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 (ACPI && GPIOLIB) || OF_GPIO 254 select WATCHDOG_CORE 255 help 256 If you say yes here you get support for watchdog device 257 controlled through GPIO-line. 258 259config GPIO_WATCHDOG_ARCH_INITCALL 260 bool "Register the watchdog as early as possible" 261 depends on GPIO_WATCHDOG=y 262 help 263 In some situations, the default initcall level (module_init) 264 in not early enough in the boot process to avoid the watchdog 265 to be triggered. 266 If you say yes here, the initcall level would be raised to 267 arch_initcall. 268 If in doubt, say N. 269 270config LENOVO_SE10_WDT 271 tristate "Lenovo SE10 Watchdog" 272 depends on (X86 && DMI) || COMPILE_TEST 273 depends on HAS_IOPORT 274 select WATCHDOG_CORE 275 help 276 If you say yes here you get support for the watchdog 277 functionality for the Lenovo SE10 platform. 278 279 This driver can also be built as a module. If so, the module 280 will be called lenovo-se10-wdt. 281 282config LENOVO_SE30_WDT 283 tristate "Lenovo SE30 Watchdog" 284 depends on (X86 && DMI) || COMPILE_TEST 285 depends on HAS_IOPORT 286 select WATCHDOG_CORE 287 help 288 If you say yes here you get support for the watchdog 289 functionality for the Lenovo SE30 platform. 290 291 This driver can also be built as a module. If so, the module 292 will be called lenovo-se30-wdt. 293 294config MENF21BMC_WATCHDOG 295 tristate "MEN 14F021P00 BMC Watchdog" 296 depends on MFD_MENF21BMC || COMPILE_TEST 297 depends on I2C 298 select WATCHDOG_CORE 299 help 300 Say Y here to include support for the MEN 14F021P00 BMC Watchdog. 301 302 This driver can also be built as a module. If so the module 303 will be called menf21bmc_wdt. 304 305config MENZ069_WATCHDOG 306 tristate "MEN 16Z069 Watchdog" 307 depends on MCB 308 select WATCHDOG_CORE 309 help 310 Say Y here to include support for the MEN 16Z069 Watchdog. 311 312 This driver can also be built as a module. If so the module 313 will be called menz069_wdt. 314 315config WDAT_WDT 316 tristate "ACPI Watchdog Action Table (WDAT)" 317 depends on ACPI 318 select WATCHDOG_CORE 319 select ACPI_WATCHDOG 320 help 321 This driver adds support for systems with ACPI Watchdog Action 322 Table (WDAT) table. Servers typically have this but it can be 323 found on some desktop machines as well. This driver will take 324 over the native iTCO watchdog driver found on many Intel CPUs. 325 326 To compile this driver as module, choose M here: the module will 327 be called wdat_wdt. 328 329config WM831X_WATCHDOG 330 tristate "WM831x watchdog" 331 depends on MFD_WM831X 332 select WATCHDOG_CORE 333 help 334 Support for the watchdog in the WM831x AudioPlus PMICs. When 335 the watchdog triggers the system will be reset. 336 337config WM8350_WATCHDOG 338 tristate "WM8350 watchdog" 339 depends on MFD_WM8350 340 select WATCHDOG_CORE 341 help 342 Support for the watchdog in the WM8350 AudioPlus PMIC. When 343 the watchdog triggers the system will be reset. 344 345config XILINX_WATCHDOG 346 tristate "Xilinx Watchdog timer" 347 depends on HAS_IOMEM 348 select WATCHDOG_CORE 349 help 350 Watchdog driver for the xps_timebase_wdt IP core. 351 352 To compile this driver as a module, choose M here: the 353 module will be called of_xilinx_wdt. 354 355config XILINX_WINDOW_WATCHDOG 356 tristate "Xilinx window watchdog timer" 357 depends on HAS_IOMEM 358 depends on ARM64 || COMPILE_TEST 359 select WATCHDOG_CORE 360 help 361 Window watchdog driver for the versal_wwdt IP core. 362 Window watchdog timer(WWDT) contains closed(first) and 363 open(second) window with 32 bit width. Write to the watchdog 364 timer within predefined window periods of time. This means 365 a period that is not too soon and a period that is not too 366 late. The WWDT has to be restarted within the open window time. 367 If software tries to restart WWDT outside of the open window 368 time period, it generates a reset. 369 370 To compile this driver as a module, choose M here: the 371 module will be called xilinx_wwdt. 372 373config ZIIRAVE_WATCHDOG 374 tristate "Zodiac RAVE Watchdog Timer" 375 depends on I2C 376 select WATCHDOG_CORE 377 help 378 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog 379 Processor. 380 381 To compile this driver as a module, choose M here: the 382 module will be called ziirave_wdt. 383 384config RAVE_SP_WATCHDOG 385 tristate "RAVE SP Watchdog timer" 386 depends on RAVE_SP_CORE 387 depends on NVMEM || !NVMEM 388 select WATCHDOG_CORE 389 help 390 Support for the watchdog on RAVE SP device. 391 392config MLX_WDT 393 tristate "Mellanox Watchdog" 394 depends on MELLANOX_PLATFORM || COMPILE_TEST 395 select WATCHDOG_CORE 396 select REGMAP 397 help 398 This is the driver for the hardware watchdog on Mellanox systems. 399 If you are going to use it, say Y here, otherwise N. 400 This driver can be used together with the watchdog daemon. 