	  MAX77620 chips. To compile this driver as a module,
741	  choose M here: the module will be called max77620_wdt.
742
743config IMX2_WDT
744	tristate "IMX2+ Watchdog"
745	depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
746	select REGMAP_MMIO
747	select WATCHDOG_CORE
748	help
749	  This is the driver for the hardware watchdog
750	  on the Freescale IMX2 and later processors.
751	  If you have one of these processors and wish to have
752	  watchdog support enabled, say Y, otherwise say N.
753
754	  To compile this driver as a module, choose M here: the
755	  module will be called imx2_wdt.
756
757config IMX_SC_WDT
758	tristate "IMX SC Watchdog"
759	depends on HAVE_ARM_SMCCC
760	depends on IMX_SCU || COMPILE_TEST
761	select WATCHDOG_CORE
762	help
763	  This is the driver for the system controller watchdog
764	  on the NXP i.MX SoCs with system controller inside, the
765	  watchdog driver will call ARM SMC API and trap into
766	  ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
767	  will request system controller to execute the operations.
768	  If you have one of these processors and wish to have
769	  watchdog support enabled, say Y, otherwise say N.
770
771	  To compile this driver as a module, choose M here: the
772	  module will be called imx_sc_wdt.
773
774config IMX7ULP_WDT
775	tristate "IMX7ULP Watchdog"
776	depends on ARCH_MXC || COMPILE_TEST
777	select WATCHDOG_CORE
778	help
779	  This is the driver for the hardware watchdog on the Freescale
780	  IMX7ULP and later processors. If you have one of these
781	  processors and wish to have watchdog support enabled,
782	  say Y, otherwise say N.
783
784	  To compile this driver as a module, choose M here: the
785	  module will be called imx7ulp_wdt.
786
787config DB500_WATCHDOG
788	tristate "ST-Ericsson DB800 watchdog"
789	depends on MFD_DB8500_PRCMU
790	select WATCHDOG_CORE
791	default y
792	help
793	  Say Y here to include Watchdog timer support for the watchdog
794	  existing in the prcmu of ST-Ericsson DB8500 platform.
795
796	  To compile this driver as a module, choose M here: the
797	  module will be called db500_wdt.
798
799config RETU_WATCHDOG
800	tristate "Retu watchdog"
801	depends on MFD_RETU
802	select WATCHDOG_CORE
803	help
804	  Retu watchdog driver for Nokia Internet Tablets (770, N800,
805	  N810). At least on N800 the watchdog cannot be disabled, so
806	  this driver is essential and you should enable it.
807
808	  To compile this driver as a module, choose M here: the
809	  module will be called retu_wdt.
810
811config MOXART_WDT
812	tristate "MOXART watchdog"
813	depends on ARCH_MOXART || COMPILE_TEST
814	help
815	  Say Y here to include Watchdog timer support for the watchdog
816	  existing on the MOXA ART SoC series platforms.
817
818	  To compile this driver as a module, choose M here: the
819	  module will be called moxart_wdt.
820
821config ST_LPC_WATCHDOG
822	tristate "STMicroelectronics LPC Watchdog"
823	depends on ARCH_STI || COMPILE_TEST
824	depends on OF
825	select WATCHDOG_CORE
826	help
827	  Say Y here to include STMicroelectronics Low Power Controller
828	  (LPC) based Watchdog timer support.
829
830	  To compile this driver as a module, choose M here: the
831	  module will be called st_lpc_wdt.
832
833config TEGRA_WATCHDOG
834	tristate "Tegra watchdog"
835	depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
836	select WATCHDOG_CORE
837	help
838	  Say Y here to include support for the watchdog timer
839	  embedded in NVIDIA Tegra SoCs.
840
841	  To compile this driver as a module, choose M here: the
842	  module will be called tegra_wdt.
843
844config QCOM_WDT
845	tristate "QCOM watchdog"
846	depends on HAS_IOMEM
847	depends on ARCH_QCOM || COMPILE_TEST
848	select WATCHDOG_CORE
849	help
850	  Say Y here to include Watchdog timer support for the watchdog found
851	  on QCOM chipsets.  Currently supported targets are the MSM8960,
852	  APQ8064, and IPQ8064.
853
854	  To compile this driver as a module, choose M here: the
855	  module will be called qcom_wdt.
856
857config MESON_GXBB_WATCHDOG
858	tristate "Amlogic Meson GXBB SoCs watchdog support"
859	depends on ARCH_MESON || COMPILE_TEST
860	select WATCHDOG_CORE
861	help
862	  Say Y here to include support for the watchdog timer
863	  in Amlogic Meson GXBB SoCs.
864	  To compile this driver as a module, choose M here: the
865	  module will be called meson_gxbb_wdt.
866
867config MESON_WATCHDOG
868	tristate "Amlogic Meson SoCs watchdog support"
869	depends on ARCH_MESON || COMPILE_TEST
870	select WATCHDOG_CORE
871	help
872	  Say Y here to include support for the watchdog timer
873	  in Amlogic Meson SoCs.
874	  To compile this driver as a module, choose M here: the
875	  module will be called meson_wdt.
876
877config MEDIATEK_WATCHDOG
878	tristate "Mediatek SoCs watchdog support"
879	depends on ARCH_MEDIATEK || COMPILE_TEST
880	default ARCH_MEDIATEK
881	select WATCHDOG_CORE
882	select RESET_CONTROLLER
883	help
884	  Say Y here to include support for the watchdog timer
885	  in Mediatek SoCs.
886	  To compile this driver as a module, choose M here: the
887	  module will be called mtk_wdt.
888
889config DIGICOLOR_WATCHDOG
890	tristate "Conexant Digicolor SoCs watchdog support"
891	depends on ARCH_DIGICOLOR || COMPILE_TEST
892	select WATCHDOG_CORE
893	help
894	  Say Y here to include support for the watchdog timer
895	  in Conexant Digicolor SoCs.
896	  To compile this driver as a module, choose M here: the
897	  module will be called digicolor_wdt.
898
899config ARM_SMC_WATCHDOG
900	tristate "ARM Secure Monitor Call based watchdog support"
901	depends on ARM || ARM64
902	depends on OF
903	depends on HAVE_ARM_SMCCC
904	select WATCHDOG_CORE
905	help
906	  Say Y here to include support for a watchdog timer
907	  implemented by the EL3 Secure Monitor on ARM platforms.
908	  Requires firmware support.
909	  To compile this driver as a module, choose M here: the
910	  module will be called arm_smc_wdt.
911
912config LPC18XX_WATCHDOG
913	tristate "LPC18xx/43xx Watchdog"
914	depends on ARCH_LPC18XX || COMPILE_TEST
915	depends on HAS_IOMEM
916	select WATCHDOG_CORE
917	help
918	  Say Y here if to include support for the watchdog timer
919	  in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
920	  processors.
921	  To compile this driver as a module, choose M here: the
922	  module will be called lpc18xx_wdt.
