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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 \
97 WATCHDOG_PRETIMEOUT_GOV_NOOP=n && WATCHDOG_PRETIMEOUT_GOV_DUMP=n
98
99if WATCHDOG_PRETIMEOUT_GOV
100
101config WATCHDOG_PRETIMEOUT_GOV_DUMP
102 tristate "Dump watchdog pretimeout governor"
103 depends on WATCHDOG_CORE
104 default WATCHDOG_CORE
105 help
106 Dump watchdog pretimeout governor, all cpu backtrace is
107 added to kernel log buffer.
108
109config WATCHDOG_PRETIMEOUT_GOV_NOOP
110 tristate "Noop watchdog pretimeout governor"
111 depends on WATCHDOG_CORE
112 default WATCHDOG_CORE
113 help
114 Noop watchdog pretimeout governor, only an informational
115 message is added to kernel log buffer.
116
117config WATCHDOG_PRETIMEOUT_GOV_PANIC
118 tristate "Panic watchdog pretimeout governor"
119 depends on WATCHDOG_CORE
120 default WATCHDOG_CORE
121 help
122 Panic watchdog pretimeout governor, on watchdog pretimeout
123 event put the kernel into panic.
124
125choice
126 prompt "Default Watchdog Pretimeout Governor"
127 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
128 help
129 This option selects a default watchdog pretimeout governor.
130 The governor takes its action, if a watchdog is capable
131 to report a pretimeout event.
132
133config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_DUMP
134 bool "dump"
135 depends on WATCHDOG_PRETIMEOUT_GOV_DUMP
136 help
137 Use dump watchdog pretimeout governor by default. If dump
138 governor is selected by a user, dump all cpu backtrace to
139 the kernel log buffer and don't do any system changes.
140
141config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
142 bool "noop"
143 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
144 help
145 Use noop watchdog pretimeout governor by default. If noop
146 governor is selected by a user, write a short message to
147 the kernel log buffer and don't do any system changes.
148
149config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
150 bool "panic"
151 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
152 help
153 Use panic watchdog pretimeout governor by default, if
154 a watchdog pretimeout event happens, consider that
155 a watchdog feeder is dead and reboot is unavoidable.
156
157endchoice
158
159endif # WATCHDOG_PRETIMEOUT_GOV
160
161#
162# General Watchdog drivers
163#
164
165comment "Watchdog Device Drivers"
166
167# Architecture Independent
168
169config SOFT_WATCHDOG
170 tristate "Software watchdog"
171 select WATCHDOG_CORE
172 help
173 A software monitoring watchdog. This will fail to reboot your system
174 from some situations that the hardware watchdog will recover
175 from. Equally it's a lot cheaper to install.
176
177 To compile this driver as a module, choose M here: the
178 module will be called softdog.
179
180config SOFT_WATCHDOG_PRETIMEOUT
181 bool "Software watchdog pretimeout governor support"
182 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
183 help
184 Enable this if you want to use pretimeout governors with the software
185 watchdog. Be aware that governors might affect the watchdog because it
186 is purely software, e.g. the panic governor will stall it!
187
188config BD957XMUF_WATCHDOG
189 tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
190 depends on MFD_ROHM_BD957XMUF
191 select WATCHDOG_CORE
192 help
193 Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
194 These PMIC ICs contain watchdog block which can be configured
195 to toggle reset line if SoC fails to ping watchdog via GPIO.
196
197 Say Y here to include support for the ROHM BD9576 or BD9573
198 watchdog. Alternatively say M to compile the driver as a module,
199 which will be called bd9576_wdt.
200
201config BD96801_WATCHDOG
202 tristate "ROHM BD96801 PMIC Watchdog"
203 depends on MFD_ROHM_BD96801
204 select WATCHDOG_CORE
205 help
206 Support for the watchdog in the ROHM BD96801 PMIC. Watchdog can be
207 configured to only generate IRQ or to trigger system reset via reset
208 pin.
209
210 Say Y here to include support for the ROHM BD96801 watchdog.
211 Alternatively say M to compile the driver as a module,
212 which will be called bd96801_wdt.
213
214config CROS_EC_WATCHDOG
215 tristate "ChromeOS EC-based watchdog"
216 select WATCHDOG_CORE
217 depends on CROS_EC
218 help
219 Watchdog driver for Chromebook devices equipped with embedded controller.
220 Trigger event is recorded in EC and checked on the subsequent boot.
221
222 To compile this driver as a module, choose M here: the
223 module will be called cros_ec_wdt.
224
225config DA9052_WATCHDOG
226 tristate "Dialog DA9052 Watchdog"
227 depends on PMIC_DA9052 || COMPILE_TEST
228 select WATCHDOG_CORE
229 help
230 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
231 cause system reset.
232
233 Say Y here to include support for the DA9052 watchdog.
234 Alternatively say M to compile the driver as a module,
235 which will be called da9052_wdt.
236
237config DA9055_WATCHDOG
238 tristate "Dialog Semiconductor DA9055 Watchdog"
239 depends on MFD_DA9055 || COMPILE_TEST
240 select WATCHDOG_CORE
241 help
242 If you say yes here you get support for watchdog on the Dialog
243 Semiconductor DA9055 PMIC.
244
245 This driver can also be built as a module. If so, the module
246 will be called da9055_wdt.
247
248config DA9063_WATCHDOG
249 tristate "Dialog DA9063 Watchdog"
250 depends on MFD_DA9063 || COMPILE_TEST
251 depends on I2C
252 select WATCHDOG_CORE
253 help
254 Support for the watchdog in the DA9063 PMIC.
255
256 This driver can be built as a module. The module name is da9063_wdt.
257
258config DA9062_WATCHDOG
259 tristate "Dialog DA9062/61 Watchdog"
260 depends on MFD_DA9062 || COMPILE_TEST
261 depends on I2C
262 select WATCHDOG_CORE
263 help
264 Support for the watchdog in the DA9062 and DA9061 PMICs.
265
266 This driver can be built as a module. The module name is da9062_wdt.
267
268config GPIO_WATCHDOG
269 tristate "Watchdog device controlled through GPIO-line"
270 depends on GPIOLIB && (ACPI || OF)
271 select WATCHDOG_CORE
272 help
273 If you say yes here you get support for watchdog device
274 controlled through GPIO-line.
275
276config GPIO_WATCHDOG_ARCH_INITCALL
277 bool "Register the watchdog as early as possible"
278 depends on GPIO_WATCHDOG=y
279 help
280 In some situations, the default initcall level (module_init)
281 in not early enough in the boot process to avoid the watchdog
282 to be triggered.
283 If you say yes here, the initcall level would be raised to
284 arch_initcall.
285 If in doubt, say N.
286
287config LENOVO_SE10_WDT
288 tristate "Lenovo SE10 Watchdog"
289 depends on (X86 && DMI) || COMPILE_TEST
290 depends on HAS_IOPORT
291 select WATCHDOG_CORE
292 help
293 If you say yes here you get support for the watchdog
294 functionality for the Lenovo SE10 platform.
295
296 This driver can also be built as a module. If so, the module
297 will be called lenovo-se10-wdt.
298
299config LENOVO_SE30_WDT
300 tristate "Lenovo SE30 Watchdog"
301 depends on (X86 && DMI) || COMPILE_TEST
302 depends on HAS_IOPORT
303 select WATCHDOG_CORE
304 help
305 If you say yes here you get support for the watchdog
306 functionality for the Lenovo SE30 platform.
307
308 This driver can also be built as a module. If so, the module
309 will be called lenovo-se30-wdt.
310
311config LENOVO_SE30G2_SE60_WDT
312 tristate "Lenovo SE30 Gen 2, SE60 Watchdog"
313 depends on (X86 && DMI) || COMPILE_TEST
314 depends on HAS_IOPORT
315 select WATCHDOG_CORE
316 help
317 If you say yes here you get support for the watchdog
318 functionality for the Lenovo SE30 Gen2 and SE60 platforms.
319
320 This driver can also be built as a module. If so, the module
321 will be called lenovo-se30g2-se60-wdt.
322
323config MENF21BMC_WATCHDOG
324 tristate "MEN 14F021P00 BMC Watchdog"
325 depends on MFD_MENF21BMC || COMPILE_TEST
326 depends on I2C
327 select WATCHDOG_CORE
328 help
329 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
330
331 This driver can also be built as a module. If so the module
332 will be called menf21bmc_wdt.
333
334config MENZ069_WATCHDOG
335 tristate "MEN 16Z069 Watchdog"
336 depends on MCB
337 select WATCHDOG_CORE
338 help
339 Say Y here to include support for the MEN 16Z069 Watchdog.
340
341 This driver can also be built as a module. If so the module
342 will be called menz069_wdt.
343
344config WDAT_WDT
345 tristate "ACPI Watchdog Action Table (WDAT)"
346 depends on ACPI
347 select WATCHDOG_CORE
348 select ACPI_WATCHDOG
349 help
350 This driver adds support for systems with ACPI Watchdog Action
351 Table (WDAT) table. Servers typically have this but it can be
352 found on some desktop machines as well. This driver will take
353 over the native iTCO watchdog driver found on many Intel CPUs.
354
355 To compile this driver as module, choose M here: the module will
356 be called wdat_wdt.
357
358config WM831X_WATCHDOG
359 tristate "WM831x watchdog"
360 depends on MFD_WM831X
361 select WATCHDOG_CORE
362 help
363 Support for the watchdog in the WM831x AudioPlus PMICs. When
364 the watchdog triggers the system will be reset.
365
366config WM8350_WATCHDOG
367 tristate "WM8350 watchdog"
368 depends on MFD_WM8350
369 select WATCHDOG_CORE
370 help
371 Support for the watchdog in the WM8350 AudioPlus PMIC. When
372 the watchdog triggers the system will be reset.
373
374config XILINX_WATCHDOG
375 tristate "Xilinx Watchdog timer"
376 depends on HAS_IOMEM
377 select WATCHDOG_CORE
378 help
379 Watchdog driver for the xps_timebase_wdt IP core.
380
381 To compile this driver as a module, choose M here: the
382 module will be called of_xilinx_wdt.
