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Linux/drivers/watchdog/Kconfig

  1 #
  2 # Watchdog device configuration
  3 #
  4 
  5 menuconfig WATCHDOG
  6         bool "Watchdog Timer Support"
  7         ---help---
  8           If you say Y here (and to one of the following options) and create a
  9           character special file /dev/watchdog with major number 10 and minor
 10           number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
 11           subsequently opening the file and then failing to write to it for
 12           longer than 1 minute will result in rebooting the machine. This
 13           could be useful for a networked machine that needs to come back
 14           on-line as fast as possible after a lock-up. There's both a watchdog
 15           implementation entirely in software (which can sometimes fail to
 16           reboot the machine) and a driver for hardware watchdog boards, which
 17           are more robust and can also keep track of the temperature inside
 18           your computer. For details, read
 19           <file:Documentation/watchdog/watchdog-api.txt> in the kernel source.
 20 
 21           The watchdog is usually used together with the watchdog daemon
 22           which is available from
 23           <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
 24           also monitor NFS connections and can reboot the machine when the process
 25           table is full.
 26 
 27           If unsure, say N.
 28 
 29 if WATCHDOG
 30 
 31 config WATCHDOG_CORE
 32         bool "WatchDog Timer Driver Core"
 33         ---help---
 34           Say Y here if you want to use the new watchdog timer driver core.
 35           This driver provides a framework for all watchdog timer drivers
 36           and gives them the /dev/watchdog interface (and later also the
 37           sysfs interface).
 38 
 39 config WATCHDOG_NOWAYOUT
 40         bool "Disable watchdog shutdown on close"
 41         help
 42           The default watchdog behaviour (which you get if you say N here) is
 43           to stop the timer if the process managing it closes the file
 44           /dev/watchdog. It's always remotely possible that this process might
 45           get killed. If you say Y here, the watchdog cannot be stopped once
 46           it has been started.
 47 
 48 #
 49 # General Watchdog drivers
 50 #
 51 
 52 comment "Watchdog Device Drivers"
 53 
 54 # Architecture Independent
 55 
 56 config SOFT_WATCHDOG
 57         tristate "Software watchdog"
 58         select WATCHDOG_CORE
 59         help
 60           A software monitoring watchdog. This will fail to reboot your system
 61           from some situations that the hardware watchdog will recover
 62           from. Equally it's a lot cheaper to install.
 63 
 64           To compile this driver as a module, choose M here: the
 65           module will be called softdog.
 66 
 67 config DA9052_WATCHDOG
 68         tristate "Dialog DA9052 Watchdog"
 69         depends on PMIC_DA9052
 70         select WATCHDOG_CORE
 71         help
 72           Support for the watchdog in the DA9052 PMIC. Watchdog trigger
 73           cause system reset.
 74 
 75           Say Y here to include support for the DA9052 watchdog.
 76           Alternatively say M to compile the driver as a module,
 77           which will be called da9052_wdt.
 78 
 79 config DA9055_WATCHDOG
 80         tristate "Dialog Semiconductor DA9055 Watchdog"
 81         depends on MFD_DA9055
 82         select WATCHDOG_CORE
 83         help
 84           If you say yes here you get support for watchdog on the Dialog
 85           Semiconductor DA9055 PMIC.
 86 
 87           This driver can also be built as a module.  If so, the module
 88           will be called da9055_wdt.
 89 
 90 config DA9063_WATCHDOG
 91         tristate "Dialog DA9063 Watchdog"
 92         depends on MFD_DA9063
 93         select WATCHDOG_CORE
 94         help
 95           Support for the watchdog in the DA9063 PMIC.
 96 
 97           This driver can be built as a module. The module name is da9063_wdt.
 98 
 99 config GPIO_WATCHDOG
100         tristate "Watchdog device controlled through GPIO-line"
101         depends on OF_GPIO
102         select WATCHDOG_CORE
103         help
104           If you say yes here you get support for watchdog device
105           controlled through GPIO-line.
106 
107 config MENF21BMC_WATCHDOG
108         tristate "MEN 14F021P00 BMC Watchdog"
109         depends on MFD_MENF21BMC
110         select WATCHDOG_CORE
111         help
112           Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
113 
114           This driver can also be built as a module. If so the module
115           will be called menf21bmc_wdt.
116 
117 config WM831X_WATCHDOG
118         tristate "WM831x watchdog"
119         depends on MFD_WM831X
120         select WATCHDOG_CORE
121         help
122           Support for the watchdog in the WM831x AudioPlus PMICs.  When
123           the watchdog triggers the system will be reset.
124 
125 config WM8350_WATCHDOG
126         tristate "WM8350 watchdog"
127         depends on MFD_WM8350
128         select WATCHDOG_CORE
129         help
130           Support for the watchdog in the WM8350 AudioPlus PMIC.  When
131           the watchdog triggers the system will be reset.
132 
133 config XILINX_WATCHDOG
134         tristate "Xilinx Watchdog timer"
135         depends on HAS_IOMEM
136         select WATCHDOG_CORE
137         help
138           Watchdog driver for the xps_timebase_wdt ip core.
139 
140           To compile this driver as a module, choose M here: the
141           module will be called of_xilinx_wdt.
142 
143 # ALPHA Architecture
144 
145 # ARM Architecture
146 
147 config ARM_SP805_WATCHDOG
148         tristate "ARM SP805 Watchdog"
149         depends on (ARM || ARM64) && ARM_AMBA
150         select WATCHDOG_CORE
151         help
152           ARM Primecell SP805 Watchdog timer. This will reboot your system when
153           the timeout is reached.
154 
155 config AT91RM9200_WATCHDOG
156         tristate "AT91RM9200 watchdog"
157         depends on ARCH_AT91RM9200
158         help
159           Watchdog timer embedded into AT91RM9200 chips. This will reboot your
160           system when the timeout is reached.
161 
162 config AT91SAM9X_WATCHDOG
163         tristate "AT91SAM9X / AT91CAP9 watchdog"
164         depends on ARCH_AT91 && !ARCH_AT91RM9200
165         select WATCHDOG_CORE
166         help
167           Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
168           reboot your system when the timeout is reached.
169 
170 config CADENCE_WATCHDOG
171         tristate "Cadence Watchdog Timer"
172         depends on ARM
173         select WATCHDOG_CORE
174         help
175           Say Y here if you want to include support for the watchdog
176           timer in the Xilinx Zynq.
177 
178 config 21285_WATCHDOG
179         tristate "DC21285 watchdog"
180         depends on FOOTBRIDGE
181         help
182           The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
183           here if you wish to use this. Alternatively say M to compile the
184           driver as a module, which will be called wdt285.
185 
186           This driver does not work on all machines. In particular, early CATS
187           boards have hardware problems that will cause the machine to simply
188           lock up if the watchdog fires.
189 
190           "If in doubt, leave it out" - say N.
