1# SPDX-License-Identifier: GPL-2.0-only
   2
   3#
   4# Watchdog device configuration
   5#
   6
   7menuconfig WATCHDOG
   8	bool "Watchdog Timer Support"
   9	help
  10	  If you say Y here (and to one of the following options) and create a
  11	  character special file /dev/watchdog with major number 10 and minor
  12	  number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
  13	  subsequently opening the file and then failing to write to it for
  14	  longer than 1 minute will result in rebooting the machine. This
  15	  could be useful for a networked machine that needs to come back
  16	  on-line as fast as possible after a lock-up. There's both a watchdog
  17	  implementation entirely in software (which can sometimes fail to
  18	  reboot the machine) and a driver for hardware watchdog boards, which
  19	  are more robust and can also keep track of the temperature inside
  20	  your computer. For details, read
  21	  <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
  22
  23	  The watchdog is usually used together with the watchdog daemon
  24	  which is available from
  25	  <https://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon
  26	  can also monitor NFS connections and can reboot the machine when the
  27	  process table is full.
  28
  29	  If unsure, say N.
  30
  31if WATCHDOG
  32
  33config WATCHDOG_CORE
  34	tristate "WatchDog Timer Driver Core"
  35	help
  36	  Say Y here if you want to use the new watchdog timer driver core.
  37	  This driver provides a framework for all watchdog timer drivers
  38	  and gives them the /dev/watchdog interface (and later also the
  39	  sysfs interface).
  40
  41config WATCHDOG_NOWAYOUT
  42	bool "Disable watchdog shutdown on close"
  43	help
  44	  The default watchdog behaviour (which you get if you say N here) is
  45	  to stop the timer if the process managing it closes the file
  46	  /dev/watchdog. It's always remotely possible that this process might
  47	  get killed. If you say Y here, the watchdog cannot be stopped once
  48	  it has been started.
  49
  50config WATCHDOG_HANDLE_BOOT_ENABLED
  51	bool "Update boot-enabled watchdog until userspace takes over"
  52	default y
  53	help
  54	  The default watchdog behaviour (which you get if you say Y here) is
  55	  to ping watchdog devices that were enabled before the driver has
  56	  been loaded until control is taken over from userspace using the
  57	  /dev/watchdog file. If you say N here, the kernel will not update
  58	  the watchdog on its own. Thus if your userspace does not start fast
  59	  enough your device will reboot.
  60
  61config WATCHDOG_OPEN_TIMEOUT
  62	int "Timeout value for opening watchdog device"
  63	default 0
  64	help
  65	  The maximum time, in seconds, for which the watchdog framework takes
  66	  care of pinging a hardware watchdog.  A value of 0 means infinite. The
  67	  value set here can be overridden by the commandline parameter
  68	  "watchdog.open_timeout".
  69
  70config WATCHDOG_SYSFS
  71	bool "Read different watchdog information through sysfs"
  72	help
  73	  Say Y here if you want to enable watchdog device status read through
  74	  sysfs attributes.
  75
  76config WATCHDOG_HRTIMER_PRETIMEOUT
  77	bool "Enable watchdog hrtimer-based pretimeouts"
  78	help
  79	  Enable this if you want to use a hrtimer timer based pretimeout for
  80	  watchdogs that do not natively support pretimeout support. Be aware
  81	  that because this pretimeout functionality uses hrtimers, it may not
  82	  be able to fire before the actual watchdog fires in some situations.
  83
  84comment "Watchdog Pretimeout Governors"
  85
  86config WATCHDOG_PRETIMEOUT_GOV
  87	bool "Enable watchdog pretimeout governors"
  88	depends on WATCHDOG_CORE
  89	help
  90	  The option allows to select watchdog pretimeout governors.
  91
  92config WATCHDOG_PRETIMEOUT_GOV_SEL
  93	tristate
  94	depends on WATCHDOG_PRETIMEOUT_GOV
  95	default m
  96	select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
  97
  98if WATCHDOG_PRETIMEOUT_GOV
  99
 100config WATCHDOG_PRETIMEOUT_GOV_NOOP
 101	tristate "Noop watchdog pretimeout governor"
 102	depends on WATCHDOG_CORE
 103	default WATCHDOG_CORE
 104	help
 105	  Noop watchdog pretimeout governor, only an informational
 106	  message is added to kernel log buffer.
 107
 108config WATCHDOG_PRETIMEOUT_GOV_PANIC
 109	tristate "Panic watchdog pretimeout governor"
 110	depends on WATCHDOG_CORE
 111	default WATCHDOG_CORE
 112	help
 113	  Panic watchdog pretimeout governor, on watchdog pretimeout
 114	  event put the kernel into panic.
 115
 116choice
 117	prompt "Default Watchdog Pretimeout Governor"
 118	default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
 119	help
 120	  This option selects a default watchdog pretimeout governor.
 121	  The governor takes its action, if a watchdog is capable
 122	  to report a pretimeout event.
 123
 124config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
 125	bool "noop"
 126	depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
 127	help
 128	  Use noop watchdog pretimeout governor by default. If noop
 129	  governor is selected by a user, write a short message to
 130	  the kernel log buffer and don't do any system changes.
 131
 132config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
 133	bool "panic"
 134	depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
 135	help
 136	  Use panic watchdog pretimeout governor by default, if
 137	  a watchdog pretimeout event happens, consider that
 138	  a watchdog feeder is dead and reboot is unavoidable.
 139
 140endchoice
 141
 142endif # WATCHDOG_PRETIMEOUT_GOV
 143
 144#
 145# General Watchdog drivers
 146#
 147
 148comment "Watchdog Device Drivers"
 149
 150# Architecture Independent
 151
 152config SOFT_WATCHDOG
 153	tristate "Software watchdog"
 154	select WATCHDOG_CORE
 155	help
 156	  A software monitoring watchdog. This will fail to reboot your system
 157	  from some situations that the hardware watchdog will recover
 158	  from. Equally it's a lot cheaper to install.
 159
 160	  To compile this driver as a module, choose M here: the
 161	  module will be called softdog.
 162
 163config SOFT_WATCHDOG_PRETIMEOUT
 164	bool "Software watchdog pretimeout governor support"
 165	depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
 166	help
 167	  Enable this if you want to use pretimeout governors with the software
 168	  watchdog. Be aware that governors might affect the watchdog because it
 169	  is purely software, e.g. the panic governor will stall it!
 170
 171config BD957XMUF_WATCHDOG
 172	tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
 173	depends on MFD_ROHM_BD957XMUF
 174	select WATCHDOG_CORE
 175	help
 176	  Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
 177	  These PMIC ICs contain watchdog block which can be configured
 178	  to toggle reset line if SoC fails to ping watchdog via GPIO.
 179
 180	  Say Y here to include support for the ROHM BD9576 or BD9573
 181	  watchdog. Alternatively say M to compile the driver as a module,
 182	  which will be called bd9576_wdt.
 183
 184config BD96801_WATCHDOG
 185	tristate "ROHM BD96801 PMIC Watchdog"
 186	depends on MFD_ROHM_BD96801
 187	select WATCHDOG_CORE
 188	help
 189	  Support for the watchdog in the ROHM BD96801 PMIC. Watchdog can be
 190	  configured to only generate IRQ or to trigger system reset via reset
 191	  pin.
 192
 193	  Say Y here to include support for the ROHM BD96801 watchdog.
 194	  Alternatively say M to compile the driver as a module,
 195	  which will be called bd96801_wdt.
 196
 197config CROS_EC_WATCHDOG
 198	tristate "ChromeOS EC-based watchdog"
 199	select WATCHDOG_CORE
 200	depends on CROS_EC
 201	help
 202	  Watchdog driver for Chromebook devices equipped with embedded controller.
 203	  Trigger event is recorded in EC and checked on the subsequent boot.
 204
 205	  To compile this driver as a module, choose M here: the
 206	  module will be called cros_ec_wdt.
 207
 208config DA9052_WATCHDOG
 209	tristate "Dialog DA9052 Watchdog"
 210	depends on PMIC_DA9052 || COMPILE_TEST
 211	select WATCHDOG_CORE
 212	help
 213	  Support for the watchdog in the DA9052 PMIC. Watchdog trigger
 214	  cause system reset.
 215
 216	  Say Y here to include support for the DA9052 watchdog.
 217	  Alternatively say M to compile the driver as a module,
 218	  which will be called da9052_wdt.
 219
 220config DA9055_WATCHDOG
 221	tristate "Dialog Semiconductor DA9055 Watchdog"
 222	depends on MFD_DA9055 || COMPILE_TEST
 223	select WATCHDOG_CORE
 224	help
 225	  If you say yes here you get support for watchdog on the Dialog
 226	  Semiconductor DA9055 PMIC.
 227
 228	  This driver can also be built as a module.  If so, the module
 229	  will be called da9055_wdt.
 230
 231config DA9063_WATCHDOG
 232	tristate "Dialog DA9063 Watchdog"
 233	depends on MFD_DA9063 || COMPILE_TEST
 234	depends on I2C
 235	select WATCHDOG_CORE
 236	help
 237	  Support for the watchdog in the DA9063 PMIC.
 238
 239	  This driver can be built as a module. The module name is da9063_wdt.
 240
 241config DA9062_WATCHDOG
 242	tristate "Dialog DA9062/61 Watchdog"
 243	depends on MFD_DA9062 || COMPILE_TEST
 244	depends on I2C
 245	select WATCHDOG_CORE
 246	help
 247	  Support for the watchdog in the DA9062 and DA9061 PMICs.
 248
 249	  This driver can be built as a module. The module name is da9062_wdt.
 250
 251config GPIO_WATCHDOG
 252	tristate "Watchdog device controlled through GPIO-line"
 253	depends on OF_GPIO
 254	select WATCHDOG_CORE
 255	help
 256	  If you say yes here you get support for watchdog device
 257	  controlled through GPIO-line.
 258
 259config GPIO_WATCHDOG_ARCH_INITCALL
 260	bool "Register the watchdog as early as possible"
 261	depends on GPIO_WATCHDOG=y
 262	help
 263	  In some situations, the default initcall level (module_init)
 264	  in not early enough in the boot process to avoid the watchdog
 265	  to be triggered.
 266	  If you say yes here, the initcall level would be raised to
 267	  arch_initcall.
 268	  If in doubt, say N.
 269
 270config LENOVO_SE10_WDT
 271	tristate "Lenovo SE10 Watchdog"
 272	depends on (X86 && DMI) || COMPILE_TEST
 273	depends on HAS_IOPORT
 274	select WATCHDOG_CORE
 275	help
 276	  If you say yes here you get support for the watchdog
 277	  functionality for the Lenovo SE10 platform.
 278
 279	  This driver can also be built as a module. If so, the module
 280	  will be called lenovo-se10-wdt.
 281
 282config MENF21BMC_WATCHDOG
 283	tristate "MEN 14F021P00 BMC Watchdog"
 284	depends on MFD_MENF21BMC || COMPILE_TEST
 285	depends on I2C
 286	select WATCHDOG_CORE
 287	help
 288	  Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
 289
 290	  This driver can also be built as a module. If so the module
 291	  will be called menf21bmc_wdt.
 292
 293config MENZ069_WATCHDOG
 294	tristate "MEN 16Z069 Watchdog"
 295	depends on MCB
 296	select WATCHDOG_CORE
 297	help
 298	  Say Y here to include support for the MEN 16Z069 Watchdog.
 299
 300	  This driver can also be built as a module. If so the module
 301	  will be called menz069_wdt.
 302
 303config WDAT_WDT
 304	tristate "ACPI Watchdog Action Table (WDAT)"
 305	depends on ACPI
 306	select WATCHDOG_CORE
 307	select ACPI_WATCHDOG
 308	help
 309	  This driver adds support for systems with ACPI Watchdog Action
 310	  Table (WDAT) table. Servers typically have this but it can be
 311	  found on some desktop machines as well. This driver will take
 312	  over the native iTCO watchdog driver found on many Intel CPUs.
 313
 314	  To compile this driver as module, choose M here: the module will
 315	  be called wdat_wdt.
 316
 317config WM831X_WATCHDOG
 318	tristate "WM831x watchdog"
 319	depends on MFD_WM831X
 320	select WATCHDOG_CORE
 321	help
 322	  Support for the watchdog in the WM831x AudioPlus PMICs.  When
 323	  the watchdog triggers the system will be reset.
 324
 325config WM8350_WATCHDOG
 326	tristate "WM8350 watchdog"
 327	depends on MFD_WM8350
 328	select WATCHDOG_CORE
 329	help
 330	  Support for the watchdog in the WM8350 AudioPlus PMIC.  When
 331	  the watchdog triggers the system will be reset.
 332
 333config XILINX_WATCHDOG
 334	tristate "Xilinx Watchdog timer"
 335	depends on HAS_IOMEM
 336	select WATCHDOG_CORE
 337	help
 338	  Watchdog driver for the xps_timebase_wdt IP core.
 339
 340	  To compile this driver as a module, choose M here: the
 341	  module will be called of_xilinx_wdt.
 342
 343config XILINX_WINDOW_WATCHDOG
 344	tristate "Xilinx window watchdog timer"
 345	depends on HAS_IOMEM
 346	depends on ARM64 || COMPILE_TEST
 347	select WATCHDOG_CORE
 348	help
 349	  Window watchdog driver for the versal_wwdt IP core.
 350	  Window watchdog timer(WWDT) contains closed(first) and
 351	  open(second) window with 32 bit width. Write to the watchdog
 352	  timer within predefined window periods of time. This means
 353	  a period that is not too soon and a period that is not too
 354	  late. The WWDT has to be restarted within the open window time.
 355	  If software tries to restart WWDT outside of the open window
 356	  time period, it generates a reset.
 357
 358	  To compile this driver as a module, choose M here: the
 359	  module will be called xilinx_wwdt.
 360
 361config ZIIRAVE_WATCHDOG
 362	tristate "Zodiac RAVE Watchdog Timer"
 363	depends on I2C
 364	select WATCHDOG_CORE
 365	help
 366	  Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
 367	  Processor.
 368
 369	  To compile this driver as a module, choose M here: the
 370	  module will be called ziirave_wdt.
 371
 372config RAVE_SP_WATCHDOG
 373	tristate "RAVE SP Watchdog timer"
 374	depends on RAVE_SP_CORE
 375	depends on NVMEM || !NVMEM
 376	select WATCHDOG_CORE
 377	help
 378	  Support for the watchdog on RAVE SP device.
 379
 380config MLX_WDT
 381	tristate "Mellanox Watchdog"
 382	depends on MELLANOX_PLATFORM || COMPILE_TEST
 383	select WATCHDOG_CORE
 384	select REGMAP
 385	help
 386	  This is the driver for the hardware watchdog on Mellanox systems.
 387	  If you are going to use it, say Y here, otherwise N.
 388	  This driver can be used together with the watchdog daemon.
 389	  It can also watch your kernel to make sure it doesn't freeze,
 390	  and if it does, it reboots your system after a certain amount of
 391	  time.
 392
 393	  To compile this driver as a module, choose M here: the
 394	  module will be called mlx-wdt.
 395
 396config SL28CPLD_WATCHDOG
 397	tristate "Kontron sl28cpld Watchdog"
 398	depends on MFD_SL28CPLD || COMPILE_TEST
 399	select WATCHDOG_CORE
 400	help
 401	  Say Y here to include support for the watchdog timer
 402	  on the Kontron sl28 CPLD.
 403
 404	  To compile this driver as a module, choose M here: the
 405	  module will be called sl28cpld_wdt.
 406
 407# ALPHA Architecture
 408
 409# ARM Architecture
 410
 411config AIROHA_WATCHDOG
 412	tristate "Airoha EN7581 Watchdog"
 413	depends on ARCH_AIROHA || COMPILE_TEST
 414	select WATCHDOG_CORE
 415	help
 416	  Watchdog timer embedded into Airoha SoC. This will reboot your