383
384config XILINX_WINDOW_WATCHDOG
385 tristate "Xilinx window watchdog timer"
386 depends on HAS_IOMEM
387 depends on ARM64 || COMPILE_TEST
388 select WATCHDOG_CORE
389 help
390 Window watchdog driver for the versal_wwdt IP core.
391 Window watchdog timer(WWDT) contains closed(first) and
392 open(second) window with 32 bit width. Write to the watchdog
393 timer within predefined window periods of time. This means
394 a period that is not too soon and a period that is not too
395 late. The WWDT has to be restarted within the open window time.
396 If software tries to restart WWDT outside of the open window
397 time period, it generates a reset.
398
399 To compile this driver as a module, choose M here: the
400 module will be called xilinx_wwdt.
401
402config ZIIRAVE_WATCHDOG
403 tristate "Zodiac RAVE Watchdog Timer"
404 depends on I2C
405 select WATCHDOG_CORE
406 help
407 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
408 Processor.
409
410 To compile this driver as a module, choose M here: the
411 module will be called ziirave_wdt.
412
413config RAVE_SP_WATCHDOG
414 tristate "RAVE SP Watchdog timer"
415 depends on RAVE_SP_CORE
416 depends on NVMEM || !NVMEM
417 select WATCHDOG_CORE
418 help
419 Support for the watchdog on RAVE SP device.
420
421config MLX_WDT
422 tristate "Mellanox Watchdog"
423 depends on MELLANOX_PLATFORM || COMPILE_TEST
424 select WATCHDOG_CORE
425 select REGMAP
426 help
427 This is the driver for the hardware watchdog on Mellanox systems.
428 If you are going to use it, say Y here, otherwise N.
429 This driver can be used together with the watchdog daemon.
430 It can also watch your kernel to make sure it doesn't freeze,
431 and if it does, it reboots your system after a certain amount of
432 time.
433
434 To compile this driver as a module, choose M here: the
435 module will be called mlx-wdt.
436
437config SL28CPLD_WATCHDOG
438 tristate "Kontron sl28cpld Watchdog"
439 depends on MFD_SL28CPLD || COMPILE_TEST
440 select WATCHDOG_CORE
441 help
442 Say Y here to include support for the watchdog timer
443 on the Kontron sl28 CPLD.
444
445 To compile this driver as a module, choose M here: the
446 module will be called sl28cpld_wdt.
447
448# ALPHA Architecture
449
450# ARM Architecture
451
452config AIROHA_WATCHDOG
453 tristate "Airoha EN7581 Watchdog"
454 depends on ARCH_AIROHA || COMPILE_TEST
455 select WATCHDOG_CORE
456 help
457 Watchdog timer embedded into Airoha SoC. This will reboot your
458 system when the timeout is reached.
459
460config ARM_SP805_WATCHDOG
461 tristate "ARM SP805 Watchdog"
462 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
463 select WATCHDOG_CORE
464 help
465 ARM Primecell SP805 Watchdog timer. This will reboot your system when
466 the timeout is reached.
467
468config ARM_SBSA_WATCHDOG
469 tristate "ARM SBSA Generic Watchdog"
470 depends on ARM64
471 depends on ARM_ARCH_TIMER
472 select WATCHDOG_CORE
473 help
474 ARM SBSA Generic Watchdog has two stage timeouts:
475 the first signal (WS0) is for alerting the system by interrupt,
476 the second one (WS1) is a real hardware reset.
477 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
478
479 This driver can operate ARM SBSA Generic Watchdog as a single stage
480 or a two stages watchdog, it depends on the module parameter "action".
481
482 Note: the maximum timeout in the two stages mode is half of that in
483 the single stage mode.
484
485 To compile this driver as module, choose M here: The module
486 will be called sbsa_gwdt.
487
488config ARMADA_37XX_WATCHDOG
489 tristate "Armada 37xx watchdog"
490 depends on ARCH_MVEBU || COMPILE_TEST
491 depends on HAS_IOMEM
492 select MFD_SYSCON
493 select WATCHDOG_CORE
494 help
495 Say Y here to include support for the watchdog timer found on
496 Marvell Armada 37xx SoCs.
497 To compile this driver as a module, choose M here: the
498 module will be called armada_37xx_wdt.
499
500config ASM9260_WATCHDOG
501 tristate "Alphascale ASM9260 watchdog"
502 depends on MACH_ASM9260 || COMPILE_TEST
503 depends on OF
504 select WATCHDOG_CORE
505 select RESET_CONTROLLER
506 help
507 Watchdog timer embedded into Alphascale asm9260 chips. This will
508 reboot your system when the timeout is reached.
509
510config AT91RM9200_WATCHDOG
511 tristate "AT91RM9200 watchdog"
512 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
513 help
514 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
515 system when the timeout is reached.
516
517config AT91SAM9X_WATCHDOG
518 tristate "AT91SAM9X / AT91CAP9 watchdog"
519 depends on ARCH_AT91 || COMPILE_TEST
520 select WATCHDOG_CORE
521 help
522 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
523 reboot your system when the timeout is reached.
524
525config SAMA5D4_WATCHDOG
526 tristate "Atmel SAMA5D4 Watchdog Timer"
527 depends on ARCH_AT91 || COMPILE_TEST
528 select WATCHDOG_CORE
529 help
530 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
531 Its Watchdog Timer Mode Register can be written more than once.
532 This will reboot your system when the timeout is reached.
533
534config CADENCE_WATCHDOG
535 tristate "Cadence Watchdog Timer"
536 depends on HAS_IOMEM
537 select WATCHDOG_CORE
538 help
539 Say Y here if you want to include support for the watchdog
540 timer in the Xilinx Zynq.
541
542config 21285_WATCHDOG
543 tristate "DC21285 watchdog"
544 depends on FOOTBRIDGE
545 help
546 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
547 here if you wish to use this. Alternatively say M to compile the
548 driver as a module, which will be called wdt285.
549
550 This driver does not work on all machines. In particular, early CATS
551 boards have hardware problems that will cause the machine to simply
552 lock up if the watchdog fires.
553
554 "If in doubt, leave it out" - say N.
555
556config 977_WATCHDOG
557 tristate "NetWinder WB83C977 watchdog"
558 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
559 depends on HAS_IOPORT
560 help
561 Say Y here to include support for the WB977 watchdog included in
562 NetWinder machines. Alternatively say M to compile the driver as
563 a module, which will be called wdt977.
564
565 Not sure? It's safe to say N.
566
567config FTWDT010_WATCHDOG
568 tristate "Faraday Technology FTWDT010 watchdog"
569 depends on ARM || COMPILE_TEST
570 select WATCHDOG_CORE
571 default ARCH_GEMINI
572 help
573 Say Y here if to include support for the Faraday Technology
574 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
575 family of devices.
576
577 To compile this driver as a module, choose M here: the
578 module will be called ftwdt010_wdt.
579
580config IXP4XX_WATCHDOG
581 tristate "IXP4xx Watchdog"
582 depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
583 select WATCHDOG_CORE
584 help
585 Say Y here if to include support for the watchdog timer
586 in the Intel IXP4xx network processors. This driver can
587 be built as a module by choosing M. The module will
588 be called ixp4xx_wdt.
589
590 Note: The internal IXP4xx watchdog does a soft CPU reset
591 which doesn't reset any peripherals. There are circumstances
592 where the watchdog will fail to reset the board correctly
593 (e.g., if the boot ROM is in an unreadable state).
594
595 Say N if you are unsure.
596
597config S3C2410_WATCHDOG
598 tristate "S3C6410/S5Pv210/Exynos Watchdog"
599 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
600 select WATCHDOG_CORE
601 select MFD_SYSCON if ARCH_EXYNOS
602 help
603 Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
604 SoCs. This will reboot the system when the timer expires with
605 the watchdog enabled.
606
607 The driver is limited by the speed of the system's PCLK
608 signal, so with reasonably fast systems (PCLK around 50-66MHz)
609 then watchdog intervals of over approximately 20seconds are
610 unavailable.
611
612 Choose Y/M here only if you build for such Samsung SoC.
613 The driver can be built as a module by choosing M, and will
614 be called s3c2410_wdt.
615
616config SA1100_WATCHDOG
617 tristate "SA1100/PXA2xx watchdog"
618 depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
619 help
620 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
621 reboot your system when timeout is reached.
622
623 NOTE: once enabled, this timer cannot be disabled.
624
625 To compile this driver as a module, choose M here: the
626 module will be called sa1100_wdt.
627
628config DW_WATCHDOG
629 tristate "Synopsys DesignWare watchdog"
630 depends on HAS_IOMEM
631 select WATCHDOG_CORE
632 help
633 Say Y here if to include support for the Synopsys DesignWare
634 watchdog timer found in many chips.
635 To compile this driver as a module, choose M here: the
636 module will be called dw_wdt.
637
638config EP93XX_WATCHDOG
639 tristate "EP93xx Watchdog"
640 depends on ARCH_EP93XX || COMPILE_TEST
641 select WATCHDOG_CORE
642 help
643 Say Y here if to include support for the watchdog timer
644 embedded in the Cirrus Logic EP93xx family of devices.
645
646 To compile this driver as a module, choose M here: the
647 module will be called ep93xx_wdt.
648
649config OMAP_WATCHDOG
650 tristate "OMAP Watchdog"
651 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
652 select WATCHDOG_CORE
653 help
654 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
655 Say 'Y' here to enable the
656 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
657
658config PNX4008_WATCHDOG
659 tristate "LPC32XX Watchdog"
660 depends on ARCH_LPC32XX || COMPILE_TEST
661 select WATCHDOG_CORE
662 help
663 Say Y here if to include support for the watchdog timer
664 in the LPC32XX processor.
665 This driver can be built as a module by choosing M. The module
666 will be called pnx4008_wdt.
667
668 Say N if you are unsure.
669
670config DAVINCI_WATCHDOG
671 tristate "DaVinci watchdog"
672 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
673 select WATCHDOG_CORE
674 help
675 Say Y here if to include support for the watchdog timer
676 in the DaVinci DM644x/DM646x or Keystone processors.
677 To compile this driver as a module, choose M here: the
678 module will be called davinci_wdt.