191 
192 config 977_WATCHDOG
193         tristate "NetWinder WB83C977 watchdog"
194         depends on FOOTBRIDGE && ARCH_NETWINDER
195         help
196           Say Y here to include support for the WB977 watchdog included in
197           NetWinder machines. Alternatively say M to compile the driver as
198           a module, which will be called wdt977.
199 
200           Not sure? It's safe to say N.
201 
202 config IXP4XX_WATCHDOG
203         tristate "IXP4xx Watchdog"
204         depends on ARCH_IXP4XX
205         help
206           Say Y here if to include support for the watchdog timer
207           in the Intel IXP4xx network processors. This driver can
208           be built as a module by choosing M. The module will
209           be called ixp4xx_wdt.
210 
211           Note: The internal IXP4xx watchdog does a soft CPU reset
212           which doesn't reset any peripherals. There are circumstances
213           where the watchdog will fail to reset the board correctly
214           (e.g., if the boot ROM is in an unreadable state).
215 
216           Say N if you are unsure.
217 
218 config KS8695_WATCHDOG
219         tristate "KS8695 watchdog"
220         depends on ARCH_KS8695
221         help
222           Watchdog timer embedded into KS8695 processor. This will reboot your
223           system when the timeout is reached.
224 
225 config HAVE_S3C2410_WATCHDOG
226         bool
227         help
228           This will include watchdog timer support for Samsung SoCs. If
229           you want to include watchdog support for any machine, kindly
230           select this in the respective mach-XXXX/Kconfig file.
231 
232 config S3C2410_WATCHDOG
233         tristate "S3C2410 Watchdog"
234         depends on HAVE_S3C2410_WATCHDOG
235         select WATCHDOG_CORE
236         select MFD_SYSCON if ARCH_EXYNOS5
237         help
238           Watchdog timer block in the Samsung SoCs. This will reboot
239           the system when the timer expires with the watchdog enabled.
240 
241           The driver is limited by the speed of the system's PCLK
242           signal, so with reasonably fast systems (PCLK around 50-66MHz)
243           then watchdog intervals of over approximately 20seconds are
244           unavailable.
245 
246           The driver can be built as a module by choosing M, and will
247           be called s3c2410_wdt
248 
249 config SA1100_WATCHDOG
250         tristate "SA1100/PXA2xx watchdog"
251         depends on ARCH_SA1100 || ARCH_PXA
252         help
253           Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
254           reboot your system when timeout is reached.
255 
256           NOTE: once enabled, this timer cannot be disabled.
257 
258           To compile this driver as a module, choose M here: the
259           module will be called sa1100_wdt.
260 
261 config DW_WATCHDOG
262         tristate "Synopsys DesignWare watchdog"
263         depends on HAS_IOMEM
264         help
265           Say Y here if to include support for the Synopsys DesignWare
266           watchdog timer found in many chips.
267           To compile this driver as a module, choose M here: the
268           module will be called dw_wdt.
269 
270 config EP93XX_WATCHDOG
271         tristate "EP93xx Watchdog"
272         depends on ARCH_EP93XX
273         select WATCHDOG_CORE
274         help
275           Say Y here if to include support for the watchdog timer
276           embedded in the Cirrus Logic EP93xx family of devices.
277 
278           To compile this driver as a module, choose M here: the
279           module will be called ep93xx_wdt.
280 
281 config OMAP_WATCHDOG
282         tristate "OMAP Watchdog"
283         depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS
284         select WATCHDOG_CORE
285         help
286           Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.  Say 'Y'
287           here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
288 
289 config PNX4008_WATCHDOG
290         tristate "LPC32XX Watchdog"
291         depends on ARCH_LPC32XX
292         select WATCHDOG_CORE
293         help
294           Say Y here if to include support for the watchdog timer
295           in the LPC32XX processor.
296           This driver can be built as a module by choosing M. The module
297           will be called pnx4008_wdt.
298 
299           Say N if you are unsure.
300 
301 config IOP_WATCHDOG
302         tristate "IOP Watchdog"
303         depends on ARCH_IOP13XX
304         select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
305         help
306           Say Y here if to include support for the watchdog timer
307           in the Intel IOP3XX & IOP13XX I/O Processors.  This driver can
308           be built as a module by choosing M. The module will
309           be called iop_wdt.
310 
311           Note: The IOP13XX watchdog does an Internal Bus Reset which will
312           affect both cores and the peripherals of the IOP.  The ATU-X
313           and/or ATUe configuration registers will remain intact, but if
314           operating as an Root Complex and/or Central Resource, the PCI-X
315           and/or PCIe busses will also be reset.  THIS IS A VERY BIG HAMMER.
316 
317 config DAVINCI_WATCHDOG
318         tristate "DaVinci watchdog"
319         depends on ARCH_DAVINCI || ARCH_KEYSTONE
320         select WATCHDOG_CORE
321         help
322           Say Y here if to include support for the watchdog timer
323           in the DaVinci DM644x/DM646x or Keystone processors.
324           To compile this driver as a module, choose M here: the
325           module will be called davinci_wdt.
326 
327           NOTE: once enabled, this timer cannot be disabled.
328           Say N if you are unsure.
329 
330 config ORION_WATCHDOG
331         tristate "Orion watchdog"
332         depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU
333         select WATCHDOG_CORE
334         help
335           Say Y here if to include support for the watchdog timer
336           in the Marvell Orion5x and Kirkwood ARM SoCs.
337           To compile this driver as a module, choose M here: the
338           module will be called orion_wdt.
339 
340 config RN5T618_WATCHDOG
341         tristate "Ricoh RN5T618 watchdog"
342         depends on MFD_RN5T618
343         select WATCHDOG_CORE
344         help
345           If you say yes here you get support for watchdog on the Ricoh
346           RN5T618 PMIC.
347 
348           This driver can also be built as a module.  If so, the module
349           will be called rn5t618_wdt.
350 
351 config SUNXI_WATCHDOG
352         tristate "Allwinner SoCs watchdog support"
353         depends on ARCH_SUNXI
354         select WATCHDOG_CORE
355         help
356           Say Y here to include support for the watchdog timer
357           in Allwinner SoCs.
358           To compile this driver as a module, choose M here: the
359           module will be called sunxi_wdt.
360 
361 config COH901327_WATCHDOG
362         bool "ST-Ericsson COH 901 327 watchdog"
363         depends on ARCH_U300
364         default y if MACH_U300
365         select WATCHDOG_CORE
366         help
367           Say Y here to include Watchdog timer support for the
368           watchdog embedded into the ST-Ericsson U300 series platforms.
369           This watchdog is used to reset the system and thus cannot be
370           compiled as a module.
371 
372 config TWL4030_WATCHDOG
373         tristate "TWL4030 Watchdog"
374         depends on TWL4030_CORE
375         select WATCHDOG_CORE
376         help
377           Support for TI TWL4030 watchdog.  Say 'Y' here to enable the
378           watchdog timer support for TWL4030 chips.
