Merge tag 'pci-v6.16-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
[linux-block.git] / drivers / watchdog / Kconfig
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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 LENOVO_SE30_WDT
283 tristate "Lenovo SE30 Watchdog"
284 depends on (X86 && DMI) || COMPILE_TEST
285 depends on HAS_IOPORT
286 select WATCHDOG_CORE
287 help
288 If you say yes here you get support for the watchdog
289 functionality for the Lenovo SE30 platform.
290
291 This driver can also be built as a module. If so, the module
292 will be called lenovo-se30-wdt.
293
294config MENF21BMC_WATCHDOG
295 tristate "MEN 14F021P00 BMC Watchdog"
296 depends on MFD_MENF21BMC || COMPILE_TEST
297 depends on I2C
298 select WATCHDOG_CORE
299 help
300 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
301
302 This driver can also be built as a module. If so the module
303 will be called menf21bmc_wdt.
304
305config MENZ069_WATCHDOG
306 tristate "MEN 16Z069 Watchdog"
307 depends on MCB
308 select WATCHDOG_CORE
309 help
310 Say Y here to include support for the MEN 16Z069 Watchdog.
311
312 This driver can also be built as a module. If so the module
313 will be called menz069_wdt.
314
315config WDAT_WDT
316 tristate "ACPI Watchdog Action Table (WDAT)"
317 depends on ACPI
318 select WATCHDOG_CORE
319 select ACPI_WATCHDOG
320 help
321 This driver adds support for systems with ACPI Watchdog Action
322 Table (WDAT) table. Servers typically have this but it can be
323 found on some desktop machines as well. This driver will take
324 over the native iTCO watchdog driver found on many Intel CPUs.
325
326 To compile this driver as module, choose M here: the module will
327 be called wdat_wdt.
328
329config WM831X_WATCHDOG
330 tristate "WM831x watchdog"
331 depends on MFD_WM831X
332 select WATCHDOG_CORE
333 help
334 Support for the watchdog in the WM831x AudioPlus PMICs. When
335 the watchdog triggers the system will be reset.
336
337config WM8350_WATCHDOG
338 tristate "WM8350 watchdog"
339 depends on MFD_WM8350
340 select WATCHDOG_CORE
341 help
342 Support for the watchdog in the WM8350 AudioPlus PMIC. When
343 the watchdog triggers the system will be reset.
344
345config XILINX_WATCHDOG
346 tristate "Xilinx Watchdog timer"
347 depends on HAS_IOMEM
348 select WATCHDOG_CORE
349 help
350 Watchdog driver for the xps_timebase_wdt IP core.
351
352 To compile this driver as a module, choose M here: the
353 module will be called of_xilinx_wdt.
354
355config XILINX_WINDOW_WATCHDOG
356 tristate "Xilinx window watchdog timer"
357 depends on HAS_IOMEM
358 depends on ARM64 || COMPILE_TEST
359 select WATCHDOG_CORE
360 help
361 Window watchdog driver for the versal_wwdt IP core.
362 Window watchdog timer(WWDT) contains closed(first) and
363 open(second) window with 32 bit width. Write to the watchdog
364 timer within predefined window periods of time. This means
365 a period that is not too soon and a period that is not too
366 late. The WWDT has to be restarted within the open window time.
367 If software tries to restart WWDT outside of the open window
368 time period, it generates a reset.
369
370 To compile this driver as a module, choose M here: the
371 module will be called xilinx_wwdt.
372
373config ZIIRAVE_WATCHDOG
374 tristate "Zodiac RAVE Watchdog Timer"
375 depends on I2C
376 select WATCHDOG_CORE
377 help
378 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
379 Processor.
380
381 To compile this driver as a module, choose M here: the
382 module will be called ziirave_wdt.
383
384config RAVE_SP_WATCHDOG
385 tristate "RAVE SP Watchdog timer"
386 depends on RAVE_SP_CORE
387 depends on NVMEM || !NVMEM
388 select WATCHDOG_CORE
389 help
390 Support for the watchdog on RAVE SP device.
391
392config MLX_WDT
393 tristate "Mellanox Watchdog"
394 depends on MELLANOX_PLATFORM || COMPILE_TEST
395 select WATCHDOG_CORE
396 select REGMAP
397 help
398 This is the driver for the hardware watchdog on Mellanox systems.
399 If you are going to use it, say Y here, otherwise N.
400 This driver can be used together with the watchdog daemon.
401 It can also watch your kernel to make sure it doesn't freeze,
402 and if it does, it reboots your system after a certain amount of
403 time.
404
405 To compile this driver as a module, choose M here: the
406 module will be called mlx-wdt.
407
408config SL28CPLD_WATCHDOG
409 tristate "Kontron sl28cpld Watchdog"
410 depends on MFD_SL28CPLD || COMPILE_TEST
411 select WATCHDOG_CORE
412 help
413 Say Y here to include support for the watchdog timer
414 on the Kontron sl28 CPLD.
415
416 To compile this driver as a module, choose M here: the
417 module will be called sl28cpld_wdt.
418
419# ALPHA Architecture
420
421# ARM Architecture
422
423config AIROHA_WATCHDOG
424 tristate "Airoha EN7581 Watchdog"
425 depends on ARCH_AIROHA || COMPILE_TEST
426 select WATCHDOG_CORE
427 help
428 Watchdog timer embedded into Airoha SoC. This will reboot your
429 system when the timeout is reached.
430
431config ARM_SP805_WATCHDOG
432 tristate "ARM SP805 Watchdog"
433 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
434 select WATCHDOG_CORE
435 help
436 ARM Primecell SP805 Watchdog timer. This will reboot your system when
437 the timeout is reached.
438
439config ARM_SBSA_WATCHDOG
440 tristate "ARM SBSA Generic Watchdog"
441 depends on ARM64
442 depends on ARM_ARCH_TIMER
443 select WATCHDOG_CORE
444 help
445 ARM SBSA Generic Watchdog has two stage timeouts:
446 the first signal (WS0) is for alerting the system by interrupt,
447 the second one (WS1) is a real hardware reset.
448 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
449
450 This driver can operate ARM SBSA Generic Watchdog as a single stage
451 or a two stages watchdog, it depends on the module parameter "action".
452
453 Note: the maximum timeout in the two stages mode is half of that in
454 the single stage mode.
455
456 To compile this driver as module, choose M here: The module
457 will be called sbsa_gwdt.
458
459config ARMADA_37XX_WATCHDOG
460 tristate "Armada 37xx watchdog"
461 depends on ARCH_MVEBU || COMPILE_TEST
462 depends on HAS_IOMEM
463 select MFD_SYSCON
464 select WATCHDOG_CORE
465 help
466 Say Y here to include support for the watchdog timer found on
467 Marvell Armada 37xx SoCs.
468 To compile this driver as a module, choose M here: the
469 module will be called armada_37xx_wdt.
470
471config ASM9260_WATCHDOG
472 tristate "Alphascale ASM9260 watchdog"
473 depends on MACH_ASM9260 || COMPILE_TEST
474 depends on OF
475 select WATCHDOG_CORE
476 select RESET_CONTROLLER
477 help
478 Watchdog timer embedded into Alphascale asm9260 chips. This will
479 reboot your system when the timeout is reached.
480
481config AT91RM9200_WATCHDOG
482 tristate "AT91RM9200 watchdog"
483 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
484 help
485 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
486 system when the timeout is reached.
487
488config AT91SAM9X_WATCHDOG
489 tristate "AT91SAM9X / AT91CAP9 watchdog"
490 depends on ARCH_AT91 || COMPILE_TEST
491 select WATCHDOG_CORE
492 help
493 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
494 reboot your system when the timeout is reached.
495
496config SAMA5D4_WATCHDOG
497 tristate "Atmel SAMA5D4 Watchdog Timer"
498 depends on ARCH_AT91 || COMPILE_TEST
499 select WATCHDOG_CORE
500 help
501 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
502 Its Watchdog Timer Mode Register can be written more than once.
503 This will reboot your system when the timeout is reached.
504
505config CADENCE_WATCHDOG
506 tristate "Cadence Watchdog Timer"
507 depends on HAS_IOMEM
508 select WATCHDOG_CORE
509 help
510 Say Y here if you want to include support for the watchdog
511 timer in the Xilinx Zynq.
512
513config 21285_WATCHDOG
514 tristate "DC21285 watchdog"
515 depends on FOOTBRIDGE
516 help
517 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
518 here if you wish to use this. Alternatively say M to compile the
519 driver as a module, which will be called wdt285.
520
521 This driver does not work on all machines. In particular, early CATS
522 boards have hardware problems that will cause the machine to simply
523 lock up if the watchdog fires.
524
525 "If in doubt, leave it out" - say N.
526
527config 977_WATCHDOG
528 tristate "NetWinder WB83C977 watchdog"
529 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
530 depends on HAS_IOPORT
531 help
532 Say Y here to include support for the WB977 watchdog included in
533 NetWinder machines. Alternatively say M to compile the driver as
534 a module, which will be called wdt977.