 417	  system when the timeout is reached.
 418
 419config ARM_SP805_WATCHDOG
 420	tristate "ARM SP805 Watchdog"
 421	depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
 422	select WATCHDOG_CORE
 423	help
 424	  ARM Primecell SP805 Watchdog timer. This will reboot your system when
 425	  the timeout is reached.
 426
 427config ARM_SBSA_WATCHDOG
 428	tristate "ARM SBSA Generic Watchdog"
 429	depends on ARM64
 430	depends on ARM_ARCH_TIMER
 431	select WATCHDOG_CORE
 432	help
 433	  ARM SBSA Generic Watchdog has two stage timeouts:
 434	  the first signal (WS0) is for alerting the system by interrupt,
 435	  the second one (WS1) is a real hardware reset.
 436	  More details: ARM DEN0029B - Server Base System Architecture (SBSA)
 437
 438	  This driver can operate ARM SBSA Generic Watchdog as a single stage
 439	  or a two stages watchdog, it depends on the module parameter "action".
 440
 441	  Note: the maximum timeout in the two stages mode is half of that in
 442	  the single stage mode.
 443
 444	  To compile this driver as module, choose M here: The module
 445	  will be called sbsa_gwdt.
 446
 447config ARMADA_37XX_WATCHDOG
 448	tristate "Armada 37xx watchdog"
 449	depends on ARCH_MVEBU || COMPILE_TEST
 450	depends on HAS_IOMEM
 451	select MFD_SYSCON
 452	select WATCHDOG_CORE
 453	help
 454	   Say Y here to include support for the watchdog timer found on
 455	   Marvell Armada 37xx SoCs.
 456	   To compile this driver as a module, choose M here: the
 457	   module will be called armada_37xx_wdt.
 458
 459config ASM9260_WATCHDOG
 460	tristate "Alphascale ASM9260 watchdog"
 461	depends on MACH_ASM9260 || COMPILE_TEST
 462	depends on OF
 463	select WATCHDOG_CORE
 464	select RESET_CONTROLLER
 465	help
 466	  Watchdog timer embedded into Alphascale asm9260 chips. This will
 467	  reboot your system when the timeout is reached.
 468
 469config AT91RM9200_WATCHDOG
 470	tristate "AT91RM9200 watchdog"
 471	depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
 472	help
 473	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
 474	  system when the timeout is reached.
 475
 476config AT91SAM9X_WATCHDOG
 477	tristate "AT91SAM9X / AT91CAP9 watchdog"
 478	depends on ARCH_AT91 || COMPILE_TEST
 479	select WATCHDOG_CORE
 480	help
 481	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
 482	  reboot your system when the timeout is reached.
 483
 484config SAMA5D4_WATCHDOG
 485	tristate "Atmel SAMA5D4 Watchdog Timer"
 486	depends on ARCH_AT91 || COMPILE_TEST
 487	select WATCHDOG_CORE
 488	help
 489	  Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
 490	  Its Watchdog Timer Mode Register can be written more than once.
 491	  This will reboot your system when the timeout is reached.
 492
 493config CADENCE_WATCHDOG
 494	tristate "Cadence Watchdog Timer"
 495	depends on HAS_IOMEM
 496	select WATCHDOG_CORE
 497	help
 498	  Say Y here if you want to include support for the watchdog
 499	  timer in the Xilinx Zynq.
 500
 501config 21285_WATCHDOG
 502	tristate "DC21285 watchdog"
 503	depends on FOOTBRIDGE
 504	help
 505	  The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
 506	  here if you wish to use this. Alternatively say M to compile the
 507	  driver as a module, which will be called wdt285.
 508
 509	  This driver does not work on all machines. In particular, early CATS
 510	  boards have hardware problems that will cause the machine to simply
 511	  lock up if the watchdog fires.
 512
 513	  "If in doubt, leave it out" - say N.
 514
 515config 977_WATCHDOG
 516	tristate "NetWinder WB83C977 watchdog"
 517	depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
 518	depends on HAS_IOPORT
 519	help
 520	  Say Y here to include support for the WB977 watchdog included in
 521	  NetWinder machines. Alternatively say M to compile the driver as
 522	  a module, which will be called wdt977.
 523
 524	  Not sure? It's safe to say N.
 525
 526config FTWDT010_WATCHDOG
 527	tristate "Faraday Technology FTWDT010 watchdog"
 528	depends on ARM || COMPILE_TEST
 529	select WATCHDOG_CORE
 530	default ARCH_GEMINI
 531	help
 532	  Say Y here if to include support for the Faraday Technology
 533	  FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
 534	  family of devices.
 535
 536	  To compile this driver as a module, choose M here: the
 537	  module will be called ftwdt010_wdt.
 538
 539config IXP4XX_WATCHDOG
 540	tristate "IXP4xx Watchdog"
 541	depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
 542	select WATCHDOG_CORE
 543	help
 544	  Say Y here if to include support for the watchdog timer
 545	  in the Intel IXP4xx network processors. This driver can
 546	  be built as a module by choosing M. The module will
 547	  be called ixp4xx_wdt.
 548
 549	  Note: The internal IXP4xx watchdog does a soft CPU reset
 550	  which doesn't reset any peripherals. There are circumstances
 551	  where the watchdog will fail to reset the board correctly
 552	  (e.g., if the boot ROM is in an unreadable state).
 553
 554	  Say N if you are unsure.
 555
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 556config S3C2410_WATCHDOG
 557	tristate "S3C6410/S5Pv210/Exynos Watchdog"
 558	depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
 559	select WATCHDOG_CORE
 560	select MFD_SYSCON if ARCH_EXYNOS
 561	help
 562	  Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
 563	  SoCs. This will reboot the system when the timer expires with
 564	  the watchdog enabled.
 565
 566	  The driver is limited by the speed of the system's PCLK
 567	  signal, so with reasonably fast systems (PCLK around 50-66MHz)
 568	  then watchdog intervals of over approximately 20seconds are
 569	  unavailable.
 570
 571	  Choose Y/M here only if you build for such Samsung SoC.
 572	  The driver can be built as a module by choosing M, and will
 573	  be called s3c2410_wdt.
 574
 575config SA1100_WATCHDOG
 576	tristate "SA1100/PXA2xx watchdog"
 577	depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
 578	help
 579	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
 580	  reboot your system when timeout is reached.
 581
 582	  NOTE: once enabled, this timer cannot be disabled.
 583
 584	  To compile this driver as a module, choose M here: the
 585	  module will be called sa1100_wdt.
 586
 587config DW_WATCHDOG
 588	tristate "Synopsys DesignWare watchdog"
 589	depends on HAS_IOMEM
 590	select WATCHDOG_CORE
 591	help
 592	  Say Y here if to include support for the Synopsys DesignWare
 593	  watchdog timer found in many chips.
 594	  To compile this driver as a module, choose M here: the
 595	  module will be called dw_wdt.
 596
 597config EP93XX_WATCHDOG
 598	tristate "EP93xx Watchdog"
 599	depends on ARCH_EP93XX || COMPILE_TEST
 600	select WATCHDOG_CORE
 601	help
 602	  Say Y here if to include support for the watchdog timer
 603	  embedded in the Cirrus Logic EP93xx family of devices.
 604
 605	  To compile this driver as a module, choose M here: the
 606	  module will be called ep93xx_wdt.
 607
 608config OMAP_WATCHDOG
 609	tristate "OMAP Watchdog"
 610	depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
 611	select WATCHDOG_CORE
 612	help
 613	  Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
 614	  Say 'Y' here to enable the
 615	  OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
 616
 617config PNX4008_WATCHDOG
 618	tristate "LPC32XX Watchdog"
 619	depends on ARCH_LPC32XX || COMPILE_TEST
 620	select WATCHDOG_CORE
 621	help
 622	  Say Y here if to include support for the watchdog timer
 623	  in the LPC32XX processor.
 624	  This driver can be built as a module by choosing M. The module
 625	  will be called pnx4008_wdt.
 626
 627	  Say N if you are unsure.
 628
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 629config DAVINCI_WATCHDOG
 630	tristate "DaVinci watchdog"
 631	depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
 632	select WATCHDOG_CORE
 633	help
 634	  Say Y here if to include support for the watchdog timer
 635	  in the DaVinci DM644x/DM646x or Keystone processors.
 636	  To compile this driver as a module, choose M here: the
 637	  module will be called davinci_wdt.
 638
 639	  NOTE: once enabled, this timer cannot be disabled.
 640	  Say N if you are unsure.
 641
 642config K3_RTI_WATCHDOG
 643	tristate "Texas Instruments K3 RTI watchdog"
 644	depends on ARCH_K3 || COMPILE_TEST
 645	select WATCHDOG_CORE
 646	help
 647	  Say Y here if you want to include support for the K3 watchdog
 648	  timer (RTI module) available in the K3 generation of processors.
 649
 650config ORION_WATCHDOG
 651	tristate "Orion watchdog"
 652	depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
 653	depends on ARM
 654	select WATCHDOG_CORE
 655	help
 656	  Say Y here if to include support for the watchdog timer
 657	  in the Marvell Orion5x and Kirkwood ARM SoCs.
 658	  To compile this driver as a module, choose M here: the
 659	  module will be called orion_wdt.
 660
 661config RN5T618_WATCHDOG
 662	tristate "Ricoh RN5T618 watchdog"
 663	depends on MFD_RN5T618 || COMPILE_TEST
 664	select WATCHDOG_CORE
 665	help
 666	  If you say yes here you get support for watchdog on the Ricoh
 667	  RN5T618 PMIC.
 668
 669	  This driver can also be built as a module.  If so, the module
 670	  will be called rn5t618_wdt.
 671
 672config SUNXI_WATCHDOG
 673	tristate "Allwinner SoCs watchdog support"
 674	depends on ARCH_SUNXI || COMPILE_TEST
 675	select WATCHDOG_CORE
 676	help
 677	  Say Y here to include support for the watchdog timer
 678	  in Allwinner SoCs.
 679	  To compile this driver as a module, choose M here: the
 680	  module will be called sunxi_wdt.
 681
 682config NPCM7XX_WATCHDOG
 683	tristate "Nuvoton NPCM750 watchdog"
 684	depends on ARCH_NPCM || COMPILE_TEST
 685	default y if ARCH_NPCM7XX
 686	select WATCHDOG_CORE
 687	help
 688	  Say Y here to include Watchdog timer support for the
 689	  watchdog embedded into the NPCM7xx.
 690	  This watchdog is used to reset the system and thus cannot be
 691	  compiled as a module.
 692
 693config TWL4030_WATCHDOG
 694	tristate "TWL4030 Watchdog"
 695	depends on TWL4030_CORE
 696	select WATCHDOG_CORE
 697	help
 698	  Support for TI TWL4030 watchdog.  Say 'Y' here to enable the
 699	  watchdog timer support for TWL4030 chips.
 700
 701config STMP3XXX_RTC_WATCHDOG
 702	tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
 703	depends on RTC_DRV_STMP || COMPILE_TEST
 704	select WATCHDOG_CORE
 705	help
 706	  Say Y here to include support for the watchdog timer inside
 707	  the RTC for the STMP37XX/378X or i.MX23/28 SoC.
 708	  To compile this driver as a module, choose M here: the
 709	  module will be called stmp3xxx_rtc_wdt.
 710
 711config TS4800_WATCHDOG
 712	tristate "TS-4800 Watchdog"
 713	depends on HAS_IOMEM && OF
 714	depends on SOC_IMX51 || COMPILE_TEST
 715	select WATCHDOG_CORE
 716	select MFD_SYSCON
 717	help
 718	  Technologic Systems TS-4800 has watchdog timer implemented in
 719	  an external FPGA. Say Y here if you want to support for the
 720	  watchdog timer on TS-4800 board.
 721
 722config TS72XX_WATCHDOG
 723	tristate "TS-72XX SBC Watchdog"
 724	depends on MACH_TS72XX || COMPILE_TEST
 725	select WATCHDOG_CORE
 726	help
 727	  Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
 728	  watchdog timer implemented in a external CPLD chip. Say Y here
 729	  if you want to support for the watchdog timer on TS-72XX boards.
 730
 731	  To compile this driver as a module, choose M here: the
 732	  module will be called ts72xx_wdt.
 733
 734config MAX63XX_WATCHDOG
 735	tristate "Max63xx watchdog"
 736	depends on HAS_IOMEM
 737	select WATCHDOG_CORE
 738	help
 739	  Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
 740
 741config MAX77620_WATCHDOG
 742	tristate "Maxim Max77620 Watchdog Timer"
 743	depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
 744	select WATCHDOG_CORE
 745	help
 746	  This is the driver for the Max77620 watchdog timer.
 747	  Say 'Y' here to enable the watchdog timer support for
 748	  MAX77620 chips. To compile this driver as a module,
 749	  choose M here: the module will be called max77620_wdt.
 750
 751config IMX2_WDT
 752	tristate "IMX2+ Watchdog"
 753	depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
 754	select REGMAP_MMIO
 755	select WATCHDOG_CORE
 756	help
 757	  This is the driver for the hardware watchdog
 758	  on the Freescale IMX2 and later processors.
 759	  If you have one of these processors and wish to have
 760	  watchdog support enabled, say Y, otherwise say N.
 761
 762	  To compile this driver as a module, choose M here: the
 763	  module will be called imx2_wdt.
 764
 765config IMX_SC_WDT
 766	tristate "IMX SC Watchdog"
 767	depends on HAVE_ARM_SMCCC
 768	depends on IMX_SCU || COMPILE_TEST
 769	select WATCHDOG_CORE
 770	help
 771	  This is the driver for the system controller watchdog
 772	  on the NXP i.MX SoCs with system controller inside, the
 773	  watchdog driver will call ARM SMC API and trap into
 774	  ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
 775	  will request system controller to execute the operations.
 776	  If you have one of these processors and wish to have
 777	  watchdog support enabled, say Y, otherwise say N.
 778
 779	  To compile this driver as a module, choose M here: the
 780	  module will be called imx_sc_wdt.
 781
 782config IMX7ULP_WDT
 783	tristate "IMX7ULP Watchdog"
 784	depends on ARCH_MXC || COMPILE_TEST
 785	select WATCHDOG_CORE
 786	help
 787	  This is the driver for the hardware watchdog on the Freescale
 788	  IMX7ULP and later processors. If you have one of these
 789	  processors and wish to have watchdog support enabled,
 790	  say Y, otherwise say N.
 791
 792	  To compile this driver as a module, choose M here: the
 793	  module will be called imx7ulp_wdt.
 794
 795config DB500_WATCHDOG
 796	tristate "ST-Ericsson DB800 watchdog"
 797	depends on MFD_DB8500_PRCMU
 798	select WATCHDOG_CORE
 799	default y
 800	help
 801	  Say Y here to include Watchdog timer support for the watchdog
 802	  existing in the prcmu of ST-Ericsson DB8500 platform.
 803
 804	  To compile this driver as a module, choose M here: the
 805	  module will be called db500_wdt.
 806
 807config RETU_WATCHDOG
 808	tristate "Retu watchdog"
 809	depends on MFD_RETU
 810	select WATCHDOG_CORE
 811	help
 812	  Retu watchdog driver for Nokia Internet Tablets (770, N800,
 813	  N810). At least on N800 the watchdog cannot be disabled, so
 814	  this driver is essential and you should enable it.
 815
 816	  To compile this driver as a module, choose M here: the
 817	  module will be called retu_wdt.
 818
 819config MOXART_WDT
 820	tristate "MOXART watchdog"
 821	depends on ARCH_MOXART || COMPILE_TEST
 822	help
 823	  Say Y here to include Watchdog timer support for the watchdog
 824	  existing on the MOXA ART SoC series platforms.
 825
 826	  To compile this driver as a module, choose M here: the
 827	  module will be called moxart_wdt.
 828
 829config ST_LPC_WATCHDOG
 830	tristate "STMicroelectronics LPC Watchdog"
 831	depends on ARCH_STI || COMPILE_TEST
 832	depends on OF
 833	select WATCHDOG_CORE
 