679
680 NOTE: once enabled, this timer cannot be disabled.
681 Say N if you are unsure.
682
683config K3_RTI_WATCHDOG
684 tristate "Texas Instruments K3 RTI watchdog"
685 depends on ARCH_K3 || COMPILE_TEST
686 select WATCHDOG_CORE
687 help
688 Say Y here if you want to include support for the K3 watchdog
689 timer (RTI module) available in the K3 generation of processors.
690
691config ORION_WATCHDOG
692 tristate "Orion watchdog"
693 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
694 depends on ARM
695 select WATCHDOG_CORE
696 help
697 Say Y here if to include support for the watchdog timer
698 in the Marvell Orion5x and Kirkwood ARM SoCs.
699 To compile this driver as a module, choose M here: the
700 module will be called orion_wdt.
701
702config RN5T618_WATCHDOG
703 tristate "Ricoh RN5T618 watchdog"
704 depends on MFD_RN5T618 || COMPILE_TEST
705 select WATCHDOG_CORE
706 help
707 If you say yes here you get support for watchdog on the Ricoh
708 RN5T618 PMIC.
709
710 This driver can also be built as a module. If so, the module
711 will be called rn5t618_wdt.
712
713config SUNXI_WATCHDOG
714 tristate "Allwinner SoCs watchdog support"
715 depends on ARCH_SUNXI || COMPILE_TEST
716 select WATCHDOG_CORE
717 help
718 Say Y here to include support for the watchdog timer
719 in Allwinner SoCs.
720 To compile this driver as a module, choose M here: the
721 module will be called sunxi_wdt.
722
723config NPCM7XX_WATCHDOG
724 tristate "Nuvoton NPCM750 watchdog"
725 depends on ARCH_NPCM || COMPILE_TEST
726 default y if ARCH_NPCM7XX
727 select WATCHDOG_CORE
728 help
729 Say Y here to include Watchdog timer support for the
730 watchdog embedded into the NPCM7xx.
731 This watchdog is used to reset the system and thus cannot be
732 compiled as a module.
733
734config TWL4030_WATCHDOG
735 tristate "TWL4030 Watchdog"
736 depends on TWL4030_CORE
737 select WATCHDOG_CORE
738 help
739 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
740 watchdog timer support for TWL4030 chips.
741
742config STMP3XXX_RTC_WATCHDOG
743 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
744 depends on RTC_DRV_STMP || COMPILE_TEST
745 select WATCHDOG_CORE
746 help
747 Say Y here to include support for the watchdog timer inside
748 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
749 To compile this driver as a module, choose M here: the
750 module will be called stmp3xxx_rtc_wdt.
751
752config MA35D1_WDT
753 tristate "Nuvoton MA35D1 Watchdog Timer"
754 depends on ARCH_MA35 || COMPILE_TEST
755 select WATCHDOG_CORE
756 help
757 Say Y here to include support for the watchdog timer
758 for the Nuvoton MA35D1 series microprocessor.
759 To compile this driver as a module, choose M here: the
760 module will be called ma35d1_wdt.
761
762config TS4800_WATCHDOG
763 tristate "TS-4800 Watchdog"
764 depends on HAS_IOMEM && OF
765 depends on SOC_IMX51 || COMPILE_TEST
766 select WATCHDOG_CORE
767 select MFD_SYSCON
768 help
769 Technologic Systems TS-4800 has watchdog timer implemented in
770 an external FPGA. Say Y here if you want to support for the
771 watchdog timer on TS-4800 board.
772
773config TS72XX_WATCHDOG
774 tristate "TS-72XX SBC Watchdog"
775 depends on MACH_TS72XX || COMPILE_TEST
776 select WATCHDOG_CORE
777 help
778 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
779 watchdog timer implemented in a external CPLD chip. Say Y here
780 if you want to support for the watchdog timer on TS-72XX boards.
781
782 To compile this driver as a module, choose M here: the
783 module will be called ts72xx_wdt.
784
785config MAX63XX_WATCHDOG
786 tristate "Max63xx watchdog"
787 depends on HAS_IOMEM
788 select WATCHDOG_CORE
789 help
790 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
791
792config MAX77620_WATCHDOG
793 tristate "Maxim Max77620 Watchdog Timer"
794 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
795 select WATCHDOG_CORE
796 help
797 This is the driver for the Max77620 watchdog timer.
798 Say 'Y' here to enable the watchdog timer support for
799 MAX77620 chips. To compile this driver as a module,
800 choose M here: the module will be called max77620_wdt.
801
802config NCT6694_WATCHDOG
803 tristate "Nuvoton NCT6694 watchdog support"
804 depends on MFD_NCT6694
805 select WATCHDOG_CORE
806 help
807 Say Y here to support Nuvoton NCT6694 watchdog timer
808 functionality.
809
810 This driver can also be built as a module. If so, the module
811 will be called nct6694_wdt.
812
813config IMX2_WDT
814 tristate "IMX2+ Watchdog"
815 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
816 select REGMAP_MMIO
817 select WATCHDOG_CORE
818 help
819 This is the driver for the hardware watchdog
820 on the Freescale IMX2 and later processors.
821 If you have one of these processors and wish to have
822 watchdog support enabled, say Y, otherwise say N.
823
824 To compile this driver as a module, choose M here: the
825 module will be called imx2_wdt.
826
827config IMX_SC_WDT
828 tristate "IMX SC Watchdog"
829 depends on HAVE_ARM_SMCCC
830 depends on IMX_SCU || COMPILE_TEST
831 select WATCHDOG_CORE
832 help
833 This is the driver for the system controller watchdog
834 on the NXP i.MX SoCs with system controller inside, the
835 watchdog driver will call ARM SMC API and trap into
836 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
837 will request system controller to execute the operations.
838 If you have one of these processors and wish to have
839 watchdog support enabled, say Y, otherwise say N.
840
841 To compile this driver as a module, choose M here: the
842 module will be called imx_sc_wdt.
843
844config IMX7ULP_WDT
845 tristate "IMX7ULP Watchdog"
846 depends on ARCH_MXC || COMPILE_TEST
847 select WATCHDOG_CORE
848 help
849 This is the driver for the hardware watchdog on the Freescale
850 IMX7ULP and later processors. If you have one of these
851 processors and wish to have watchdog support enabled,
852 say Y, otherwise say N.
853
854 To compile this driver as a module, choose M here: the
855 module will be called imx7ulp_wdt.
856
857config S32G_WDT
858 tristate "S32G Watchdog"
859 depends on ARCH_S32 || COMPILE_TEST
860 select WATCHDOG_CORE
861 help
862 This is the driver for the hardware watchdog on the NXP
863 S32G platforms. If you wish to have watchdog support
864 enabled, say Y, otherwise say N.
865
866config DB500_WATCHDOG
867 tristate "ST-Ericsson DB800 watchdog"
868 depends on MFD_DB8500_PRCMU
869 select WATCHDOG_CORE
870 default y
871 help
872 Say Y here to include Watchdog timer support for the watchdog
873 existing in the prcmu of ST-Ericsson DB8500 platform.
874
875 To compile this driver as a module, choose M here: the
876 module will be called db500_wdt.
877
878config RETU_WATCHDOG
879 tristate "Retu watchdog"
880 depends on MFD_RETU
881 select WATCHDOG_CORE
882 help
883 Retu watchdog driver for Nokia Internet Tablets (770, N800,
884 N810). At least on N800 the watchdog cannot be disabled, so
885 this driver is essential and you should enable it.
886
887 To compile this driver as a module, choose M here: the
888 module will be called retu_wdt.
889
890config MOXART_WDT
891 tristate "MOXART watchdog"
892 depends on ARCH_MOXART || COMPILE_TEST
893 help
894 Say Y here to include Watchdog timer support for the watchdog
895 existing on the MOXA ART SoC series platforms.
896
897 To compile this driver as a module, choose M here: the
898 module will be called moxart_wdt.
899
900config ST_LPC_WATCHDOG
901 tristate "STMicroelectronics LPC Watchdog"
902 depends on ARCH_STI || COMPILE_TEST
903 depends on OF
904 select WATCHDOG_CORE
905 help
906 Say Y here to include STMicroelectronics Low Power Controller
907 (LPC) based Watchdog timer support.
908
909 To compile this driver as a module, choose M here: the
910 module will be called st_lpc_wdt.
911
912config TEGRA_WATCHDOG
913 tristate "Tegra watchdog"
914 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
915 select WATCHDOG_CORE
916 help
917 Say Y here to include support for the watchdog timer
918 embedded in NVIDIA Tegra SoCs.
919
920 To compile this driver as a module, choose M here: the
921 module will be called tegra_wdt.
922
923config QCOM_WDT
924 tristate "Qualcomm watchdog"
925 depends on HAS_IOMEM
926 depends on ARCH_QCOM || COMPILE_TEST
927 select WATCHDOG_CORE
928 help
929 Say Y here to include Watchdog timer support for the watchdog found
930 on QCOM chipsets. Currently supported targets are the MSM8960,
931 APQ8064, and IPQ8064.
932
933 To compile this driver as a module, choose M here: the
934 module will be called qcom_wdt.
935
936config MESON_GXBB_WATCHDOG
937 tristate "Amlogic Meson GXBB SoCs watchdog support"
938 depends on ARCH_MESON || COMPILE_TEST
939 select WATCHDOG_CORE
940 help
941 Say Y here to include support for the watchdog timer
942 in Amlogic Meson GXBB SoCs.
943 To compile this driver as a module, choose M here: the
944 module will be called meson_gxbb_wdt.
945
946config MESON_WATCHDOG
947 tristate "Amlogic Meson SoCs watchdog support"
948 depends on ARCH_MESON || COMPILE_TEST
949 select WATCHDOG_CORE
950 help
951 Say Y here to include support for the watchdog timer
952 in Amlogic Meson SoCs.
953 To compile this driver as a module, choose M here: the
954 module will be called meson_wdt.