401 It can also watch your kernel to make sure it doesn't freeze, 402 and if it does, it reboots your system after a certain amount of 403 time. 404 405 To compile this driver as a module, choose M here: the 406 module will be called mlx-wdt. 407 408config SL28CPLD_WATCHDOG 409 tristate "Kontron sl28cpld Watchdog" 410 depends on MFD_SL28CPLD || COMPILE_TEST 411 select WATCHDOG_CORE 412 help 413 Say Y here to include support for the watchdog timer 414 on the Kontron sl28 CPLD. 415 416 To compile this driver as a module, choose M here: the 417 module will be called sl28cpld_wdt. 418 419# ALPHA Architecture 420 421# ARM Architecture 422 423config AIROHA_WATCHDOG 424 tristate "Airoha EN7581 Watchdog" 425 depends on ARCH_AIROHA || COMPILE_TEST 426 select WATCHDOG_CORE 427 help 428 Watchdog timer embedded into Airoha SoC. This will reboot your 429 system when the timeout is reached. 430 431config ARM_SP805_WATCHDOG 432 tristate "ARM SP805 Watchdog" 433 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA 434 select WATCHDOG_CORE 435 help 436 ARM Primecell SP805 Watchdog timer. This will reboot your system when 437 the timeout is reached. 438 439config ARM_SBSA_WATCHDOG 440 tristate "ARM SBSA Generic Watchdog" 441 depends on ARM64 442 depends on ARM_ARCH_TIMER 443 select WATCHDOG_CORE 444 help 445 ARM SBSA Generic Watchdog has two stage timeouts: 446 the first signal (WS0) is for alerting the system by interrupt, 447 the second one (WS1) is a real hardware reset. 448 More details: ARM DEN0029B - Server Base System Architecture (SBSA) 449 450 This driver can operate ARM SBSA Generic Watchdog as a single stage 451 or a two stages watchdog, it depends on the module parameter "action". 452 453 Note: the maximum timeout in the two stages mode is half of that in 454 the single stage mode. 455 456 To compile this driver as module, choose M here: The module 457 will be called sbsa_gwdt. 458 459config ARMADA_37XX_WATCHDOG 460 tristate "Armada 37xx watchdog" 461 depends on ARCH_MVEBU || COMPILE_TEST 462 depends on HAS_IOMEM 463 select MFD_SYSCON 464 select WATCHDOG_CORE 465 help 466 Say Y here to include support for the watchdog timer found on 467 Marvell Armada 37xx SoCs. 468 To compile this driver as a module, choose M here: the 469 module will be called armada_37xx_wdt. 470 471config ASM9260_WATCHDOG 472 tristate "Alphascale ASM9260 watchdog" 473 depends on MACH_ASM9260 || COMPILE_TEST 474 depends on OF 475 select WATCHDOG_CORE 476 select RESET_CONTROLLER 477 help 478 Watchdog timer embedded into Alphascale asm9260 chips. This will 479 reboot your system when the timeout is reached. 480 481config AT91RM9200_WATCHDOG 482 tristate "AT91RM9200 watchdog" 483 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST 484 help 485 Watchdog timer embedded into AT91RM9200 chips. This will reboot your 486 system when the timeout is reached. 487 488config AT91SAM9X_WATCHDOG 489 tristate "AT91SAM9X / AT91CAP9 watchdog" 490 depends on ARCH_AT91 || COMPILE_TEST 491 select WATCHDOG_CORE 492 help 493 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will 494 reboot your system when the timeout is reached. 495 496config SAMA5D4_WATCHDOG 497 tristate "Atmel SAMA5D4 Watchdog Timer" 498 depends on ARCH_AT91 || COMPILE_TEST 499 select WATCHDOG_CORE 500 help 501 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips. 502 Its Watchdog Timer Mode Register can be written more than once. 503 This will reboot your system when the timeout is reached. 504 505config CADENCE_WATCHDOG 506 tristate "Cadence Watchdog Timer" 507 depends on HAS_IOMEM 508 select WATCHDOG_CORE 509 help 510 Say Y here if you want to include support for the watchdog 511 timer in the Xilinx Zynq. 512 513config 21285_WATCHDOG 514 tristate "DC21285 watchdog" 515 depends on FOOTBRIDGE 516 help 517 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y 518 here if you wish to use this. Alternatively say M to compile the 519 driver as a module, which will be called wdt285. 520 521 This driver does not work on all machines. In particular, early CATS 522 boards have hardware problems that will cause the machine to simply 523 lock up if the watchdog fires. 524 525 "If in doubt, leave it out" - say N. 526 527config 977_WATCHDOG 528 tristate "NetWinder WB83C977 watchdog" 529 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST) 530 depends on HAS_IOPORT 531 help 532 Say Y here to include support for the WB977 watchdog included in 533 NetWinder machines. Alternatively say M to compile the driver as 534 a module, which will be called wdt977. 535 536 Not sure? It's safe to say N. 537 538config FTWDT010_WATCHDOG 539 tristate "Faraday Technology FTWDT010 watchdog" 540 depends on ARM || COMPILE_TEST 541 select WATCHDOG_CORE 542 default ARCH_GEMINI 543 help 544 Say Y here if to include support for the Faraday Technology 545 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini 546 family of devices. 547 548 To compile this driver as a module, choose M here: the 549 module will be called ftwdt010_wdt. 550 551config IXP4XX_WATCHDOG 552 tristate "IXP4xx Watchdog" 553 depends on ARCH_IXP4XX || (ARM && COMPILE_TEST) 554 select WATCHDOG_CORE 555 help 556 Say Y here if to include support for the watchdog timer 557 in the Intel IXP4xx network processors. This driver can 558 be built as a module by choosing M. The module will 559 be called ixp4xx_wdt. 560 561 Note: The internal IXP4xx watchdog does a soft CPU reset 562 which doesn't reset any peripherals. There are circumstances 563 where the watchdog will fail to reset the board correctly 564 (e.g., if the boot ROM is in an unreadable state). 