379 
380 config STMP3XXX_RTC_WATCHDOG
381         tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
382         depends on RTC_DRV_STMP
383         select WATCHDOG_CORE
384         help
385           Say Y here to include support for the watchdog timer inside
386           the RTC for the STMP37XX/378X or i.MX23/28 SoC.
387           To compile this driver as a module, choose M here: the
388           module will be called stmp3xxx_rtc_wdt.
389 
390 config NUC900_WATCHDOG
391         tristate "Nuvoton NUC900 watchdog"
392         depends on ARCH_W90X900
393         help
394           Say Y here if to include support for the watchdog timer
395           for the Nuvoton NUC900 series SoCs.
396           To compile this driver as a module, choose M here: the
397           module will be called nuc900_wdt.
398 
399 config TS72XX_WATCHDOG
400         tristate "TS-72XX SBC Watchdog"
401         depends on MACH_TS72XX
402         help
403           Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
404           watchdog timer implemented in a external CPLD chip. Say Y here
405           if you want to support for the watchdog timer on TS-72XX boards.
406 
407           To compile this driver as a module, choose M here: the
408           module will be called ts72xx_wdt.
409 
410 config MAX63XX_WATCHDOG
411         tristate "Max63xx watchdog"
412         depends on ARM && HAS_IOMEM
413         select WATCHDOG_CORE
414         help
415           Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
416 
417 config IMX2_WDT
418         tristate "IMX2+ Watchdog"
419         depends on ARCH_MXC
420         select REGMAP_MMIO
421         select WATCHDOG_CORE
422         help
423           This is the driver for the hardware watchdog
424           on the Freescale IMX2 and later processors.
425           If you have one of these processors and wish to have
426           watchdog support enabled, say Y, otherwise say N.
427 
428           To compile this driver as a module, choose M here: the
429           module will be called imx2_wdt.
430 
431 config UX500_WATCHDOG
432         tristate "ST-Ericsson Ux500 watchdog"
433         depends on MFD_DB8500_PRCMU
434         select WATCHDOG_CORE
435         default y
436         help
437           Say Y here to include Watchdog timer support for the watchdog
438           existing in the prcmu of ST-Ericsson Ux500 series platforms.
439 
440           To compile this driver as a module, choose M here: the
441           module will be called ux500_wdt.
442 
443 config RETU_WATCHDOG
444         tristate "Retu watchdog"
445         depends on MFD_RETU
446         select WATCHDOG_CORE
447         help
448           Retu watchdog driver for Nokia Internet Tablets (770, N800,
449           N810). At least on N800 the watchdog cannot be disabled, so
450           this driver is essential and you should enable it.
451 
452           To compile this driver as a module, choose M here: the
453           module will be called retu_wdt.
454 
455 config MOXART_WDT
456         tristate "MOXART watchdog"
457         depends on ARCH_MOXART
458         help
459           Say Y here to include Watchdog timer support for the watchdog
460           existing on the MOXA ART SoC series platforms.
461 
462           To compile this driver as a module, choose M here: the
463           module will be called moxart_wdt.
464 
465 config SIRFSOC_WATCHDOG
466         tristate "SiRFSOC watchdog"
467         depends on ARCH_SIRF
468         select WATCHDOG_CORE
469         default y
470         help
471           Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
472           the watchdog triggers the system will be reset.
473 
474 config TEGRA_WATCHDOG
475         tristate "Tegra watchdog"
476         depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
477         select WATCHDOG_CORE
478         help
479           Say Y here to include support for the watchdog timer
480           embedded in NVIDIA Tegra SoCs.
481 
482           To compile this driver as a module, choose M here: the
483           module will be called tegra_wdt.
484 
485 config QCOM_WDT
486         tristate "QCOM watchdog"
487         depends on HAS_IOMEM
488         depends on ARCH_QCOM
489         select WATCHDOG_CORE
490         help
491           Say Y here to include Watchdog timer support for the watchdog found
492           on QCOM chipsets.  Currently supported targets are the MSM8960,
493           APQ8064, and IPQ8064.
494 
495           To compile this driver as a module, choose M here: the
496           module will be called qcom_wdt.
497 
498 config MESON_WATCHDOG
499         tristate "Amlogic Meson SoCs watchdog support"
500         depends on ARCH_MESON
501         select WATCHDOG_CORE
502         help
503           Say Y here to include support for the watchdog timer
504           in Amlogic Meson SoCs.
505           To compile this driver as a module, choose M here: the
506           module will be called meson_wdt.
507 
508 # AVR32 Architecture
509 
510 config AT32AP700X_WDT
511         tristate "AT32AP700x watchdog"
512         depends on CPU_AT32AP700X
513         help
514           Watchdog timer embedded into AT32AP700x devices. This will reboot
515           your system when the timeout is reached.
516 
517 # BLACKFIN Architecture
518 
519 config BFIN_WDT
520         tristate "Blackfin On-Chip Watchdog Timer"
521         depends on BLACKFIN
522         ---help---
523           If you say yes here you will get support for the Blackfin On-Chip
524           Watchdog Timer. If you have one of these processors and wish to
525           have watchdog support enabled, say Y, otherwise say N.
526 
527           To compile this driver as a module, choose M here: the
528           module will be called bfin_wdt.
529 
530 # CRIS Architecture
531 
532 # FRV Architecture
533 
534 # X86 (i386 + ia64 + x86_64) Architecture
535 
536 config ACQUIRE_WDT
537         tristate "Acquire SBC Watchdog Timer"
538         depends on X86
539         ---help---
540           This is the driver for the hardware watchdog on Single Board
541           Computers produced by Acquire Inc (and others). This watchdog
542           simply watches your kernel to make sure it doesn't freeze, and if
543           it does, it reboots your computer after a certain amount of time.
544 
545           To compile this driver as a module, choose M here: the
546           module will be called acquirewdt.
547 
548           Most people will say N.
549 
550 config ADVANTECH_WDT
551         tristate "Advantech SBC Watchdog Timer"
552         depends on X86
553         help
554           If you are configuring a Linux kernel for the Advantech single-board
555           computer, say `Y' here to support its built-in watchdog timer
556           feature. More information can be found at
557           <http://www.advantech.com.tw/products/>
558 
559 config ALIM1535_WDT
560         tristate "ALi M1535 PMU Watchdog Timer"
561         depends on X86 && PCI
562         ---help---
563           This is the driver for the hardware watchdog on the ALi M1535 PMU.
564 
565           To compile this driver as a module, choose M here: the
566           module will be called alim1535_wdt.