955
956config MEDIATEK_WATCHDOG
957 tristate "Mediatek SoCs watchdog support"
958 depends on ARCH_MEDIATEK || COMPILE_TEST
959 default ARCH_MEDIATEK
960 select WATCHDOG_CORE
961 select RESET_CONTROLLER
962 help
963 Say Y here to include support for the watchdog timer
964 in Mediatek SoCs.
965 To compile this driver as a module, choose M here: the
966 module will be called mtk_wdt.
967
968config DIGICOLOR_WATCHDOG
969 tristate "Conexant Digicolor SoCs watchdog support"
970 depends on ARCH_DIGICOLOR || COMPILE_TEST
971 select WATCHDOG_CORE
972 help
973 Say Y here to include support for the watchdog timer
974 in Conexant Digicolor SoCs.
975 To compile this driver as a module, choose M here: the
976 module will be called digicolor_wdt.
977
978config ARM_SMC_WATCHDOG
979 tristate "ARM Secure Monitor Call based watchdog support"
980 depends on ARM || ARM64
981 depends on OF
982 depends on HAVE_ARM_SMCCC
983 select WATCHDOG_CORE
984 help
985 Say Y here to include support for a watchdog timer
986 implemented by the EL3 Secure Monitor on ARM platforms.
987 Requires firmware support.
988 To compile this driver as a module, choose M here: the
989 module will be called arm_smc_wdt.
990
991config LPC18XX_WATCHDOG
992 tristate "LPC18xx/43xx Watchdog"
993 depends on ARCH_LPC18XX || COMPILE_TEST
994 depends on HAS_IOMEM
995 select WATCHDOG_CORE
996 help
997 Say Y here if to include support for the watchdog timer
998 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
999 processors.
1000 To compile this driver as a module, choose M here: the
1001 module will be called lpc18xx_wdt.
1002
1003config RENESAS_WDT
1004 tristate "Renesas WDT Watchdog"
1005 depends on ARCH_RENESAS || COMPILE_TEST
1006 select WATCHDOG_CORE
1007 help
1008 This driver adds watchdog support for the integrated watchdogs in the
1009 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
1010
1011config RENESAS_WWDT
1012 tristate "Renesas Window WWDT Watchdog"
1013 depends on ARCH_RENESAS || COMPILE_TEST
1014 select WATCHDOG_CORE
1015 help
1016 This driver adds watchdog support for a window timer found in some
1017 Renesas R-Car Gen3 and later SoCs.
1018
1019config RENESAS_RZAWDT
1020 tristate "Renesas RZ/A WDT Watchdog"
1021 depends on ARCH_RENESAS || COMPILE_TEST
1022 select WATCHDOG_CORE
1023 help
1024 This driver adds watchdog support for the integrated watchdogs in the
1025 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
1026
1027config RENESAS_RZN1WDT
1028 tristate "Renesas RZ/N1 watchdog"
1029 depends on ARCH_RENESAS || COMPILE_TEST
1030 select WATCHDOG_CORE
1031 help
1032 This driver adds watchdog support for the integrated watchdogs in the
1033 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
1034
1035config RENESAS_RZG2LWDT
1036 tristate "Renesas RZ/G2L WDT Watchdog"
1037 depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
1038 depends on PM || COMPILE_TEST
1039 select WATCHDOG_CORE
1040 help
1041 This driver adds watchdog support for the integrated watchdogs in the
1042 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
1043
1044config RENESAS_RZV2HWDT
1045 tristate "Renesas RZ/{G3E,V2H(P)} WDT Watchdog"
1046 depends on ARCH_RENESAS || COMPILE_TEST
1047 depends on PM || COMPILE_TEST
1048 select WATCHDOG_CORE
1049 help
1050 This driver adds watchdog support for the integrated watchdogs in the
1051 Renesas RZ/{G3E,V2H(P)} SoCs. These watchdogs can be used to reset a
1052 system.
1053
1054config ASPEED_WATCHDOG
1055 tristate "Aspeed BMC watchdog support"
1056 depends on ARCH_ASPEED || COMPILE_TEST
1057 select WATCHDOG_CORE
1058 help
1059 Say Y here to include support for the watchdog timer
1060 in Aspeed BMC SoCs.
1061
1062 This driver is required to reboot the SoC.
1063
1064 To compile this driver as a module, choose M here: the
1065 module will be called aspeed_wdt.
1066
1067config STM32_WATCHDOG
1068 tristate "STM32 Independent WatchDoG (IWDG) support"
1069 depends on ARCH_STM32 || COMPILE_TEST
1070 select WATCHDOG_CORE
1071 default ARCH_STM32
1072 help
1073 Say Y here to include support for the watchdog timer
1074 in stm32 SoCs.
1075
1076 To compile this driver as a module, choose M here: the
1077 module will be called stm32_iwdg.
1078
1079config STPMIC1_WATCHDOG
1080 tristate "STPMIC1 PMIC watchdog support"
1081 depends on MFD_STPMIC1
1082 select WATCHDOG_CORE
1083 help
1084 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
1085 If the watchdog timer expires, stpmic1 will shut down all its power
1086 supplies.
1087
1088 To compile this driver as a module, choose M here: the
1089 module will be called spmic1_wdt.
1090
1091config UNIPHIER_WATCHDOG
1092 tristate "UniPhier watchdog support"
1093 depends on ARCH_UNIPHIER || COMPILE_TEST
1094 depends on OF && MFD_SYSCON
1095 select WATCHDOG_CORE
1096 help
1097 Say Y here to include support watchdog timer embedded
1098 into the UniPhier system.
1099
1100 To compile this driver as a module, choose M here: the
1101 module will be called uniphier_wdt.
1102
1103config RTD119X_WATCHDOG
1104 bool "Realtek RTD119x/RTD129x watchdog support"
1105 depends on ARCH_REALTEK || COMPILE_TEST
1106 depends on OF
1107 select WATCHDOG_CORE
1108 default ARCH_REALTEK
1109 help
1110 Say Y here to include support for the watchdog timer in
1111 Realtek RTD1295 SoCs.
1112
1113config REALTEK_OTTO_WDT
1114 tristate "Realtek Otto MIPS watchdog support"
1115 depends on MACH_REALTEK_RTL || COMPILE_TEST
1116 depends on COMMON_CLK
1117 select WATCHDOG_CORE
1118 select REGMAP_MMIO
1119 default MACH_REALTEK_RTL
1120 help
1121 Say Y here to include support for the watchdog timer on Realtek
1122 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
1123 notifications and system reset on timeout.
1124
1125 When built as a module this will be called realtek_otto_wdt.
1126
1127config SPRD_WATCHDOG
1128 tristate "Spreadtrum watchdog support"
1129 depends on ARCH_SPRD || COMPILE_TEST
1130 select WATCHDOG_CORE
1131 help
1132 Say Y here to include watchdog timer supported
1133 by Spreadtrum system.
1134
1135config PM8916_WATCHDOG
1136 tristate "Qualcomm PM8916 pmic watchdog"
1137 depends on OF && MFD_SPMI_PMIC
1138 select WATCHDOG_CORE
1139 help
1140 Say Y here to include support watchdog timer embedded into the
1141 pm8916 module.
1142
1143config VISCONTI_WATCHDOG
1144 tristate "Toshiba Visconti series watchdog support"
1145 depends on ARCH_VISCONTI || COMPILE_TEST
1146 select WATCHDOG_CORE
1147 help
1148 Say Y here to include support for the watchdog timer in Toshiba
1149 Visconti SoCs.
1150
1151config MSC313E_WATCHDOG
1152 tristate "MStar MSC313e watchdog"
1153 depends on ARCH_MSTARV7 || COMPILE_TEST
1154 select WATCHDOG_CORE
1155 help
1156 Say Y here to include support for the Watchdog timer embedded
1157 into MStar MSC313e chips. This will reboot your system when the
1158 timeout is reached.
1159
1160 To compile this driver as a module, choose M here: the
1161 module will be called msc313e_wdt.
1162
1163config APPLE_WATCHDOG
1164 tristate "Apple SoC watchdog"
1165 depends on ARCH_APPLE || COMPILE_TEST
1166 select WATCHDOG_CORE
1167 help
1168 Say Y here to include support for the Watchdog found in Apple
1169 SoCs such as the M1. Next to the common watchdog features this
1170 driver is also required in order to reboot these SoCs.
1171
1172 To compile this driver as a module, choose M here: the
1173 module will be called apple_wdt.
1174
1175config SUNPLUS_WATCHDOG
1176 tristate "Sunplus watchdog support"
1177 depends on ARCH_SUNPLUS || COMPILE_TEST
1178 select WATCHDOG_CORE
1179 help
1180 Say Y here to include support for the watchdog timer
1181 in Sunplus SoCs.
1182
1183 To compile this driver as a module, choose M here: the
1184 module will be called sunplus_wdt.
1185
1186# X86 (i386 + ia64 + x86_64) Architecture
1187
1188config ACQUIRE_WDT
1189 tristate "Acquire SBC Watchdog Timer"
1190 depends on X86
1191 help
1192 This is the driver for the hardware watchdog on Single Board
1193 Computers produced by Acquire Inc (and others). This watchdog
1194 simply watches your kernel to make sure it doesn't freeze, and if
1195 it does, it reboots your computer after a certain amount of time.
1196
1197 To compile this driver as a module, choose M here: the
1198 module will be called acquirewdt.
1199
1200 Most people will say N.
1201
1202config ADVANTECH_WDT
1203 tristate "Advantech SBC Watchdog Timer"
1204 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1205 help
1206 If you are configuring a Linux kernel for the Advantech single-board
1207 computer, say `Y' here to support its built-in watchdog timer
1208 feature. More information can be found at
1209 <https://www.advantech.com.tw/products/>
1210
1211config ADVANTECH_EC_WDT
1212 tristate "Advantech Embedded Controller Watchdog Timer"
1213 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1214 select ISA_BUS_API
1215 select WATCHDOG_CORE
1216 help
1217 This driver supports Advantech products with ITE based Embedded Controller.
1218 It does not support Advantech products with other ECs or without EC.
1219
1220config ALIM1535_WDT
1221 tristate "ALi M1535 PMU Watchdog Timer"
1222 depends on (X86 || COMPILE_TEST) && PCI
1223 help
1224 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1225
1226 To compile this driver as a module, choose M here: the
1227 module will be called alim1535_wdt.