923
924config RENESAS_WDT
925	tristate "Renesas WDT Watchdog"
926	depends on ARCH_RENESAS || COMPILE_TEST
927	select WATCHDOG_CORE
928	help
929	  This driver adds watchdog support for the integrated watchdogs in the
930	  Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
931
932config RENESAS_RZAWDT
933	tristate "Renesas RZ/A WDT Watchdog"
934	depends on ARCH_RENESAS || COMPILE_TEST
935	select WATCHDOG_CORE
936	help
937	  This driver adds watchdog support for the integrated watchdogs in the
938	  Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
939
940config RENESAS_RZN1WDT
941	tristate "Renesas RZ/N1 watchdog"
942	depends on ARCH_RENESAS || COMPILE_TEST
943	select WATCHDOG_CORE
944	help
945	  This driver adds watchdog support for the integrated watchdogs in the
946	  Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
947
948config RENESAS_RZG2LWDT
949	tristate "Renesas RZ/G2L WDT Watchdog"
950	depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
951	depends on PM || COMPILE_TEST
952	select WATCHDOG_CORE
953	help
954	  This driver adds watchdog support for the integrated watchdogs in the
955	  Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
956
957config RENESAS_RZV2HWDT
958	tristate "Renesas RZ/V2H(P) WDT Watchdog"
959	depends on ARCH_R9A09G057 || COMPILE_TEST
960	depends on PM || COMPILE_TEST
961	select WATCHDOG_CORE
962	help
963	  This driver adds watchdog support for the integrated watchdogs in the
964	  Renesas RZ/V2H(P) SoCs. These watchdogs can be used to reset a system.
965
966config ASPEED_WATCHDOG
967	tristate "Aspeed BMC watchdog support"
968	depends on ARCH_ASPEED || COMPILE_TEST
969	select WATCHDOG_CORE
970	help
971	  Say Y here to include support for the watchdog timer
972	  in Aspeed BMC SoCs.
973
974	  This driver is required to reboot the SoC.
975
976	  To compile this driver as a module, choose M here: the
977	  module will be called aspeed_wdt.
978
979config STM32_WATCHDOG
980	tristate "STM32 Independent WatchDoG (IWDG) support"
981	depends on ARCH_STM32 || COMPILE_TEST
982	select WATCHDOG_CORE
983	default y
984	help
985	  Say Y here to include support for the watchdog timer
986	  in stm32 SoCs.
987
988	  To compile this driver as a module, choose M here: the
989	  module will be called stm32_iwdg.
990
991config STPMIC1_WATCHDOG
992	tristate "STPMIC1 PMIC watchdog support"
993	depends on MFD_STPMIC1
994	select WATCHDOG_CORE
995	help
996	  Say Y here to include watchdog support embedded into STPMIC1 PMIC.
997	  If the watchdog timer expires, stpmic1 will shut down all its power
998	  supplies.
999
1000	  To compile this driver as a module, choose M here: the
1001	  module will be called spmic1_wdt.
1002
1003config UNIPHIER_WATCHDOG
1004	tristate "UniPhier watchdog support"
1005	depends on ARCH_UNIPHIER || COMPILE_TEST
1006	depends on OF && MFD_SYSCON
1007	select WATCHDOG_CORE
1008	help
1009	  Say Y here to include support watchdog timer embedded
1010	  into the UniPhier system.
1011
1012	  To compile this driver as a module, choose M here: the
1013	  module will be called uniphier_wdt.
1014
1015config RTD119X_WATCHDOG
1016	bool "Realtek RTD119x/RTD129x watchdog support"
1017	depends on ARCH_REALTEK || COMPILE_TEST
1018	depends on OF
1019	select WATCHDOG_CORE
1020	default ARCH_REALTEK
1021	help
1022	  Say Y here to include support for the watchdog timer in
1023	  Realtek RTD1295 SoCs.
1024
1025config REALTEK_OTTO_WDT
1026	tristate "Realtek Otto MIPS watchdog support"
1027	depends on MACH_REALTEK_RTL || COMPILE_TEST
1028	depends on COMMON_CLK
1029	select WATCHDOG_CORE
1030	default MACH_REALTEK_RTL
1031	help
1032	  Say Y here to include support for the watchdog timer on Realtek
1033	  RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
1034	  notifications and system reset on timeout.
1035
1036	  When built as a module this will be called realtek_otto_wdt.
1037
1038config SPRD_WATCHDOG
1039	tristate "Spreadtrum watchdog support"
1040	depends on ARCH_SPRD || COMPILE_TEST
1041	select WATCHDOG_CORE
1042	help
1043	  Say Y here to include watchdog timer supported
1044	  by Spreadtrum system.
1045
1046config PM8916_WATCHDOG
1047	tristate "QCOM PM8916 pmic watchdog"
1048	depends on OF && MFD_SPMI_PMIC
1049	select WATCHDOG_CORE
1050	help
1051	  Say Y here to include support watchdog timer embedded into the
1052	  pm8916 module.
1053
1054config VISCONTI_WATCHDOG
1055	tristate "Toshiba Visconti series watchdog support"
1056	depends on ARCH_VISCONTI || COMPILE_TEST
1057	select WATCHDOG_CORE
1058	help
1059	  Say Y here to include support for the watchdog timer in Toshiba
1060	  Visconti SoCs.
1061
1062config MSC313E_WATCHDOG
1063	tristate "MStar MSC313e watchdog"
1064	depends on ARCH_MSTARV7 || COMPILE_TEST
1065	select WATCHDOG_CORE
1066	help
1067	  Say Y here to include support for the Watchdog timer embedded
1068	  into MStar MSC313e chips. This will reboot your system when the
1069	  timeout is reached.
1070
1071	  To compile this driver as a module, choose M here: the
1072	  module will be called msc313e_wdt.
1073
1074config APPLE_WATCHDOG
1075	tristate "Apple SoC watchdog"
1076	depends on ARCH_APPLE || COMPILE_TEST
1077	select WATCHDOG_CORE
1078	help
1079	  Say Y here to include support for the Watchdog found in Apple
1080	  SoCs such as the M1. Next to the common watchdog features this
1081	  driver is also required in order to reboot these SoCs.
1082
1083	  To compile this driver as a module, choose M here: the
1084	  module will be called apple_wdt.
1085
1086config SUNPLUS_WATCHDOG
1087	tristate "Sunplus watchdog support"
1088	depends on ARCH_SUNPLUS || COMPILE_TEST
1089	select WATCHDOG_CORE
1090	help
1091	  Say Y here to include support for the watchdog timer
1092	  in Sunplus SoCs.
1093
1094	  To compile this driver as a module, choose M here: the
1095	  module will be called sunplus_wdt.
1096
1097# X86 (i386 + ia64 + x86_64) Architecture
1098
1099config ACQUIRE_WDT
1100	tristate "Acquire SBC Watchdog Timer"
1101	depends on X86
1102	help
1103	  This is the driver for the hardware watchdog on Single Board
1104	  Computers produced by Acquire Inc (and others). This watchdog
1105	  simply watches your kernel to make sure it doesn't freeze, and if
1106	  it does, it reboots your computer after a certain amount of time.
1107
1108	  To compile this driver as a module, choose M here: the
1109	  module will be called acquirewdt.