567 
568           Most people will say N.
569 
570 config ALIM7101_WDT
571         tristate "ALi M7101 PMU Computer Watchdog"
572         depends on PCI
573         help
574           This is the driver for the hardware watchdog on the ALi M7101 PMU
575           as used in the x86 Cobalt servers and also found in some
576           SPARC Netra servers too.
577 
578           To compile this driver as a module, choose M here: the
579           module will be called alim7101_wdt.
580 
581           Most people will say N.
582 
583 config F71808E_WDT
584         tristate "Fintek F71808E, F71862FG, F71869, F71882FG and F71889FG Watchdog"
585         depends on X86
586         help
587           This is the driver for the hardware watchdog on the Fintek
588           F71808E, F71862FG, F71869, F71882FG and F71889FG Super I/O controllers.
589 
590           You can compile this driver directly into the kernel, or use
591           it as a module.  The module will be called f71808e_wdt.
592 
593 config SP5100_TCO
594         tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
595         depends on X86 && PCI
596         ---help---
597           Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
598           (Total Cost of Ownership) timer is a watchdog timer that will reboot
599           the machine after its expiration. The expiration time can be
600           configured with the "heartbeat" parameter.
601 
602           To compile this driver as a module, choose M here: the
603           module will be called sp5100_tco.
604 
605 config GEODE_WDT
606         tristate "AMD Geode CS5535/CS5536 Watchdog"
607         depends on CS5535_MFGPT
608         help
609           This driver enables a watchdog capability built into the
610           CS5535/CS5536 companion chips for the AMD Geode GX and LX
611           processors.  This watchdog watches your kernel to make sure
612           it doesn't freeze, and if it does, it reboots your computer after
613           a certain amount of time.
614 
615           You can compile this driver directly into the kernel, or use
616           it as a module.  The module will be called geodewdt.
617 
618 config SC520_WDT
619         tristate "AMD Elan SC520 processor Watchdog"
620         depends on MELAN
621         help
622           This is the driver for the hardware watchdog built in to the
623           AMD "Elan" SC520 microcomputer commonly used in embedded systems.
624           This watchdog simply watches your kernel to make sure it doesn't
625           freeze, and if it does, it reboots your computer after a certain
626           amount of time.
627 
628           You can compile this driver directly into the kernel, or use
629           it as a module.  The module will be called sc520_wdt.
630 
631 config SBC_FITPC2_WATCHDOG
632         tristate "Compulab SBC-FITPC2 watchdog"
633         depends on X86
634         ---help---
635           This is the driver for the built-in watchdog timer on the fit-PC2,
636           fit-PC2i, CM-iAM single-board computers made by Compulab.
637 
638           It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
639           When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
640 
641           Entering BIOS setup temporary disables watchdog operation regardless to current state,
642           so system will not be restarted while user in BIOS setup.
643 
644           Once watchdog was enabled the system will be restarted every
645           "Watchdog Timer Value" period, so to prevent it user can restart or
646           disable the watchdog.
647 
648           To compile this driver as a module, choose M here: the
649           module will be called sbc_fitpc2_wdt.
650 
651           Most people will say N.
652 
653 config EUROTECH_WDT
654         tristate "Eurotech CPU-1220/1410 Watchdog Timer"
655         depends on X86
656         help
657           Enable support for the watchdog timer on the Eurotech CPU-1220 and
658           CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
659           information are at <http://www.eurotech.it/>.
660 
661 config IB700_WDT
662         tristate "IB700 SBC Watchdog Timer"
663         depends on X86
664         ---help---
665           This is the driver for the hardware watchdog on the IB700 Single
666           Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
667           simply watches your kernel to make sure it doesn't freeze, and if
668           it does, it reboots your computer after a certain amount of time.
669 
670           This driver is like the WDT501 driver but for slightly different hardware.
671 
672           To compile this driver as a module, choose M here: the
673           module will be called ib700wdt.
674 
675           Most people will say N.
676 
677 config IBMASR
678         tristate "IBM Automatic Server Restart"
679         depends on X86
680         help
681           This is the driver for the IBM Automatic Server Restart watchdog
682           timer built-in into some eServer xSeries machines.
683 
684           To compile this driver as a module, choose M here: the
685           module will be called ibmasr.
686 
687 config WAFER_WDT
688         tristate "ICP Single Board Computer Watchdog Timer"
689         depends on X86
690         help
691           This is a driver for the hardware watchdog on the ICP Single
692           Board Computer. This driver is working on (at least) the following
693           IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
694 
695           To compile this driver as a module, choose M here: the
696           module will be called wafer5823wdt.
697 
698 config I6300ESB_WDT
699         tristate "Intel 6300ESB Timer/Watchdog"
700         depends on PCI
701         ---help---
702           Hardware driver for the watchdog timer built into the Intel
703           6300ESB controller hub.
704 
705           To compile this driver as a module, choose M here: the
706           module will be called i6300esb.
707 
708 config IE6XX_WDT
709         tristate "Intel Atom E6xx Watchdog"
710         depends on X86 && PCI
711         select WATCHDOG_CORE
712         select MFD_CORE
713         select LPC_SCH
714         ---help---
715           Hardware driver for the watchdog timer built into the Intel
716           Atom E6XX (TunnelCreek) processor.
717 
718           To compile this driver as a module, choose M here: the
719           module will be called ie6xx_wdt.
720 
721 config INTEL_SCU_WATCHDOG
722         bool "Intel SCU Watchdog for Mobile Platforms"
723         depends on X86_INTEL_MID
724         ---help---
725           Hardware driver for the watchdog time built into the Intel SCU
726           for Intel Mobile Platforms.
727 
728           To compile this driver as a module, choose M here.
729 
730 config INTEL_MID_WATCHDOG
731         tristate "Intel MID Watchdog Timer"
732         depends on X86_INTEL_MID
733         select WATCHDOG_CORE
734         ---help---
735           Watchdog timer driver built into the Intel SCU for Intel MID
736           Platforms.
737 
738           This driver currently supports only the watchdog evolution
739           implementation in SCU, available for Merrifield generation.
740 
741           To compile this driver as a module, choose M here.
742 
743 config ITCO_WDT
744         tristate "Intel TCO Timer/Watchdog"
745         depends on (X86 || IA64) && PCI
746         select WATCHDOG_CORE
747         select LPC_ICH
748         ---help---
749           Hardware driver for the intel TCO timer based watchdog devices.
750           These drivers are included in the Intel 82801 I/O Controller
751           Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
752           controller hub.
753 
754           The TCO (Total Cost of Ownership) timer is a watchdog timer
755           that will reboot the machine after its second expiration. The
756           expiration time can be configured with the "heartbeat" parameter.
757 
758           On some motherboards the driver may fail to reset the chipset's
759           NO_REBOOT flag which prevents the watchdog from rebooting the
760           machine. If this is the case you will get a kernel message like
761           "failed to reset NO_REBOOT flag, reboot disabled by hardware".
762 
763           To compile this driver as a module, choose M here: the
764           module will be called iTCO_wdt.