1228
1229 Most people will say N.
1230
1231config ALIM7101_WDT
1232 tristate "ALi M7101 PMU Computer Watchdog"
1233 depends on PCI
1234 help
1235 This is the driver for the hardware watchdog on the ALi M7101 PMU
1236 as used in the x86 Cobalt servers and also found in some
1237 SPARC Netra servers too.
1238
1239 To compile this driver as a module, choose M here: the
1240 module will be called alim7101_wdt.
1241
1242 Most people will say N.
1243
1244config CGBC_WDT
1245 tristate "Congatec Board Controller Watchdog Timer"
1246 depends on MFD_CGBC
1247 select WATCHDOG_CORE
1248 help
1249 Enables watchdog timer support for the Congatec Board Controller.
1250
1251 This driver can also be built as a module. If so, the module will be
1252 called cgbc_wdt.
1253
1254config EBC_C384_WDT
1255 tristate "WinSystems EBC-C384 Watchdog Timer"
1256 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1257 select ISA_BUS_API
1258 select WATCHDOG_CORE
1259 help
1260 Enables watchdog timer support for the watchdog timer on the
1261 WinSystems EBC-C384 motherboard. The timeout may be configured via
1262 the timeout module parameter.
1263
1264config EXAR_WDT
1265 tristate "Exar Watchdog Timer"
1266 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1267 select WATCHDOG_CORE
1268 help
1269 Enables watchdog timer support for the watchdog timer present
1270 in some Exar/MaxLinear UART chips like the XR28V38x.
1271
1272 To compile this driver as a module, choose M here: the
1273 module will be called exar_wdt.
1274
1275config F71808E_WDT
1276 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1277 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1278 select WATCHDOG_CORE
1279 help
1280 This is the driver for the hardware watchdog on the Fintek F71808E,
1281 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1282 F81866 Super I/O controllers.
1283
1284 You can compile this driver directly into the kernel, or use
1285 it as a module. The module will be called f71808e_wdt.
1286
1287config SP5100_TCO
1288 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1289 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1290 select WATCHDOG_CORE
1291 help
1292 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1293 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1294 the machine after its expiration. The expiration time can be
1295 configured with the "heartbeat" parameter.
1296
1297 To compile this driver as a module, choose M here: the
1298 module will be called sp5100_tco.
1299
1300config GEODE_WDT
1301 tristate "AMD Geode CS5535/CS5536 Watchdog"
1302 depends on CS5535_MFGPT
1303 help
1304 This driver enables a watchdog capability built into the
1305 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1306 processors. This watchdog watches your kernel to make sure
1307 it doesn't freeze, and if it does, it reboots your computer after
1308 a certain amount of time.
1309
1310 You can compile this driver directly into the kernel, or use
1311 it as a module. The module will be called geodewdt.
1312
1313config SBC_FITPC2_WATCHDOG
1314 tristate "Compulab SBC-FITPC2 watchdog"
1315 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1316 help
1317 This is the driver for the built-in watchdog timer on the fit-PC2,
1318 fit-PC2i, CM-iAM single-board computers made by Compulab.
1319
1320 It's possible to enable the watchdog timer either from BIOS (F2) or
1321 from booted Linux.
1322 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1323 operational range.
1324
1325 Entering BIOS setup temporarily disables watchdog operation regardless
1326 of current state, so system will not be restarted while user is in
1327 BIOS setup.
1328
1329 Once the watchdog is enabled the system will be restarted every
1330 "Watchdog Timer Value" period, so to prevent it user can restart or
1331 disable the watchdog.
1332
1333 To compile this driver as a module, choose M here: the
1334 module will be called sbc_fitpc2_wdt.
1335
1336 Most people will say N.
1337
1338config EUROTECH_WDT
1339 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1340 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1341 help
1342 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1343 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1344 information are at <http://www.eurotech.it/>.
1345
1346config IB700_WDT
1347 tristate "IB700 SBC Watchdog Timer"
1348 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1349 help
1350 This is the driver for the hardware watchdog on the IB700 Single
1351 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1352 watchdog simply watches your kernel to make sure it doesn't freeze,
1353 and if it does, it reboots your computer after a certain amount of time.
1354
1355 This driver is like the WDT501 driver but for slightly different
1356 hardware.
1357
1358 To compile this driver as a module, choose M here: the
1359 module will be called ib700wdt.
1360
1361 Most people will say N.
1362
1363config IBMASR
1364 tristate "IBM Automatic Server Restart"
1365 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1366 help
1367 This is the driver for the IBM Automatic Server Restart watchdog
1368 timer built-in into some eServer xSeries machines.
1369
1370 To compile this driver as a module, choose M here: the
1371 module will be called ibmasr.
1372
1373config WAFER_WDT
1374 tristate "ICP Single Board Computer Watchdog Timer"
1375 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1376 help
1377 This is a driver for the hardware watchdog on the ICP Single
1378 Board Computer. This driver is working on (at least) the following
1379 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1380
1381 To compile this driver as a module, choose M here: the
1382 module will be called wafer5823wdt.
1383
1384config I6300ESB_WDT
1385 tristate "Intel 6300ESB Timer/Watchdog"
1386 depends on PCI
1387 select WATCHDOG_CORE
1388 help
1389 Hardware driver for the watchdog timer built into the Intel
1390 6300ESB controller hub.
1391
1392 To compile this driver as a module, choose M here: the
1393 module will be called i6300esb.
1394
1395config IE6XX_WDT
1396 tristate "Intel Atom E6xx Watchdog"
1397 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1398 select WATCHDOG_CORE
1399 select MFD_CORE
1400 select LPC_SCH
1401 help
1402 Hardware driver for the watchdog timer built into the Intel
1403 Atom E6XX (TunnelCreek) processor.
1404
1405 To compile this driver as a module, choose M here: the
1406 module will be called ie6xx_wdt.
1407
1408config INTEL_MID_WATCHDOG
1409 tristate "Intel MID Watchdog Timer"
1410 depends on X86_INTEL_MID
1411 select WATCHDOG_CORE
1412 help
1413 Watchdog timer driver built into the Intel SCU for Intel MID
1414 Platforms.
1415
1416 This driver currently supports only the watchdog evolution
1417 implementation in SCU, available for Merrifield generation.
1418
1419 To compile this driver as a module, choose M here.
1420
1421config INTEL_OC_WATCHDOG
1422 tristate "Intel OC Watchdog"
1423 depends on (X86 || COMPILE_TEST) && ACPI && HAS_IOPORT
1424 select WATCHDOG_CORE
1425 help
1426 Hardware driver for Intel Over-Clocking watchdog present in
1427 Platform Controller Hub (PCH) chipsets.
1428
1429 To compile this driver as a module, choose M here: the
1430 module will be called intel_oc_wdt.
1431
1432config ITCO_WDT
1433 tristate "Intel TCO Timer/Watchdog"
1434 depends on X86 && PCI
1435 select WATCHDOG_CORE
1436 depends on I2C || I2C=n
1437 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1438 depends on HAS_IOPORT # for I2C_I801
1439 select LPC_ICH if !EXPERT
1440 select I2C_I801 if !EXPERT && I2C
1441 help
1442 Hardware driver for the intel TCO timer based watchdog devices.
1443 These drivers are included in the Intel 82801 I/O Controller
1444 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1445 controller hub.
1446
1447 The TCO (Total Cost of Ownership) timer is a watchdog timer
1448 that will reboot the machine after its second expiration. The
1449 expiration time can be configured with the "heartbeat" parameter.
1450
1451 On some motherboards the driver may fail to reset the chipset's
1452 NO_REBOOT flag which prevents the watchdog from rebooting the
1453 machine. If this is the case you will get a kernel message like
1454 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1455
1456 To compile this driver as a module, choose M here: the
1457 module will be called iTCO_wdt.
1458
1459config IT8712F_WDT
1460 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1461 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1462 help
1463 This is the driver for the built-in watchdog timer on the IT8712F
1464 Super I/0 chipset used on many motherboards.
1465
1466 If the driver does not work, then make sure that the game port in
1467 the BIOS is enabled.
1468
1469 To compile this driver as a module, choose M here: the
1470 module will be called it8712f_wdt.
1471
1472config IT87_WDT
1473 tristate "IT87 Watchdog Timer"
1474 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1475 select WATCHDOG_CORE
1476 help
1477 This is the driver for the hardware watchdog on the ITE IT8607,
1478 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1479 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1480 IT8783 Super I/O chips.
1481
1482 This watchdog simply watches your kernel to make sure it doesn't
1483 freeze, and if it does, it reboots your computer after a certain
1484 amount of time.
1485
1486 To compile this driver as a module, choose M here: the module will
1487 be called it87_wdt.
1488
1489config HP_WATCHDOG
1490 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1491 select WATCHDOG_CORE
1492 depends on (ARM64 || X86 || COMPILE_TEST) && PCI
1493 help
1494 A software monitoring watchdog and NMI handling driver. This driver
1495 will detect lockups and provide a stack trace. This is a driver that
1496 will only load on an HP ProLiant system with a minimum of iLO2 support.
1497 To compile this driver as a module, choose M here: the module will be
1498 called hpwdt.
1499
1500config HPWDT_NMI_DECODING
1501 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1502 depends on X86 && HP_WATCHDOG
1503 default y
1504 help
1505 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1506 "Generate NMI to System" virtual button. When an NMI is claimed
1507 by the driver, panic is called.
1508
1509config KEMPLD_WDT
1510 tristate "Kontron COM Watchdog Timer"
1511 depends on MFD_KEMPLD
1512 select WATCHDOG_CORE
1513 help
1514 Support for the PLD watchdog on some Kontron ETX and COMexpress
1515 (ETXexpress) modules
1516
1517 This driver can also be built as a module. If so, the module will be
1518 called kempld_wdt.
1519
1520config SC1200_WDT
1521 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1522 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1523 help
1524 This is a driver for National Semiconductor PC87307/PC97307 hardware
1525 watchdog cards as found on the SC1200. This watchdog is mainly used
1526 for power management purposes and can be used to power down the device
1527 during inactivity periods (includes interrupt activity monitoring).