1110
1111	  Most people will say N.
1112
1113config ADVANTECH_WDT
1114	tristate "Advantech SBC Watchdog Timer"
1115	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1116	help
1117	  If you are configuring a Linux kernel for the Advantech single-board
1118	  computer, say `Y' here to support its built-in watchdog timer
1119	  feature. More information can be found at
1120	  <https://www.advantech.com.tw/products/>
1121
1122config ADVANTECH_EC_WDT
1123	tristate "Advantech Embedded Controller Watchdog Timer"
1124	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1125	select ISA_BUS_API
1126	select WATCHDOG_CORE
1127	help
1128		This driver supports Advantech products with ITE based Embedded Controller.
1129		It does not support Advantech products with other ECs or without EC.
1130
1131config ALIM1535_WDT
1132	tristate "ALi M1535 PMU Watchdog Timer"
1133	depends on (X86 || COMPILE_TEST) && PCI
1134	help
1135	  This is the driver for the hardware watchdog on the ALi M1535 PMU.
1136
1137	  To compile this driver as a module, choose M here: the
1138	  module will be called alim1535_wdt.
1139
1140	  Most people will say N.
1141
1142config ALIM7101_WDT
1143	tristate "ALi M7101 PMU Computer Watchdog"
1144	depends on PCI
1145	help
1146	  This is the driver for the hardware watchdog on the ALi M7101 PMU
1147	  as used in the x86 Cobalt servers and also found in some
1148	  SPARC Netra servers too.
1149
1150	  To compile this driver as a module, choose M here: the
1151	  module will be called alim7101_wdt.
1152
1153	  Most people will say N.
1154
1155config EBC_C384_WDT
1156	tristate "WinSystems EBC-C384 Watchdog Timer"
1157	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1158	select ISA_BUS_API
1159	select WATCHDOG_CORE
1160	help
1161	  Enables watchdog timer support for the watchdog timer on the
1162	  WinSystems EBC-C384 motherboard. The timeout may be configured via
1163	  the timeout module parameter.
1164
1165config EXAR_WDT
1166	tristate "Exar Watchdog Timer"
1167	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1168	select WATCHDOG_CORE
1169	help
1170	  Enables watchdog timer support for the watchdog timer present
1171	  in some Exar/MaxLinear UART chips like the XR28V38x.
1172
1173	  To compile this driver as a module, choose M here: the
1174	  module will be called exar_wdt.
1175
1176config F71808E_WDT
1177	tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1178	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1179	select WATCHDOG_CORE
1180	help
1181	  This is the driver for the hardware watchdog on the Fintek F71808E,
1182	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1183	  F81866 Super I/O controllers.
1184
1185	  You can compile this driver directly into the kernel, or use
1186	  it as a module.  The module will be called f71808e_wdt.
1187
1188config SP5100_TCO
1189	tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1190	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1191	select WATCHDOG_CORE
1192	help
1193	  Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1194	  (Total Cost of Ownership) timer is a watchdog timer that will reboot
1195	  the machine after its expiration. The expiration time can be
1196	  configured with the "heartbeat" parameter.
1197
1198	  To compile this driver as a module, choose M here: the
1199	  module will be called sp5100_tco.
1200
1201config GEODE_WDT
1202	tristate "AMD Geode CS5535/CS5536 Watchdog"
1203	depends on CS5535_MFGPT
1204	help
1205	  This driver enables a watchdog capability built into the
1206	  CS5535/CS5536 companion chips for the AMD Geode GX and LX
1207	  processors.  This watchdog watches your kernel to make sure
1208	  it doesn't freeze, and if it does, it reboots your computer after
1209	  a certain amount of time.
1210
1211	  You can compile this driver directly into the kernel, or use
1212	  it as a module.  The module will be called geodewdt.
1213
1214config SC520_WDT
1215	tristate "AMD Elan SC520 processor Watchdog"
1216	depends on MELAN || COMPILE_TEST
1217	help
1218	  This is the driver for the hardware watchdog built in to the
1219	  AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1220	  This watchdog simply watches your kernel to make sure it doesn't
1221	  freeze, and if it does, it reboots your computer after a certain
1222	  amount of time.
1223
1224	  You can compile this driver directly into the kernel, or use
1225	  it as a module.  The module will be called sc520_wdt.
1226
1227config SBC_FITPC2_WATCHDOG
1228	tristate "Compulab SBC-FITPC2 watchdog"
1229	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1230	help
1231	  This is the driver for the built-in watchdog timer on the fit-PC2,
1232	  fit-PC2i, CM-iAM single-board computers made by Compulab.
1233
1234	  It's possible to enable the watchdog timer either from BIOS (F2) or
1235	  from booted Linux.
1236	  When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1237	  operational range.
1238
1239	  Entering BIOS setup temporarily disables watchdog operation regardless
1240	  of current state, so system will not be restarted while user is in
1241	  BIOS setup.
1242
1243	  Once the watchdog is enabled the system will be restarted every
1244	  "Watchdog Timer Value" period, so to prevent it user can restart or
1245	  disable the watchdog.
1246
1247	  To compile this driver as a module, choose M here: the
1248	  module will be called sbc_fitpc2_wdt.
1249
1250	  Most people will say N.
1251
1252config EUROTECH_WDT
1253	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1254	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1255	help
1256	  Enable support for the watchdog timer on the Eurotech CPU-1220 and
1257	  CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
1258	  information are at <http://www.eurotech.it/>.
1259
1260config IB700_WDT
1261	tristate "IB700 SBC Watchdog Timer"
1262	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1263	help
1264	  This is the driver for the hardware watchdog on the IB700 Single
1265	  Board Computer produced by TMC Technology (www.tmc-uk.com). This
1266	  watchdog simply watches your kernel to make sure it doesn't freeze,
1267	  and if it does, it reboots your computer after a certain amount of time.
1268
1269	  This driver is like the WDT501 driver but for slightly different
1270	  hardware.
1271
1272	  To compile this driver as a module, choose M here: the
1273	  module will be called ib700wdt.
1274
1275	  Most people will say N.
1276
1277config IBMASR
1278	tristate "IBM Automatic Server Restart"
1279	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1280	help
1281	  This is the driver for the IBM Automatic Server Restart watchdog
1282	  timer built-in into some eServer xSeries machines.
1283
1284	  To compile this driver as a module, choose M here: the
1285	  module will be called ibmasr.
1286
1287config WAFER_WDT
1288	tristate "ICP Single Board Computer Watchdog Timer"
1289	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1290	help
1291	  This is a driver for the hardware watchdog on the ICP Single
1292	  Board Computer. This driver is working on (at least) the following
1293	  IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1294
1295	  To compile this driver as a module, choose M here: the
1296	  module will be called wafer5823wdt.
1297
1298config I6300ESB_WDT
1299	tristate "Intel 6300ESB Timer/Watchdog"
1300	depends on PCI
1301	select WATCHDOG_CORE
1302	help
1303	  Hardware driver for the watchdog timer built into the Intel
1304	  6300ESB controller hub.
1305
1306	  To compile this driver as a module, choose M here: the
1307	  module will be called i6300esb.