535
536 Not sure? It's safe to say N.
537
538config FTWDT010_WATCHDOG
539 tristate "Faraday Technology FTWDT010 watchdog"
540 depends on ARM || COMPILE_TEST
541 select WATCHDOG_CORE
542 default ARCH_GEMINI
543 help
544 Say Y here if to include support for the Faraday Technology
545 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
546 family of devices.
547
548 To compile this driver as a module, choose M here: the
549 module will be called ftwdt010_wdt.
550
551config IXP4XX_WATCHDOG
552 tristate "IXP4xx Watchdog"
553 depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
554 select WATCHDOG_CORE
555 help
556 Say Y here if to include support for the watchdog timer
557 in the Intel IXP4xx network processors. This driver can
558 be built as a module by choosing M. The module will
559 be called ixp4xx_wdt.
560
561 Note: The internal IXP4xx watchdog does a soft CPU reset
562 which doesn't reset any peripherals. There are circumstances
563 where the watchdog will fail to reset the board correctly
564 (e.g., if the boot ROM is in an unreadable state).
565
566 Say N if you are unsure.
567
568config S3C2410_WATCHDOG
569 tristate "S3C6410/S5Pv210/Exynos Watchdog"
570 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
571 select WATCHDOG_CORE
572 select MFD_SYSCON if ARCH_EXYNOS
573 help
574 Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
575 SoCs. This will reboot the system when the timer expires with
576 the watchdog enabled.
577
578 The driver is limited by the speed of the system's PCLK
579 signal, so with reasonably fast systems (PCLK around 50-66MHz)
580 then watchdog intervals of over approximately 20seconds are
581 unavailable.
582
583 Choose Y/M here only if you build for such Samsung SoC.
584 The driver can be built as a module by choosing M, and will
585 be called s3c2410_wdt.
586
587config SA1100_WATCHDOG
588 tristate "SA1100/PXA2xx watchdog"
589 depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
590 help
591 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
592 reboot your system when timeout is reached.
593
594 NOTE: once enabled, this timer cannot be disabled.
595
596 To compile this driver as a module, choose M here: the
597 module will be called sa1100_wdt.
598
599config DW_WATCHDOG
600 tristate "Synopsys DesignWare watchdog"
601 depends on HAS_IOMEM
602 select WATCHDOG_CORE
603 help
604 Say Y here if to include support for the Synopsys DesignWare
605 watchdog timer found in many chips.
606 To compile this driver as a module, choose M here: the
607 module will be called dw_wdt.
608
609config EP93XX_WATCHDOG
610 tristate "EP93xx Watchdog"
611 depends on ARCH_EP93XX || COMPILE_TEST
612 select WATCHDOG_CORE
613 help
614 Say Y here if to include support for the watchdog timer
615 embedded in the Cirrus Logic EP93xx family of devices.
616
617 To compile this driver as a module, choose M here: the
618 module will be called ep93xx_wdt.
619
620config OMAP_WATCHDOG
621 tristate "OMAP Watchdog"
622 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
623 select WATCHDOG_CORE
624 help
625 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
626 Say 'Y' here to enable the
627 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
628
629config PNX4008_WATCHDOG
630 tristate "LPC32XX Watchdog"
631 depends on ARCH_LPC32XX || COMPILE_TEST
632 select WATCHDOG_CORE
633 help
634 Say Y here if to include support for the watchdog timer
635 in the LPC32XX processor.
636 This driver can be built as a module by choosing M. The module
637 will be called pnx4008_wdt.
638
639 Say N if you are unsure.
640
641config DAVINCI_WATCHDOG
642 tristate "DaVinci watchdog"
643 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
644 select WATCHDOG_CORE
645 help
646 Say Y here if to include support for the watchdog timer
647 in the DaVinci DM644x/DM646x or Keystone processors.
648 To compile this driver as a module, choose M here: the
649 module will be called davinci_wdt.
650
651 NOTE: once enabled, this timer cannot be disabled.
652 Say N if you are unsure.
653
654config K3_RTI_WATCHDOG
655 tristate "Texas Instruments K3 RTI watchdog"
656 depends on ARCH_K3 || COMPILE_TEST
657 select WATCHDOG_CORE
658 help
659 Say Y here if you want to include support for the K3 watchdog
660 timer (RTI module) available in the K3 generation of processors.
661
662config ORION_WATCHDOG
663 tristate "Orion watchdog"
664 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
665 depends on ARM
666 select WATCHDOG_CORE
667 help
668 Say Y here if to include support for the watchdog timer
669 in the Marvell Orion5x and Kirkwood ARM SoCs.
670 To compile this driver as a module, choose M here: the
671 module will be called orion_wdt.
672
673config RN5T618_WATCHDOG
674 tristate "Ricoh RN5T618 watchdog"
675 depends on MFD_RN5T618 || COMPILE_TEST
676 select WATCHDOG_CORE
677 help
678 If you say yes here you get support for watchdog on the Ricoh
679 RN5T618 PMIC.
680
681 This driver can also be built as a module. If so, the module
682 will be called rn5t618_wdt.
683
684config SUNXI_WATCHDOG
685 tristate "Allwinner SoCs watchdog support"
686 depends on ARCH_SUNXI || COMPILE_TEST
687 select WATCHDOG_CORE
688 help
689 Say Y here to include support for the watchdog timer
690 in Allwinner SoCs.
691 To compile this driver as a module, choose M here: the
692 module will be called sunxi_wdt.
693
694config NPCM7XX_WATCHDOG
695 tristate "Nuvoton NPCM750 watchdog"
696 depends on ARCH_NPCM || COMPILE_TEST
697 default y if ARCH_NPCM7XX
698 select WATCHDOG_CORE
699 help
700 Say Y here to include Watchdog timer support for the
701 watchdog embedded into the NPCM7xx.
702 This watchdog is used to reset the system and thus cannot be
703 compiled as a module.
704
705config TWL4030_WATCHDOG
706 tristate "TWL4030 Watchdog"
707 depends on TWL4030_CORE
708 select WATCHDOG_CORE
709 help
710 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
711 watchdog timer support for TWL4030 chips.
712
713config STMP3XXX_RTC_WATCHDOG
714 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
715 depends on RTC_DRV_STMP || COMPILE_TEST
716 select WATCHDOG_CORE
717 help
718 Say Y here to include support for the watchdog timer inside
719 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
720 To compile this driver as a module, choose M here: the
721 module will be called stmp3xxx_rtc_wdt.
722
723config TS4800_WATCHDOG
724 tristate "TS-4800 Watchdog"
725 depends on HAS_IOMEM && OF
726 depends on SOC_IMX51 || COMPILE_TEST
727 select WATCHDOG_CORE
728 select MFD_SYSCON
729 help
730 Technologic Systems TS-4800 has watchdog timer implemented in
731 an external FPGA. Say Y here if you want to support for the
732 watchdog timer on TS-4800 board.
733
734config TS72XX_WATCHDOG
735 tristate "TS-72XX SBC Watchdog"
736 depends on MACH_TS72XX || COMPILE_TEST
737 select WATCHDOG_CORE
738 help
739 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
740 watchdog timer implemented in a external CPLD chip. Say Y here
741 if you want to support for the watchdog timer on TS-72XX boards.
742
743 To compile this driver as a module, choose M here: the
744 module will be called ts72xx_wdt.
745
746config MAX63XX_WATCHDOG
747 tristate "Max63xx watchdog"
748 depends on HAS_IOMEM
749 select WATCHDOG_CORE
750 help
751 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
752
753config MAX77620_WATCHDOG
754 tristate "Maxim Max77620 Watchdog Timer"
755 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
756 select WATCHDOG_CORE
757 help
758 This is the driver for the Max77620 watchdog timer.
759 Say 'Y' here to enable the watchdog timer support for
760 MAX77620 chips. To compile this driver as a module,
761 choose M here: the module will be called max77620_wdt.
762
763config IMX2_WDT
764 tristate "IMX2+ Watchdog"
765 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
766 select REGMAP_MMIO
767 select WATCHDOG_CORE
768 help
769 This is the driver for the hardware watchdog
770 on the Freescale IMX2 and later processors.
771 If you have one of these processors and wish to have
772 watchdog support enabled, say Y, otherwise say N.
773
774 To compile this driver as a module, choose M here: the
775 module will be called imx2_wdt.
776
777config IMX_SC_WDT
778 tristate "IMX SC Watchdog"
779 depends on HAVE_ARM_SMCCC
780 depends on IMX_SCU || COMPILE_TEST
781 select WATCHDOG_CORE
782 help
783 This is the driver for the system controller watchdog
784 on the NXP i.MX SoCs with system controller inside, the
785 watchdog driver will call ARM SMC API and trap into
786 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
787 will request system controller to execute the operations.
788 If you have one of these processors and wish to have
789 watchdog support enabled, say Y, otherwise say N.
790
791 To compile this driver as a module, choose M here: the
792 module will be called imx_sc_wdt.