765 
766 config ITCO_VENDOR_SUPPORT
767         bool "Intel TCO Timer/Watchdog Specific Vendor Support"
768         depends on ITCO_WDT
769         ---help---
770           Add vendor specific support to the intel TCO timer based watchdog
771           devices. At this moment we only have additional support for some
772           SuperMicro Inc. motherboards.
773 
774 config IT8712F_WDT
775         tristate "IT8712F (Smart Guardian) Watchdog Timer"
776         depends on X86
777         ---help---
778           This is the driver for the built-in watchdog timer on the IT8712F
779           Super I/0 chipset used on many motherboards.
780 
781           If the driver does not work, then make sure that the game port in
782           the BIOS is enabled.
783 
784           To compile this driver as a module, choose M here: the
785           module will be called it8712f_wdt.
786 
787 config IT87_WDT
788         tristate "IT87 Watchdog Timer"
789         depends on X86
790         ---help---
791           This is the driver for the hardware watchdog on the ITE IT8702,
792           IT8712, IT8716, IT8718, IT8720, IT8721, IT8726 and IT8728
793           Super I/O chips.
794 
795           If the driver does not work, then make sure that the game port in
796           the BIOS is enabled.
797 
798           This watchdog simply watches your kernel to make sure it doesn't
799           freeze, and if it does, it reboots your computer after a certain
800           amount of time.
801 
802           To compile this driver as a module, choose M here: the module will
803           be called it87_wdt.
804 
805 config HP_WATCHDOG
806         tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
807         depends on X86 && PCI
808         help
809           A software monitoring watchdog and NMI sourcing driver. This driver
810           will detect lockups and provide a stack trace. This is a driver that
811           will only load on an HP ProLiant system with a minimum of iLO2 support.
812           To compile this driver as a module, choose M here: the module will be
813           called hpwdt.
814 
815 config KEMPLD_WDT
816         tristate "Kontron COM Watchdog Timer"
817         depends on MFD_KEMPLD
818         select WATCHDOG_CORE
819         help
820           Support for the PLD watchdog on some Kontron ETX and COMexpress
821           (ETXexpress) modules
822 
823           This driver can also be built as a module. If so, the module will be
824           called kempld_wdt.
825 
826 config HPWDT_NMI_DECODING
827         bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
828         depends on HP_WATCHDOG
829         default y
830         help
831           When an NMI occurs this feature will make the necessary BIOS calls to
832           log the cause of the NMI.
833 
834 config SC1200_WDT
835         tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
836         depends on X86
837         help
838           This is a driver for National Semiconductor PC87307/PC97307 hardware
839           watchdog cards as found on the SC1200. This watchdog is mainly used
840           for power management purposes and can be used to power down the device
841           during inactivity periods (includes interrupt activity monitoring).
842 
843           To compile this driver as a module, choose M here: the
844           module will be called sc1200wdt.
845 
846           Most people will say N.
847 
848 config SCx200_WDT
849         tristate "National Semiconductor SCx200 Watchdog"
850         depends on SCx200 && PCI
851         help
852           Enable the built-in watchdog timer support on the National
853           Semiconductor SCx200 processors.
854 
855           If compiled as a module, it will be called scx200_wdt.
856 
857 config PC87413_WDT
858         tristate "NS PC87413 watchdog"
859         depends on X86
860         ---help---
861           This is the driver for the hardware watchdog on the PC87413 chipset
862           This watchdog simply watches your kernel to make sure it doesn't
863           freeze, and if it does, it reboots your computer after a certain
864           amount of time.
865 
866           To compile this driver as a module, choose M here: the
867           module will be called pc87413_wdt.
868 
869           Most people will say N.
870 
871 config NV_TCO
872         tristate "nVidia TCO Timer/Watchdog"
873         depends on X86 && PCI
874         ---help---
875           Hardware driver for the TCO timer built into the nVidia Hub family
876           (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
877           watchdog timer that will reboot the machine after its second
878           expiration. The expiration time can be configured with the
879           "heartbeat" parameter.
880 
881           On some motherboards the driver may fail to reset the chipset's
882           NO_REBOOT flag which prevents the watchdog from rebooting the
883           machine. If this is the case you will get a kernel message like
884           "failed to reset NO_REBOOT flag, reboot disabled by hardware".
885 
886           To compile this driver as a module, choose M here: the
887           module will be called nv_tco.
888 
889 config RDC321X_WDT
890         tristate "RDC R-321x SoC watchdog"
891         depends on X86_RDC321X
892         help
893           This is the driver for the built in hardware watchdog
894           in the RDC R-321x SoC.
895 
896           To compile this driver as a module, choose M here: the
897           module will be called rdc321x_wdt.
898 
899 config 60XX_WDT
900         tristate "SBC-60XX Watchdog Timer"
901         depends on X86
902         help
903           This driver can be used with the watchdog timer found on some
904           single board computers, namely the 6010 PII based computer.
905           It may well work with other cards.  It reads port 0x443 to enable
906           and re-set the watchdog timer, and reads port 0x45 to disable
907           the watchdog.  If you have a card that behave in similar ways,
908           you can probably make this driver work with your card as well.
909 
910           You can compile this driver directly into the kernel, or use
911           it as a module.  The module will be called sbc60xxwdt.
912 
913 config SBC8360_WDT
914         tristate "SBC8360 Watchdog Timer"
915         depends on X86_32
916         ---help---
917 
918           This is the driver for the hardware watchdog on the SBC8360 Single
919           Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
920 
921           To compile this driver as a module, choose M here: the
922           module will be called sbc8360.
923 
924           Most people will say N.
925 
926 config SBC7240_WDT
927         tristate "SBC Nano 7240 Watchdog Timer"
928         depends on X86_32 && !UML
929         ---help---
930           This is the driver for the hardware watchdog found on the IEI
931           single board computers EPIC Nano 7240 (and likely others). This
932           watchdog simply watches your kernel to make sure it doesn't freeze,
933           and if it does, it reboots your computer after a certain amount of
934           time.
935 
936           To compile this driver as a module, choose M here: the
937           module will be called sbc7240_wdt.
938 
939 config CPU5_WDT
940         tristate "SMA CPU5 Watchdog"
941         depends on X86
942         ---help---
943           TBD.
944           To compile this driver as a module, choose M here: the
945           module will be called cpu5wdt.
946 
947 config SMSC_SCH311X_WDT
948         tristate "SMSC SCH311X Watchdog Timer"
949         depends on X86
950         ---help---
951           This is the driver for the hardware watchdog timer on the
952           SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
953           (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
954           serial ports).
955 
956           To compile this driver as a module, choose M here: the
957           module will be called sch311x_wdt.
958 
959 config SMSC37B787_WDT
960         tristate "Winbond SMsC37B787 Watchdog Timer"
961         depends on X86
962         ---help---
963           This is the driver for the hardware watchdog component on the
964           Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
965           from Vision Systems and maybe others.