565 566 Say N if you are unsure. 567 568config S3C2410_WATCHDOG 569 tristate "S3C6410/S5Pv210/Exynos Watchdog" 570 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST 571 select WATCHDOG_CORE 572 select MFD_SYSCON if ARCH_EXYNOS 573 help 574 Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos 575 SoCs. This will reboot the system when the timer expires with 576 the watchdog enabled. 577 578 The driver is limited by the speed of the system's PCLK 579 signal, so with reasonably fast systems (PCLK around 50-66MHz) 580 then watchdog intervals of over approximately 20seconds are 581 unavailable. 582 583 Choose Y/M here only if you build for such Samsung SoC. 584 The driver can be built as a module by choosing M, and will 585 be called s3c2410_wdt. 586 587config SA1100_WATCHDOG 588 tristate "SA1100/PXA2xx watchdog" 589 depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST 590 help 591 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will 592 reboot your system when timeout is reached. 593 594 NOTE: once enabled, this timer cannot be disabled. 595 596 To compile this driver as a module, choose M here: the 597 module will be called sa1100_wdt. 598 599config DW_WATCHDOG 600 tristate "Synopsys DesignWare watchdog" 601 depends on HAS_IOMEM 602 select WATCHDOG_CORE 603 help 604 Say Y here if to include support for the Synopsys DesignWare 605 watchdog timer found in many chips. 606 To compile this driver as a module, choose M here: the 607 module will be called dw_wdt. 608 609config EP93XX_WATCHDOG 610 tristate "EP93xx Watchdog" 611 depends on ARCH_EP93XX || COMPILE_TEST 612 select WATCHDOG_CORE 613 help 614 Say Y here if to include support for the watchdog timer 615 embedded in the Cirrus Logic EP93xx family of devices. 616 617 To compile this driver as a module, choose M here: the 618 module will be called ep93xx_wdt. 619 620config OMAP_WATCHDOG 621 tristate "OMAP Watchdog" 622 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST 623 select WATCHDOG_CORE 624 help 625 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. 626 Say 'Y' here to enable the 627 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer. 628 629config PNX4008_WATCHDOG 630 tristate "LPC32XX Watchdog" 631 depends on ARCH_LPC32XX || COMPILE_TEST 632 select WATCHDOG_CORE 633 help 634 Say Y here if to include support for the watchdog timer 635 in the LPC32XX processor. 636 This driver can be built as a module by choosing M. The module 637 will be called pnx4008_wdt. 638 639 Say N if you are unsure. 640 641config DAVINCI_WATCHDOG 642 tristate "DaVinci watchdog" 643 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST 644 select WATCHDOG_CORE 645 help 646 Say Y here if to include support for the watchdog timer 647 in the DaVinci DM644x/DM646x or Keystone processors. 648 To compile this driver as a module, choose M here: the 649 module will be called davinci_wdt. 650 651 NOTE: once enabled, this timer cannot be disabled. 652 Say N if you are unsure. 653 654config K3_RTI_WATCHDOG 655 tristate "Texas Instruments K3 RTI watchdog" 656 depends on ARCH_K3 || COMPILE_TEST 657 select WATCHDOG_CORE 658 help 659 Say Y here if you want to include support for the K3 watchdog 660 timer (RTI module) available in the K3 generation of processors. 661 662config ORION_WATCHDOG 663 tristate "Orion watchdog" 664 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST 665 depends on ARM 666 select WATCHDOG_CORE 667 help 668 Say Y here if to include support for the watchdog timer 669 in the Marvell Orion5x and Kirkwood ARM SoCs. 670 To compile this driver as a module, choose M here: the 671 module will be called orion_wdt. 672 673config RN5T618_WATCHDOG 674 tristate "Ricoh RN5T618 watchdog" 675 depends on MFD_RN5T618 || COMPILE_TEST 676 select WATCHDOG_CORE 677 help 678 If you say yes here you get support for watchdog on the Ricoh 679 RN5T618 PMIC. 680 681 This driver can also be built as a module. If so, the module 682 will be called rn5t618_wdt. 683 684config SUNXI_WATCHDOG 685 tristate "Allwinner SoCs watchdog support" 686 depends on ARCH_SUNXI || COMPILE_TEST 687 select WATCHDOG_CORE 688 help 689 Say Y here to include support for the watchdog timer 690 in Allwinner SoCs. 691 To compile this driver as a module, choose M here: the 692 module will be called sunxi_wdt. 693 694config NPCM7XX_WATCHDOG 695 tristate "Nuvoton NPCM750 watchdog" 696 depends on ARCH_NPCM || COMPILE_TEST 697 default y if ARCH_NPCM7XX 698 select WATCHDOG_CORE 699 help 700 Say Y here to include Watchdog timer support for the 701 watchdog embedded into the NPCM7xx. 702 This watchdog is used to reset the system and thus cannot be 703 compiled as a module. 704 705config TWL4030_WATCHDOG 706 tristate "TWL4030 Watchdog" 707 depends on TWL4030_CORE 708 select WATCHDOG_CORE 709 help 710 Support for TI TWL4030 watchdog. Say 'Y' here to enable the 711 watchdog timer support for TWL4030 chips. 