 834	help
 835	  Say Y here to include STMicroelectronics Low Power Controller
 836	  (LPC) based Watchdog timer support.
 837
 838	  To compile this driver as a module, choose M here: the
 839	  module will be called st_lpc_wdt.
 840
 841config TEGRA_WATCHDOG
 842	tristate "Tegra watchdog"
 843	depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
 844	select WATCHDOG_CORE
 845	help
 846	  Say Y here to include support for the watchdog timer
 847	  embedded in NVIDIA Tegra SoCs.
 848
 849	  To compile this driver as a module, choose M here: the
 850	  module will be called tegra_wdt.
 851
 852config QCOM_WDT
 853	tristate "QCOM watchdog"
 854	depends on HAS_IOMEM
 855	depends on ARCH_QCOM || COMPILE_TEST
 856	select WATCHDOG_CORE
 857	help
 858	  Say Y here to include Watchdog timer support for the watchdog found
 859	  on QCOM chipsets.  Currently supported targets are the MSM8960,
 860	  APQ8064, and IPQ8064.
 861
 862	  To compile this driver as a module, choose M here: the
 863	  module will be called qcom_wdt.
 864
 865config MESON_GXBB_WATCHDOG
 866	tristate "Amlogic Meson GXBB SoCs watchdog support"
 867	depends on ARCH_MESON || COMPILE_TEST
 868	select WATCHDOG_CORE
 869	help
 870	  Say Y here to include support for the watchdog timer
 871	  in Amlogic Meson GXBB SoCs.
 872	  To compile this driver as a module, choose M here: the
 873	  module will be called meson_gxbb_wdt.
 874
 875config MESON_WATCHDOG
 876	tristate "Amlogic Meson SoCs watchdog support"
 877	depends on ARCH_MESON || COMPILE_TEST
 878	select WATCHDOG_CORE
 879	help
 880	  Say Y here to include support for the watchdog timer
 881	  in Amlogic Meson SoCs.
 882	  To compile this driver as a module, choose M here: the
 883	  module will be called meson_wdt.
 884
 885config MEDIATEK_WATCHDOG
 886	tristate "Mediatek SoCs watchdog support"
 887	depends on ARCH_MEDIATEK || COMPILE_TEST
 888	default ARCH_MEDIATEK
 889	select WATCHDOG_CORE
 890	select RESET_CONTROLLER
 891	help
 892	  Say Y here to include support for the watchdog timer
 893	  in Mediatek SoCs.
 894	  To compile this driver as a module, choose M here: the
 895	  module will be called mtk_wdt.
 896
 897config DIGICOLOR_WATCHDOG
 898	tristate "Conexant Digicolor SoCs watchdog support"
 899	depends on ARCH_DIGICOLOR || COMPILE_TEST
 900	select WATCHDOG_CORE
 901	help
 902	  Say Y here to include support for the watchdog timer
 903	  in Conexant Digicolor SoCs.
 904	  To compile this driver as a module, choose M here: the
 905	  module will be called digicolor_wdt.
 906
 907config ARM_SMC_WATCHDOG
 908	tristate "ARM Secure Monitor Call based watchdog support"
 909	depends on ARM || ARM64
 910	depends on OF
 911	depends on HAVE_ARM_SMCCC
 912	select WATCHDOG_CORE
 913	help
 914	  Say Y here to include support for a watchdog timer
 915	  implemented by the EL3 Secure Monitor on ARM platforms.
 916	  Requires firmware support.
 917	  To compile this driver as a module, choose M here: the
 918	  module will be called arm_smc_wdt.
 919
 920config LPC18XX_WATCHDOG
 921	tristate "LPC18xx/43xx Watchdog"
 922	depends on ARCH_LPC18XX || COMPILE_TEST
 923	depends on HAS_IOMEM
 924	select WATCHDOG_CORE
 925	help
 926	  Say Y here if to include support for the watchdog timer
 927	  in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
 928	  processors.
 929	  To compile this driver as a module, choose M here: the
 930	  module will be called lpc18xx_wdt.
 931
 932config RENESAS_WDT
 933	tristate "Renesas WDT Watchdog"
 934	depends on ARCH_RENESAS || COMPILE_TEST
 935	select WATCHDOG_CORE
 936	help
 937	  This driver adds watchdog support for the integrated watchdogs in the
 938	  Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
 939
 940config RENESAS_RZAWDT
 941	tristate "Renesas RZ/A WDT Watchdog"
 942	depends on ARCH_RENESAS || COMPILE_TEST
 943	select WATCHDOG_CORE
 944	help
 945	  This driver adds watchdog support for the integrated watchdogs in the
 946	  Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
 947
 948config RENESAS_RZN1WDT
 949	tristate "Renesas RZ/N1 watchdog"
 950	depends on ARCH_RENESAS || COMPILE_TEST
 951	select WATCHDOG_CORE
 952	help
 953	  This driver adds watchdog support for the integrated watchdogs in the
 954	  Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
 955
 956config RENESAS_RZG2LWDT
 957	tristate "Renesas RZ/G2L WDT Watchdog"
 958	depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
 959	depends on PM || COMPILE_TEST
 960	select WATCHDOG_CORE
 961	help
 962	  This driver adds watchdog support for the integrated watchdogs in the
 963	  Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
 964
 965config RENESAS_RZV2HWDT
 966	tristate "Renesas RZ/V2H(P) WDT Watchdog"
 967	depends on ARCH_R9A09G057 || COMPILE_TEST
 968	depends on PM || COMPILE_TEST
 969	select WATCHDOG_CORE
 970	help
 971	  This driver adds watchdog support for the integrated watchdogs in the
 972	  Renesas RZ/V2H(P) SoCs. These watchdogs can be used to reset a system.
 973
 974config ASPEED_WATCHDOG
 975	tristate "Aspeed BMC watchdog support"
 976	depends on ARCH_ASPEED || COMPILE_TEST
 977	select WATCHDOG_CORE
 978	help
 979	  Say Y here to include support for the watchdog timer
 980	  in Aspeed BMC SoCs.
 981
 982	  This driver is required to reboot the SoC.
 983
 984	  To compile this driver as a module, choose M here: the
 985	  module will be called aspeed_wdt.
 986
 987config STM32_WATCHDOG
 988	tristate "STM32 Independent WatchDoG (IWDG) support"
 989	depends on ARCH_STM32 || COMPILE_TEST
 990	select WATCHDOG_CORE
 991	default y
 992	help
 993	  Say Y here to include support for the watchdog timer
 994	  in stm32 SoCs.
 995
 996	  To compile this driver as a module, choose M here: the
 997	  module will be called stm32_iwdg.
 998
 999config STPMIC1_WATCHDOG
1000	tristate "STPMIC1 PMIC watchdog support"
1001	depends on MFD_STPMIC1
1002	select WATCHDOG_CORE
1003	help
1004	  Say Y here to include watchdog support embedded into STPMIC1 PMIC.
1005	  If the watchdog timer expires, stpmic1 will shut down all its power
1006	  supplies.
1007
1008	  To compile this driver as a module, choose M here: the
1009	  module will be called spmic1_wdt.
1010
1011config UNIPHIER_WATCHDOG
1012	tristate "UniPhier watchdog support"
1013	depends on ARCH_UNIPHIER || COMPILE_TEST
1014	depends on OF && MFD_SYSCON
1015	select WATCHDOG_CORE
1016	help
1017	  Say Y here to include support watchdog timer embedded
1018	  into the UniPhier system.
1019
1020	  To compile this driver as a module, choose M here: the
1021	  module will be called uniphier_wdt.
1022
1023config RTD119X_WATCHDOG
1024	bool "Realtek RTD119x/RTD129x watchdog support"
1025	depends on ARCH_REALTEK || COMPILE_TEST
1026	depends on OF
1027	select WATCHDOG_CORE
1028	default ARCH_REALTEK
1029	help
1030	  Say Y here to include support for the watchdog timer in
1031	  Realtek RTD1295 SoCs.
1032
1033config REALTEK_OTTO_WDT
1034	tristate "Realtek Otto MIPS watchdog support"
1035	depends on MACH_REALTEK_RTL || COMPILE_TEST
1036	depends on COMMON_CLK
1037	select WATCHDOG_CORE
1038	default MACH_REALTEK_RTL
1039	help
1040	  Say Y here to include support for the watchdog timer on Realtek
1041	  RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
1042	  notifications and system reset on timeout.
1043
1044	  When built as a module this will be called realtek_otto_wdt.
1045
1046config SPRD_WATCHDOG
1047	tristate "Spreadtrum watchdog support"
1048	depends on ARCH_SPRD || COMPILE_TEST
1049	select WATCHDOG_CORE
1050	help
1051	  Say Y here to include watchdog timer supported
1052	  by Spreadtrum system.
1053
1054config PM8916_WATCHDOG
1055	tristate "QCOM PM8916 pmic watchdog"
1056	depends on OF && MFD_SPMI_PMIC
1057	select WATCHDOG_CORE
1058	help
1059	  Say Y here to include support watchdog timer embedded into the
1060	  pm8916 module.
1061
1062config VISCONTI_WATCHDOG
1063	tristate "Toshiba Visconti series watchdog support"
1064	depends on ARCH_VISCONTI || COMPILE_TEST
1065	select WATCHDOG_CORE
1066	help
1067	  Say Y here to include support for the watchdog timer in Toshiba
1068	  Visconti SoCs.
1069
1070config MSC313E_WATCHDOG
1071	tristate "MStar MSC313e watchdog"
1072	depends on ARCH_MSTARV7 || COMPILE_TEST
1073	select WATCHDOG_CORE
1074	help
1075	  Say Y here to include support for the Watchdog timer embedded
1076	  into MStar MSC313e chips. This will reboot your system when the
1077	  timeout is reached.
1078
1079	  To compile this driver as a module, choose M here: the
1080	  module will be called msc313e_wdt.
1081
1082config APPLE_WATCHDOG
1083	tristate "Apple SoC watchdog"
1084	depends on ARCH_APPLE || COMPILE_TEST
1085	select WATCHDOG_CORE
1086	help
1087	  Say Y here to include support for the Watchdog found in Apple
1088	  SoCs such as the M1. Next to the common watchdog features this
1089	  driver is also required in order to reboot these SoCs.
1090
1091	  To compile this driver as a module, choose M here: the
1092	  module will be called apple_wdt.
1093
1094config SUNPLUS_WATCHDOG
1095	tristate "Sunplus watchdog support"
1096	depends on ARCH_SUNPLUS || COMPILE_TEST
1097	select WATCHDOG_CORE
1098	help
1099	  Say Y here to include support for the watchdog timer
1100	  in Sunplus SoCs.
1101
1102	  To compile this driver as a module, choose M here: the
1103	  module will be called sunplus_wdt.
1104
1105# X86 (i386 + ia64 + x86_64) Architecture
1106
1107config ACQUIRE_WDT
1108	tristate "Acquire SBC Watchdog Timer"
1109	depends on X86
1110	help
1111	  This is the driver for the hardware watchdog on Single Board
1112	  Computers produced by Acquire Inc (and others). This watchdog
1113	  simply watches your kernel to make sure it doesn't freeze, and if
1114	  it does, it reboots your computer after a certain amount of time.
1115
1116	  To compile this driver as a module, choose M here: the
1117	  module will be called acquirewdt.
1118
1119	  Most people will say N.
1120
1121config ADVANTECH_WDT
1122	tristate "Advantech SBC Watchdog Timer"
1123	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1124	help
1125	  If you are configuring a Linux kernel for the Advantech single-board
1126	  computer, say `Y' here to support its built-in watchdog timer
1127	  feature. More information can be found at
1128	  <https://www.advantech.com.tw/products/>
1129
1130config ADVANTECH_EC_WDT
1131	tristate "Advantech Embedded Controller Watchdog Timer"
1132	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1133	select ISA_BUS_API
1134	select WATCHDOG_CORE
1135	help
1136		This driver supports Advantech products with ITE based Embedded Controller.
1137		It does not support Advantech products with other ECs or without EC.
1138
1139config ALIM1535_WDT
1140	tristate "ALi M1535 PMU Watchdog Timer"
1141	depends on (X86 || COMPILE_TEST) && PCI
1142	help
1143	  This is the driver for the hardware watchdog on the ALi M1535 PMU.
1144
1145	  To compile this driver as a module, choose M here: the
1146	  module will be called alim1535_wdt.
1147
1148	  Most people will say N.
1149
1150config ALIM7101_WDT
1151	tristate "ALi M7101 PMU Computer Watchdog"
1152	depends on PCI
1153	help
1154	  This is the driver for the hardware watchdog on the ALi M7101 PMU
1155	  as used in the x86 Cobalt servers and also found in some
1156	  SPARC Netra servers too.
1157
1158	  To compile this driver as a module, choose M here: the
1159	  module will be called alim7101_wdt.
1160
1161	  Most people will say N.
1162
1163config CGBC_WDT
1164	tristate "Congatec Board Controller Watchdog Timer"
1165	depends on MFD_CGBC
1166	select WATCHDOG_CORE
1167	help
1168	  Enables watchdog timer support for the Congatec Board Controller.
1169
1170	  This driver can also be built as a module. If so, the module will be
1171	  called cgbc_wdt.
1172
1173config EBC_C384_WDT
1174	tristate "WinSystems EBC-C384 Watchdog Timer"
1175	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1176	select ISA_BUS_API
1177	select WATCHDOG_CORE
1178	help
1179	  Enables watchdog timer support for the watchdog timer on the
1180	  WinSystems EBC-C384 motherboard. The timeout may be configured via
1181	  the timeout module parameter.
1182
1183config EXAR_WDT
1184	tristate "Exar Watchdog Timer"
1185	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1186	select WATCHDOG_CORE
1187	help
1188	  Enables watchdog timer support for the watchdog timer present
1189	  in some Exar/MaxLinear UART chips like the XR28V38x.
1190
1191	  To compile this driver as a module, choose M here: the
1192	  module will be called exar_wdt.
1193
1194config F71808E_WDT
1195	tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1196	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1197	select WATCHDOG_CORE
1198	help
1199	  This is the driver for the hardware watchdog on the Fintek F71808E,
1200	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1201	  F81866 Super I/O controllers.
1202
1203	  You can compile this driver directly into the kernel, or use
1204	  it as a module.  The module will be called f71808e_wdt.
1205
1206config SP5100_TCO
1207	tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1208	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1209	select WATCHDOG_CORE
1210	help
1211	  Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1212	  (Total Cost of Ownership) timer is a watchdog timer that will reboot
1213	  the machine after its expiration. The expiration time can be
1214	  configured with the "heartbeat" parameter.
1215
1216	  To compile this driver as a module, choose M here: the
1217	  module will be called sp5100_tco.
1218
1219config GEODE_WDT
1220	tristate "AMD Geode CS5535/CS5536 Watchdog"
1221	depends on CS5535_MFGPT
1222	help
1223	  This driver enables a watchdog capability built into the
1224	  CS5535/CS5536 companion chips for the AMD Geode GX and LX
1225	  processors.  This watchdog watches your kernel to make sure
1226	  it doesn't freeze, and if it does, it reboots your computer after
1227	  a certain amount of time.
1228
1229	  You can compile this driver directly into the kernel, or use
1230	  it as a module.  The module will be called geodewdt.
1231
1232config SC520_WDT
1233	tristate "AMD Elan SC520 processor Watchdog"
1234	depends on MELAN || COMPILE_TEST
1235	help
1236	  This is the driver for the hardware watchdog built in to the
1237	  AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1238	  This watchdog simply watches your kernel to make sure it doesn't
1239	  freeze, and if it does, it reboots your computer after a certain
1240	  amount of time.
1241
1242	  You can compile this driver directly into the kernel, or use
1243	  it as a module.  The module will be called sc520_wdt.
1244
1245config SBC_FITPC2_WATCHDOG
1246	tristate "Compulab SBC-FITPC2 watchdog"
1247	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1248	help
1249	  This is the driver for the built-in watchdog timer on the fit-PC2,
1250	  fit-PC2i, CM-iAM single-board computers made by Compulab.
1251
1252	  It's possible to enable the watchdog timer either from BIOS (F2) or
1253	  from booted Linux.
1254	  When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1255	  operational range.
1256
1257	  Entering BIOS setup temporarily disables watchdog operation regardless
1258	  of current state, so system will not be restarted while user is in
1259	  BIOS setup.
1260
1261	  Once the watchdog is enabled the system will be restarted every
 