793
794config IMX7ULP_WDT
795 tristate "IMX7ULP Watchdog"
796 depends on ARCH_MXC || COMPILE_TEST
797 select WATCHDOG_CORE
798 help
799 This is the driver for the hardware watchdog on the Freescale
800 IMX7ULP and later processors. If you have one of these
801 processors and wish to have watchdog support enabled,
802 say Y, otherwise say N.
803
804 To compile this driver as a module, choose M here: the
805 module will be called imx7ulp_wdt.
806
807config S32G_WDT
808 tristate "S32G Watchdog"
809 depends on ARCH_S32 || COMPILE_TEST
810 select WATCHDOG_CORE
811 help
812 This is the driver for the hardware watchdog on the NXP
813 S32G platforms. If you wish to have watchdog support
814 enabled, say Y, otherwise say N.
815
816config DB500_WATCHDOG
817 tristate "ST-Ericsson DB800 watchdog"
818 depends on MFD_DB8500_PRCMU
819 select WATCHDOG_CORE
820 default y
821 help
822 Say Y here to include Watchdog timer support for the watchdog
823 existing in the prcmu of ST-Ericsson DB8500 platform.
824
825 To compile this driver as a module, choose M here: the
826 module will be called db500_wdt.
827
828config RETU_WATCHDOG
829 tristate "Retu watchdog"
830 depends on MFD_RETU
831 select WATCHDOG_CORE
832 help
833 Retu watchdog driver for Nokia Internet Tablets (770, N800,
834 N810). At least on N800 the watchdog cannot be disabled, so
835 this driver is essential and you should enable it.
836
837 To compile this driver as a module, choose M here: the
838 module will be called retu_wdt.
839
840config MOXART_WDT
841 tristate "MOXART watchdog"
842 depends on ARCH_MOXART || COMPILE_TEST
843 help
844 Say Y here to include Watchdog timer support for the watchdog
845 existing on the MOXA ART SoC series platforms.
846
847 To compile this driver as a module, choose M here: the
848 module will be called moxart_wdt.
849
850config ST_LPC_WATCHDOG
851 tristate "STMicroelectronics LPC Watchdog"
852 depends on ARCH_STI || COMPILE_TEST
853 depends on OF
854 select WATCHDOG_CORE
855 help
856 Say Y here to include STMicroelectronics Low Power Controller
857 (LPC) based Watchdog timer support.
858
859 To compile this driver as a module, choose M here: the
860 module will be called st_lpc_wdt.
861
862config TEGRA_WATCHDOG
863 tristate "Tegra watchdog"
864 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
865 select WATCHDOG_CORE
866 help
867 Say Y here to include support for the watchdog timer
868 embedded in NVIDIA Tegra SoCs.
869
870 To compile this driver as a module, choose M here: the
871 module will be called tegra_wdt.
872
873config QCOM_WDT
874 tristate "QCOM watchdog"
875 depends on HAS_IOMEM
876 depends on ARCH_QCOM || COMPILE_TEST
877 select WATCHDOG_CORE
878 help
879 Say Y here to include Watchdog timer support for the watchdog found
880 on QCOM chipsets. Currently supported targets are the MSM8960,
881 APQ8064, and IPQ8064.
882
883 To compile this driver as a module, choose M here: the
884 module will be called qcom_wdt.
885
886config MESON_GXBB_WATCHDOG
887 tristate "Amlogic Meson GXBB SoCs watchdog support"
888 depends on ARCH_MESON || COMPILE_TEST
889 select WATCHDOG_CORE
890 help
891 Say Y here to include support for the watchdog timer
892 in Amlogic Meson GXBB SoCs.
893 To compile this driver as a module, choose M here: the
894 module will be called meson_gxbb_wdt.
895
896config MESON_WATCHDOG
897 tristate "Amlogic Meson SoCs watchdog support"
898 depends on ARCH_MESON || COMPILE_TEST
899 select WATCHDOG_CORE
900 help
901 Say Y here to include support for the watchdog timer
902 in Amlogic Meson SoCs.
903 To compile this driver as a module, choose M here: the
904 module will be called meson_wdt.
905
906config MEDIATEK_WATCHDOG
907 tristate "Mediatek SoCs watchdog support"
908 depends on ARCH_MEDIATEK || COMPILE_TEST
909 default ARCH_MEDIATEK
910 select WATCHDOG_CORE
911 select RESET_CONTROLLER
912 help
913 Say Y here to include support for the watchdog timer
914 in Mediatek SoCs.
915 To compile this driver as a module, choose M here: the
916 module will be called mtk_wdt.
917
918config DIGICOLOR_WATCHDOG
919 tristate "Conexant Digicolor SoCs watchdog support"
920 depends on ARCH_DIGICOLOR || COMPILE_TEST
921 select WATCHDOG_CORE
922 help
923 Say Y here to include support for the watchdog timer
924 in Conexant Digicolor SoCs.
925 To compile this driver as a module, choose M here: the
926 module will be called digicolor_wdt.
927
928config ARM_SMC_WATCHDOG
929 tristate "ARM Secure Monitor Call based watchdog support"
930 depends on ARM || ARM64
931 depends on OF
932 depends on HAVE_ARM_SMCCC
933 select WATCHDOG_CORE
934 help
935 Say Y here to include support for a watchdog timer
936 implemented by the EL3 Secure Monitor on ARM platforms.
937 Requires firmware support.
938 To compile this driver as a module, choose M here: the
939 module will be called arm_smc_wdt.
940
941config LPC18XX_WATCHDOG
942 tristate "LPC18xx/43xx Watchdog"
943 depends on ARCH_LPC18XX || COMPILE_TEST
944 depends on HAS_IOMEM
945 select WATCHDOG_CORE
946 help
947 Say Y here if to include support for the watchdog timer
948 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
949 processors.
950 To compile this driver as a module, choose M here: the
951 module will be called lpc18xx_wdt.
952
953config RENESAS_WDT
954 tristate "Renesas WDT Watchdog"
955 depends on ARCH_RENESAS || COMPILE_TEST
956 select WATCHDOG_CORE
957 help
958 This driver adds watchdog support for the integrated watchdogs in the
959 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
960
961config RENESAS_RZAWDT
962 tristate "Renesas RZ/A WDT Watchdog"
963 depends on ARCH_RENESAS || COMPILE_TEST
964 select WATCHDOG_CORE
965 help
966 This driver adds watchdog support for the integrated watchdogs in the
967 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
968
969config RENESAS_RZN1WDT
970 tristate "Renesas RZ/N1 watchdog"
971 depends on ARCH_RENESAS || COMPILE_TEST
972 select WATCHDOG_CORE
973 help
974 This driver adds watchdog support for the integrated watchdogs in the
975 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
976
977config RENESAS_RZG2LWDT
978 tristate "Renesas RZ/G2L WDT Watchdog"
979 depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
980 depends on PM || COMPILE_TEST
981 select WATCHDOG_CORE
982 help
983 This driver adds watchdog support for the integrated watchdogs in the
984 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
985
986config RENESAS_RZV2HWDT
987 tristate "Renesas RZ/{G3E,V2H(P)} WDT Watchdog"
988 depends on ARCH_RENESAS || COMPILE_TEST
989 depends on PM || COMPILE_TEST
990 select WATCHDOG_CORE
991 help
992 This driver adds watchdog support for the integrated watchdogs in the
993 Renesas RZ/{G3E,V2H(P)} SoCs. These watchdogs can be used to reset a
994 system.
995
996config ASPEED_WATCHDOG
997 tristate "Aspeed BMC watchdog support"
998 depends on ARCH_ASPEED || COMPILE_TEST
999 select WATCHDOG_CORE
1000 help
1001 Say Y here to include support for the watchdog timer
1002 in Aspeed BMC SoCs.
1003
1004 This driver is required to reboot the SoC.
1005
1006 To compile this driver as a module, choose M here: the
1007 module will be called aspeed_wdt.
1008
1009config STM32_WATCHDOG
1010 tristate "STM32 Independent WatchDoG (IWDG) support"
1011 depends on ARCH_STM32 || COMPILE_TEST
1012 select WATCHDOG_CORE
1013 default ARCH_STM32
1014 help
1015 Say Y here to include support for the watchdog timer
1016 in stm32 SoCs.
1017
1018 To compile this driver as a module, choose M here: the
1019 module will be called stm32_iwdg.
1020
1021config STPMIC1_WATCHDOG
1022 tristate "STPMIC1 PMIC watchdog support"
1023 depends on MFD_STPMIC1
1024 select WATCHDOG_CORE
1025 help
1026 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
1027 If the watchdog timer expires, stpmic1 will shut down all its power
1028 supplies.
1029
1030 To compile this driver as a module, choose M here: the
1031 module will be called spmic1_wdt.
1032
1033config UNIPHIER_WATCHDOG
1034 tristate "UniPhier watchdog support"
1035 depends on ARCH_UNIPHIER || COMPILE_TEST
1036 depends on OF && MFD_SYSCON
1037 select WATCHDOG_CORE
1038 help
1039 Say Y here to include support watchdog timer embedded
1040 into the UniPhier system.