1308
1309config IE6XX_WDT
1310	tristate "Intel Atom E6xx Watchdog"
1311	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1312	select WATCHDOG_CORE
1313	select MFD_CORE
1314	select LPC_SCH
1315	help
1316	  Hardware driver for the watchdog timer built into the Intel
1317	  Atom E6XX (TunnelCreek) processor.
1318
1319	  To compile this driver as a module, choose M here: the
1320	  module will be called ie6xx_wdt.
1321
1322config INTEL_MID_WATCHDOG
1323	tristate "Intel MID Watchdog Timer"
1324	depends on X86_INTEL_MID
1325	select WATCHDOG_CORE
1326	help
1327	  Watchdog timer driver built into the Intel SCU for Intel MID
1328	  Platforms.
1329
1330	  This driver currently supports only the watchdog evolution
1331	  implementation in SCU, available for Merrifield generation.
1332
1333	  To compile this driver as a module, choose M here.
1334
1335config ITCO_WDT
1336	tristate "Intel TCO Timer/Watchdog"
1337	depends on X86 && PCI
1338	select WATCHDOG_CORE
1339	depends on I2C || I2C=n
1340	depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1341	depends on HAS_IOPORT # for I2C_I801
1342	select LPC_ICH if !EXPERT
1343	select I2C_I801 if !EXPERT && I2C
1344	help
1345	  Hardware driver for the intel TCO timer based watchdog devices.
1346	  These drivers are included in the Intel 82801 I/O Controller
1347	  Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1348	  controller hub.
1349
1350	  The TCO (Total Cost of Ownership) timer is a watchdog timer
1351	  that will reboot the machine after its second expiration. The
1352	  expiration time can be configured with the "heartbeat" parameter.
1353
1354	  On some motherboards the driver may fail to reset the chipset's
1355	  NO_REBOOT flag which prevents the watchdog from rebooting the
1356	  machine. If this is the case you will get a kernel message like
1357	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1358
1359	  To compile this driver as a module, choose M here: the
1360	  module will be called iTCO_wdt.
1361
1362config ITCO_VENDOR_SUPPORT
1363	bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1364	depends on ITCO_WDT
1365	help
1366	  Add vendor specific support to the intel TCO timer based watchdog
1367	  devices. At this moment we only have additional support for some
1368	  SuperMicro Inc. motherboards.
1369
1370config IT8712F_WDT
1371	tristate "IT8712F (Smart Guardian) Watchdog Timer"
1372	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1373	help
1374	  This is the driver for the built-in watchdog timer on the IT8712F
1375	  Super I/0 chipset used on many motherboards.
1376
1377	  If the driver does not work, then make sure that the game port in
1378	  the BIOS is enabled.
1379
1380	  To compile this driver as a module, choose M here: the
1381	  module will be called it8712f_wdt.
1382
1383config IT87_WDT
1384	tristate "IT87 Watchdog Timer"
1385	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1386	select WATCHDOG_CORE
1387	help
1388	  This is the driver for the hardware watchdog on the ITE IT8607,
1389	  IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1390	  IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1391	  IT8783 Super I/O chips.
1392
1393	  This watchdog simply watches your kernel to make sure it doesn't
1394	  freeze, and if it does, it reboots your computer after a certain
1395	  amount of time.
1396
1397	  To compile this driver as a module, choose M here: the module will
1398	  be called it87_wdt.
1399
1400config HP_WATCHDOG
1401	tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1402	select WATCHDOG_CORE
1403	depends on (ARM64 || X86 || COMPILE_TEST) && PCI
1404	help
1405	  A software monitoring watchdog and NMI handling driver. This driver
1406	  will detect lockups and provide a stack trace. This is a driver that
1407	  will only load on an HP ProLiant system with a minimum of iLO2 support.
1408	  To compile this driver as a module, choose M here: the module will be
1409	  called hpwdt.
1410
1411config HPWDT_NMI_DECODING
1412	bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1413	depends on X86 && HP_WATCHDOG
1414	default y
1415	help
1416	  Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1417	  "Generate NMI to System" virtual button.  When an NMI is claimed
1418	  by the driver, panic is called.
1419
1420config KEMPLD_WDT
1421	tristate "Kontron COM Watchdog Timer"
1422	depends on MFD_KEMPLD
1423	select WATCHDOG_CORE
1424	help
1425	  Support for the PLD watchdog on some Kontron ETX and COMexpress
1426	  (ETXexpress) modules
1427
1428	  This driver can also be built as a module. If so, the module will be
1429	  called kempld_wdt.
1430
1431config SC1200_WDT
1432	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1433	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1434	help
1435	  This is a driver for National Semiconductor PC87307/PC97307 hardware
1436	  watchdog cards as found on the SC1200. This watchdog is mainly used
1437	  for power management purposes and can be used to power down the device
1438	  during inactivity periods (includes interrupt activity monitoring).
1439
1440	  To compile this driver as a module, choose M here: the
1441	  module will be called sc1200wdt.
1442
1443	  Most people will say N.
1444
1445config SCx200_WDT
1446	tristate "National Semiconductor SCx200 Watchdog"
1447	depends on SCx200 && PCI
1448	help
1449	  Enable the built-in watchdog timer support on the National
1450	  Semiconductor SCx200 processors.
1451
1452	  If compiled as a module, it will be called scx200_wdt.
1453
1454config PC87413_WDT
1455	tristate "NS PC87413 watchdog"
1456	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1457	help
1458	  This is the driver for the hardware watchdog on the PC87413 chipset
1459	  This watchdog simply watches your kernel to make sure it doesn't
1460	  freeze, and if it does, it reboots your computer after a certain
1461	  amount of time.
1462
1463	  To compile this driver as a module, choose M here: the
1464	  module will be called pc87413_wdt.
1465
1466	  Most people will say N.
1467
1468config NV_TCO
1469	tristate "nVidia TCO Timer/Watchdog"
1470	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1471	help
1472	  Hardware driver for the TCO timer built into the nVidia Hub family
1473	  (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
1474	  watchdog timer that will reboot the machine after its second
1475	  expiration. The expiration time can be configured with the
1476	  "heartbeat" parameter.
1477
1478	  On some motherboards the driver may fail to reset the chipset's
1479	  NO_REBOOT flag which prevents the watchdog from rebooting the
1480	  machine. If this is the case you will get a kernel message like
1481	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1482
1483	  To compile this driver as a module, choose M here: the
1484	  module will be called nv_tco.
1485
1486config RDC321X_WDT
1487	tristate "RDC R-321x SoC watchdog"
1488	depends on X86_RDC321X || COMPILE_TEST
1489	depends on PCI
1490	help
1491	  This is the driver for the built in hardware watchdog
1492	  in the RDC R-321x SoC.
1493
1494	  To compile this driver as a module, choose M here: the
1495	  module will be called rdc321x_wdt.
1496
1497config 60XX_WDT
1498	tristate "SBC-60XX Watchdog Timer"
1499	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1500	help
1501	  This driver can be used with the watchdog timer found on some
1502	  single board computers, namely the 6010 PII based computer.
1503	  It may well work with other cards.  It reads port 0x443 to enable
1504	  and re-set the watchdog timer, and reads port 0x45 to disable
1505	  the watchdog.  If you have a card that behave in similar ways,
1506	  you can probably make this driver work with your card as well.