 
 
1262	  "Watchdog Timer Value" period, so to prevent it user can restart or
1263	  disable the watchdog.
1264
1265	  To compile this driver as a module, choose M here: the
1266	  module will be called sbc_fitpc2_wdt.
1267
1268	  Most people will say N.
1269
1270config EUROTECH_WDT
1271	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1272	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1273	help
1274	  Enable support for the watchdog timer on the Eurotech CPU-1220 and
1275	  CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
1276	  information are at <http://www.eurotech.it/>.
1277
1278config IB700_WDT
1279	tristate "IB700 SBC Watchdog Timer"
1280	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1281	help
1282	  This is the driver for the hardware watchdog on the IB700 Single
1283	  Board Computer produced by TMC Technology (www.tmc-uk.com). This
1284	  watchdog simply watches your kernel to make sure it doesn't freeze,
1285	  and if it does, it reboots your computer after a certain amount of time.
1286
1287	  This driver is like the WDT501 driver but for slightly different
1288	  hardware.
1289
1290	  To compile this driver as a module, choose M here: the
1291	  module will be called ib700wdt.
1292
1293	  Most people will say N.
1294
1295config IBMASR
1296	tristate "IBM Automatic Server Restart"
1297	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1298	help
1299	  This is the driver for the IBM Automatic Server Restart watchdog
1300	  timer built-in into some eServer xSeries machines.
1301
1302	  To compile this driver as a module, choose M here: the
1303	  module will be called ibmasr.
1304
1305config WAFER_WDT
1306	tristate "ICP Single Board Computer Watchdog Timer"
1307	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1308	help
1309	  This is a driver for the hardware watchdog on the ICP Single
1310	  Board Computer. This driver is working on (at least) the following
1311	  IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1312
1313	  To compile this driver as a module, choose M here: the
1314	  module will be called wafer5823wdt.
1315
1316config I6300ESB_WDT
1317	tristate "Intel 6300ESB Timer/Watchdog"
1318	depends on PCI
1319	select WATCHDOG_CORE
1320	help
1321	  Hardware driver for the watchdog timer built into the Intel
1322	  6300ESB controller hub.
1323
1324	  To compile this driver as a module, choose M here: the
1325	  module will be called i6300esb.
1326
1327config IE6XX_WDT
1328	tristate "Intel Atom E6xx Watchdog"
1329	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1330	select WATCHDOG_CORE
1331	select MFD_CORE
1332	select LPC_SCH
1333	help
1334	  Hardware driver for the watchdog timer built into the Intel
1335	  Atom E6XX (TunnelCreek) processor.
1336
1337	  To compile this driver as a module, choose M here: the
1338	  module will be called ie6xx_wdt.
1339
1340config INTEL_MID_WATCHDOG
1341	tristate "Intel MID Watchdog Timer"
1342	depends on X86_INTEL_MID
1343	select WATCHDOG_CORE
1344	help
1345	  Watchdog timer driver built into the Intel SCU for Intel MID
1346	  Platforms.
1347
1348	  This driver currently supports only the watchdog evolution
1349	  implementation in SCU, available for Merrifield generation.
1350
1351	  To compile this driver as a module, choose M here.
1352
1353config ITCO_WDT
1354	tristate "Intel TCO Timer/Watchdog"
1355	depends on X86 && PCI
1356	select WATCHDOG_CORE
1357	depends on I2C || I2C=n
1358	depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1359	depends on HAS_IOPORT # for I2C_I801
1360	select LPC_ICH if !EXPERT
1361	select I2C_I801 if !EXPERT && I2C
1362	help
1363	  Hardware driver for the intel TCO timer based watchdog devices.
1364	  These drivers are included in the Intel 82801 I/O Controller
1365	  Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1366	  controller hub.
1367
1368	  The TCO (Total Cost of Ownership) timer is a watchdog timer
1369	  that will reboot the machine after its second expiration. The
1370	  expiration time can be configured with the "heartbeat" parameter.
1371
1372	  On some motherboards the driver may fail to reset the chipset's
1373	  NO_REBOOT flag which prevents the watchdog from rebooting the
1374	  machine. If this is the case you will get a kernel message like
1375	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1376
1377	  To compile this driver as a module, choose M here: the
1378	  module will be called iTCO_wdt.
1379
1380config ITCO_VENDOR_SUPPORT
1381	bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1382	depends on ITCO_WDT
1383	help
1384	  Add vendor specific support to the intel TCO timer based watchdog
1385	  devices. At this moment we only have additional support for some
1386	  SuperMicro Inc. motherboards.
1387
1388config IT8712F_WDT
1389	tristate "IT8712F (Smart Guardian) Watchdog Timer"
1390	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1391	help
1392	  This is the driver for the built-in watchdog timer on the IT8712F
1393	  Super I/0 chipset used on many motherboards.
1394
1395	  If the driver does not work, then make sure that the game port in
1396	  the BIOS is enabled.
1397
1398	  To compile this driver as a module, choose M here: the
1399	  module will be called it8712f_wdt.
1400
1401config IT87_WDT
1402	tristate "IT87 Watchdog Timer"
1403	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1404	select WATCHDOG_CORE
1405	help
1406	  This is the driver for the hardware watchdog on the ITE IT8607,
1407	  IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1408	  IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1409	  IT8783 Super I/O chips.
 