712 713config STMP3XXX_RTC_WATCHDOG 714 tristate "Freescale STMP3XXX & i.MX23/28 watchdog" 715 depends on RTC_DRV_STMP || COMPILE_TEST 716 select WATCHDOG_CORE 717 help 718 Say Y here to include support for the watchdog timer inside 719 the RTC for the STMP37XX/378X or i.MX23/28 SoC. 720 To compile this driver as a module, choose M here: the 721 module will be called stmp3xxx_rtc_wdt. 722 723config TS4800_WATCHDOG 724 tristate "TS-4800 Watchdog" 725 depends on HAS_IOMEM && OF 726 depends on SOC_IMX51 || COMPILE_TEST 727 select WATCHDOG_CORE 728 select MFD_SYSCON 729 help 730 Technologic Systems TS-4800 has watchdog timer implemented in 731 an external FPGA. Say Y here if you want to support for the 732 watchdog timer on TS-4800 board. 733 734config TS72XX_WATCHDOG 735 tristate "TS-72XX SBC Watchdog" 736 depends on MACH_TS72XX || COMPILE_TEST 737 select WATCHDOG_CORE 738 help 739 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have 740 watchdog timer implemented in a external CPLD chip. Say Y here 741 if you want to support for the watchdog timer on TS-72XX boards. 742 743 To compile this driver as a module, choose M here: the 744 module will be called ts72xx_wdt. 745 746config MAX63XX_WATCHDOG 747 tristate "Max63xx watchdog" 748 depends on HAS_IOMEM 749 select WATCHDOG_CORE 750 help 751 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer. 752 753config MAX77620_WATCHDOG 754 tristate "Maxim Max77620 Watchdog Timer" 755 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST 756 select WATCHDOG_CORE 757 help 758 This is the driver for the Max77620 watchdog timer. 759 Say 'Y' here to enable the watchdog timer support for 760 MAX77620 chips. To compile this driver as a module, 761 choose M here: the module will be called max77620_wdt. 762 763config NCT6694_WATCHDOG 764 tristate "Nuvoton NCT6694 watchdog support" 765 depends on MFD_NCT6694 766 select WATCHDOG_CORE 767 help 768 Say Y here to support Nuvoton NCT6694 watchdog timer 769 functionality. 770 771 This driver can also be built as a module. If so, the module 772 will be called nct6694_wdt. 773 774config IMX2_WDT 775 tristate "IMX2+ Watchdog" 776 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST 777 select REGMAP_MMIO 778 select WATCHDOG_CORE 779 help 780 This is the driver for the hardware watchdog 781 on the Freescale IMX2 and later processors. 782 If you have one of these processors and wish to have 783 watchdog support enabled, say Y, otherwise say N. 784 785 To compile this driver as a module, choose M here: the 786 module will be called imx2_wdt. 787 788config IMX_SC_WDT 789 tristate "IMX SC Watchdog" 790 depends on HAVE_ARM_SMCCC 791 depends on IMX_SCU || COMPILE_TEST 792 select WATCHDOG_CORE 793 help 794 This is the driver for the system controller watchdog 795 on the NXP i.MX SoCs with system controller inside, the 796 watchdog driver will call ARM SMC API and trap into 797 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware 798 will request system controller to execute the operations. 799 If you have one of these processors and wish to have 800 watchdog support enabled, say Y, otherwise say N. 801 802 To compile this driver as a module, choose M here: the 803 module will be called imx_sc_wdt. 804 805config IMX7ULP_WDT 806 tristate "IMX7ULP Watchdog" 807 depends on ARCH_MXC || COMPILE_TEST 808 select WATCHDOG_CORE 809 help 810 This is the driver for the hardware watchdog on the Freescale 811 IMX7ULP and later processors. If you have one of these 812 processors and wish to have watchdog support enabled, 813 say Y, otherwise say N. 814 815 To compile this driver as a module, choose M here: the 816 module will be called imx7ulp_wdt. 817 818config S32G_WDT 819 tristate "S32G Watchdog" 820 depends on ARCH_S32 || COMPILE_TEST 821 select WATCHDOG_CORE 822 help 823 This is the driver for the hardware watchdog on the NXP 824 S32G platforms. If you wish to have watchdog support 825 enabled, say Y, otherwise say N. 826 827config DB500_WATCHDOG 828 tristate "ST-Ericsson DB800 watchdog" 829 depends on MFD_DB8500_PRCMU 830 select WATCHDOG_CORE 831 default y 832 help 833 Say Y here to include Watchdog timer support for the watchdog 834 existing in the prcmu of ST-Ericsson DB8500 platform. 835 836 To compile this driver as a module, choose M here: the 837 module will be called db500_wdt. 838 839config RETU_WATCHDOG 840 tristate "Retu watchdog" 841 depends on MFD_RETU 842 select WATCHDOG_CORE 843 help 844 Retu watchdog driver for Nokia Internet Tablets (770, N800, 845 N810). At least on N800 the watchdog cannot be disabled, so 846 this driver is essential and you should enable it. 847 848 To compile this driver as a module, choose M here: the 849 module will be called retu_wdt. 850 851config MOXART_WDT 852 tristate "MOXART watchdog" 853 depends on ARCH_MOXART || COMPILE_TEST 854 help 855 Say Y here to include Watchdog timer support for the watchdog 856 existing on the MOXA ART SoC series platforms. 857 858 To compile this driver as a module, choose M here: the 859 module will be called moxart_wdt. 860 861config ST_LPC_WATCHDOG 862 tristate "STMicroelectronics LPC Watchdog" 863 depends on ARCH_STI || COMPILE_TEST 864 depends on OF 865 select WATCHDOG_CORE 866 help 867 Say Y here to include STMicroelectronics Low Power Controller 868 (LPC) based Watchdog timer support. 