966 
967           This watchdog simply watches your kernel to make sure it doesn't
968           freeze, and if it does, it reboots your computer after a certain
969           amount of time.
970 
971           Usually a userspace daemon will notify the kernel WDT driver that
972           userspace is still alive, at regular intervals.
973 
974           To compile this driver as a module, choose M here: the
975           module will be called smsc37b787_wdt.
976 
977           Most people will say N.
978 
979 config VIA_WDT
980         tristate "VIA Watchdog Timer"
981         depends on X86 && PCI
982         select WATCHDOG_CORE
983         ---help---
984         This is the driver for the hardware watchdog timer on VIA
985         southbridge chipset CX700, VX800/VX820 or VX855/VX875.
986 
987         To compile this driver as a module, choose M here; the module
988         will be called via_wdt.
989 
990         Most people will say N.
991 
992 config W83627HF_WDT
993         tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
994         depends on X86
995         select WATCHDOG_CORE
996         ---help---
997           This is the driver for the hardware watchdog on the following
998           Super I/O chips.
999                 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1000                 W83637HF
1001                 W83667HG/HG-B
1002                 W83687THF
1003                 W83697HF
1004                 W83697UG
1005                 NCT6775
1006                 NCT6776
1007                 NCT6779
1008 
1009           This watchdog simply watches your kernel to make sure it doesn't
1010           freeze, and if it does, it reboots your computer after a certain
1011           amount of time.
1012 
1013           To compile this driver as a module, choose M here: the
1014           module will be called w83627hf_wdt.
1015 
1016           Most people will say N.
1017 
1018 config W83877F_WDT
1019         tristate "W83877F (EMACS) Watchdog Timer"
1020         depends on X86
1021         ---help---
1022           This is the driver for the hardware watchdog on the W83877F chipset
1023           as used in EMACS PC-104 motherboards (and likely others).  This
1024           watchdog simply watches your kernel to make sure it doesn't freeze,
1025           and if it does, it reboots your computer after a certain amount of
1026           time.
1027 
1028           To compile this driver as a module, choose M here: the
1029           module will be called w83877f_wdt.
1030 
1031           Most people will say N.
1032 
1033 config W83977F_WDT
1034         tristate "W83977F (PCM-5335) Watchdog Timer"
1035         depends on X86
1036         ---help---
1037           This is the driver for the hardware watchdog on the W83977F I/O chip
1038           as used in AAEON's PCM-5335 SBC (and likely others).  This
1039           watchdog simply watches your kernel to make sure it doesn't freeze,
1040           and if it does, it reboots your computer after a certain amount of
1041           time.
1042 
1043           To compile this driver as a module, choose M here: the
1044           module will be called w83977f_wdt.
1045 
1046 config MACHZ_WDT
1047         tristate "ZF MachZ Watchdog"
1048         depends on X86
1049         ---help---
1050           If you are using a ZF Micro MachZ processor, say Y here, otherwise
1051           N.  This is the driver for the watchdog timer built-in on that
1052           processor using ZF-Logic interface.  This watchdog simply watches
1053           your kernel to make sure it doesn't freeze, and if it does, it
1054           reboots your computer after a certain amount of time.
1055 
1056           To compile this driver as a module, choose M here: the
1057           module will be called machzwd.
1058 
1059 config SBC_EPX_C3_WATCHDOG
1060         tristate "Winsystems SBC EPX-C3 watchdog"
1061         depends on X86
1062         ---help---
1063           This is the driver for the built-in watchdog timer on the EPX-C3
1064           Single-board computer made by Winsystems, Inc.
1065 
1066           *Note*: This hardware watchdog is not probeable and thus there
1067           is no way to know if writing to its IO address will corrupt
1068           your system or have any real effect.  The only way to be sure
1069           that this driver does what you want is to make sure you
1070           are running it on an EPX-C3 from Winsystems with the watchdog
1071           timer at IO address 0x1ee and 0x1ef.  It will write to both those
1072           IO ports.  Basically, the assumption is made that if you compile
1073           this driver into your kernel and/or load it as a module, that you
1074           know what you are doing and that you are in fact running on an
1075           EPX-C3 board!
1076 
1077           To compile this driver as a module, choose M here: the
1078           module will be called sbc_epx_c3.
1079 
1080 # M32R Architecture
1081 
1082 # M68K Architecture
1083 
1084 config M54xx_WATCHDOG
1085         tristate "MCF54xx watchdog support"
1086         depends on M548x
1087         help
1088           To compile this driver as a module, choose M here: the
1089           module will be called m54xx_wdt.
1090 
1091 # MicroBlaze Architecture
1092 
1093 # MIPS Architecture
1094 
1095 config ATH79_WDT
1096         tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1097         depends on ATH79
1098         help
1099           Hardware driver for the built-in watchdog timer on the Atheros
1100           AR71XX/AR724X/AR913X SoCs.
1101 
1102 config BCM47XX_WDT
1103         tristate "Broadcom BCM47xx Watchdog Timer"
1104         depends on BCM47XX
1105         select WATCHDOG_CORE
1106         help
1107           Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1108 
1109 config RC32434_WDT
1110         tristate "IDT RC32434 SoC Watchdog Timer"
1111         depends on MIKROTIK_RB532
1112         help
1113           Hardware driver for the IDT RC32434 SoC built-in
1114           watchdog timer.
1115 
1116           To compile this driver as a module, choose M here: the
1117           module will be called rc32434_wdt.
1118 
1119 config INDYDOG
1120         tristate "Indy/I2 Hardware Watchdog"
1121         depends on SGI_HAS_INDYDOG
1122         help
1123           Hardware driver for the Indy's/I2's watchdog. This is a
1124           watchdog timer that will reboot the machine after a 60 second
1125           timer expired and no process has written to /dev/watchdog during
1126           that time.
1127 
1128 config JZ4740_WDT
1129         tristate "Ingenic jz4740 SoC hardware watchdog"
1130         depends on MACH_JZ4740
1131         select WATCHDOG_CORE
1132         help
1133           Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1134 
1135 config WDT_MTX1
1136         tristate "MTX-1 Hardware Watchdog"
1137         depends on MIPS_MTX1
1138         help
1139           Hardware driver for the MTX-1 boards. This is a watchdog timer that
1140           will reboot the machine after a 100 seconds timer expired.
1141 
1142 config PNX833X_WDT
1143         tristate "PNX833x Hardware Watchdog"
1144         depends on SOC_PNX8335
1145         help
1146           Hardware driver for the PNX833x's watchdog. This is a
1147           watchdog timer that will reboot the machine after a programmable
1148           timer has expired and no process has written to /dev/watchdog during
1149           that time.