1410
1411	  This watchdog simply watches your kernel to make sure it doesn't
1412	  freeze, and if it does, it reboots your computer after a certain
1413	  amount of time.
1414
1415	  To compile this driver as a module, choose M here: the module will
1416	  be called it87_wdt.
1417
1418config HP_WATCHDOG
1419	tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1420	select WATCHDOG_CORE
1421	depends on (ARM64 || X86 || COMPILE_TEST) && PCI
1422	help
1423	  A software monitoring watchdog and NMI handling driver. This driver
1424	  will detect lockups and provide a stack trace. This is a driver that
1425	  will only load on an HP ProLiant system with a minimum of iLO2 support.
1426	  To compile this driver as a module, choose M here: the module will be
1427	  called hpwdt.
1428
1429config HPWDT_NMI_DECODING
1430	bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1431	depends on X86 && HP_WATCHDOG
1432	default y
1433	help
1434	  Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1435	  "Generate NMI to System" virtual button.  When an NMI is claimed
1436	  by the driver, panic is called.
1437
1438config KEMPLD_WDT
1439	tristate "Kontron COM Watchdog Timer"
1440	depends on MFD_KEMPLD
1441	select WATCHDOG_CORE
1442	help
1443	  Support for the PLD watchdog on some Kontron ETX and COMexpress
1444	  (ETXexpress) modules
1445
1446	  This driver can also be built as a module. If so, the module will be
1447	  called kempld_wdt.
1448
 