1528
1529 To compile this driver as a module, choose M here: the
1530 module will be called sc1200wdt.
1531
1532 Most people will say N.
1533
1534config SCx200_WDT
1535 tristate "National Semiconductor SCx200 Watchdog"
1536 depends on SCx200 && PCI
1537 help
1538 Enable the built-in watchdog timer support on the National
1539 Semiconductor SCx200 processors.
1540
1541 If compiled as a module, it will be called scx200_wdt.
1542
1543config PC87413_WDT
1544 tristate "NS PC87413 watchdog"
1545 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1546 help
1547 This is the driver for the hardware watchdog on the PC87413 chipset
1548 This watchdog simply watches your kernel to make sure it doesn't
1549 freeze, and if it does, it reboots your computer after a certain
1550 amount of time.
1551
1552 To compile this driver as a module, choose M here: the
1553 module will be called pc87413_wdt.
1554
1555 Most people will say N.
1556
1557config NV_TCO
1558 tristate "nVidia TCO Timer/Watchdog"
1559 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1560 help
1561 Hardware driver for the TCO timer built into the nVidia Hub family
1562 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1563 watchdog timer that will reboot the machine after its second
1564 expiration. The expiration time can be configured with the
1565 "heartbeat" parameter.
1566
1567 On some motherboards the driver may fail to reset the chipset's
1568 NO_REBOOT flag which prevents the watchdog from rebooting the
1569 machine. If this is the case you will get a kernel message like
1570 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1571
1572 To compile this driver as a module, choose M here: the
1573 module will be called nv_tco.
1574
1575config RDC321X_WDT
1576 tristate "RDC R-321x SoC watchdog"
1577 depends on X86_32 || COMPILE_TEST
1578 depends on PCI
1579 help
1580 This is the driver for the built in hardware watchdog
1581 in the RDC R-321x SoC.
1582
1583 To compile this driver as a module, choose M here: the
1584 module will be called rdc321x_wdt.
1585
1586config 60XX_WDT
1587 tristate "SBC-60XX Watchdog Timer"
1588 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1589 help
1590 This driver can be used with the watchdog timer found on some
1591 single board computers, namely the 6010 PII based computer.
1592 It may well work with other cards. It reads port 0x443 to enable
1593 and re-set the watchdog timer, and reads port 0x45 to disable
1594 the watchdog. If you have a card that behave in similar ways,
1595 you can probably make this driver work with your card as well.
1596
1597 You can compile this driver directly into the kernel, or use
1598 it as a module. The module will be called sbc60xxwdt.
1599
1600config SBC8360_WDT
1601 tristate "SBC8360 Watchdog Timer"
1602 depends on X86_32 && HAS_IOPORT
1603 help
1604
1605 This is the driver for the hardware watchdog on the SBC8360 Single
1606 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1607
1608 To compile this driver as a module, choose M here: the
1609 module will be called sbc8360.
1610
1611 Most people will say N.
1612
1613config SBC7240_WDT
1614 tristate "SBC Nano 7240 Watchdog Timer"
1615 depends on X86_32 && HAS_IOPORT
1616 help
1617 This is the driver for the hardware watchdog found on the IEI
1618 single board computers EPIC Nano 7240 (and likely others). This
1619 watchdog simply watches your kernel to make sure it doesn't freeze,
1620 and if it does, it reboots your computer after a certain amount of
1621 time.
1622
1623 To compile this driver as a module, choose M here: the
1624 module will be called sbc7240_wdt.
1625
1626config SMSC_SCH311X_WDT
1627 tristate "SMSC SCH311X Watchdog Timer"
1628 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1629 help
1630 This is the driver for the hardware watchdog timer on the
1631 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1632 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1633 serial ports).
1634
1635 To compile this driver as a module, choose M here: the
1636 module will be called sch311x_wdt.
1637
1638config SMSC37B787_WDT
1639 tristate "Winbond SMsC37B787 Watchdog Timer"
1640 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1641 help
1642 This is the driver for the hardware watchdog component on the
1643 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1644 from Vision Systems and maybe others.
1645
1646 This watchdog simply watches your kernel to make sure it doesn't
1647 freeze, and if it does, it reboots your computer after a certain
1648 amount of time.
1649
1650 Usually a userspace daemon will notify the kernel WDT driver that
1651 userspace is still alive, at regular intervals.
1652
1653 To compile this driver as a module, choose M here: the
1654 module will be called smsc37b787_wdt.
1655
1656 Most people will say N.
1657
1658config TQMX86_WDT
1659 tristate "TQ-Systems TQMX86 Watchdog Timer"
1660 depends on X86 || COMPILE_TEST
1661 select WATCHDOG_CORE
1662 help
1663 This is the driver for the hardware watchdog timer in the TQMX86 IO
1664 controller found on some of their ComExpress Modules.
1665
1666 To compile this driver as a module, choose M here; the module
1667 will be called tqmx86_wdt.
1668
1669 Most people will say N.
1670
1671config VIA_WDT
1672 tristate "VIA Watchdog Timer"
1673 depends on (X86 || COMPILE_TEST) && PCI
1674 select WATCHDOG_CORE
1675 help
1676 This is the driver for the hardware watchdog timer on VIA
1677 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1678
1679 To compile this driver as a module, choose M here; the module
1680 will be called via_wdt.
1681
1682 Most people will say N.
1683
1684config W83627HF_WDT
1685 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1686 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1687 select WATCHDOG_CORE
1688 help
1689 This is the driver for the hardware watchdog on the following
1690 Super I/O chips.
1691 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1692 W83637HF
1693 W83667HG/HG-B
1694 W83687THF
1695 W83697HF
1696 W83697UG
1697 NCT6775
1698 NCT6776
1699 NCT6779
1700 NCT6791
1701 NCT6792
1702 NCT6102D/04D/06D
1703 NCT6116D
1704
1705 This watchdog simply watches your kernel to make sure it doesn't
1706 freeze, and if it does, it reboots your computer after a certain
1707 amount of time.
1708
1709 To compile this driver as a module, choose M here: the
1710 module will be called w83627hf_wdt.
1711
1712 Most people will say N.
1713
1714config W83877F_WDT
1715 tristate "W83877F (EMACS) Watchdog Timer"
1716 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1717 help
1718 This is the driver for the hardware watchdog on the W83877F chipset
1719 as used in EMACS PC-104 motherboards (and likely others). This
1720 watchdog simply watches your kernel to make sure it doesn't freeze,
1721 and if it does, it reboots your computer after a certain amount of
1722 time.
1723
1724 To compile this driver as a module, choose M here: the
1725 module will be called w83877f_wdt.
1726
1727 Most people will say N.
1728
1729config W83977F_WDT
1730 tristate "W83977F (PCM-5335) Watchdog Timer"
1731 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1732 help
1733 This is the driver for the hardware watchdog on the W83977F I/O chip
1734 as used in AAEON's PCM-5335 SBC (and likely others). This
1735 watchdog simply watches your kernel to make sure it doesn't freeze,
1736 and if it does, it reboots your computer after a certain amount of
1737 time.
1738
1739 To compile this driver as a module, choose M here: the
1740 module will be called w83977f_wdt.
1741
1742config SBC_EPX_C3_WATCHDOG
1743 tristate "Winsystems SBC EPX-C3 watchdog"
1744 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1745 help
1746 This is the driver for the built-in watchdog timer on the EPX-C3
1747 Single-board computer made by Winsystems, Inc.
1748
1749 *Note*: This hardware watchdog is not probeable and thus there
1750 is no way to know if writing to its IO address will corrupt
1751 your system or have any real effect. The only way to be sure
1752 that this driver does what you want is to make sure you
1753 are running it on an EPX-C3 from Winsystems with the watchdog
1754 timer at IO address 0x1ee and 0x1ef. It will write to both those
1755 IO ports. Basically, the assumption is made that if you compile
1756 this driver into your kernel and/or load it as a module, that you
1757 know what you are doing and that you are in fact running on an
1758 EPX-C3 board!
1759
1760 To compile this driver as a module, choose M here: the
1761 module will be called sbc_epx_c3.
1762
1763config INTEL_MEI_WDT
1764 tristate "Intel MEI iAMT Watchdog"
1765 depends on INTEL_MEI && X86
1766 select WATCHDOG_CORE
1767 help
1768 A device driver for the Intel MEI iAMT watchdog.
1769
1770 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1771 Whenever the OS hangs or crashes, iAMT will send an event
1772 to any subscriber to this event. The watchdog doesn't reset the
1773 the platform.
1774
1775 To compile this driver as a module, choose M here:
1776 the module will be called mei_wdt.
1777
1778config NI903X_WDT
1779 tristate "NI 903x/913x Watchdog"
1780 depends on X86 && ACPI
1781 select WATCHDOG_CORE
1782 help
1783 This is the driver for the watchdog timer on the National Instruments
1784 903x/913x real-time controllers.
1785
1786 To compile this driver as a module, choose M here: the module will be
1787 called ni903x_wdt.
1788
1789config NIC7018_WDT
1790 tristate "NIC7018 Watchdog"
1791 depends on HAS_IOPORT
1792 depends on ACPI || COMPILE_TEST
1793 select WATCHDOG_CORE
1794 help
1795 Support for National Instruments NIC7018 Watchdog.
1796
1797 To compile this driver as a module, choose M here: the module will be
1798 called nic7018_wdt.
1799
1800config SIEMENS_SIMATIC_IPC_WDT
1801 tristate "Siemens Simatic IPC Watchdog"
1802 depends on SIEMENS_SIMATIC_IPC && PCI
1803 default y
1804 select WATCHDOG_CORE
1805 select P2SB if X86
1806 help
1807 This driver adds support for several watchdogs found in Industrial
1808 PCs from Siemens.
1809
1810 To compile this driver as a module, choose M here: the module will be
1811 called simatic-ipc-wdt.
1812
1813# M68K Architecture
1814
1815config M54xx_WATCHDOG
1816 tristate "MCF54xx watchdog support"
1817 depends on M548x
1818 help
1819 To compile this driver as a module, choose M here: the
1820 module will be called m54xx_wdt.