1150 
1151 config SIBYTE_WDOG
1152         tristate "Sibyte SoC hardware watchdog"
1153         depends on CPU_SB1
1154         help
1155           Watchdog driver for the built in watchdog hardware in Sibyte
1156           SoC processors.  There are apparently two watchdog timers
1157           on such processors; this driver supports only the first one,
1158           because currently Linux only supports exporting one watchdog
1159           to userspace.
1160 
1161           To compile this driver as a loadable module, choose M here.
1162           The module will be called sb_wdog.
1163 
1164 config AR7_WDT
1165         tristate "TI AR7 Watchdog Timer"
1166         depends on AR7
1167         help
1168           Hardware driver for the TI AR7 Watchdog Timer.
1169 
1170 config TXX9_WDT
1171         tristate "Toshiba TXx9 Watchdog Timer"
1172         depends on CPU_TX39XX || CPU_TX49XX
1173         select WATCHDOG_CORE
1174         help
1175           Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1176 
1177 config OCTEON_WDT
1178         tristate "Cavium OCTEON SOC family Watchdog Timer"
1179         depends on CAVIUM_OCTEON_SOC
1180         default y
1181         select EXPORT_UASM if OCTEON_WDT = m
1182         help
1183           Hardware driver for OCTEON's on chip watchdog timer.
1184           Enables the watchdog for all cores running Linux. It
1185           installs a NMI handler and pokes the watchdog based on an
1186           interrupt.  On first expiration of the watchdog, the
1187           interrupt handler pokes it.  The second expiration causes an
1188           NMI that prints a message. The third expiration causes a
1189           global soft reset.
1190 
1191           When userspace has /dev/watchdog open, no poking is done
1192           from the first interrupt, it is then only poked when the
1193           device is written.
1194 
1195 config BCM63XX_WDT
1196         tristate "Broadcom BCM63xx hardware watchdog"
1197         depends on BCM63XX
1198         help
1199           Watchdog driver for the built in watchdog hardware in Broadcom
1200           BCM63xx SoC.
1201 
1202           To compile this driver as a loadable module, choose M here.
1203           The module will be called bcm63xx_wdt.
1204 
1205 config BCM2835_WDT
1206         tristate "Broadcom BCM2835 hardware watchdog"
1207         depends on ARCH_BCM2835
1208         select WATCHDOG_CORE
1209         help
1210           Watchdog driver for the built in watchdog hardware in Broadcom
1211           BCM2835 SoC.
1212 
1213           To compile this driver as a loadable module, choose M here.
1214           The module will be called bcm2835_wdt.
1215 
1216 config BCM_KONA_WDT
1217         tristate "BCM Kona Watchdog"
1218         depends on ARCH_BCM_MOBILE
1219         select WATCHDOG_CORE
1220         help
1221           Support for the watchdog timer on the following Broadcom BCM281xx
1222           family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1223           BCM28155 variants.
1224 
1225           Say 'Y' or 'M' here to enable the driver. The module will be called
1226           bcm_kona_wdt.
1227 
1228 config BCM_KONA_WDT_DEBUG
1229         bool "DEBUGFS support for BCM Kona Watchdog"
1230         depends on BCM_KONA_WDT
1231         help
1232           If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1233           access to the driver's internal data structures as well as watchdog
1234           timer hardware registres.
1235 
1236           If in doubt, say 'N'.
1237 
1238 config LANTIQ_WDT
1239         tristate "Lantiq SoC watchdog"
1240         depends on LANTIQ
1241         help
1242           Hardware driver for the Lantiq SoC Watchdog Timer.
1243 
1244 config RALINK_WDT
1245         tristate "Ralink SoC watchdog"
1246         select WATCHDOG_CORE
1247         depends on RALINK
1248         help
1249           Hardware driver for the Ralink SoC Watchdog Timer.
1250 
1251 # PARISC Architecture
1252 
1253 # POWERPC Architecture
1254 
1255 config GEF_WDT
1256         tristate "GE Watchdog Timer"
1257         depends on GE_FPGA
1258         ---help---
1259           Watchdog timer found in a number of GE single board computers.
1260 
1261 config MPC5200_WDT
1262         bool "MPC52xx Watchdog Timer"
1263         depends on PPC_MPC52xx
1264         help
1265           Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1266 
1267 config 8xxx_WDT
1268         tristate "MPC8xxx Platform Watchdog Timer"
1269         depends on PPC_8xx || PPC_83xx || PPC_86xx
1270         select WATCHDOG_CORE
1271         help
1272           This driver is for a SoC level watchdog that exists on some
1273           Freescale PowerPC processors. So far this driver supports:
1274           - MPC8xx watchdogs
1275           - MPC83xx watchdogs
1276           - MPC86xx watchdogs
1277 
1278           For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1279 
1280 config MV64X60_WDT
1281         tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1282         depends on MV64X60
1283 
1284 config PIKA_WDT
1285         tristate "PIKA FPGA Watchdog"
1286         depends on WARP
1287         default y
1288         help
1289           This enables the watchdog in the PIKA FPGA. Currently used on
1290           the Warp platform.
1291 
1292 config BOOKE_WDT
1293         tristate "PowerPC Book-E Watchdog Timer"
1294         depends on BOOKE || 4xx
1295         select WATCHDOG_CORE
1296         ---help---
1297           Watchdog driver for PowerPC Book-E chips, such as the Freescale
1298           MPC85xx SOCs and the IBM PowerPC 440.
1299 
1300           Please see Documentation/watchdog/watchdog-api.txt for
1301           more information.
1302 
1303 config BOOKE_WDT_DEFAULT_TIMEOUT
1304         int "PowerPC Book-E Watchdog Timer Default Timeout"
1305         depends on BOOKE_WDT
1306         default 38 if PPC_FSL_BOOK3E
1307         range 0 63 if PPC_FSL_BOOK3E
1308         default 3 if !PPC_FSL_BOOK3E
1309         range 0 3 if !PPC_FSL_BOOK3E
1310         help
1311           Select the default watchdog timer period to be used by the PowerPC
1312           Book-E watchdog driver.  A watchdog "event" occurs when the bit
1313           position represented by this number transitions from zero to one.
1314 
1315           For Freescale Book-E processors, this is a number between 0 and 63.
1316           For other Book-E processors, this is a number between 0 and 3.
1317 
1318           The value can be overridden by the wdt_period command-line parameter.
1319 
1320 config MEN_A21_WDT
1321        tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1322        select WATCHDOG_CORE
1323        depends on GPIOLIB
1324        help
1325         Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1326 
1327         The driver can also be built as a module. If so, the module will be
1328         called mena21_wdt.
1329 
1330         If unsure select N here.
1331 
1332 # PPC64 Architecture
1333 
1334 config WATCHDOG_RTAS
1335         tristate "RTAS watchdog"
1336         depends on PPC_RTAS
1337         help
1338           This driver adds watchdog support for the RTAS watchdog.
1339 
1340           To compile this driver as a module, choose M here. The module
1341           will be called wdrtas.