 
 
 
 
 
 
 
1449config SC1200_WDT
1450	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1451	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1452	help
1453	  This is a driver for National Semiconductor PC87307/PC97307 hardware
1454	  watchdog cards as found on the SC1200. This watchdog is mainly used
1455	  for power management purposes and can be used to power down the device
1456	  during inactivity periods (includes interrupt activity monitoring).
1457
1458	  To compile this driver as a module, choose M here: the
1459	  module will be called sc1200wdt.
1460
1461	  Most people will say N.
1462
1463config SCx200_WDT
1464	tristate "National Semiconductor SCx200 Watchdog"
1465	depends on SCx200 && PCI
1466	help
1467	  Enable the built-in watchdog timer support on the National
1468	  Semiconductor SCx200 processors.
1469
1470	  If compiled as a module, it will be called scx200_wdt.
1471
1472config PC87413_WDT
1473	tristate "NS PC87413 watchdog"
1474	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1475	help
1476	  This is the driver for the hardware watchdog on the PC87413 chipset
1477	  This watchdog simply watches your kernel to make sure it doesn't
1478	  freeze, and if it does, it reboots your computer after a certain
1479	  amount of time.
1480
1481	  To compile this driver as a module, choose M here: the
1482	  module will be called pc87413_wdt.
1483
1484	  Most people will say N.
1485
1486config NV_TCO
1487	tristate "nVidia TCO Timer/Watchdog"
1488	depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1489	help
1490	  Hardware driver for the TCO timer built into the nVidia Hub family
1491	  (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
1492	  watchdog timer that will reboot the machine after its second
1493	  expiration. The expiration time can be configured with the
1494	  "heartbeat" parameter.
1495
1496	  On some motherboards the driver may fail to reset the chipset's
1497	  NO_REBOOT flag which prevents the watchdog from rebooting the
1498	  machine. If this is the case you will get a kernel message like
1499	  "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1500
1501	  To compile this driver as a module, choose M here: the
1502	  module will be called nv_tco.
1503
1504config RDC321X_WDT
1505	tristate "RDC R-321x SoC watchdog"
1506	depends on X86_RDC321X || COMPILE_TEST
1507	depends on PCI
1508	help
1509	  This is the driver for the built in hardware watchdog
1510	  in the RDC R-321x SoC.
1511
1512	  To compile this driver as a module, choose M here: the
1513	  module will be called rdc321x_wdt.
1514
1515config 60XX_WDT
1516	tristate "SBC-60XX Watchdog Timer"
1517	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1518	help
1519	  This driver can be used with the watchdog timer found on some
1520	  single board computers, namely the 6010 PII based computer.
1521	  It may well work with other cards.  It reads port 0x443 to enable
1522	  and re-set the watchdog timer, and reads port 0x45 to disable
1523	  the watchdog.  If you have a card that behave in similar ways,
1524	  you can probably make this driver work with your card as well.
1525
1526	  You can compile this driver directly into the kernel, or use
1527	  it as a module.  The module will be called sbc60xxwdt.
1528
1529config SBC8360_WDT
1530	tristate "SBC8360 Watchdog Timer"
1531	depends on X86_32 && HAS_IOPORT
1532	help
1533
1534	  This is the driver for the hardware watchdog on the SBC8360 Single
1535	  Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1536
1537	  To compile this driver as a module, choose M here: the
1538	  module will be called sbc8360.
1539
1540	  Most people will say N.
1541
1542config SBC7240_WDT
1543	tristate "SBC Nano 7240 Watchdog Timer"
1544	depends on X86_32 && HAS_IOPORT
1545	help
1546	  This is the driver for the hardware watchdog found on the IEI
1547	  single board computers EPIC Nano 7240 (and likely others). This
1548	  watchdog simply watches your kernel to make sure it doesn't freeze,
1549	  and if it does, it reboots your computer after a certain amount of
1550	  time.
1551
1552	  To compile this driver as a module, choose M here: the
1553	  module will be called sbc7240_wdt.
1554
 
 
 
 
 
 
 
 
1555config SMSC_SCH311X_WDT
1556	tristate "SMSC SCH311X Watchdog Timer"
1557	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1558	help
1559	  This is the driver for the hardware watchdog timer on the
1560	  SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1561	  (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1562	  serial ports).
1563
1564	  To compile this driver as a module, choose M here: the
1565	  module will be called sch311x_wdt.
1566
1567config SMSC37B787_WDT
1568	tristate "Winbond SMsC37B787 Watchdog Timer"
1569	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1570	help
1571	  This is the driver for the hardware watchdog component on the
1572	  Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1573	  from Vision Systems and maybe others.
1574
1575	  This watchdog simply watches your kernel to make sure it doesn't
1576	  freeze, and if it does, it reboots your computer after a certain
1577	  amount of time.
1578
1579	  Usually a userspace daemon will notify the kernel WDT driver that
1580	  userspace is still alive, at regular intervals.
1581
1582	  To compile this driver as a module, choose M here: the
1583	  module will be called smsc37b787_wdt.
1584
1585	  Most people will say N.
1586
1587config TQMX86_WDT
1588	tristate "TQ-Systems TQMX86 Watchdog Timer"
1589	depends on X86 || COMPILE_TEST
1590	select WATCHDOG_CORE
1591	help
1592	  This is the driver for the hardware watchdog timer in the TQMX86 IO
1593	  controller found on some of their ComExpress Modules.
1594
1595	  To compile this driver as a module, choose M here; the module
1596	  will be called tqmx86_wdt.
1597
1598	  Most people will say N.
1599
1600config VIA_WDT
1601	tristate "VIA Watchdog Timer"
1602	depends on (X86 || COMPILE_TEST) && PCI
1603	select WATCHDOG_CORE
1604	help
1605	  This is the driver for the hardware watchdog timer on VIA
1606	  southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1607
1608	  To compile this driver as a module, choose M here; the module
1609	  will be called via_wdt.
1610
1611	  Most people will say N.
1612
1613config W83627HF_WDT
1614	tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1615	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1616	select WATCHDOG_CORE
1617	help
1618	  This is the driver for the hardware watchdog on the following
1619	  Super I/O chips.
1620		W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1621		W83637HF
1622		W83667HG/HG-B
1623		W83687THF
1624		W83697HF
1625		W83697UG
1626		NCT6775
1627		NCT6776
1628		NCT6779
1629		NCT6791
1630		NCT6792
1631		NCT6102D/04D/06D
1632		NCT6116D
1633
1634	  This watchdog simply watches your kernel to make sure it doesn't
1635	  freeze, and if it does, it reboots your computer after a certain
1636	  amount of time.
1637
1638	  To compile this driver as a module, choose M here: the
1639	  module will be called w83627hf_wdt.
1640
1641	  Most people will say N.
1642
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1643config W83877F_WDT
1644	tristate "W83877F (EMACS) Watchdog Timer"
1645	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1646	help
1647	  This is the driver for the hardware watchdog on the W83877F chipset
1648	  as used in EMACS PC-104 motherboards (and likely others).  This
1649	  watchdog simply watches your kernel to make sure it doesn't freeze,
1650	  and if it does, it reboots your computer after a certain amount of
1651	  time.
1652
1653	  To compile this driver as a module, choose M here: the
1654	  module will be called w83877f_wdt.
1655
1656	  Most people will say N.
1657
1658config W83977F_WDT
1659	tristate "W83977F (PCM-5335) Watchdog Timer"
1660	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1661	help
1662	  This is the driver for the hardware watchdog on the W83977F I/O chip
1663	  as used in AAEON's PCM-5335 SBC (and likely others).  This
1664	  watchdog simply watches your kernel to make sure it doesn't freeze,
1665	  and if it does, it reboots your computer after a certain amount of
1666	  time.
1667
1668	  To compile this driver as a module, choose M here: the
1669	  module will be called w83977f_wdt.
1670
1671config MACHZ_WDT
1672	tristate "ZF MachZ Watchdog"
1673	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1674	help
1675	  If you are using a ZF Micro MachZ processor, say Y here, otherwise
1676	  N.  This is the driver for the watchdog timer built-in on that
1677	  processor using ZF-Logic interface.  This watchdog simply watches
1678	  your kernel to make sure it doesn't freeze, and if it does, it
1679	  reboots your computer after a certain amount of time.
1680
1681	  To compile this driver as a module, choose M here: the
1682	  module will be called machzwd.
1683
1684config SBC_EPX_C3_WATCHDOG
1685	tristate "Winsystems SBC EPX-C3 watchdog"
1686	depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1687	help
1688	  This is the driver for the built-in watchdog timer on the EPX-C3
1689	  Single-board computer made by Winsystems, Inc.
1690
1691	  *Note*: This hardware watchdog is not probeable and thus there
1692	  is no way to know if writing to its IO address will corrupt
1693	  your system or have any real effect.  The only way to be sure
1694	  that this driver does what you want is to make sure you
1695	  are running it on an EPX-C3 from Winsystems with the watchdog
1696	  timer at IO address 0x1ee and 0x1ef.  It will write to both those
1697	  IO ports.  Basically, the assumption is made that if you compile
1698	  this driver into your kernel and/or load it as a module, that you
1699	  know what you are doing and that you are in fact running on an
1700	  EPX-C3 board!
1701
1702	  To compile this driver as a module, choose M here: the
1703	  module will be called sbc_epx_c3.
1704
1705config INTEL_MEI_WDT
1706	tristate "Intel MEI iAMT Watchdog"
1707	depends on INTEL_MEI && X86
1708	select WATCHDOG_CORE
1709	help
1710	  A device driver for the Intel MEI iAMT watchdog.
1711
1712	  The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1713	  Whenever the OS hangs or crashes, iAMT will send an event
1714	  to any subscriber to this event. The watchdog doesn't reset the
1715	  the platform.
1716
1717	  To compile this driver as a module, choose M here:
1718	  the module will be called mei_wdt.
1719
1720config NI903X_WDT
1721	tristate "NI 903x/913x Watchdog"
1722	depends on X86 && ACPI
1723	select WATCHDOG_CORE
1724	help
1725	  This is the driver for the watchdog timer on the National Instruments
1726	  903x/913x real-time controllers.
1727
1728	  To compile this driver as a module, choose M here: the module will be
1729	  called ni903x_wdt.
1730
1731config NIC7018_WDT
1732	tristate "NIC7018 Watchdog"
1733	depends on X86 && ACPI
1734	select WATCHDOG_CORE
1735	help
1736	  Support for National Instruments NIC7018 Watchdog.
1737
1738	  To compile this driver as a module, choose M here: the module will be
1739	  called nic7018_wdt.
1740
1741config SIEMENS_SIMATIC_IPC_WDT
1742	tristate "Siemens Simatic IPC Watchdog"
1743	depends on SIEMENS_SIMATIC_IPC && PCI
1744	default y
1745	select WATCHDOG_CORE
1746	select P2SB if X86
1747	help
1748	  This driver adds support for several watchdogs found in Industrial
1749	  PCs from Siemens.
1750
1751	  To compile this driver as a module, choose M here: the module will be
1752	  called simatic-ipc-wdt.
1753
1754# M68K Architecture
1755
1756config M54xx_WATCHDOG
1757	tristate "MCF54xx watchdog support"
1758	depends on M548x
1759	help
1760	  To compile this driver as a module, choose M here: the
1761	  module will be called m54xx_wdt.
1762
1763# MicroBlaze Architecture
1764
1765# MIPS Architecture
1766
1767config ATH79_WDT
1768	tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1769	depends on ATH79 || (ARM && COMPILE_TEST)
1770	help
1771	  Hardware driver for the built-in watchdog timer on the Atheros
1772	  AR71XX/AR724X/AR913X SoCs.
1773
1774config BCM47XX_WDT
1775	tristate "Broadcom BCM47xx Watchdog Timer"
1776	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1777	select WATCHDOG_CORE
1778	help
1779	  Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1780
1781config RC32434_WDT
1782	tristate "IDT RC32434 SoC Watchdog Timer"
1783	depends on MIKROTIK_RB532
1784	help
1785	  Hardware driver for the IDT RC32434 SoC built-in
1786	  watchdog timer.
1787
1788	  To compile this driver as a module, choose M here: the
1789	  module will be called rc32434_wdt.
1790
1791config INDYDOG
1792	tristate "Indy/I2 Hardware Watchdog"
1793	depends on SGI_HAS_INDYDOG
1794	help
1795	  Hardware driver for the Indy's/I2's watchdog. This is a
1796	  watchdog timer that will reboot the machine after a 60 second
1797	  timer expired and no process has written to /dev/watchdog during
1798	  that time.
1799
1800config JZ4740_WDT
1801	tristate "Ingenic jz4740 SoC hardware watchdog"
1802	depends on MIPS || COMPILE_TEST
1803	depends on COMMON_CLK
1804	select WATCHDOG_CORE
1805	select MFD_SYSCON
1806	help
1807	  Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1808
1809config WDT_MTX1
1810	tristate "MTX-1 Hardware Watchdog"
1811	depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1812	help
1813	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
1814	  will reboot the machine after a 100 seconds timer expired.
1815
 