1507
1508	  You can compile this driver directly into the kernel, or use
1509	  it as a module.  The module will be called sbc60xxwdt.
1510
1511config SBC8360_WDT
1512	tristate "SBC8360 Watchdog Timer"
1513	depends on X86_32 && HAS_IOPORT
1514	help
1515
1516	  This is the driver for the hardware watchdog on the SBC8360 Single
1517	  Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1518
1519	  To compile this driver as a module, choose M here: the
1520	  module will be called sbc8360.
1521
1522	  Most people will say N.
1523
1524config SBC7240_WDT
1525	tristate "SBC Nano 7240 Watchdog Timer"
1526	depends on X86_32 && HAS_IOPORT
1527	help
1528	  This is the driver for the hardware watchdog found on the IEI
1529	  single board computers EPIC Nano 7240 (and likely others). This
1530	  watchdog simply watches your kernel to make sure it doesn't freeze,
1531	  and if it does, it reboots your computer after a certain amount of
1532	  time.
1533
1534	  To compile this driver as a module, choose M here: the
1535	  module will be called sbc7240_wdt.
1536
1537config CPU5_WDT
1538	tristate "SMA CPU5 Watchdog"
1539	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1540	help
1541	  TBD.
1542	  To compile this driver as a module, choose M here: the
1543	  module will be called cpu5wdt.
1544
1545config SMSC_SCH311X_WDT
1546	tristate "SMSC SCH311X Watchdog Timer"
1547	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1548	help
1549	  This is the driver for the hardware watchdog timer on the
1550	  SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1551	  (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1552	  serial ports).
1553
1554	  To compile this driver as a module, choose M here: the
1555	  module will be called sch311x_wdt.
1556
1557config SMSC37B787_WDT
1558	tristate "Winbond SMsC37B787 Watchdog Timer"
1559	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1560	help
1561	  This is the driver for the hardware watchdog component on the
1562	  Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1563	  from Vision Systems and maybe others.
1564
1565	  This watchdog simply watches your kernel to make sure it doesn't
1566	  freeze, and if it does, it reboots your computer after a certain
1567	  amount of time.
1568
1569	  Usually a userspace daemon will notify the kernel WDT driver that
1570	  userspace is still alive, at regular intervals.
1571
1572	  To compile this driver as a module, choose M here: the
1573	  module will be called smsc37b787_wdt.
1574
1575	  Most people will say N.
1576
1577config TQMX86_WDT
1578	tristate "TQ-Systems TQMX86 Watchdog Timer"
1579	depends on X86 || COMPILE_TEST
1580	select WATCHDOG_CORE
1581	help
1582	  This is the driver for the hardware watchdog timer in the TQMX86 IO
1583	  controller found on some of their ComExpress Modules.
1584
1585	  To compile this driver as a module, choose M here; the module
1586	  will be called tqmx86_wdt.
1587
1588	  Most people will say N.
1589
1590config VIA_WDT
1591	tristate "VIA Watchdog Timer"
1592	depends on (X86 || COMPILE_TEST) && PCI
1593	select WATCHDOG_CORE
1594	help
1595	  This is the driver for the hardware watchdog timer on VIA
1596	  southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1597
1598	  To compile this driver as a module, choose M here; the module
1599	  will be called via_wdt.
1600
1601	  Most people will say N.
1602
1603config W83627HF_WDT
1604	tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1605	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1606	select WATCHDOG_CORE
1607	help
1608	  This is the driver for the hardware watchdog on the following
1609	  Super I/O chips.
1610		W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1611		W83637HF
1612		W83667HG/HG-B
1613		W83687THF
1614		W83697HF
1615		W83697UG
1616		NCT6775
1617		NCT6776
1618		NCT6779
1619		NCT6791
1620		NCT6792
1621		NCT6102D/04D/06D
1622		NCT6116D
1623
1624	  This watchdog simply watches your kernel to make sure it doesn't
1625	  freeze, and if it does, it reboots your computer after a certain
1626	  amount of time.
1627
1628	  To compile this driver as a module, choose M here: the
1629	  module will be called w83627hf_wdt.
1630
1631	  Most people will say N.
1632
1633config W83877F_WDT
1634	tristate "W83877F (EMACS) Watchdog Timer"
1635	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1636	help
1637	  This is the driver for the hardware watchdog on the W83877F chipset
1638	  as used in EMACS PC-104 motherboards (and likely others).  This
1639	  watchdog simply watches your kernel to make sure it doesn't freeze,
1640	  and if it does, it reboots your computer after a certain amount of
1641	  time.
1642
1643	  To compile this driver as a module, choose M here: the
1644	  module will be called w83877f_wdt.
1645
1646	  Most people will say N.
1647
1648config W83977F_WDT
1649	tristate "W83977F (PCM-5335) Watchdog Timer"
1650	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1651	help
1652	  This is the driver for the hardware watchdog on the W83977F I/O chip
1653	  as used in AAEON's PCM-5335 SBC (and likely others).  This
1654	  watchdog simply watches your kernel to make sure it doesn't freeze,
1655	  and if it does, it reboots your computer after a certain amount of
1656	  time.
1657
1658	  To compile this driver as a module, choose M here: the
1659	  module will be called w83977f_wdt.
1660
1661config MACHZ_WDT
1662	tristate "ZF MachZ Watchdog"
1663	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1664	help
1665	  If you are using a ZF Micro MachZ processor, say Y here, otherwise
1666	  N.  This is the driver for the watchdog timer built-in on that
1667	  processor using ZF-Logic interface.  This watchdog simply watches
1668	  your kernel to make sure it doesn't freeze, and if it does, it
1669	  reboots your computer after a certain amount of time.
1670
1671	  To compile this driver as a module, choose M here: the
1672	  module will be called machzwd.
1673
1674config SBC_EPX_C3_WATCHDOG
1675	tristate "Winsystems SBC EPX-C3 watchdog"
1676	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1677	help
1678	  This is the driver for the built-in watchdog timer on the EPX-C3
1679	  Single-board computer made by Winsystems, Inc.
1680
1681	  *Note*: This hardware watchdog is not probeable and thus there
1682	  is no way to know if writing to its IO address will corrupt
1683	  your system or have any real effect.  The only way to be sure
1684	  that this driver does what you want is to make sure you
1685	  are running it on an EPX-C3 from Winsystems with the watchdog
1686	  timer at IO address 0x1ee and 0x1ef.  It will write to both those
1687	  IO ports.  Basically, the assumption is made that if you compile
1688	  this driver into your kernel and/or load it as a module, that you
1689	  know what you are doing and that you are in fact running on an
1690	  EPX-C3 board!
1691
1692	  To compile this driver as a module, choose M here: the
1693	  module will be called sbc_epx_c3.
1694
1695config INTEL_MEI_WDT
1696	tristate "Intel MEI iAMT Watchdog"
1697	depends on INTEL_MEI && X86
1698	select WATCHDOG_CORE
1699	help
1700	  A device driver for the Intel MEI iAMT watchdog.
1701
1702	  The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1703	  Whenever the OS hangs or crashes, iAMT will send an event
1704	  to any subscriber to this event. The watchdog doesn't reset the
1705	  the platform.