1342 
1343 # S390 Architecture
1344 
1345 config DIAG288_WATCHDOG
1346         tristate "System z diag288 Watchdog"
1347         depends on S390
1348         select WATCHDOG_CORE
1349         help
1350           IBM s/390 and zSeries machines running under z/VM 5.1 or later
1351           provide a virtual watchdog timer to their guest that cause a
1352           user define Control Program command to be executed after a
1353           timeout.
1354           LPAR provides a very similar interface. This driver handles
1355           both.
1356 
1357           To compile this driver as a module, choose M here. The module
1358           will be called diag288_wdt.
1359 
1360 # SUPERH (sh + sh64) Architecture
1361 
1362 config SH_WDT
1363         tristate "SuperH Watchdog"
1364         depends on SUPERH && (CPU_SH3 || CPU_SH4)
1365         select WATCHDOG_CORE
1366         help
1367           This driver adds watchdog support for the integrated watchdog in the
1368           SuperH processors. If you have one of these processors and wish
1369           to have watchdog support enabled, say Y, otherwise say N.
1370 
1371           As a side note, saying Y here will automatically boost HZ to 1000
1372           so that the timer has a chance to clear the overflow counter. On
1373           slower systems (such as the SH-2 and SH-3) this will likely yield
1374           some performance issues. As such, the WDT should be avoided here
1375           unless it is absolutely necessary.
1376 
1377           To compile this driver as a module, choose M here: the
1378           module will be called shwdt.
1379 
1380 # SPARC Architecture
1381 
1382 # SPARC64 Architecture
1383 
1384 config WATCHDOG_CP1XXX
1385         tristate "CP1XXX Hardware Watchdog support"
1386         depends on SPARC64 && PCI
1387         ---help---
1388           This is the driver for the hardware watchdog timers present on
1389           Sun Microsystems CompactPCI models CP1400 and CP1500.
1390 
1391           To compile this driver as a module, choose M here: the
1392           module will be called cpwatchdog.
1393 
1394           If you do not have a CompactPCI model CP1400 or CP1500, or
1395           another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1396           you should say N to this option.
1397 
1398 config WATCHDOG_RIO
1399         tristate "RIO Hardware Watchdog support"
1400         depends on SPARC64 && PCI
1401         help
1402           Say Y here to support the hardware watchdog capability on Sun RIO
1403           machines.  The watchdog timeout period is normally one minute but
1404           can be changed with a boot-time parameter.
1405 
1406 # XTENSA Architecture
1407 
1408 # Xen Architecture
1409 
1410 config XEN_WDT
1411         tristate "Xen Watchdog support"
1412         depends on XEN
1413         help
1414           Say Y here to support the hypervisor watchdog capability provided
1415           by Xen 4.0 and newer.  The watchdog timeout period is normally one
1416           minute but can be changed with a boot-time parameter.
1417 
1418 config UML_WATCHDOG
1419         tristate "UML watchdog"
1420         depends on UML
1421 
1422 #
1423 # ISA-based Watchdog Cards
1424 #
1425 
1426 comment "ISA-based Watchdog Cards"
1427         depends on ISA
1428 
1429 config PCWATCHDOG
1430         tristate "Berkshire Products ISA-PC Watchdog"
1431         depends on ISA
1432         ---help---
1433           This is the driver for the Berkshire Products ISA-PC Watchdog card.
1434           This card simply watches your kernel to make sure it doesn't freeze,
1435           and if it does, it reboots your computer after a certain amount of
1436           time. This driver is like the WDT501 driver but for different
1437           hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
1438           watchdog cards can be ordered from <http://www.berkprod.com/>.
1439 
1440           To compile this driver as a module, choose M here: the
1441           module will be called pcwd.
1442 
1443           Most people will say N.
1444 
1445 config MIXCOMWD
1446         tristate "Mixcom Watchdog"
1447         depends on ISA
1448         ---help---
1449           This is a driver for the Mixcom hardware watchdog cards.  This
1450           watchdog simply watches your kernel to make sure it doesn't freeze,
1451           and if it does, it reboots your computer after a certain amount of
1452           time.
1453 
1454           To compile this driver as a module, choose M here: the
1455           module will be called mixcomwd.
1456 
1457           Most people will say N.
1458 
1459 config WDT
1460         tristate "WDT Watchdog timer"
1461         depends on ISA
1462         ---help---
1463           If you have a WDT500P or WDT501P watchdog board, say Y here,
1464           otherwise N. It is not possible to probe for this board, which means
1465           that you have to inform the kernel about the IO port and IRQ that
1466           is needed (you can do this via the io and irq parameters)
1467 
1468           To compile this driver as a module, choose M here: the
1469           module will be called wdt.
1470 
1471 #
1472 # PCI-based Watchdog Cards
1473 #
1474 
1475 comment "PCI-based Watchdog Cards"
1476         depends on PCI
1477 
1478 config PCIPCWATCHDOG
1479         tristate "Berkshire Products PCI-PC Watchdog"
1480         depends on PCI
1481         ---help---
1482           This is the driver for the Berkshire Products PCI-PC Watchdog card.
1483           This card simply watches your kernel to make sure it doesn't freeze,
1484           and if it does, it reboots your computer after a certain amount of
1485           time. The card can also monitor the internal temperature of the PC.
1486           More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
1487 
1488           To compile this driver as a module, choose M here: the
1489           module will be called pcwd_pci.
1490 
1491           Most people will say N.
1492 
1493 config WDTPCI
1494         tristate "PCI-WDT500/501 Watchdog timer"
1495         depends on PCI
1496         ---help---
1497           If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
1498 
1499           If you have a PCI-WDT501 watchdog board then you can enable the
1500           temperature sensor by setting the type parameter to 501.
1501 
1502           If you want to enable the Fan Tachometer on the PCI-WDT501, then you
1503           can do this via the tachometer parameter. Only do this if you have a
1504           fan tachometer actually set up.
1505 
1506           To compile this driver as a module, choose M here: the
1507           module will be called wdt_pci.
1508 
1509 #
1510 # USB-based Watchdog Cards
1511 #
1512 
1513 comment "USB-based Watchdog Cards"
1514         depends on USB
1515 
1516 config USBPCWATCHDOG
1517         tristate "Berkshire Products USB-PC Watchdog"
1518         depends on USB
1519         ---help---
1520           This is the driver for the Berkshire Products USB-PC Watchdog card.
1521           This card simply watches your kernel to make sure it doesn't freeze,
1522           and if it does, it reboots your computer after a certain amount of
1523           time. The card can also monitor the internal temperature of the PC.
1524           More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
1525 
1526           To compile this driver as a module, choose M here: the
1527           module will be called pcwd_usb.
1528 
1529           Most people will say N.
1530 
1531 endif # WATCHDOG

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