 
 
 
 
 
 
 
 
1816config SIBYTE_WDOG
1817	tristate "Sibyte SoC hardware watchdog"
1818	depends on CPU_SB1
1819	help
1820	  Watchdog driver for the built in watchdog hardware in Sibyte
1821	  SoC processors.  There are apparently two watchdog timers
1822	  on such processors; this driver supports only the first one,
1823	  because currently Linux only supports exporting one watchdog
1824	  to userspace.
1825
1826	  To compile this driver as a loadable module, choose M here.
1827	  The module will be called sb_wdog.
1828
 
 
 
 
 
 
1829config TXX9_WDT
1830	tristate "Toshiba TXx9 Watchdog Timer"
1831	depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1832	select WATCHDOG_CORE
1833	help
1834	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1835
1836config OCTEON_WDT
1837	tristate "Cavium OCTEON SOC family Watchdog Timer"
1838	depends on CAVIUM_OCTEON_SOC
1839	default y
1840	select WATCHDOG_CORE
1841	select EXPORT_UASM if OCTEON_WDT = m
1842	help
1843	  Hardware driver for OCTEON's on chip watchdog timer.
1844	  Enables the watchdog for all cores running Linux. It
1845	  installs a NMI handler and pokes the watchdog based on an
1846	  interrupt.  On first expiration of the watchdog, the
1847	  interrupt handler pokes it.  The second expiration causes an
1848	  NMI that prints a message. The third expiration causes a
1849	  global soft reset.
1850
1851	  When userspace has /dev/watchdog open, no poking is done
1852	  from the first interrupt, it is then only poked when the
1853	  device is written.
1854
1855config MARVELL_GTI_WDT
1856	tristate "Marvell GTI Watchdog driver"
1857	depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
1858	default y
1859	select WATCHDOG_CORE
1860	help
1861	  Marvell GTI hardware supports watchdog timer. First timeout
1862	  works as watchdog pretimeout and installed interrupt handler
1863	  will be called on first timeout. Hardware can generate interrupt
1864	  to SCP on second timeout but it is not enabled, so second
1865	  timeout is ignored. If device poke does not happen then system
1866	  will reboot on third timeout.
1867
1868config BCM2835_WDT
1869	tristate "Broadcom BCM2835 hardware watchdog"
1870	depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1871	select WATCHDOG_CORE
1872	help
1873	  Watchdog driver for the built in watchdog hardware in Broadcom
1874	  BCM2835 SoC.
1875
1876	  To compile this driver as a loadable module, choose M here.
1877	  The module will be called bcm2835_wdt.
1878
1879config BCM_KONA_WDT
1880	tristate "BCM Kona Watchdog"
1881	depends on ARCH_BCM_MOBILE || COMPILE_TEST
1882	select WATCHDOG_CORE
1883	help
1884	  Support for the watchdog timer on the following Broadcom BCM281xx
1885	  family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1886	  BCM28155 variants.
1887
1888	  Say 'Y' or 'M' here to enable the driver. The module will be called
1889	  bcm_kona_wdt.
1890
1891config BCM_KONA_WDT_DEBUG
1892	bool "DEBUGFS support for BCM Kona Watchdog"
1893	depends on BCM_KONA_WDT || COMPILE_TEST
1894	help
1895	  If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1896	  access to the driver's internal data structures as well as watchdog
1897	  timer hardware registres.
1898
1899	  If in doubt, say 'N'.
1900
1901config BCM7038_WDT
1902	tristate "BCM63xx/BCM7038 Watchdog"
1903	select WATCHDOG_CORE
1904	depends on HAS_IOMEM
1905	depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1906	help
1907	  Watchdog driver for the built-in hardware in Broadcom 7038 and
1908	  later SoCs used in set-top boxes.  BCM7038 was made public
1909	  during the 2004 CES, and since then, many Broadcom chips use this
1910	  watchdog block, including some cable modem chips and DSL (63xx)
1911	  chips.
1912
1913config IMGPDC_WDT
1914	tristate "Imagination Technologies PDC Watchdog Timer"
1915	depends on HAS_IOMEM
1916	depends on MIPS || COMPILE_TEST
1917	select WATCHDOG_CORE
1918	help
1919	  Driver for Imagination Technologies PowerDown Controller
1920	  Watchdog Timer.
1921
1922	  To compile this driver as a loadable module, choose M here.
1923	  The module will be called imgpdc_wdt.
1924
1925config LANTIQ_WDT
1926	tristate "Lantiq SoC watchdog"
1927	depends on LANTIQ
1928	select WATCHDOG_CORE
1929	help
1930	  Hardware driver for the Lantiq SoC Watchdog Timer.
1931
1932config LOONGSON1_WDT
1933	tristate "Loongson1 SoC hardware watchdog"
1934	depends on MACH_LOONGSON32 || COMPILE_TEST
1935	select WATCHDOG_CORE
1936	help
1937	  Hardware driver for the Loongson1 SoC Watchdog Timer.
1938
1939config RALINK_WDT
1940	tristate "Ralink SoC watchdog"
1941	select WATCHDOG_CORE
1942	depends on RALINK
1943	help
1944	  Hardware driver for the Ralink SoC Watchdog Timer.
1945
1946config GXP_WATCHDOG
1947	tristate "HPE GXP watchdog support"
1948	depends on ARCH_HPE_GXP || COMPILE_TEST
1949	select WATCHDOG_CORE
1950	help
1951	  Say Y here to include support for the watchdog timer
1952	  in HPE GXP SoCs.
1953
1954	  To compile this driver as a module, choose M here.
1955	  The module will be called gxp-wdt.
1956
1957config MT7621_WDT
1958	tristate "Mediatek SoC watchdog"
1959	select WATCHDOG_CORE
1960	select REGMAP_MMIO
1961	select MFD_SYSCON
1962	depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1963	help
1964	  Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1965
1966config PIC32_WDT
1967	tristate "Microchip PIC32 hardware watchdog"
1968	select WATCHDOG_CORE
1969	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1970	help
1971	  Watchdog driver for the built in watchdog hardware in a PIC32.
1972
1973	  Configuration bits must be set appropriately for the watchdog to be
1974	  controlled by this driver.
1975
1976	  To compile this driver as a loadable module, choose M here.
1977	  The module will be called pic32-wdt.
1978
1979config PIC32_DMT
1980	tristate "Microchip PIC32 Deadman Timer"
1981	select WATCHDOG_CORE
1982	depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1983	help
1984	  Watchdog driver for PIC32 instruction fetch counting timer. This
1985	  specific timer is typically be used in mission critical and safety
1986	  critical applications, where any single failure of the software
1987	  functionality and sequencing must be detected.
1988
1989	  To compile this driver as a loadable module, choose M here.
1990	  The module will be called pic32-dmt.
1991
1992# PARISC Architecture
1993
1994# POWERPC Architecture
1995
1996config GEF_WDT
1997	tristate "GE Watchdog Timer"
1998	depends on GE_FPGA
1999	help
2000	  Watchdog timer found in a number of GE single board computers.
2001
2002config MPC5200_WDT
2003	bool "MPC52xx Watchdog Timer"
2004	depends on PPC_MPC52xx || COMPILE_TEST
2005	help
2006	  Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
2007
2008config 8xxx_WDT
2009	tristate "MPC8xxx Platform Watchdog Timer"
2010	depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
2011	select WATCHDOG_CORE
2012	help
2013	  This driver is for a SoC level watchdog that exists on some
2014	  Freescale PowerPC processors. So far this driver supports:
2015	  - MPC8xx watchdogs
2016	  - MPC83xx watchdogs
2017	  - MPC86xx watchdogs
2018
2019	  For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
2020
 