1821
1822# MicroBlaze Architecture
1823
1824# MIPS Architecture
1825
1826config ATH79_WDT
1827 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1828 depends on ATH79 || (ARM && COMPILE_TEST)
1829 help
1830 Hardware driver for the built-in watchdog timer on the Atheros
1831 AR71XX/AR724X/AR913X SoCs.
1832
1833config BCM47XX_WDT
1834 tristate "Broadcom BCM47xx Watchdog Timer"
1835 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1836 select WATCHDOG_CORE
1837 help
1838 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1839
1840config RC32434_WDT
1841 tristate "IDT RC32434 SoC Watchdog Timer"
1842 depends on MIKROTIK_RB532
1843 help
1844 Hardware driver for the IDT RC32434 SoC built-in
1845 watchdog timer.
1846
1847 To compile this driver as a module, choose M here: the
1848 module will be called rc32434_wdt.
1849
1850config INDYDOG
1851 tristate "Indy/I2 Hardware Watchdog"
1852 depends on SGI_HAS_INDYDOG
1853 help
1854 Hardware driver for the Indy's/I2's watchdog. This is a
1855 watchdog timer that will reboot the machine after a 60 second
1856 timer expired and no process has written to /dev/watchdog during
1857 that time.
1858
1859config JZ4740_WDT
1860 tristate "Ingenic jz4740 SoC hardware watchdog"
1861 depends on MIPS || COMPILE_TEST
1862 depends on COMMON_CLK
1863 select WATCHDOG_CORE
1864 select MFD_SYSCON
1865 help
1866 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1867
1868config WDT_MTX1
1869 tristate "MTX-1 Hardware Watchdog"
1870 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1871 help
1872 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1873 will reboot the machine after a 100 seconds timer expired.
1874
1875config SIBYTE_WDOG
1876 tristate "Sibyte SoC hardware watchdog"
1877 depends on CPU_SB1
1878 help
1879 Watchdog driver for the built in watchdog hardware in Sibyte
1880 SoC processors. There are apparently two watchdog timers
1881 on such processors; this driver supports only the first one,
1882 because currently Linux only supports exporting one watchdog
1883 to userspace.
1884
1885 To compile this driver as a loadable module, choose M here.
1886 The module will be called sb_wdog.
1887
1888config TXX9_WDT
1889 tristate "Toshiba TXx9 Watchdog Timer"
1890 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1891 select WATCHDOG_CORE
1892 help
1893 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1894
1895config OCTEON_WDT
1896 tristate "Cavium OCTEON SOC family Watchdog Timer"
1897 depends on CAVIUM_OCTEON_SOC
1898 default y
1899 select WATCHDOG_CORE
1900 select EXPORT_UASM if OCTEON_WDT = m
1901 help
1902 Hardware driver for OCTEON's on chip watchdog timer.
1903 Enables the watchdog for all cores running Linux. It
1904 installs a NMI handler and pokes the watchdog based on an
1905 interrupt. On first expiration of the watchdog, the
1906 interrupt handler pokes it. The second expiration causes an
1907 NMI that prints a message. The third expiration causes a
1908 global soft reset.
1909
1910 When userspace has /dev/watchdog open, no poking is done
1911 from the first interrupt, it is then only poked when the
1912 device is written.
1913
1914config MARVELL_GTI_WDT
1915 tristate "Marvell GTI Watchdog driver"
1916 depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
1917 default ARCH_THUNDER
1918 select WATCHDOG_CORE
1919 help
1920 Marvell GTI hardware supports watchdog timer. First timeout
1921 works as watchdog pretimeout and installed interrupt handler
1922 will be called on first timeout. Hardware can generate interrupt
1923 to SCP on second timeout but it is not enabled, so second
1924 timeout is ignored. If device poke does not happen then system
1925 will reboot on third timeout.
1926
1927config BCM2835_WDT
1928 tristate "Broadcom BCM2835 hardware watchdog"
1929 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1930 select WATCHDOG_CORE
1931 help
1932 Watchdog driver for the built in watchdog hardware in Broadcom
1933 BCM2835 SoC.
1934
1935 To compile this driver as a loadable module, choose M here.
1936 The module will be called bcm2835_wdt.
1937
1938config BCM_KONA_WDT
1939 tristate "BCM Kona Watchdog"
1940 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1941 select WATCHDOG_CORE
1942 help
1943 Support for the watchdog timer on the following Broadcom BCM281xx
1944 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1945 BCM28155 variants.
1946
1947 Say 'Y' or 'M' here to enable the driver. The module will be called
1948 bcm_kona_wdt.
1949
1950config BCM_KONA_WDT_DEBUG
1951 bool "DEBUGFS support for BCM Kona Watchdog"
1952 depends on BCM_KONA_WDT || COMPILE_TEST
1953 help
1954 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1955 access to the driver's internal data structures as well as watchdog
1956 timer hardware registres.
1957
1958 If in doubt, say 'N'.
1959
1960config BCM7038_WDT
1961 tristate "BCM63xx/BCM7038 Watchdog"
1962 select WATCHDOG_CORE
1963 depends on HAS_IOMEM
1964 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1965 help
1966 Watchdog driver for the built-in hardware in Broadcom 7038 and
1967 later SoCs used in set-top boxes. BCM7038 was made public
1968 during the 2004 CES, and since then, many Broadcom chips use this
1969 watchdog block, including some cable modem chips and DSL (63xx)
1970 chips.
1971
1972config IMGPDC_WDT
1973 tristate "Imagination Technologies PDC Watchdog Timer"
1974 depends on HAS_IOMEM
1975 depends on MIPS || COMPILE_TEST
1976 select WATCHDOG_CORE
1977 help
1978 Driver for Imagination Technologies PowerDown Controller
1979 Watchdog Timer.
1980
1981 To compile this driver as a loadable module, choose M here.
1982 The module will be called imgpdc_wdt.
1983
1984config LANTIQ_WDT
1985 tristate "Lantiq SoC watchdog"
1986 depends on LANTIQ
1987 select WATCHDOG_CORE
1988 help
1989 Hardware driver for the Lantiq SoC Watchdog Timer.
1990
1991config LOONGSON1_WDT
1992 tristate "Loongson1 SoC hardware watchdog"
1993 depends on MACH_LOONGSON32 || MACH_LOONGSON64 || COMPILE_TEST
1994 select WATCHDOG_CORE
1995 help
1996 Hardware driver for the Loongson family Watchdog Timer.
1997
1998config RALINK_WDT
1999 tristate "Ralink SoC watchdog"
2000 select WATCHDOG_CORE
2001 depends on RALINK
2002 help
2003 Hardware driver for the Ralink SoC Watchdog Timer.
2004
2005config GXP_WATCHDOG
2006 tristate "HPE GXP watchdog support"
2007 depends on ARCH_HPE_GXP || COMPILE_TEST
2008 select WATCHDOG_CORE
2009 help
2010 Say Y here to include support for the watchdog timer
2011 in HPE GXP SoCs.
2012
2013 To compile this driver as a module, choose M here.
2014 The module will be called gxp-wdt.
2015
2016config MT7621_WDT
2017 tristate "Mediatek SoC watchdog"
2018 select WATCHDOG_CORE
2019 select REGMAP_MMIO
2020 select MFD_SYSCON
2021 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
2022 help
2023 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
2024
2025config PIC32_WDT
2026 tristate "Microchip PIC32 hardware watchdog"
2027 select WATCHDOG_CORE
2028 depends on MACH_PIC32 || COMPILE_TEST
2029 help
2030 Watchdog driver for the built in watchdog hardware in a PIC32.
2031
2032 Configuration bits must be set appropriately for the watchdog to be
2033 controlled by this driver.
2034
2035 To compile this driver as a loadable module, choose M here.
2036 The module will be called pic32-wdt.
2037
2038config PIC32_DMT
2039 tristate "Microchip PIC32 Deadman Timer"
2040 select WATCHDOG_CORE
2041 depends on MACH_PIC32 || COMPILE_TEST
2042 help
2043 Watchdog driver for PIC32 instruction fetch counting timer. This
2044 specific timer is typically be used in mission critical and safety
2045 critical applications, where any single failure of the software
2046 functionality and sequencing must be detected.
2047
2048 To compile this driver as a loadable module, choose M here.
2049 The module will be called pic32-dmt.
2050
2051# PARISC Architecture
2052
2053# POWERPC Architecture
2054
2055config GEF_WDT
2056 tristate "GE Watchdog Timer"
2057 depends on GE_FPGA
2058 help
2059 Watchdog timer found in a number of GE single board computers.
2060
2061config MPC5200_WDT
2062 bool "MPC52xx Watchdog Timer"
2063 depends on PPC_MPC52xx || COMPILE_TEST
2064 help
2065 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
2066
2067config 8xxx_WDT
2068 tristate "MPC8xxx Platform Watchdog Timer"
2069 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
2070 select WATCHDOG_CORE
2071 help
2072 This driver is for a SoC level watchdog that exists on some
2073 Freescale PowerPC processors. So far this driver supports:
2074 - MPC8xx watchdogs
2075 - MPC83xx watchdogs
2076 - MPC86xx watchdogs
2077
2078 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
2079
2080config PIKA_WDT
2081 tristate "PIKA FPGA Watchdog"
2082 depends on WARP || (PPC64 && COMPILE_TEST)
2083 default WARP
2084 help
2085 This enables the watchdog in the PIKA FPGA. Currently used on
2086 the Warp platform.
2087
2088config BOOKE_WDT
2089 tristate "PowerPC Book-E Watchdog Timer"
2090 depends on BOOKE || 4xx
2091 select WATCHDOG_CORE
2092 help
2093 Watchdog driver for PowerPC Book-E chips, such as the Freescale
2094 MPC85xx SOCs and the IBM PowerPC 440.
2095
2096 Please see Documentation/watchdog/watchdog-api.rst for
2097 more information.