869 870 To compile this driver as a module, choose M here: the 871 module will be called st_lpc_wdt. 872 873config TEGRA_WATCHDOG 874 tristate "Tegra watchdog" 875 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM 876 select WATCHDOG_CORE 877 help 878 Say Y here to include support for the watchdog timer 879 embedded in NVIDIA Tegra SoCs. 880 881 To compile this driver as a module, choose M here: the 882 module will be called tegra_wdt. 883 884config QCOM_WDT 885 tristate "Qualcomm watchdog" 886 depends on HAS_IOMEM 887 depends on ARCH_QCOM || COMPILE_TEST 888 select WATCHDOG_CORE 889 help 890 Say Y here to include Watchdog timer support for the watchdog found 891 on QCOM chipsets. Currently supported targets are the MSM8960, 892 APQ8064, and IPQ8064. 893 894 To compile this driver as a module, choose M here: the 895 module will be called qcom_wdt. 896 897config MESON_GXBB_WATCHDOG 898 tristate "Amlogic Meson GXBB SoCs watchdog support" 899 depends on ARCH_MESON || COMPILE_TEST 900 select WATCHDOG_CORE 901 help 902 Say Y here to include support for the watchdog timer 903 in Amlogic Meson GXBB SoCs. 904 To compile this driver as a module, choose M here: the 905 module will be called meson_gxbb_wdt. 906 907config MESON_WATCHDOG 908 tristate "Amlogic Meson SoCs watchdog support" 909 depends on ARCH_MESON || COMPILE_TEST 910 select WATCHDOG_CORE 911 help 912 Say Y here to include support for the watchdog timer 913 in Amlogic Meson SoCs. 914 To compile this driver as a module, choose M here: the 915 module will be called meson_wdt. 916 917config MEDIATEK_WATCHDOG 918 tristate "Mediatek SoCs watchdog support" 919 depends on ARCH_MEDIATEK || COMPILE_TEST 920 default ARCH_MEDIATEK 921 select WATCHDOG_CORE 922 select RESET_CONTROLLER 923 help 924 Say Y here to include support for the watchdog timer 925 in Mediatek SoCs. 926 To compile this driver as a module, choose M here: the 927 module will be called mtk_wdt. 928 929config DIGICOLOR_WATCHDOG 930 tristate "Conexant Digicolor SoCs watchdog support" 931 depends on ARCH_DIGICOLOR || COMPILE_TEST 932 select WATCHDOG_CORE 933 help 934 Say Y here to include support for the watchdog timer 935 in Conexant Digicolor SoCs. 936 To compile this driver as a module, choose M here: the 937 module will be called digicolor_wdt. 938 939config ARM_SMC_WATCHDOG 940 tristate "ARM Secure Monitor Call based watchdog support" 941 depends on ARM || ARM64 942 depends on OF 943 depends on HAVE_ARM_SMCCC 944 select WATCHDOG_CORE 945 help 946 Say Y here to include support for a watchdog timer 947 implemented by the EL3 Secure Monitor on ARM platforms. 948 Requires firmware support. 949 To compile this driver as a module, choose M here: the 950 module will be called arm_smc_wdt. 951 952config LPC18XX_WATCHDOG 953 tristate "LPC18xx/43xx Watchdog" 954 depends on ARCH_LPC18XX || COMPILE_TEST 955 depends on HAS_IOMEM 956 select WATCHDOG_CORE 957 help 958 Say Y here if to include support for the watchdog timer 959 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx 960 processors. 961 To compile this driver as a module, choose M here: the 962 module will be called lpc18xx_wdt. 963 964config RENESAS_WDT 965 tristate "Renesas WDT Watchdog" 966 depends on ARCH_RENESAS || COMPILE_TEST 967 select WATCHDOG_CORE 968 help 969 This driver adds watchdog support for the integrated watchdogs in the 970 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT). 971 972config RENESAS_WWDT 973 tristate "Renesas Window WWDT Watchdog" 974 depends on ARCH_RENESAS || COMPILE_TEST 975 select WATCHDOG_CORE 976 help 977 This driver adds watchdog support for a window timer found in some 978 Renesas R-Car Gen3 and later SoCs. 979 980config RENESAS_RZAWDT 981 tristate "Renesas RZ/A WDT Watchdog" 982 depends on ARCH_RENESAS || COMPILE_TEST 983 select WATCHDOG_CORE 984 help 985 This driver adds watchdog support for the integrated watchdogs in the 986 Renesas RZ/A SoCs. These watchdogs can be used to reset a system. 987 988config RENESAS_RZN1WDT 989 tristate "Renesas RZ/N1 watchdog" 990 depends on ARCH_RENESAS || COMPILE_TEST 991 select WATCHDOG_CORE 992 help 993 This driver adds watchdog support for the integrated watchdogs in the 994 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system. 995 996config RENESAS_RZG2LWDT 997 tristate "Renesas RZ/G2L WDT Watchdog" 998 depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST 999 depends on PM || COMPILE_TEST 1000 select WATCHDOG_CORE 1001 help 1002 This driver adds watchdog support for the integrated watchdogs in the 1003 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system. 1004 1005config RENESAS_RZV2HWDT 1006 tristate "Renesas RZ/{G3E,V2H(P)} WDT Watchdog" 1007 depends on ARCH_RENESAS || COMPILE_TEST 1008 depends on PM || COMPILE_TEST 1009 select WATCHDOG_CORE 1010 help 1011 This driver adds watchdog support for the integrated watchdogs in the 1012 Renesas RZ/{G3E,V2H(P)} SoCs. These watchdogs can be used to reset a 1013 system. 