1041
1042 To compile this driver as a module, choose M here: the
1043 module will be called uniphier_wdt.
1044
1045config RTD119X_WATCHDOG
1046 bool "Realtek RTD119x/RTD129x watchdog support"
1047 depends on ARCH_REALTEK || COMPILE_TEST
1048 depends on OF
1049 select WATCHDOG_CORE
1050 default ARCH_REALTEK
1051 help
1052 Say Y here to include support for the watchdog timer in
1053 Realtek RTD1295 SoCs.
1054
1055config REALTEK_OTTO_WDT
1056 tristate "Realtek Otto MIPS watchdog support"
1057 depends on MACH_REALTEK_RTL || COMPILE_TEST
1058 depends on COMMON_CLK
1059 select WATCHDOG_CORE
1060 default MACH_REALTEK_RTL
1061 help
1062 Say Y here to include support for the watchdog timer on Realtek
1063 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
1064 notifications and system reset on timeout.
1065
1066 When built as a module this will be called realtek_otto_wdt.
1067
1068config SPRD_WATCHDOG
1069 tristate "Spreadtrum watchdog support"
1070 depends on ARCH_SPRD || COMPILE_TEST
1071 select WATCHDOG_CORE
1072 help
1073 Say Y here to include watchdog timer supported
1074 by Spreadtrum system.
1075
1076config PM8916_WATCHDOG
1077 tristate "QCOM PM8916 pmic watchdog"
1078 depends on OF && MFD_SPMI_PMIC
1079 select WATCHDOG_CORE
1080 help
1081 Say Y here to include support watchdog timer embedded into the
1082 pm8916 module.
1083
1084config VISCONTI_WATCHDOG
1085 tristate "Toshiba Visconti series watchdog support"
1086 depends on ARCH_VISCONTI || COMPILE_TEST
1087 select WATCHDOG_CORE
1088 help
1089 Say Y here to include support for the watchdog timer in Toshiba
1090 Visconti SoCs.
1091
1092config MSC313E_WATCHDOG
1093 tristate "MStar MSC313e watchdog"
1094 depends on ARCH_MSTARV7 || COMPILE_TEST
1095 select WATCHDOG_CORE
1096 help
1097 Say Y here to include support for the Watchdog timer embedded
1098 into MStar MSC313e chips. This will reboot your system when the
1099 timeout is reached.
1100
1101 To compile this driver as a module, choose M here: the
1102 module will be called msc313e_wdt.
1103
1104config APPLE_WATCHDOG
1105 tristate "Apple SoC watchdog"
1106 depends on ARCH_APPLE || COMPILE_TEST
1107 select WATCHDOG_CORE
1108 help
1109 Say Y here to include support for the Watchdog found in Apple
1110 SoCs such as the M1. Next to the common watchdog features this
1111 driver is also required in order to reboot these SoCs.
1112
1113 To compile this driver as a module, choose M here: the
1114 module will be called apple_wdt.
1115
1116config SUNPLUS_WATCHDOG
1117 tristate "Sunplus watchdog support"
1118 depends on ARCH_SUNPLUS || COMPILE_TEST
1119 select WATCHDOG_CORE
1120 help
1121 Say Y here to include support for the watchdog timer
1122 in Sunplus SoCs.
1123
1124 To compile this driver as a module, choose M here: the
1125 module will be called sunplus_wdt.
1126
1127# X86 (i386 + ia64 + x86_64) Architecture
1128
1129config ACQUIRE_WDT
1130 tristate "Acquire SBC Watchdog Timer"
1131 depends on X86
1132 help
1133 This is the driver for the hardware watchdog on Single Board
1134 Computers produced by Acquire Inc (and others). This watchdog
1135 simply watches your kernel to make sure it doesn't freeze, and if
1136 it does, it reboots your computer after a certain amount of time.
1137
1138 To compile this driver as a module, choose M here: the
1139 module will be called acquirewdt.
1140
1141 Most people will say N.
1142
1143config ADVANTECH_WDT
1144 tristate "Advantech SBC Watchdog Timer"
1145 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1146 help
1147 If you are configuring a Linux kernel for the Advantech single-board
1148 computer, say `Y' here to support its built-in watchdog timer
1149 feature. More information can be found at
1150 <https://www.advantech.com.tw/products/>
1151
1152config ADVANTECH_EC_WDT
1153 tristate "Advantech Embedded Controller Watchdog Timer"
1154 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1155 select ISA_BUS_API
1156 select WATCHDOG_CORE
1157 help
1158 This driver supports Advantech products with ITE based Embedded Controller.
1159 It does not support Advantech products with other ECs or without EC.
1160
1161config ALIM1535_WDT
1162 tristate "ALi M1535 PMU Watchdog Timer"
1163 depends on (X86 || COMPILE_TEST) && PCI
1164 help
1165 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1166
1167 To compile this driver as a module, choose M here: the
1168 module will be called alim1535_wdt.
1169
1170 Most people will say N.
1171
1172config ALIM7101_WDT
1173 tristate "ALi M7101 PMU Computer Watchdog"
1174 depends on PCI
1175 help
1176 This is the driver for the hardware watchdog on the ALi M7101 PMU
1177 as used in the x86 Cobalt servers and also found in some
1178 SPARC Netra servers too.
1179
1180 To compile this driver as a module, choose M here: the
1181 module will be called alim7101_wdt.
1182
1183 Most people will say N.
1184
1185config CGBC_WDT
1186 tristate "Congatec Board Controller Watchdog Timer"
1187 depends on MFD_CGBC
1188 select WATCHDOG_CORE
1189 help
1190 Enables watchdog timer support for the Congatec Board Controller.
1191
1192 This driver can also be built as a module. If so, the module will be
1193 called cgbc_wdt.
1194
1195config EBC_C384_WDT
1196 tristate "WinSystems EBC-C384 Watchdog Timer"
1197 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1198 select ISA_BUS_API
1199 select WATCHDOG_CORE
1200 help
1201 Enables watchdog timer support for the watchdog timer on the
1202 WinSystems EBC-C384 motherboard. The timeout may be configured via
1203 the timeout module parameter.
1204
1205config EXAR_WDT
1206 tristate "Exar Watchdog Timer"
1207 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1208 select WATCHDOG_CORE
1209 help
1210 Enables watchdog timer support for the watchdog timer present
1211 in some Exar/MaxLinear UART chips like the XR28V38x.
1212
1213 To compile this driver as a module, choose M here: the
1214 module will be called exar_wdt.
1215
1216config F71808E_WDT
1217 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1218 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1219 select WATCHDOG_CORE
1220 help
1221 This is the driver for the hardware watchdog on the Fintek F71808E,
1222 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1223 F81866 Super I/O controllers.
1224
1225 You can compile this driver directly into the kernel, or use
1226 it as a module. The module will be called f71808e_wdt.
1227
1228config SP5100_TCO
1229 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1230 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1231 select WATCHDOG_CORE
1232 help
1233 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1234 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1235 the machine after its expiration. The expiration time can be
1236 configured with the "heartbeat" parameter.
1237
1238 To compile this driver as a module, choose M here: the
1239 module will be called sp5100_tco.
1240
1241config GEODE_WDT
1242 tristate "AMD Geode CS5535/CS5536 Watchdog"
1243 depends on CS5535_MFGPT
1244 help
1245 This driver enables a watchdog capability built into the
1246 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1247 processors. This watchdog watches your kernel to make sure
1248 it doesn't freeze, and if it does, it reboots your computer after
1249 a certain amount of time.
1250
1251 You can compile this driver directly into the kernel, or use
1252 it as a module. The module will be called geodewdt.
1253
1254config SC520_WDT
1255 tristate "AMD Elan SC520 processor Watchdog"
1256 depends on MELAN || COMPILE_TEST
1257 help
1258 This is the driver for the hardware watchdog built in to the
1259 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1260 This watchdog simply watches your kernel to make sure it doesn't
1261 freeze, and if it does, it reboots your computer after a certain
1262 amount of time.
1263
1264 You can compile this driver directly into the kernel, or use
1265 it as a module. The module will be called sc520_wdt.
1266
1267config SBC_FITPC2_WATCHDOG
1268 tristate "Compulab SBC-FITPC2 watchdog"
1269 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1270 help
1271 This is the driver for the built-in watchdog timer on the fit-PC2,
1272 fit-PC2i, CM-iAM single-board computers made by Compulab.
1273
1274 It's possible to enable the watchdog timer either from BIOS (F2) or
1275 from booted Linux.
1276 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1277 operational range.
1278
1279 Entering BIOS setup temporarily disables watchdog operation regardless
1280 of current state, so system will not be restarted while user is in
1281 BIOS setup.
1282
1283 Once the watchdog is enabled the system will be restarted every
1284 "Watchdog Timer Value" period, so to prevent it user can restart or
1285 disable the watchdog.
1286
1287 To compile this driver as a module, choose M here: the
1288 module will be called sbc_fitpc2_wdt.
1289
1290 Most people will say N.
1291
1292config EUROTECH_WDT
1293 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1294 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1295 help
1296 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1297 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1298 information are at <http://www.eurotech.it/>.