2098
2099config BOOKE_WDT_DEFAULT_TIMEOUT
2100 int "PowerPC Book-E Watchdog Timer Default Timeout"
2101 depends on BOOKE_WDT
2102 default 38 if PPC_E500
2103 range 0 63 if PPC_E500
2104 default 3 if !PPC_E500
2105 range 0 3 if !PPC_E500
2106 help
2107 Select the default watchdog timer period to be used by the PowerPC
2108 Book-E watchdog driver. A watchdog "event" occurs when the bit
2109 position represented by this number transitions from zero to one.
2110
2111 For Freescale Book-E processors, this is a number between 0 and 63.
2112 For other Book-E processors, this is a number between 0 and 3.
2113
2114 The value can be overridden by the wdt_period command-line parameter.
2115
2116config MEN_A21_WDT
2117 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
2118 select WATCHDOG_CORE
2119 depends on GPIOLIB || COMPILE_TEST
2120 help
2121 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
2122
2123 The driver can also be built as a module. If so, the module will be
2124 called mena21_wdt.
2125
2126 If unsure select N here.
2127
2128# PPC64 Architecture
2129
2130config PSERIES_WDT
2131 tristate "POWER Architecture Platform Watchdog Timer"
2132 depends on PPC_PSERIES
2133 select WATCHDOG_CORE
2134 help
2135 Driver for virtual watchdog timers provided by PAPR
2136 hypervisors (e.g. PowerVM, KVM).
2137
2138config WATCHDOG_RTAS
2139 tristate "RTAS watchdog"
2140 depends on PPC_RTAS
2141 help
2142 This driver adds watchdog support for the RTAS watchdog.
2143
2144 To compile this driver as a module, choose M here. The module
2145 will be called wdrtas.
2146
2147# RISC-V Architecture
2148
2149config ATCWDT200_WATCHDOG
2150 tristate "Andes ATCWDT200 Watchdog support"
2151 depends on ARCH_ANDES || COMPILE_TEST
2152 help
2153 Driver for the Andes ATCWDT200 watchdog timer. It provides access to
2154 programmable reset and interrupt counters with clock-source dependent
2155 timing. The driver automatically detects the supported IntTime bit-width
2156 and is fully integrated with the Linux Watchdog Framework.
2157
2158config STARFIVE_WATCHDOG
2159 tristate "StarFive Watchdog support"
2160 depends on ARCH_STARFIVE || COMPILE_TEST
2161 select WATCHDOG_CORE
2162 default ARCH_STARFIVE
2163 help
2164 Say Y here to support the watchdog of StarFive JH7100 and JH7110
2165 SoC. This driver can also be built as a module if choose M.
2166
2167# S390 Architecture
2168
2169config DIAG288_WATCHDOG
2170 tristate "System z diag288 Watchdog"
2171 depends on S390
2172 select WATCHDOG_CORE
2173 help
2174 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2175 provide a virtual watchdog timer to their guest that cause a
2176 user define Control Program command to be executed after a
2177 timeout.
2178 LPAR provides a very similar interface. This driver handles
2179 both.
2180
2181 To compile this driver as a module, choose M here. The module
2182 will be called diag288_wdt.
2183
2184# SUPERH (sh + sh64) Architecture
2185
2186config SH_WDT
2187 tristate "SuperH Watchdog"
2188 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2189 select WATCHDOG_CORE
2190 help
2191 This driver adds watchdog support for the integrated watchdog in the
2192 SuperH processors. If you have one of these processors and wish
2193 to have watchdog support enabled, say Y, otherwise say N.
2194
2195 As a side note, saying Y here will automatically boost HZ to 1000
2196 so that the timer has a chance to clear the overflow counter. On
2197 slower systems (such as the SH-2 and SH-3) this will likely yield
2198 some performance issues. As such, the WDT should be avoided here
2199 unless it is absolutely necessary.
2200
2201 To compile this driver as a module, choose M here: the
2202 module will be called shwdt.
2203
2204# SPARC Architecture
2205
2206# SPARC64 Architecture
2207
2208config WATCHDOG_CP1XXX
2209 tristate "CP1XXX Hardware Watchdog support"
2210 depends on SPARC64 && PCI
2211 help
2212 This is the driver for the hardware watchdog timers present on
2213 Sun Microsystems CompactPCI models CP1400 and CP1500.
2214
2215 To compile this driver as a module, choose M here: the
2216 module will be called cpwatchdog.
2217
2218 If you do not have a CompactPCI model CP1400 or CP1500, or
2219 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2220 you should say N to this option.
2221
2222config WATCHDOG_RIO
2223 tristate "RIO Hardware Watchdog support"
2224 depends on SPARC64 && PCI
2225 help
2226 Say Y here to support the hardware watchdog capability on Sun RIO
2227 machines. The watchdog timeout period is normally one minute but
2228 can be changed with a boot-time parameter.
2229
2230config WATCHDOG_SUN4V
2231 tristate "Sun4v Watchdog support"
2232 select WATCHDOG_CORE
2233 depends on SPARC64
2234 help
2235 Say Y here to support the hypervisor watchdog capability embedded
2236 in the SPARC sun4v architecture.
2237
2238 To compile this driver as a module, choose M here. The module will
2239 be called sun4v_wdt.
2240
2241# XTENSA Architecture
2242
2243# Xen Architecture
2244
2245config XEN_WDT
2246 tristate "Xen Watchdog support"
2247 depends on XEN
2248 select WATCHDOG_CORE
2249 help
2250 Say Y here to support the hypervisor watchdog capability provided
2251 by Xen 4.0 and newer. The watchdog timeout period is normally one
2252 minute but can be changed with a boot-time parameter.
2253
2254config UML_WATCHDOG
2255 tristate "UML watchdog"
2256 depends on UML || COMPILE_TEST
2257
2258#
2259# ISA-based Watchdog Cards
2260#
2261
2262comment "ISA-based Watchdog Cards"
2263 depends on ISA
2264
2265config PCWATCHDOG
2266 tristate "Berkshire Products ISA-PC Watchdog"
2267 depends on ISA
2268 help
2269 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2270 This card simply watches your kernel to make sure it doesn't freeze,
2271 and if it does, it reboots your computer after a certain amount of
2272 time. This driver is like the WDT501 driver but for different
2273 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2274 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2275
2276 To compile this driver as a module, choose M here: the
2277 module will be called pcwd.
2278
2279 Most people will say N.
2280
2281config MIXCOMWD
2282 tristate "Mixcom Watchdog"
2283 depends on ISA
2284 help
2285 This is a driver for the Mixcom hardware watchdog cards. This
2286 watchdog simply watches your kernel to make sure it doesn't freeze,
2287 and if it does, it reboots your computer after a certain amount of
2288 time.
2289
2290 To compile this driver as a module, choose M here: the
2291 module will be called mixcomwd.
2292
2293 Most people will say N.
2294
2295config WDT
2296 tristate "ICS WDT500P/501P Watchdog timer"
2297 depends on ISA
2298 help
2299 If you have an Industrial Computer Source (ICS) WDT500P or WDT501P
2300 watchdog board, say Y here,
2301 otherwise N. It is not possible to probe for this board, which means
2302 that you have to inform the kernel about the IO port and IRQ that
2303 is needed (you can do this via the io and irq parameters)
2304
2305 To compile this driver as a module, choose M here: the
2306 module will be called wdt.
2307
2308#
2309# PCI-based Watchdog Cards
2310#
2311
2312comment "PCI-based Watchdog Cards"
2313 depends on PCI
2314
2315config PCIPCWATCHDOG
2316 tristate "Berkshire Products PCI-PC Watchdog"
2317 depends on PCI && HAS_IOPORT
2318 help
2319 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2320 This card simply watches your kernel to make sure it doesn't freeze,
2321 and if it does, it reboots your computer after a certain amount of
2322 time. The card can also monitor the internal temperature of the PC.
2323 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2324
2325 To compile this driver as a module, choose M here: the
2326 module will be called pcwd_pci.
2327
2328 Most people will say N.
2329
2330config WDTPCI
2331 tristate "ICS PCI-WDT500/501 Watchdog timer"
2332 depends on PCI && HAS_IOPORT
2333 help
2334 If you have an Industrial Computer Source (ICS) PCI-WDT500/501 watchdog
2335 board, say Y here, otherwise N.
2336
2337 If you have a PCI-WDT501 watchdog board then you can enable the
2338 temperature sensor by setting the type parameter to 501.
2339
2340 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2341 can do this via the tachometer parameter. Only do this if you have a
2342 fan tachometer actually set up.
2343
2344 To compile this driver as a module, choose M here: the
2345 module will be called wdt_pci.
2346
2347#
2348# USB-based Watchdog Cards
2349#
2350
2351comment "USB-based Watchdog Cards"
2352 depends on USB
2353
2354config USBPCWATCHDOG
2355 tristate "Berkshire Products USB-PC Watchdog"
2356 depends on USB
2357 help
2358 This is the driver for the Berkshire Products USB-PC Watchdog card.
2359 This card simply watches your kernel to make sure it doesn't freeze,
2360 and if it does, it reboots your computer after a certain amount of
2361 time. The card can also monitor the internal temperature of the PC.
2362 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2363
2364 To compile this driver as a module, choose M here: the
2365 module will be called pcwd_usb.
2366
2367 Most people will say N.
2368
2369config KEEMBAY_WATCHDOG
2370 tristate "Intel Keem Bay SoC non-secure watchdog"
2371 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2372 select WATCHDOG_CORE
2373 help
2374 This option enable support for an In-secure watchdog timer driver for
2375 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2376 count unit. An interrupt will be triggered, when the count crosses
2377 the threshold configured in the register.
2378
2379 To compile this driver as a module, choose M here: the
2380 module will be called keembay_wdt.
2381
2382config GUNYAH_WATCHDOG
2383 tristate "Qualcomm Gunyah Watchdog"
2384 depends on ARCH_QCOM || COMPILE_TEST
2385 depends on HAVE_ARM_SMCCC
2386 select WATCHDOG_CORE
2387 help
2388 Say Y here to include support for watchdog timer provided by the
2389 Gunyah hypervisor. The driver uses ARM SMC Calling Convention (SMCCC)
2390 to interact with Gunyah Watchdog.
2391
2392 To compile this driver as a module, choose M here: the
2393 module will be called gunyah_wdt.
2394
2395endif # WATCHDOG