1014 1015config ASPEED_WATCHDOG 1016 tristate "Aspeed BMC watchdog support" 1017 depends on ARCH_ASPEED || COMPILE_TEST 1018 select WATCHDOG_CORE 1019 help 1020 Say Y here to include support for the watchdog timer 1021 in Aspeed BMC SoCs. 1022 1023 This driver is required to reboot the SoC. 1024 1025 To compile this driver as a module, choose M here: the 1026 module will be called aspeed_wdt. 1027 1028config STM32_WATCHDOG 1029 tristate "STM32 Independent WatchDoG (IWDG) support" 1030 depends on ARCH_STM32 || COMPILE_TEST 1031 select WATCHDOG_CORE 1032 default ARCH_STM32 1033 help 1034 Say Y here to include support for the watchdog timer 1035 in stm32 SoCs. 1036 1037 To compile this driver as a module, choose M here: the 1038 module will be called stm32_iwdg. 1039 1040config STPMIC1_WATCHDOG 1041 tristate "STPMIC1 PMIC watchdog support" 1042 depends on MFD_STPMIC1 1043 select WATCHDOG_CORE 1044 help 1045 Say Y here to include watchdog support embedded into STPMIC1 PMIC. 1046 If the watchdog timer expires, stpmic1 will shut down all its power 1047 supplies. 1048 1049 To compile this driver as a module, choose M here: the 1050 module will be called spmic1_wdt. 1051 1052config UNIPHIER_WATCHDOG 1053 tristate "UniPhier watchdog support" 1054 depends on ARCH_UNIPHIER || COMPILE_TEST 1055 depends on OF && MFD_SYSCON 1056 select WATCHDOG_CORE 1057 help 1058 Say Y here to include support watchdog timer embedded 1059 into the UniPhier system. 1060 1061 To compile this driver as a module, choose M here: the 1062 module will be called uniphier_wdt. 1063 1064config RTD119X_WATCHDOG 1065 bool "Realtek RTD119x/RTD129x watchdog support" 1066 depends on ARCH_REALTEK || COMPILE_TEST 1067 depends on OF 1068 select WATCHDOG_CORE 1069 default ARCH_REALTEK 1070 help 1071 Say Y here to include support for the watchdog timer in 1072 Realtek RTD1295 SoCs. 1073 1074config REALTEK_OTTO_WDT 1075 tristate "Realtek Otto MIPS watchdog support" 1076 depends on MACH_REALTEK_RTL || COMPILE_TEST 1077 depends on COMMON_CLK 1078 select WATCHDOG_CORE 1079 default MACH_REALTEK_RTL 1080 help 1081 Say Y here to include support for the watchdog timer on Realtek 1082 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout 1083 notifications and system reset on timeout. 1084 1085 When built as a module this will be called realtek_otto_wdt. 1086 1087config SPRD_WATCHDOG 1088 tristate "Spreadtrum watchdog support" 1089 depends on ARCH_SPRD || COMPILE_TEST 1090 select WATCHDOG_CORE 1091 help 1092 Say Y here to include watchdog timer supported 1093 by Spreadtrum system. 1094 1095config PM8916_WATCHDOG 1096 tristate "Qualcomm PM8916 pmic watchdog" 1097 depends on OF && MFD_SPMI_PMIC 1098 select WATCHDOG_CORE 1099 help 1100 Say Y here to include support watchdog timer embedded into the 1101 pm8916 module. 1102 1103config VISCONTI_WATCHDOG 1104 tristate "Toshiba Visconti series watchdog support" 1105 depends on ARCH_VISCONTI || COMPILE_TEST 1106 select WATCHDOG_CORE 1107 help 1108 Say Y here to include support for the watchdog timer in Toshiba 1109 Visconti SoCs. 1110 1111config MSC313E_WATCHDOG 1112 tristate "MStar MSC313e watchdog" 1113 depends on ARCH_MSTARV7 || COMPILE_TEST 1114 select WATCHDOG_CORE 1115 help 1116 Say Y here to include support for the Watchdog timer embedded 1117 into MStar MSC313e chips. This will reboot your system when the 1118 timeout is reached. 1119 1120 To compile this driver as a module, choose M here: the 1121 module will be called msc313e_wdt. 1122 1123config APPLE_WATCHDOG 1124 tristate "Apple SoC watchdog" 1125 depends on ARCH_APPLE || COMPILE_TEST 1126 select WATCHDOG_CORE 1127 help 1128 Say Y here to include support for the Watchdog found in Apple 1129 SoCs such as the M1. Next to the common watchdog features this 1130 driver is also required in order to reboot these SoCs. 1131 1132 To compile this driver as a module, choose M here: the 1133 module will be called apple_wdt. 1134 1135config SUNPLUS_WATCHDOG 1136 tristate "Sunplus watchdog support" 1137 depends on ARCH_SUNPLUS || COMPILE_TEST 1138 select WATCHDOG_CORE 1139 help 1140 Say Y here to include support for the watchdog timer 1141 in Sunplus SoCs. 1142 1143 To compile this driver as a module, choose M here: the 1144 module will be called sunplus_wdt. 1145 1146# X86 (i386 + ia64 + x86_64) Architecture 1147 1148config ACQUIRE_WDT 1149 tristate "Acquire SBC Watchdog Timer" 1150 depends on X86 1151 help 1152 This is the driver for the hardware watchdog on Single Board 1153 Computers produced by Acquire Inc (and others). This watchdog 1154 simply watches your kernel to make sure it doesn't freeze, and if 1155 it does, it reboots your computer after a certain amount of time. 1156 1157 To compile this driver as a module, choose M here: the 1158 module will be called acquirewdt. 