1299
1300config IB700_WDT
1301 tristate "IB700 SBC Watchdog Timer"
1302 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1303 help
1304 This is the driver for the hardware watchdog on the IB700 Single
1305 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1306 watchdog simply watches your kernel to make sure it doesn't freeze,
1307 and if it does, it reboots your computer after a certain amount of time.
1308
1309 This driver is like the WDT501 driver but for slightly different
1310 hardware.
1311
1312 To compile this driver as a module, choose M here: the
1313 module will be called ib700wdt.
1314
1315 Most people will say N.
1316
1317config IBMASR
1318 tristate "IBM Automatic Server Restart"
1319 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1320 help
1321 This is the driver for the IBM Automatic Server Restart watchdog
1322 timer built-in into some eServer xSeries machines.
1323
1324 To compile this driver as a module, choose M here: the
1325 module will be called ibmasr.
1326
1327config WAFER_WDT
1328 tristate "ICP Single Board Computer Watchdog Timer"
1329 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1330 help
1331 This is a driver for the hardware watchdog on the ICP Single
1332 Board Computer. This driver is working on (at least) the following
1333 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1334
1335 To compile this driver as a module, choose M here: the
1336 module will be called wafer5823wdt.
1337
1338config I6300ESB_WDT
1339 tristate "Intel 6300ESB Timer/Watchdog"
1340 depends on PCI
1341 select WATCHDOG_CORE
1342 help
1343 Hardware driver for the watchdog timer built into the Intel
1344 6300ESB controller hub.
1345
1346 To compile this driver as a module, choose M here: the
1347 module will be called i6300esb.
1348
1349config IE6XX_WDT
1350 tristate "Intel Atom E6xx Watchdog"
1351 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1352 select WATCHDOG_CORE
1353 select MFD_CORE
1354 select LPC_SCH
1355 help
1356 Hardware driver for the watchdog timer built into the Intel
1357 Atom E6XX (TunnelCreek) processor.
1358
1359 To compile this driver as a module, choose M here: the
1360 module will be called ie6xx_wdt.
1361
1362config INTEL_MID_WATCHDOG
1363 tristate "Intel MID Watchdog Timer"
1364 depends on X86_INTEL_MID
1365 select WATCHDOG_CORE
1366 help
1367 Watchdog timer driver built into the Intel SCU for Intel MID
1368 Platforms.
1369
1370 This driver currently supports only the watchdog evolution
1371 implementation in SCU, available for Merrifield generation.
1372
1373 To compile this driver as a module, choose M here.
1374
1375config INTEL_OC_WATCHDOG
1376 tristate "Intel OC Watchdog"
1377 depends on (X86 || COMPILE_TEST) && ACPI && HAS_IOPORT
1378 select WATCHDOG_CORE
1379 help
1380 Hardware driver for Intel Over-Clocking watchdog present in
1381 Platform Controller Hub (PCH) chipsets.
1382
1383 To compile this driver as a module, choose M here: the
1384 module will be called intel_oc_wdt.
1385
1386config ITCO_WDT
1387 tristate "Intel TCO Timer/Watchdog"
1388 depends on X86 && PCI
1389 select WATCHDOG_CORE
1390 depends on I2C || I2C=n
1391 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1392 depends on HAS_IOPORT # for I2C_I801
1393 select LPC_ICH if !EXPERT
1394 select I2C_I801 if !EXPERT && I2C
1395 help
1396 Hardware driver for the intel TCO timer based watchdog devices.
1397 These drivers are included in the Intel 82801 I/O Controller
1398 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1399 controller hub.
1400
1401 The TCO (Total Cost of Ownership) timer is a watchdog timer
1402 that will reboot the machine after its second expiration. The
1403 expiration time can be configured with the "heartbeat" parameter.
1404
1405 On some motherboards the driver may fail to reset the chipset's
1406 NO_REBOOT flag which prevents the watchdog from rebooting the
1407 machine. If this is the case you will get a kernel message like
1408 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1409
1410 To compile this driver as a module, choose M here: the
1411 module will be called iTCO_wdt.
1412
1413config ITCO_VENDOR_SUPPORT
1414 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1415 depends on ITCO_WDT
1416 help
1417 Add vendor specific support to the intel TCO timer based watchdog
1418 devices. At this moment we only have additional support for some
1419 SuperMicro Inc. motherboards.
1420
1421config IT8712F_WDT
1422 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1423 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1424 help
1425 This is the driver for the built-in watchdog timer on the IT8712F
1426 Super I/0 chipset used on many motherboards.
1427
1428 If the driver does not work, then make sure that the game port in
1429 the BIOS is enabled.
1430
1431 To compile this driver as a module, choose M here: the
1432 module will be called it8712f_wdt.
1433
1434config IT87_WDT
1435 tristate "IT87 Watchdog Timer"
1436 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1437 select WATCHDOG_CORE
1438 help
1439 This is the driver for the hardware watchdog on the ITE IT8607,
1440 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1441 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1442 IT8783 Super I/O chips.
1443
1444 This watchdog simply watches your kernel to make sure it doesn't
1445 freeze, and if it does, it reboots your computer after a certain
1446 amount of time.
1447
1448 To compile this driver as a module, choose M here: the module will
1449 be called it87_wdt.
1450
1451config HP_WATCHDOG
1452 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1453 select WATCHDOG_CORE
1454 depends on (ARM64 || X86 || COMPILE_TEST) && PCI
1455 help
1456 A software monitoring watchdog and NMI handling driver. This driver
1457 will detect lockups and provide a stack trace. This is a driver that
1458 will only load on an HP ProLiant system with a minimum of iLO2 support.
1459 To compile this driver as a module, choose M here: the module will be
1460 called hpwdt.
1461
1462config HPWDT_NMI_DECODING
1463 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1464 depends on X86 && HP_WATCHDOG
1465 default y
1466 help
1467 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1468 "Generate NMI to System" virtual button. When an NMI is claimed
1469 by the driver, panic is called.
1470
1471config KEMPLD_WDT
1472 tristate "Kontron COM Watchdog Timer"
1473 depends on MFD_KEMPLD
1474 select WATCHDOG_CORE
1475 help
1476 Support for the PLD watchdog on some Kontron ETX and COMexpress
1477 (ETXexpress) modules
1478
1479 This driver can also be built as a module. If so, the module will be
1480 called kempld_wdt.
1481
1482config SC1200_WDT
1483 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1484 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1485 help
1486 This is a driver for National Semiconductor PC87307/PC97307 hardware
1487 watchdog cards as found on the SC1200. This watchdog is mainly used
1488 for power management purposes and can be used to power down the device
1489 during inactivity periods (includes interrupt activity monitoring).
1490
1491 To compile this driver as a module, choose M here: the
1492 module will be called sc1200wdt.
1493
1494 Most people will say N.
1495
1496config SCx200_WDT
1497 tristate "National Semiconductor SCx200 Watchdog"
1498 depends on SCx200 && PCI
1499 help
1500 Enable the built-in watchdog timer support on the National
1501 Semiconductor SCx200 processors.
1502
1503 If compiled as a module, it will be called scx200_wdt.
1504
1505config PC87413_WDT
1506 tristate "NS PC87413 watchdog"
1507 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1508 help
1509 This is the driver for the hardware watchdog on the PC87413 chipset
1510 This watchdog simply watches your kernel to make sure it doesn't
1511 freeze, and if it does, it reboots your computer after a certain
1512 amount of time.
1513
1514 To compile this driver as a module, choose M here: the
1515 module will be called pc87413_wdt.
1516
1517 Most people will say N.
1518
1519config NV_TCO
1520 tristate "nVidia TCO Timer/Watchdog"
1521 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1522 help
1523 Hardware driver for the TCO timer built into the nVidia Hub family
1524 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1525 watchdog timer that will reboot the machine after its second
1526 expiration. The expiration time can be configured with the
1527 "heartbeat" parameter.
1528
1529 On some motherboards the driver may fail to reset the chipset's
1530 NO_REBOOT flag which prevents the watchdog from rebooting the
1531 machine. If this is the case you will get a kernel message like
1532 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1533
1534 To compile this driver as a module, choose M here: the
1535 module will be called nv_tco.
1536
1537config RDC321X_WDT
1538 tristate "RDC R-321x SoC watchdog"
1539 depends on X86_RDC321X || COMPILE_TEST
1540 depends on PCI
1541 help
1542 This is the driver for the built in hardware watchdog
1543 in the RDC R-321x SoC.
1544
1545 To compile this driver as a module, choose M here: the
1546 module will be called rdc321x_wdt.
1547
1548config 60XX_WDT
1549 tristate "SBC-60XX Watchdog Timer"
1550 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1551 help
1552 This driver can be used with the watchdog timer found on some
1553 single board computers, namely the 6010 PII based computer.
1554 It may well work with other cards. It reads port 0x443 to enable
1555 and re-set the watchdog timer, and reads port 0x45 to disable
1556 the watchdog. If you have a card that behave in similar ways,
1557 you can probably make this driver work with your card as well.