1706
1707	  To compile this driver as a module, choose M here:
1708	  the module will be called mei_wdt.
1709
1710config NI903X_WDT
1711	tristate "NI 903x/913x Watchdog"
1712	depends on X86 && ACPI
1713	select WATCHDOG_CORE
1714	help
1715	  This is the driver for the watchdog timer on the National Instruments
1716	  903x/913x real-time controllers.
1717
1718	  To compile this driver as a module, choose M here: the module will be
1719	  called ni903x_wdt.
1720
1721config NIC7018_WDT
1722	tristate "NIC7018 Watchdog"
1723	depends on X86 && ACPI
1724	select WATCHDOG_CORE
1725	help
1726	  Support for National Instruments NIC7018 Watchdog.
1727
1728	  To compile this driver as a module, choose M here: the module will be
1729	  called nic7018_wdt.
1730
1731config SIEMENS_SIMATIC_IPC_WDT
1732	tristate "Siemens Simatic IPC Watchdog"
1733	depends on SIEMENS_SIMATIC_IPC && PCI
1734	default y
1735	select WATCHDOG_CORE
1736	select P2SB if X86
1737	help
1738	  This driver adds support for several watchdogs found in Industrial
1739	  PCs from Siemens.
1740
1741	  To compile this driver as a module, choose M here: the module will be
1742	  called simatic-ipc-wdt.
1743
1744# M68K Architecture
1745
1746config M54xx_WATCHDOG
1747	tristate "MCF54xx watchdog support"
1748	depends on M548x
1749	help
1750	  To compile this driver as a module, choose M here: the
1751	  module will be called m54xx_wdt.
1752
1753# MicroBlaze Architecture
1754
1755# MIPS Architecture
1756
1757config ATH79_WDT
1758	tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1759	depends on ATH79 || (ARM && COMPILE_TEST)
1760	help
1761	  Hardware driver for the built-in watchdog timer on the Atheros
1762	  AR71XX/AR724X/AR913X SoCs.
1763
1764config BCM47XX_WDT
1765	tristate "Broadcom BCM47xx Watchdog Timer"
1766	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1767	select WATCHDOG_CORE
1768	help
1769	  Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1770
1771config RC32434_WDT
1772	tristate "IDT RC32434 SoC Watchdog Timer"
1773	depends on MIKROTIK_RB532
1774	help
1775	  Hardware driver for the IDT RC32434 SoC built-in
1776	  watchdog timer.
1777
1778	  To compile this driver as a module, choose M here: the
1779	  module will be called rc32434_wdt.
1780
1781config INDYDOG
1782	tristate "Indy/I2 Hardware Watchdog"
1783	depends on SGI_HAS_INDYDOG
1784	help
1785	  Hardware driver for the Indy's/I2's watchdog. This is a
1786	  watchdog timer that will reboot the machine after a 60 second
1787	  timer expired and no process has written to /dev/watchdog during
1788	  that time.
1789
1790config JZ4740_WDT
1791	tristate "Ingenic jz4740 SoC hardware watchdog"
1792	depends on MIPS || COMPILE_TEST
1793	depends on COMMON_CLK
1794	select WATCHDOG_CORE
1795	select MFD_SYSCON
1796	help
1797	  Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1798
1799config WDT_MTX1
1800	tristate "MTX-1 Hardware Watchdog"
1801	depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1802	help
1803	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
1804	  will reboot the machine after a 100 seconds timer expired.
1805
1806config SIBYTE_WDOG
1807	tristate "Sibyte SoC hardware watchdog"
1808	depends on CPU_SB1
1809	help
1810	  Watchdog driver for the built in watchdog hardware in Sibyte
1811	  SoC processors.  There are apparently two watchdog timers
1812	  on such processors; this driver supports only the first one,
1813	  because currently Linux only supports exporting one watchdog
1814	  to userspace.
1815
1816	  To compile this driver as a loadable module, choose M here.
1817	  The module will be called sb_wdog.
1818
1819config TXX9_WDT
1820	tristate "Toshiba TXx9 Watchdog Timer"
1821	depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1822	select WATCHDOG_CORE
1823	help
1824	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1825
1826config OCTEON_WDT
1827	tristate "Cavium OCTEON SOC family Watchdog Timer"
1828	depends on CAVIUM_OCTEON_SOC
1829	default y
1830	select WATCHDOG_CORE
1831	select EXPORT_UASM if OCTEON_WDT = m
1832	help
1833	  Hardware driver for OCTEON's on chip watchdog timer.
1834	  Enables the watchdog for all cores running Linux. It
1835	  installs a NMI handler and pokes the watchdog based on an
1836	  interrupt.  On first expiration of the watchdog, the
1837	  interrupt handler pokes it.  The second expiration causes an
1838	  NMI that prints a message. The third expiration causes a
1839	  global soft reset.
1840
1841	  When userspace has /dev/watchdog open, no poking is done
1842	  from the first interrupt, it is then only poked when the
1843	  device is written.
1844
1845config MARVELL_GTI_WDT
1846	tristate "Marvell GTI Watchdog driver"
1847	depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
1848	default y
1849	select WATCHDOG_CORE
1850	help
1851	  Marvell GTI hardware supports watchdog timer. First timeout
1852	  works as watchdog pretimeout and installed interrupt handler
1853	  will be called on first timeout. Hardware can generate interrupt
1854	  to SCP on second timeout but it is not enabled, so second
1855	  timeout is ignored. If device poke does not happen then system
1856	  will reboot on third timeout.
1857
1858config BCM2835_WDT
1859	tristate "Broadcom BCM2835 hardware watchdog"
1860	depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1861	select WATCHDOG_CORE
1862	help
1863	  Watchdog driver for the built in watchdog hardware in Broadcom
1864	  BCM2835 SoC.
1865
1866	  To compile this driver as a loadable module, choose M here.
1867	  The module will be called bcm2835_wdt.
1868
1869config BCM_KONA_WDT
1870	tristate "BCM Kona Watchdog"
1871	depends on ARCH_BCM_MOBILE || COMPILE_TEST
1872	select WATCHDOG_CORE
1873	help
1874	  Support for the watchdog timer on the following Broadcom BCM281xx
1875	  family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1876	  BCM28155 variants.
1877
1878	  Say 'Y' or 'M' here to enable the driver. The module will be called
1879	  bcm_kona_wdt.
1880
1881config BCM_KONA_WDT_DEBUG
1882	bool "DEBUGFS support for BCM Kona Watchdog"
1883	depends on BCM_KONA_WDT || COMPILE_TEST
1884	help
1885	  If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1886	  access to the driver's internal data structures as well as watchdog
1887	  timer hardware registres.
1888
1889	  If in doubt, say 'N'.
1890
1891config BCM7038_WDT
1892	tristate "BCM63xx/BCM7038 Watchdog"
1893	select WATCHDOG_CORE
1894	depends on HAS_IOMEM
1895	depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1896	help
1897	  Watchdog driver for the built-in hardware in Broadcom 7038 and
1898	  later SoCs used in set-top boxes.  BCM7038 was made public
1899	  during the 2004 CES, and since then, many Broadcom chips use this
1900	  watchdog block, including some cable modem chips and DSL (63xx)
1901	  chips.