1159 1160 Most people will say N. 1161 1162config ADVANTECH_WDT 1163 tristate "Advantech SBC Watchdog Timer" 1164 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1165 help 1166 If you are configuring a Linux kernel for the Advantech single-board 1167 computer, say `Y' here to support its built-in watchdog timer 1168 feature. More information can be found at 1169 <https://www.advantech.com.tw/products/> 1170 1171config ADVANTECH_EC_WDT 1172 tristate "Advantech Embedded Controller Watchdog Timer" 1173 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1174 select ISA_BUS_API 1175 select WATCHDOG_CORE 1176 help 1177 This driver supports Advantech products with ITE based Embedded Controller. 1178 It does not support Advantech products with other ECs or without EC. 1179 1180config ALIM1535_WDT 1181 tristate "ALi M1535 PMU Watchdog Timer" 1182 depends on (X86 || COMPILE_TEST) && PCI 1183 help 1184 This is the driver for the hardware watchdog on the ALi M1535 PMU. 1185 1186 To compile this driver as a module, choose M here: the 1187 module will be called alim1535_wdt. 1188 1189 Most people will say N. 1190 1191config ALIM7101_WDT 1192 tristate "ALi M7101 PMU Computer Watchdog" 1193 depends on PCI 1194 help 1195 This is the driver for the hardware watchdog on the ALi M7101 PMU 1196 as used in the x86 Cobalt servers and also found in some 1197 SPARC Netra servers too. 1198 1199 To compile this driver as a module, choose M here: the 1200 module will be called alim7101_wdt. 1201 1202 Most people will say N. 1203 1204config CGBC_WDT 1205 tristate "Congatec Board Controller Watchdog Timer" 1206 depends on MFD_CGBC 1207 select WATCHDOG_CORE 1208 help 1209 Enables watchdog timer support for the Congatec Board Controller. 1210 1211 This driver can also be built as a module. If so, the module will be 1212 called cgbc_wdt. 1213 1214config EBC_C384_WDT 1215 tristate "WinSystems EBC-C384 Watchdog Timer" 1216 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1217 select ISA_BUS_API 1218 select WATCHDOG_CORE 1219 help 1220 Enables watchdog timer support for the watchdog timer on the 1221 WinSystems EBC-C384 motherboard. The timeout may be configured via 1222 the timeout module parameter. 1223 1224config EXAR_WDT 1225 tristate "Exar Watchdog Timer" 1226 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1227 select WATCHDOG_CORE 1228 help 1229 Enables watchdog timer support for the watchdog timer present 1230 in some Exar/MaxLinear UART chips like the XR28V38x. 1231 1232 To compile this driver as a module, choose M here: the 1233 module will be called exar_wdt. 1234 1235config F71808E_WDT 1236 tristate "Fintek F718xx, F818xx Super I/O Watchdog" 1237 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1238 select WATCHDOG_CORE 1239 help 1240 This is the driver for the hardware watchdog on the Fintek F71808E, 1241 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and 1242 F81866 Super I/O controllers. 1243 1244 You can compile this driver directly into the kernel, or use 1245 it as a module. The module will be called f71808e_wdt. 1246 1247config SP5100_TCO 1248 tristate "AMD/ATI SP5100 TCO Timer/Watchdog" 1249 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT 1250 select WATCHDOG_CORE 1251 help 1252 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO 1253 (Total Cost of Ownership) timer is a watchdog timer that will reboot 1254 the machine after its expiration. The expiration time can be 1255 configured with the "heartbeat" parameter. 1256 1257 To compile this driver as a module, choose M here: the 1258 module will be called sp5100_tco. 1259 1260config GEODE_WDT 1261 tristate "AMD Geode CS5535/CS5536 Watchdog" 1262 depends on CS5535_MFGPT 1263 help 1264 This driver enables a watchdog capability built into the 1265 CS5535/CS5536 companion chips for the AMD Geode GX and LX 1266 processors. This watchdog watches your kernel to make sure 1267 it doesn't freeze, and if it does, it reboots your computer after 1268 a certain amount of time. 1269 1270 You can compile this driver directly into the kernel, or use 1271 it as a module. The module will be called geodewdt. 1272 1273config SBC_FITPC2_WATCHDOG 1274 tristate "Compulab SBC-FITPC2 watchdog" 1275 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1276 help 1277 This is the driver for the built-in watchdog timer on the fit-PC2, 1278 fit-PC2i, CM-iAM single-board computers made by Compulab. 1279 1280 It's possible to enable the watchdog timer either from BIOS (F2) or 1281 from booted Linux. 1282 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds 1283 operational range. 1284 1285 Entering BIOS setup temporarily disables watchdog operation regardless 1286 of current state, so system will not be restarted while user is in 1287 BIOS setup. 1288 1289 Once the watchdog is enabled the system will be restarted every 1290 "Watchdog Timer Value" period, so to prevent it user can restart or 1291 disable the watchdog. 1292 1293 To compile this driver as a module, choose M here: the 1294 module will be called sbc_fitpc2_wdt. 1295 1296 Most people will say N. 1297 1298config EUROTECH_WDT 1299 tristate "Eurotech CPU-1220/1410 Watchdog Timer" 1300 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1301 help 1302 Enable support for the watchdog timer on the Eurotech CPU-1220 and 1303 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product 1304 information are at <http://www.eurotech.it/>. 