1558
1559 You can compile this driver directly into the kernel, or use
1560 it as a module. The module will be called sbc60xxwdt.
1561
1562config SBC8360_WDT
1563 tristate "SBC8360 Watchdog Timer"
1564 depends on X86_32 && HAS_IOPORT
1565 help
1566
1567 This is the driver for the hardware watchdog on the SBC8360 Single
1568 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1569
1570 To compile this driver as a module, choose M here: the
1571 module will be called sbc8360.
1572
1573 Most people will say N.
1574
1575config SBC7240_WDT
1576 tristate "SBC Nano 7240 Watchdog Timer"
1577 depends on X86_32 && HAS_IOPORT
1578 help
1579 This is the driver for the hardware watchdog found on the IEI
1580 single board computers EPIC Nano 7240 (and likely others). This
1581 watchdog simply watches your kernel to make sure it doesn't freeze,
1582 and if it does, it reboots your computer after a certain amount of
1583 time.
1584
1585 To compile this driver as a module, choose M here: the
1586 module will be called sbc7240_wdt.
1587
1588config SMSC_SCH311X_WDT
1589 tristate "SMSC SCH311X Watchdog Timer"
1590 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1591 help
1592 This is the driver for the hardware watchdog timer on the
1593 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1594 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1595 serial ports).
1596
1597 To compile this driver as a module, choose M here: the
1598 module will be called sch311x_wdt.
1599
1600config SMSC37B787_WDT
1601 tristate "Winbond SMsC37B787 Watchdog Timer"
1602 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1603 help
1604 This is the driver for the hardware watchdog component on the
1605 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1606 from Vision Systems and maybe others.
1607
1608 This watchdog simply watches your kernel to make sure it doesn't
1609 freeze, and if it does, it reboots your computer after a certain
1610 amount of time.
1611
1612 Usually a userspace daemon will notify the kernel WDT driver that
1613 userspace is still alive, at regular intervals.
1614
1615 To compile this driver as a module, choose M here: the
1616 module will be called smsc37b787_wdt.
1617
1618 Most people will say N.
1619
1620config TQMX86_WDT
1621 tristate "TQ-Systems TQMX86 Watchdog Timer"
1622 depends on X86 || COMPILE_TEST
1623 select WATCHDOG_CORE
1624 help
1625 This is the driver for the hardware watchdog timer in the TQMX86 IO
1626 controller found on some of their ComExpress Modules.
1627
1628 To compile this driver as a module, choose M here; the module
1629 will be called tqmx86_wdt.
1630
1631 Most people will say N.
1632
1633config VIA_WDT
1634 tristate "VIA Watchdog Timer"
1635 depends on (X86 || COMPILE_TEST) && PCI
1636 select WATCHDOG_CORE
1637 help
1638 This is the driver for the hardware watchdog timer on VIA
1639 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1640
1641 To compile this driver as a module, choose M here; the module
1642 will be called via_wdt.
1643
1644 Most people will say N.
1645
1646config W83627HF_WDT
1647 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1648 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1649 select WATCHDOG_CORE
1650 help
1651 This is the driver for the hardware watchdog on the following
1652 Super I/O chips.
1653 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1654 W83637HF
1655 W83667HG/HG-B
1656 W83687THF
1657 W83697HF
1658 W83697UG
1659 NCT6775
1660 NCT6776
1661 NCT6779
1662 NCT6791
1663 NCT6792
1664 NCT6102D/04D/06D
1665 NCT6116D
1666
1667 This watchdog simply watches your kernel to make sure it doesn't
1668 freeze, and if it does, it reboots your computer after a certain
1669 amount of time.
1670
1671 To compile this driver as a module, choose M here: the
1672 module will be called w83627hf_wdt.
1673
1674 Most people will say N.
1675
1676config W83877F_WDT
1677 tristate "W83877F (EMACS) Watchdog Timer"
1678 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1679 help
1680 This is the driver for the hardware watchdog on the W83877F chipset
1681 as used in EMACS PC-104 motherboards (and likely others). This
1682 watchdog simply watches your kernel to make sure it doesn't freeze,
1683 and if it does, it reboots your computer after a certain amount of
1684 time.
1685
1686 To compile this driver as a module, choose M here: the
1687 module will be called w83877f_wdt.
1688
1689 Most people will say N.
1690
1691config W83977F_WDT
1692 tristate "W83977F (PCM-5335) Watchdog Timer"
1693 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1694 help
1695 This is the driver for the hardware watchdog on the W83977F I/O chip
1696 as used in AAEON's PCM-5335 SBC (and likely others). This
1697 watchdog simply watches your kernel to make sure it doesn't freeze,
1698 and if it does, it reboots your computer after a certain amount of
1699 time.
1700
1701 To compile this driver as a module, choose M here: the
1702 module will be called w83977f_wdt.
1703
1704config MACHZ_WDT
1705 tristate "ZF MachZ Watchdog"
1706 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1707 help
1708 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1709 N. This is the driver for the watchdog timer built-in on that
1710 processor using ZF-Logic interface. This watchdog simply watches
1711 your kernel to make sure it doesn't freeze, and if it does, it
1712 reboots your computer after a certain amount of time.
1713
1714 To compile this driver as a module, choose M here: the
1715 module will be called machzwd.
1716
1717config SBC_EPX_C3_WATCHDOG
1718 tristate "Winsystems SBC EPX-C3 watchdog"
1719 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1720 help
1721 This is the driver for the built-in watchdog timer on the EPX-C3
1722 Single-board computer made by Winsystems, Inc.
1723
1724 *Note*: This hardware watchdog is not probeable and thus there
1725 is no way to know if writing to its IO address will corrupt
1726 your system or have any real effect. The only way to be sure
1727 that this driver does what you want is to make sure you
1728 are running it on an EPX-C3 from Winsystems with the watchdog
1729 timer at IO address 0x1ee and 0x1ef. It will write to both those
1730 IO ports. Basically, the assumption is made that if you compile
1731 this driver into your kernel and/or load it as a module, that you
1732 know what you are doing and that you are in fact running on an
1733 EPX-C3 board!
1734
1735 To compile this driver as a module, choose M here: the
1736 module will be called sbc_epx_c3.
1737
1738config INTEL_MEI_WDT
1739 tristate "Intel MEI iAMT Watchdog"
1740 depends on INTEL_MEI && X86
1741 select WATCHDOG_CORE
1742 help
1743 A device driver for the Intel MEI iAMT watchdog.
1744
1745 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1746 Whenever the OS hangs or crashes, iAMT will send an event
1747 to any subscriber to this event. The watchdog doesn't reset the
1748 the platform.
1749
1750 To compile this driver as a module, choose M here:
1751 the module will be called mei_wdt.
1752
1753config NI903X_WDT
1754 tristate "NI 903x/913x Watchdog"
1755 depends on X86 && ACPI
1756 select WATCHDOG_CORE
1757 help
1758 This is the driver for the watchdog timer on the National Instruments
1759 903x/913x real-time controllers.
1760
1761 To compile this driver as a module, choose M here: the module will be
1762 called ni903x_wdt.
1763
1764config NIC7018_WDT
1765 tristate "NIC7018 Watchdog"
1766 depends on HAS_IOPORT
1767 depends on ACPI || COMPILE_TEST
1768 select WATCHDOG_CORE
1769 help
1770 Support for National Instruments NIC7018 Watchdog.
1771
1772 To compile this driver as a module, choose M here: the module will be
1773 called nic7018_wdt.
1774
1775config SIEMENS_SIMATIC_IPC_WDT
1776 tristate "Siemens Simatic IPC Watchdog"
1777 depends on SIEMENS_SIMATIC_IPC && PCI
1778 default y
1779 select WATCHDOG_CORE
1780 select P2SB if X86
1781 help
1782 This driver adds support for several watchdogs found in Industrial
1783 PCs from Siemens.
1784
1785 To compile this driver as a module, choose M here: the module will be
1786 called simatic-ipc-wdt.
1787
1788# M68K Architecture
1789
1790config M54xx_WATCHDOG
1791 tristate "MCF54xx watchdog support"
1792 depends on M548x
1793 help
1794 To compile this driver as a module, choose M here: the
1795 module will be called m54xx_wdt.
1796
1797# MicroBlaze Architecture
1798
1799# MIPS Architecture
1800
1801config ATH79_WDT
1802 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1803 depends on ATH79 || (ARM && COMPILE_TEST)
1804 help
1805 Hardware driver for the built-in watchdog timer on the Atheros
1806 AR71XX/AR724X/AR913X SoCs.
1807
1808config BCM47XX_WDT
1809 tristate "Broadcom BCM47xx Watchdog Timer"
1810 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1811 select WATCHDOG_CORE
1812 help
1813 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1814
1815config RC32434_WDT
1816 tristate "IDT RC32434 SoC Watchdog Timer"
1817 depends on MIKROTIK_RB532
1818 help
1819 Hardware driver for the IDT RC32434 SoC built-in
1820 watchdog timer.
1821
1822 To compile this driver as a module, choose M here: the
1823 module will be called rc32434_wdt.