1902
1903config IMGPDC_WDT
1904	tristate "Imagination Technologies PDC Watchdog Timer"
1905	depends on HAS_IOMEM
1906	depends on MIPS || COMPILE_TEST
1907	select WATCHDOG_CORE
1908	help
1909	  Driver for Imagination Technologies PowerDown Controller
1910	  Watchdog Timer.
1911
1912	  To compile this driver as a loadable module, choose M here.
1913	  The module will be called imgpdc_wdt.
1914
1915config LANTIQ_WDT
1916	tristate "Lantiq SoC watchdog"
1917	depends on LANTIQ
1918	select WATCHDOG_CORE
1919	help
1920	  Hardware driver for the Lantiq SoC Watchdog Timer.
1921
1922config LOONGSON1_WDT
1923	tristate "Loongson1 SoC hardware watchdog"
1924	depends on MACH_LOONGSON32 || COMPILE_TEST
1925	select WATCHDOG_CORE
1926	help
1927	  Hardware driver for the Loongson1 SoC Watchdog Timer.
1928
1929config RALINK_WDT
1930	tristate "Ralink SoC watchdog"
1931	select WATCHDOG_CORE
1932	depends on RALINK
1933	help
1934	  Hardware driver for the Ralink SoC Watchdog Timer.
1935
1936config GXP_WATCHDOG
1937	tristate "HPE GXP watchdog support"
1938	depends on ARCH_HPE_GXP || COMPILE_TEST
1939	select WATCHDOG_CORE
1940	help
1941	  Say Y here to include support for the watchdog timer
1942	  in HPE GXP SoCs.
1943
1944	  To compile this driver as a module, choose M here.
1945	  The module will be called gxp-wdt.
1946
1947config MT7621_WDT
1948	tristate "Mediatek SoC watchdog"
1949	select WATCHDOG_CORE
1950	select REGMAP_MMIO
1951	select MFD_SYSCON
1952	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1953	help
1954	  Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1955
1956config PIC32_WDT
1957	tristate "Microchip PIC32 hardware watchdog"
1958	select WATCHDOG_CORE
1959	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1960	help
1961	  Watchdog driver for the built in watchdog hardware in a PIC32.
1962
1963	  Configuration bits must be set appropriately for the watchdog to be
1964	  controlled by this driver.
1965
1966	  To compile this driver as a loadable module, choose M here.
1967	  The module will be called pic32-wdt.
1968
1969config PIC32_DMT
1970	tristate "Microchip PIC32 Deadman Timer"
1971	select WATCHDOG_CORE
1972	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1973	help
1974	  Watchdog driver for PIC32 instruction fetch counting timer. This
1975	  specific timer is typically be used in mission critical and safety
1976	  critical applications, where any single failure of the software
1977	  functionality and sequencing must be detected.
1978
1979	  To compile this driver as a loadable module, choose M here.
1980	  The module will be called pic32-dmt.
1981
1982# PARISC Architecture
1983
1984# POWERPC Architecture
1985
1986config GEF_WDT
1987	tristate "GE Watchdog Timer"
1988	depends on GE_FPGA
1989	help
1990	  Watchdog timer found in a number of GE single board computers.
1991
1992config MPC5200_WDT
1993	bool "MPC52xx Watchdog Timer"
1994	depends on PPC_MPC52xx || COMPILE_TEST
1995	help
1996	  Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1997
1998config 8xxx_WDT
1999	tristate "MPC8xxx Platform Watchdog Timer"
2000	depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
2001	select WATCHDOG_CORE
2002	help
2003	  This driver is for a SoC level watchdog that exists on some
2004	  Freescale PowerPC processors. So far this driver supports:
2005	  - MPC8xx watchdogs
2006	  - MPC83xx watchdogs
2007	  - MPC86xx watchdogs
2008
2009	  For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
2010
2011config PIKA_WDT
2012	tristate "PIKA FPGA Watchdog"
2013	depends on WARP || (PPC64 && COMPILE_TEST)
2014	default y
2015	help
2016	  This enables the watchdog in the PIKA FPGA. Currently used on
2017	  the Warp platform.
2018
2019config BOOKE_WDT
2020	tristate "PowerPC Book-E Watchdog Timer"
2021	depends on BOOKE || 4xx
2022	select WATCHDOG_CORE
2023	help
2024	  Watchdog driver for PowerPC Book-E chips, such as the Freescale
2025	  MPC85xx SOCs and the IBM PowerPC 440.
2026
2027	  Please see Documentation/watchdog/watchdog-api.rst for
2028	  more information.
2029
2030config BOOKE_WDT_DEFAULT_TIMEOUT
2031	int "PowerPC Book-E Watchdog Timer Default Timeout"
2032	depends on BOOKE_WDT
2033	default 38 if PPC_E500
2034	range 0 63 if PPC_E500
2035	default 3 if !PPC_E500
2036	range 0 3 if !PPC_E500
2037	help
2038	  Select the default watchdog timer period to be used by the PowerPC
2039	  Book-E watchdog driver.  A watchdog "event" occurs when the bit
2040	  position represented by this number transitions from zero to one.
2041
2042	  For Freescale Book-E processors, this is a number between 0 and 63.
2043	  For other Book-E processors, this is a number between 0 and 3.
2044
2045	  The value can be overridden by the wdt_period command-line parameter.
2046
2047config MEN_A21_WDT
2048	tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
2049	select WATCHDOG_CORE
2050	depends on GPIOLIB || COMPILE_TEST
2051	help
2052	  Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
2053
2054	  The driver can also be built as a module. If so, the module will be
2055	  called mena21_wdt.
2056
2057	  If unsure select N here.
2058
2059# PPC64 Architecture
2060
2061config PSERIES_WDT
2062	tristate "POWER Architecture Platform Watchdog Timer"
2063	depends on PPC_PSERIES
2064	select WATCHDOG_CORE
2065	help
2066	  Driver for virtual watchdog timers provided by PAPR
2067	  hypervisors (e.g. PowerVM, KVM).
2068
2069config WATCHDOG_RTAS
2070	tristate "RTAS watchdog"
2071	depends on PPC_RTAS
2072	help
2073	  This driver adds watchdog support for the RTAS watchdog.
2074
2075	  To compile this driver as a module, choose M here. The module
2076	  will be called wdrtas.
2077
2078# RISC-V Architecture
2079
2080config STARFIVE_WATCHDOG
2081	tristate "StarFive Watchdog support"
2082	depends on ARCH_STARFIVE || COMPILE_TEST
2083	select WATCHDOG_CORE
2084	default ARCH_STARFIVE
2085	help
2086	  Say Y here to support the watchdog of StarFive JH7100 and JH7110
2087	  SoC. This driver can also be built as a module if choose M.
2088
2089# S390 Architecture
2090
2091config DIAG288_WATCHDOG
2092	tristate "System z diag288 Watchdog"
2093	depends on S390
2094	select WATCHDOG_CORE
2095	help
2096	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
2097	  provide a virtual watchdog timer to their guest that cause a
2098	  user define Control Program command to be executed after a
2099	  timeout.