 
 
 
2021config PIKA_WDT
2022	tristate "PIKA FPGA Watchdog"
2023	depends on WARP || (PPC64 && COMPILE_TEST)
2024	default y
2025	help
2026	  This enables the watchdog in the PIKA FPGA. Currently used on
2027	  the Warp platform.
2028
2029config BOOKE_WDT
2030	tristate "PowerPC Book-E Watchdog Timer"
2031	depends on BOOKE || 4xx
2032	select WATCHDOG_CORE
2033	help
2034	  Watchdog driver for PowerPC Book-E chips, such as the Freescale
2035	  MPC85xx SOCs and the IBM PowerPC 440.
2036
2037	  Please see Documentation/watchdog/watchdog-api.rst for
2038	  more information.
2039
2040config BOOKE_WDT_DEFAULT_TIMEOUT
2041	int "PowerPC Book-E Watchdog Timer Default Timeout"
2042	depends on BOOKE_WDT
2043	default 38 if PPC_E500
2044	range 0 63 if PPC_E500
2045	default 3 if !PPC_E500
2046	range 0 3 if !PPC_E500
2047	help
2048	  Select the default watchdog timer period to be used by the PowerPC
2049	  Book-E watchdog driver.  A watchdog "event" occurs when the bit
2050	  position represented by this number transitions from zero to one.
2051
2052	  For Freescale Book-E processors, this is a number between 0 and 63.
2053	  For other Book-E processors, this is a number between 0 and 3.
2054
2055	  The value can be overridden by the wdt_period command-line parameter.
2056
2057config MEN_A21_WDT
2058	tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
2059	select WATCHDOG_CORE
2060	depends on GPIOLIB || COMPILE_TEST
2061	help
2062	  Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
2063
2064	  The driver can also be built as a module. If so, the module will be
2065	  called mena21_wdt.
2066
2067	  If unsure select N here.
2068
2069# PPC64 Architecture
2070
2071config PSERIES_WDT
2072	tristate "POWER Architecture Platform Watchdog Timer"
2073	depends on PPC_PSERIES
2074	select WATCHDOG_CORE
2075	help
2076	  Driver for virtual watchdog timers provided by PAPR
2077	  hypervisors (e.g. PowerVM, KVM).
2078
2079config WATCHDOG_RTAS
2080	tristate "RTAS watchdog"
2081	depends on PPC_RTAS
2082	help
2083	  This driver adds watchdog support for the RTAS watchdog.
2084
2085	  To compile this driver as a module, choose M here. The module
2086	  will be called wdrtas.
2087
2088# RISC-V Architecture
2089
2090config STARFIVE_WATCHDOG
2091	tristate "StarFive Watchdog support"
2092	depends on ARCH_STARFIVE || COMPILE_TEST
2093	select WATCHDOG_CORE
2094	default ARCH_STARFIVE
2095	help
2096	  Say Y here to support the watchdog of StarFive JH7100 and JH7110
2097	  SoC. This driver can also be built as a module if choose M.
2098
2099# S390 Architecture
2100
2101config DIAG288_WATCHDOG
2102	tristate "System z diag288 Watchdog"
2103	depends on S390
2104	select WATCHDOG_CORE
2105	help
2106	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
2107	  provide a virtual watchdog timer to their guest that cause a
2108	  user define Control Program command to be executed after a
2109	  timeout.
2110	  LPAR provides a very similar interface. This driver handles
2111	  both.
2112
2113	  To compile this driver as a module, choose M here. The module
2114	  will be called diag288_wdt.
2115
2116# SUPERH (sh + sh64) Architecture
2117
2118config SH_WDT
2119	tristate "SuperH Watchdog"
2120	depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2121	select WATCHDOG_CORE
2122	help
2123	  This driver adds watchdog support for the integrated watchdog in the
2124	  SuperH processors. If you have one of these processors and wish
2125	  to have watchdog support enabled, say Y, otherwise say N.
2126
2127	  As a side note, saying Y here will automatically boost HZ to 1000
2128	  so that the timer has a chance to clear the overflow counter. On
2129	  slower systems (such as the SH-2 and SH-3) this will likely yield
2130	  some performance issues. As such, the WDT should be avoided here
2131	  unless it is absolutely necessary.
2132
2133	  To compile this driver as a module, choose M here: the
2134	  module will be called shwdt.
2135
2136# SPARC Architecture
2137
2138# SPARC64 Architecture
2139
2140config WATCHDOG_CP1XXX
2141	tristate "CP1XXX Hardware Watchdog support"
2142	depends on SPARC64 && PCI
2143	help
2144	  This is the driver for the hardware watchdog timers present on
2145	  Sun Microsystems CompactPCI models CP1400 and CP1500.
2146
2147	  To compile this driver as a module, choose M here: the
2148	  module will be called cpwatchdog.
2149
2150	  If you do not have a CompactPCI model CP1400 or CP1500, or
2151	  another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2152	  you should say N to this option.
2153
2154config WATCHDOG_RIO
2155	tristate "RIO Hardware Watchdog support"
2156	depends on SPARC64 && PCI
2157	help
2158	  Say Y here to support the hardware watchdog capability on Sun RIO
2159	  machines.  The watchdog timeout period is normally one minute but
2160	  can be changed with a boot-time parameter.
2161
2162config WATCHDOG_SUN4V
2163	tristate "Sun4v Watchdog support"
2164	select WATCHDOG_CORE
2165	depends on SPARC64
2166	help
2167	  Say Y here to support the hypervisor watchdog capability embedded
2168	  in the SPARC sun4v architecture.
2169
2170	  To compile this driver as a module, choose M here. The module will
2171	  be called sun4v_wdt.
2172
2173# XTENSA Architecture
2174
2175# Xen Architecture
2176
2177config XEN_WDT
2178	tristate "Xen Watchdog support"
2179	depends on XEN
2180	select WATCHDOG_CORE
2181	help
2182	  Say Y here to support the hypervisor watchdog capability provided
2183	  by Xen 4.0 and newer.  The watchdog timeout period is normally one
2184	  minute but can be changed with a boot-time parameter.
2185
2186config UML_WATCHDOG
2187	tristate "UML watchdog"
2188	depends on UML || COMPILE_TEST
2189
2190#
2191# ISA-based Watchdog Cards
2192#
2193
2194comment "ISA-based Watchdog Cards"
2195	depends on ISA
2196
2197config PCWATCHDOG
2198	tristate "Berkshire Products ISA-PC Watchdog"
2199	depends on ISA
2200	help
2201	  This is the driver for the Berkshire Products ISA-PC Watchdog card.
2202	  This card simply watches your kernel to make sure it doesn't freeze,
2203	  and if it does, it reboots your computer after a certain amount of
2204	  time. This driver is like the WDT501 driver but for different
2205	  hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2206	  The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2207
2208	  To compile this driver as a module, choose M here: the
2209	  module will be called pcwd.
2210
2211	  Most people will say N.
2212
2213config MIXCOMWD
2214	tristate "Mixcom Watchdog"
2215	depends on ISA
2216	help
2217	  This is a driver for the Mixcom hardware watchdog cards.  This
2218	  watchdog simply watches your kernel to make sure it doesn't freeze,
2219	  and if it does, it reboots your computer after a certain amount of
2220	  time.
2221
2222	  To compile this driver as a module, choose M here: the
2223	  module will be called mixcomwd.
2224
2225	  Most people will say N.
2226
2227config WDT
2228	tristate "WDT Watchdog timer"
2229	depends on ISA
2230	help
2231	  If you have a WDT500P or WDT501P watchdog board, say Y here,
2232	  otherwise N. It is not possible to probe for this board, which means
2233	  that you have to inform the kernel about the IO port and IRQ that
2234	  is needed (you can do this via the io and irq parameters)
2235
2236	  To compile this driver as a module, choose M here: the
2237	  module will be called wdt.
2238
2239#
2240# PCI-based Watchdog Cards
2241#
2242
2243comment "PCI-based Watchdog Cards"
2244	depends on PCI
2245
2246config PCIPCWATCHDOG
2247	tristate "Berkshire Products PCI-PC Watchdog"
2248	depends on PCI && HAS_IOPORT
2249	help
2250	  This is the driver for the Berkshire Products PCI-PC Watchdog card.
2251	  This card simply watches your kernel to make sure it doesn't freeze,
2252	  and if it does, it reboots your computer after a certain amount of
2253	  time. The card can also monitor the internal temperature of the PC.
2254	  More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2255
2256	  To compile this driver as a module, choose M here: the
2257	  module will be called pcwd_pci.
2258
2259	  Most people will say N.
2260
2261config WDTPCI
2262	tristate "PCI-WDT500/501 Watchdog timer"
2263	depends on PCI && HAS_IOPORT
2264	help
2265	  If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2266
2267	  If you have a PCI-WDT501 watchdog board then you can enable the
2268	  temperature sensor by setting the type parameter to 501.
2269
2270	  If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2271	  can do this via the tachometer parameter. Only do this if you have a
2272	  fan tachometer actually set up.
2273
2274	  To compile this driver as a module, choose M here: the
2275	  module will be called wdt_pci.
2276
2277#
2278# USB-based Watchdog Cards
2279#
2280
2281comment "USB-based Watchdog Cards"
2282	depends on USB
2283
2284config USBPCWATCHDOG
2285	tristate "Berkshire Products USB-PC Watchdog"
2286	depends on USB
2287	help
2288	  This is the driver for the Berkshire Products USB-PC Watchdog card.
2289	  This card simply watches your kernel to make sure it doesn't freeze,
2290	  and if it does, it reboots your computer after a certain amount of
2291	  time. The card can also monitor the internal temperature of the PC.
2292	  More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2293
2294	  To compile this driver as a module, choose M here: the
2295	  module will be called pcwd_usb.
2296
2297	  Most people will say N.
2298
2299config KEEMBAY_WATCHDOG
2300	tristate "Intel Keem Bay SoC non-secure watchdog"
2301	depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2302	select WATCHDOG_CORE
2303	help
2304	  This option enable support for an In-secure watchdog timer driver for
2305	  Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2306	  count unit. An interrupt will be triggered, when the count crosses
2307	  the threshold configured in the register.
2308
2309	  To compile this driver as a module, choose M here: the
2310	  module will be called keembay_wdt.
2311
2312endif # WATCHDOG