1824
1825config INDYDOG
1826 tristate "Indy/I2 Hardware Watchdog"
1827 depends on SGI_HAS_INDYDOG
1828 help
1829 Hardware driver for the Indy's/I2's watchdog. This is a
1830 watchdog timer that will reboot the machine after a 60 second
1831 timer expired and no process has written to /dev/watchdog during
1832 that time.
1833
1834config JZ4740_WDT
1835 tristate "Ingenic jz4740 SoC hardware watchdog"
1836 depends on MIPS || COMPILE_TEST
1837 depends on COMMON_CLK
1838 select WATCHDOG_CORE
1839 select MFD_SYSCON
1840 help
1841 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1842
1843config WDT_MTX1
1844 tristate "MTX-1 Hardware Watchdog"
1845 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1846 help
1847 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1848 will reboot the machine after a 100 seconds timer expired.
1849
1850config SIBYTE_WDOG
1851 tristate "Sibyte SoC hardware watchdog"
1852 depends on CPU_SB1
1853 help
1854 Watchdog driver for the built in watchdog hardware in Sibyte
1855 SoC processors. There are apparently two watchdog timers
1856 on such processors; this driver supports only the first one,
1857 because currently Linux only supports exporting one watchdog
1858 to userspace.
1859
1860 To compile this driver as a loadable module, choose M here.
1861 The module will be called sb_wdog.
1862
1863config TXX9_WDT
1864 tristate "Toshiba TXx9 Watchdog Timer"
1865 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1866 select WATCHDOG_CORE
1867 help
1868 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1869
1870config OCTEON_WDT
1871 tristate "Cavium OCTEON SOC family Watchdog Timer"
1872 depends on CAVIUM_OCTEON_SOC
1873 default y
1874 select WATCHDOG_CORE
1875 select EXPORT_UASM if OCTEON_WDT = m
1876 help
1877 Hardware driver for OCTEON's on chip watchdog timer.
1878 Enables the watchdog for all cores running Linux. It
1879 installs a NMI handler and pokes the watchdog based on an
1880 interrupt. On first expiration of the watchdog, the
1881 interrupt handler pokes it. The second expiration causes an
1882 NMI that prints a message. The third expiration causes a
1883 global soft reset.
1884
1885 When userspace has /dev/watchdog open, no poking is done
1886 from the first interrupt, it is then only poked when the
1887 device is written.
1888
1889config MARVELL_GTI_WDT
1890 tristate "Marvell GTI Watchdog driver"
1891 depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
1892 default ARCH_THUNDER
1893 select WATCHDOG_CORE
1894 help
1895 Marvell GTI hardware supports watchdog timer. First timeout
1896 works as watchdog pretimeout and installed interrupt handler
1897 will be called on first timeout. Hardware can generate interrupt
1898 to SCP on second timeout but it is not enabled, so second
1899 timeout is ignored. If device poke does not happen then system
1900 will reboot on third timeout.
1901
1902config BCM2835_WDT
1903 tristate "Broadcom BCM2835 hardware watchdog"
1904 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1905 select WATCHDOG_CORE
1906 help
1907 Watchdog driver for the built in watchdog hardware in Broadcom
1908 BCM2835 SoC.
1909
1910 To compile this driver as a loadable module, choose M here.
1911 The module will be called bcm2835_wdt.
1912
1913config BCM_KONA_WDT
1914 tristate "BCM Kona Watchdog"
1915 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1916 select WATCHDOG_CORE
1917 help
1918 Support for the watchdog timer on the following Broadcom BCM281xx
1919 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1920 BCM28155 variants.
1921
1922 Say 'Y' or 'M' here to enable the driver. The module will be called
1923 bcm_kona_wdt.
1924
1925config BCM_KONA_WDT_DEBUG
1926 bool "DEBUGFS support for BCM Kona Watchdog"
1927 depends on BCM_KONA_WDT || COMPILE_TEST
1928 help
1929 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1930 access to the driver's internal data structures as well as watchdog
1931 timer hardware registres.
1932
1933 If in doubt, say 'N'.
1934
1935config BCM7038_WDT
1936 tristate "BCM63xx/BCM7038 Watchdog"
1937 select WATCHDOG_CORE
1938 depends on HAS_IOMEM
1939 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1940 help
1941 Watchdog driver for the built-in hardware in Broadcom 7038 and
1942 later SoCs used in set-top boxes. BCM7038 was made public
1943 during the 2004 CES, and since then, many Broadcom chips use this
1944 watchdog block, including some cable modem chips and DSL (63xx)
1945 chips.
1946
1947config IMGPDC_WDT
1948 tristate "Imagination Technologies PDC Watchdog Timer"
1949 depends on HAS_IOMEM
1950 depends on MIPS || COMPILE_TEST
1951 select WATCHDOG_CORE
1952 help
1953 Driver for Imagination Technologies PowerDown Controller
1954 Watchdog Timer.
1955
1956 To compile this driver as a loadable module, choose M here.
1957 The module will be called imgpdc_wdt.
1958
1959config LANTIQ_WDT
1960 tristate "Lantiq SoC watchdog"
1961 depends on LANTIQ
1962 select WATCHDOG_CORE
1963 help
1964 Hardware driver for the Lantiq SoC Watchdog Timer.
1965
1966config LOONGSON1_WDT
1967 tristate "Loongson1 SoC hardware watchdog"
1968 depends on MACH_LOONGSON32 || COMPILE_TEST
1969 select WATCHDOG_CORE
1970 help
1971 Hardware driver for the Loongson1 SoC Watchdog Timer.
1972
1973config RALINK_WDT
1974 tristate "Ralink SoC watchdog"
1975 select WATCHDOG_CORE
1976 depends on RALINK
1977 help
1978 Hardware driver for the Ralink SoC Watchdog Timer.
1979
1980config GXP_WATCHDOG
1981 tristate "HPE GXP watchdog support"
1982 depends on ARCH_HPE_GXP || COMPILE_TEST
1983 select WATCHDOG_CORE
1984 help
1985 Say Y here to include support for the watchdog timer
1986 in HPE GXP SoCs.
1987
1988 To compile this driver as a module, choose M here.
1989 The module will be called gxp-wdt.
1990
1991config MT7621_WDT
1992 tristate "Mediatek SoC watchdog"
1993 select WATCHDOG_CORE
1994 select REGMAP_MMIO
1995 select MFD_SYSCON
1996 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1997 help
1998 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1999
2000config PIC32_WDT
2001 tristate "Microchip PIC32 hardware watchdog"
2002 select WATCHDOG_CORE
2003 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
2004 help
2005 Watchdog driver for the built in watchdog hardware in a PIC32.
2006
2007 Configuration bits must be set appropriately for the watchdog to be
2008 controlled by this driver.
2009
2010 To compile this driver as a loadable module, choose M here.
2011 The module will be called pic32-wdt.
2012
2013config PIC32_DMT
2014 tristate "Microchip PIC32 Deadman Timer"
2015 select WATCHDOG_CORE
2016 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
2017 help
2018 Watchdog driver for PIC32 instruction fetch counting timer. This
2019 specific timer is typically be used in mission critical and safety
2020 critical applications, where any single failure of the software
2021 functionality and sequencing must be detected.
2022
2023 To compile this driver as a loadable module, choose M here.
2024 The module will be called pic32-dmt.
2025
2026# PARISC Architecture
2027
2028# POWERPC Architecture
2029
2030config GEF_WDT
2031 tristate "GE Watchdog Timer"
2032 depends on GE_FPGA
2033 help
2034 Watchdog timer found in a number of GE single board computers.
2035
2036config MPC5200_WDT
2037 bool "MPC52xx Watchdog Timer"
2038 depends on PPC_MPC52xx || COMPILE_TEST
2039 help
2040 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
2041
2042config 8xxx_WDT
2043 tristate "MPC8xxx Platform Watchdog Timer"
2044 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
2045 select WATCHDOG_CORE
2046 help
2047 This driver is for a SoC level watchdog that exists on some
2048 Freescale PowerPC processors. So far this driver supports:
2049 - MPC8xx watchdogs
2050 - MPC83xx watchdogs
2051 - MPC86xx watchdogs
2052
2053 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
2054
2055config PIKA_WDT
2056 tristate "PIKA FPGA Watchdog"
2057 depends on WARP || (PPC64 && COMPILE_TEST)
2058 default WARP
2059 help
2060 This enables the watchdog in the PIKA FPGA. Currently used on
2061 the Warp platform.
2062
2063config BOOKE_WDT
2064 tristate "PowerPC Book-E Watchdog Timer"
2065 depends on BOOKE || 4xx
2066 select WATCHDOG_CORE
2067 help
2068 Watchdog driver for PowerPC Book-E chips, such as the Freescale
2069 MPC85xx SOCs and the IBM PowerPC 440.
2070
2071 Please see Documentation/watchdog/watchdog-api.rst for
2072 more information.