2100	  LPAR provides a very similar interface. This driver handles
2101	  both.
2102
2103	  To compile this driver as a module, choose M here. The module
2104	  will be called diag288_wdt.
2105
2106# SUPERH (sh + sh64) Architecture
2107
2108config SH_WDT
2109	tristate "SuperH Watchdog"
2110	depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2111	select WATCHDOG_CORE
2112	help
2113	  This driver adds watchdog support for the integrated watchdog in the
2114	  SuperH processors. If you have one of these processors and wish
2115	  to have watchdog support enabled, say Y, otherwise say N.
2116
2117	  As a side note, saying Y here will automatically boost HZ to 1000
2118	  so that the timer has a chance to clear the overflow counter. On
2119	  slower systems (such as the SH-2 and SH-3) this will likely yield
2120	  some performance issues. As such, the WDT should be avoided here
2121	  unless it is absolutely necessary.
2122
2123	  To compile this driver as a module, choose M here: the
2124	  module will be called shwdt.
2125
2126# SPARC Architecture
2127
2128# SPARC64 Architecture
2129
2130config WATCHDOG_CP1XXX
2131	tristate "CP1XXX Hardware Watchdog support"
2132	depends on SPARC64 && PCI
2133	help
2134	  This is the driver for the hardware watchdog timers present on
2135	  Sun Microsystems CompactPCI models CP1400 and CP1500.
2136
2137	  To compile this driver as a module, choose M here: the
2138	  module will be called cpwatchdog.
2139
2140	  If you do not have a CompactPCI model CP1400 or CP1500, or
2141	  another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2142	  you should say N to this option.
2143
2144config WATCHDOG_RIO
2145	tristate "RIO Hardware Watchdog support"
2146	depends on SPARC64 && PCI
2147	help
2148	  Say Y here to support the hardware watchdog capability on Sun RIO
2149	  machines.  The watchdog timeout period is normally one minute but
2150	  can be changed with a boot-time parameter.
2151
2152config WATCHDOG_SUN4V
2153	tristate "Sun4v Watchdog support"
2154	select WATCHDOG_CORE
2155	depends on SPARC64
2156	help
2157	  Say Y here to support the hypervisor watchdog capability embedded
2158	  in the SPARC sun4v architecture.
2159
2160	  To compile this driver as a module, choose M here. The module will
2161	  be called sun4v_wdt.
2162
2163# XTENSA Architecture
2164
2165# Xen Architecture
2166
2167config XEN_WDT
2168	tristate "Xen Watchdog support"
2169	depends on XEN
2170	select WATCHDOG_CORE
2171	help
2172	  Say Y here to support the hypervisor watchdog capability provided
2173	  by Xen 4.0 and newer.  The watchdog timeout period is normally one
2174	  minute but can be changed with a boot-time parameter.
2175
2176config UML_WATCHDOG
2177	tristate "UML watchdog"
2178	depends on UML || COMPILE_TEST
2179
2180#
2181# ISA-based Watchdog Cards
2182#
2183
2184comment "ISA-based Watchdog Cards"
2185	depends on ISA
2186
2187config PCWATCHDOG
2188	tristate "Berkshire Products ISA-PC Watchdog"
2189	depends on ISA
2190	help
2191	  This is the driver for the Berkshire Products ISA-PC Watchdog card.
2192	  This card simply watches your kernel to make sure it doesn't freeze,
2193	  and if it does, it reboots your computer after a certain amount of
2194	  time. This driver is like the WDT501 driver but for different
2195	  hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2196	  The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2197
2198	  To compile this driver as a module, choose M here: the
2199	  module will be called pcwd.
2200
2201	  Most people will say N.
2202
2203config MIXCOMWD
2204	tristate "Mixcom Watchdog"
2205	depends on ISA
2206	help
2207	  This is a driver for the Mixcom hardware watchdog cards.  This
2208	  watchdog simply watches your kernel to make sure it doesn't freeze,
2209	  and if it does, it reboots your computer after a certain amount of
2210	  time.
2211
2212	  To compile this driver as a module, choose M here: the
2213	  module will be called mixcomwd.
2214
2215	  Most people will say N.
2216
2217config WDT
2218	tristate "WDT Watchdog timer"
2219	depends on ISA
2220	help
2221	  If you have a WDT500P or WDT501P watchdog board, say Y here,
2222	  otherwise N. It is not possible to probe for this board, which means
2223	  that you have to inform the kernel about the IO port and IRQ that
2224	  is needed (you can do this via the io and irq parameters)
2225
2226	  To compile this driver as a module, choose M here: the
2227	  module will be called wdt.
2228
2229#
2230# PCI-based Watchdog Cards
2231#
2232
2233comment "PCI-based Watchdog Cards"
2234	depends on PCI
2235
2236config PCIPCWATCHDOG
2237	tristate "Berkshire Products PCI-PC Watchdog"
2238	depends on PCI && HAS_IOPORT
2239	help
2240	  This is the driver for the Berkshire Products PCI-PC Watchdog card.
2241	  This card simply watches your kernel to make sure it doesn't freeze,
2242	  and if it does, it reboots your computer after a certain amount of
2243	  time. The card can also monitor the internal temperature of the PC.
2244	  More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2245
2246	  To compile this driver as a module, choose M here: the
2247	  module will be called pcwd_pci.
2248
2249	  Most people will say N.
2250
2251config WDTPCI
2252	tristate "PCI-WDT500/501 Watchdog timer"
2253	depends on PCI && HAS_IOPORT
2254	help
2255	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2256
2257	  If you have a PCI-WDT501 watchdog board then you can enable the
2258	  temperature sensor by setting the type parameter to 501.
2259
2260	  If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2261	  can do this via the tachometer parameter. Only do this if you have a
2262	  fan tachometer actually set up.
2263
2264	  To compile this driver as a module, choose M here: the
2265	  module will be called wdt_pci.
2266
2267#
2268# USB-based Watchdog Cards
2269#
2270
2271comment "USB-based Watchdog Cards"
2272	depends on USB
2273
2274config USBPCWATCHDOG
2275	tristate "Berkshire Products USB-PC Watchdog"
2276	depends on USB
2277	help
2278	  This is the driver for the Berkshire Products USB-PC Watchdog card.
2279	  This card simply watches your kernel to make sure it doesn't freeze,
2280	  and if it does, it reboots your computer after a certain amount of
2281	  time. The card can also monitor the internal temperature of the PC.
2282	  More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2283
2284	  To compile this driver as a module, choose M here: the
2285	  module will be called pcwd_usb.
2286
2287	  Most people will say N.
2288
2289config KEEMBAY_WATCHDOG
2290	tristate "Intel Keem Bay SoC non-secure watchdog"
2291	depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2292	select WATCHDOG_CORE
2293	help
2294	  This option enable support for an In-secure watchdog timer driver for
2295	  Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2296	  count unit. An interrupt will be triggered, when the count crosses
2297	  the threshold configured in the register.
2298
2299	  To compile this driver as a module, choose M here: the
2300	  module will be called keembay_wdt.
2301
2302endif # WATCHDOG
2303