2073
2074config BOOKE_WDT_DEFAULT_TIMEOUT
2075 int "PowerPC Book-E Watchdog Timer Default Timeout"
2076 depends on BOOKE_WDT
2077 default 38 if PPC_E500
2078 range 0 63 if PPC_E500
2079 default 3 if !PPC_E500
2080 range 0 3 if !PPC_E500
2081 help
2082 Select the default watchdog timer period to be used by the PowerPC
2083 Book-E watchdog driver. A watchdog "event" occurs when the bit
2084 position represented by this number transitions from zero to one.
2085
2086 For Freescale Book-E processors, this is a number between 0 and 63.
2087 For other Book-E processors, this is a number between 0 and 3.
2088
2089 The value can be overridden by the wdt_period command-line parameter.
2090
2091config MEN_A21_WDT
2092 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
2093 select WATCHDOG_CORE
2094 depends on GPIOLIB || COMPILE_TEST
2095 help
2096 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
2097
2098 The driver can also be built as a module. If so, the module will be
2099 called mena21_wdt.
2100
2101 If unsure select N here.
2102
2103# PPC64 Architecture
2104
2105config PSERIES_WDT
2106 tristate "POWER Architecture Platform Watchdog Timer"
2107 depends on PPC_PSERIES
2108 select WATCHDOG_CORE
2109 help
2110 Driver for virtual watchdog timers provided by PAPR
2111 hypervisors (e.g. PowerVM, KVM).
2112
2113config WATCHDOG_RTAS
2114 tristate "RTAS watchdog"
2115 depends on PPC_RTAS
2116 help
2117 This driver adds watchdog support for the RTAS watchdog.
2118
2119 To compile this driver as a module, choose M here. The module
2120 will be called wdrtas.
2121
2122# RISC-V Architecture
2123
2124config STARFIVE_WATCHDOG
2125 tristate "StarFive Watchdog support"
2126 depends on ARCH_STARFIVE || COMPILE_TEST
2127 select WATCHDOG_CORE
2128 default ARCH_STARFIVE
2129 help
2130 Say Y here to support the watchdog of StarFive JH7100 and JH7110
2131 SoC. This driver can also be built as a module if choose M.
2132
2133# S390 Architecture
2134
2135config DIAG288_WATCHDOG
2136 tristate "System z diag288 Watchdog"
2137 depends on S390
2138 select WATCHDOG_CORE
2139 help
2140 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2141 provide a virtual watchdog timer to their guest that cause a
2142 user define Control Program command to be executed after a
2143 timeout.
2144 LPAR provides a very similar interface. This driver handles
2145 both.
2146
2147 To compile this driver as a module, choose M here. The module
2148 will be called diag288_wdt.
2149
2150# SUPERH (sh + sh64) Architecture
2151
2152config SH_WDT
2153 tristate "SuperH Watchdog"
2154 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2155 select WATCHDOG_CORE
2156 help
2157 This driver adds watchdog support for the integrated watchdog in the
2158 SuperH processors. If you have one of these processors and wish
2159 to have watchdog support enabled, say Y, otherwise say N.
2160
2161 As a side note, saying Y here will automatically boost HZ to 1000
2162 so that the timer has a chance to clear the overflow counter. On
2163 slower systems (such as the SH-2 and SH-3) this will likely yield
2164 some performance issues. As such, the WDT should be avoided here
2165 unless it is absolutely necessary.
2166
2167 To compile this driver as a module, choose M here: the
2168 module will be called shwdt.
2169
2170# SPARC Architecture
2171
2172# SPARC64 Architecture
2173
2174config WATCHDOG_CP1XXX
2175 tristate "CP1XXX Hardware Watchdog support"
2176 depends on SPARC64 && PCI
2177 help
2178 This is the driver for the hardware watchdog timers present on
2179 Sun Microsystems CompactPCI models CP1400 and CP1500.
2180
2181 To compile this driver as a module, choose M here: the
2182 module will be called cpwatchdog.
2183
2184 If you do not have a CompactPCI model CP1400 or CP1500, or
2185 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2186 you should say N to this option.
2187
2188config WATCHDOG_RIO
2189 tristate "RIO Hardware Watchdog support"
2190 depends on SPARC64 && PCI
2191 help
2192 Say Y here to support the hardware watchdog capability on Sun RIO
2193 machines. The watchdog timeout period is normally one minute but
2194 can be changed with a boot-time parameter.
2195
2196config WATCHDOG_SUN4V
2197 tristate "Sun4v Watchdog support"
2198 select WATCHDOG_CORE
2199 depends on SPARC64
2200 help
2201 Say Y here to support the hypervisor watchdog capability embedded
2202 in the SPARC sun4v architecture.
2203
2204 To compile this driver as a module, choose M here. The module will
2205 be called sun4v_wdt.
2206
2207# XTENSA Architecture
2208
2209# Xen Architecture
2210
2211config XEN_WDT
2212 tristate "Xen Watchdog support"
2213 depends on XEN
2214 select WATCHDOG_CORE
2215 help
2216 Say Y here to support the hypervisor watchdog capability provided
2217 by Xen 4.0 and newer. The watchdog timeout period is normally one
2218 minute but can be changed with a boot-time parameter.
2219
2220config UML_WATCHDOG
2221 tristate "UML watchdog"
2222 depends on UML || COMPILE_TEST
2223
2224#
2225# ISA-based Watchdog Cards
2226#
2227
2228comment "ISA-based Watchdog Cards"
2229 depends on ISA
2230
2231config PCWATCHDOG
2232 tristate "Berkshire Products ISA-PC Watchdog"
2233 depends on ISA
2234 help
2235 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2236 This card simply watches your kernel to make sure it doesn't freeze,
2237 and if it does, it reboots your computer after a certain amount of
2238 time. This driver is like the WDT501 driver but for different
2239 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2240 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2241
2242 To compile this driver as a module, choose M here: the
2243 module will be called pcwd.
2244
2245 Most people will say N.
2246
2247config MIXCOMWD
2248 tristate "Mixcom Watchdog"
2249 depends on ISA
2250 help
2251 This is a driver for the Mixcom hardware watchdog cards. This
2252 watchdog simply watches your kernel to make sure it doesn't freeze,
2253 and if it does, it reboots your computer after a certain amount of
2254 time.
2255
2256 To compile this driver as a module, choose M here: the
2257 module will be called mixcomwd.
2258
2259 Most people will say N.
2260
2261config WDT
2262 tristate "WDT Watchdog timer"
2263 depends on ISA
2264 help
2265 If you have a WDT500P or WDT501P watchdog board, say Y here,
2266 otherwise N. It is not possible to probe for this board, which means
2267 that you have to inform the kernel about the IO port and IRQ that
2268 is needed (you can do this via the io and irq parameters)
2269
2270 To compile this driver as a module, choose M here: the
2271 module will be called wdt.
2272
2273#
2274# PCI-based Watchdog Cards
2275#
2276
2277comment "PCI-based Watchdog Cards"
2278 depends on PCI
2279
2280config PCIPCWATCHDOG
2281 tristate "Berkshire Products PCI-PC Watchdog"
2282 depends on PCI && HAS_IOPORT
2283 help
2284 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2285 This card simply watches your kernel to make sure it doesn't freeze,
2286 and if it does, it reboots your computer after a certain amount of
2287 time. The card can also monitor the internal temperature of the PC.
2288 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2289
2290 To compile this driver as a module, choose M here: the
2291 module will be called pcwd_pci.
2292
2293 Most people will say N.
2294
2295config WDTPCI
2296 tristate "PCI-WDT500/501 Watchdog timer"
2297 depends on PCI && HAS_IOPORT
2298 help
2299 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2300
2301 If you have a PCI-WDT501 watchdog board then you can enable the
2302 temperature sensor by setting the type parameter to 501.
2303
2304 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2305 can do this via the tachometer parameter. Only do this if you have a
2306 fan tachometer actually set up.
2307
2308 To compile this driver as a module, choose M here: the
2309 module will be called wdt_pci.
2310
2311#
2312# USB-based Watchdog Cards
2313#
2314
2315comment "USB-based Watchdog Cards"
2316 depends on USB
2317
2318config USBPCWATCHDOG
2319 tristate "Berkshire Products USB-PC Watchdog"
2320 depends on USB
2321 help
2322 This is the driver for the Berkshire Products USB-PC Watchdog card.
2323 This card simply watches your kernel to make sure it doesn't freeze,
2324 and if it does, it reboots your computer after a certain amount of
2325 time. The card can also monitor the internal temperature of the PC.
2326 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2327
2328 To compile this driver as a module, choose M here: the
2329 module will be called pcwd_usb.
2330
2331 Most people will say N.
2332
2333config KEEMBAY_WATCHDOG
2334 tristate "Intel Keem Bay SoC non-secure watchdog"
2335 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2336 select WATCHDOG_CORE
2337 help
2338 This option enable support for an In-secure watchdog timer driver for
2339 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2340 count unit. An interrupt will be triggered, when the count crosses
2341 the threshold configured in the register.
2342
2343 To compile this driver as a module, choose M here: the
2344 module will be called keembay_wdt.
2345
2346endif # WATCHDOG