1305 1306config IB700_WDT 1307 tristate "IB700 SBC Watchdog Timer" 1308 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1309 help 1310 This is the driver for the hardware watchdog on the IB700 Single 1311 Board Computer produced by TMC Technology (www.tmc-uk.com). This 1312 watchdog simply watches your kernel to make sure it doesn't freeze, 1313 and if it does, it reboots your computer after a certain amount of time. 1314 1315 This driver is like the WDT501 driver but for slightly different 1316 hardware. 1317 1318 To compile this driver as a module, choose M here: the 1319 module will be called ib700wdt. 1320 1321 Most people will say N. 1322 1323config IBMASR 1324 tristate "IBM Automatic Server Restart" 1325 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1326 help 1327 This is the driver for the IBM Automatic Server Restart watchdog 1328 timer built-in into some eServer xSeries machines. 1329 1330 To compile this driver as a module, choose M here: the 1331 module will be called ibmasr. 1332 1333config WAFER_WDT 1334 tristate "ICP Single Board Computer Watchdog Timer" 1335 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1336 help 1337 This is a driver for the hardware watchdog on the ICP Single 1338 Board Computer. This driver is working on (at least) the following 1339 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782. 1340 1341 To compile this driver as a module, choose M here: the 1342 module will be called wafer5823wdt. 1343 1344config I6300ESB_WDT 1345 tristate "Intel 6300ESB Timer/Watchdog" 1346 depends on PCI 1347 select WATCHDOG_CORE 1348 help 1349 Hardware driver for the watchdog timer built into the Intel 1350 6300ESB controller hub. 1351 1352 To compile this driver as a module, choose M here: the 1353 module will be called i6300esb. 1354 1355config IE6XX_WDT 1356 tristate "Intel Atom E6xx Watchdog" 1357 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT 1358 select WATCHDOG_CORE 1359 select MFD_CORE 1360 select LPC_SCH 1361 help 1362 Hardware driver for the watchdog timer built into the Intel 1363 Atom E6XX (TunnelCreek) processor. 1364 1365 To compile this driver as a module, choose M here: the 1366 module will be called ie6xx_wdt. 1367 1368config INTEL_MID_WATCHDOG 1369 tristate "Intel MID Watchdog Timer" 1370 depends on X86_INTEL_MID 1371 select WATCHDOG_CORE 1372 help 1373 Watchdog timer driver built into the Intel SCU for Intel MID 1374 Platforms. 1375 1376 This driver currently supports only the watchdog evolution 1377 implementation in SCU, available for Merrifield generation. 1378 1379 To compile this driver as a module, choose M here. 1380 1381config INTEL_OC_WATCHDOG 1382 tristate "Intel OC Watchdog" 1383 depends on (X86 || COMPILE_TEST) && ACPI && HAS_IOPORT 1384 select WATCHDOG_CORE 1385 help 1386 Hardware driver for Intel Over-Clocking watchdog present in 1387 Platform Controller Hub (PCH) chipsets. 1388 1389 To compile this driver as a module, choose M here: the 1390 module will be called intel_oc_wdt. 1391 1392config ITCO_WDT 1393 tristate "Intel TCO Timer/Watchdog" 1394 depends on X86 && PCI 1395 select WATCHDOG_CORE 1396 depends on I2C || I2C=n 1397 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT 1398 depends on HAS_IOPORT # for I2C_I801 1399 select LPC_ICH if !EXPERT 1400 select I2C_I801 if !EXPERT && I2C 1401 help 1402 Hardware driver for the intel TCO timer based watchdog devices. 1403 These drivers are included in the Intel 82801 I/O Controller 1404 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB 1405 controller hub. 1406 1407 The TCO (Total Cost of Ownership) timer is a watchdog timer 1408 that will reboot the machine after its second expiration. The 1409 expiration time can be configured with the "heartbeat" parameter. 1410 1411 On some motherboards the driver may fail to reset the chipset's 1412 NO_REBOOT flag which prevents the watchdog from rebooting the 1413 machine. If this is the case you will get a kernel message like 1414 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1415 1416 To compile this driver as a module, choose M here: the 1417 module will be called iTCO_wdt. 1418 1419config IT8712F_WDT 1420 tristate "IT8712F (Smart Guardian) Watchdog Timer" 1421 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1422 help 1423 This is the driver for the built-in watchdog timer on the IT8712F 1424 Super I/0 chipset used on many motherboards. 1425 1426 If the driver does not work, then make sure that the game port in 1427 the BIOS is enabled. 1428 1429 To compile this driver as a module, choose M here: the 1430 module will be called it8712f_wdt. 1431 1432config IT87_WDT 1433 tristate "IT87 Watchdog Timer" 1434 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1435 select WATCHDOG_CORE 1436 help 1437 This is the driver for the hardware watchdog on the ITE IT8607, 1438 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702, 1439 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and 1440 IT8783 Super I/O chips. 1441 1442 This watchdog simply watches your kernel to make sure it doesn't 1443 freeze, and if it does, it reboots your computer after a certain 1444 amount of time. 1445 1446 To compile this driver as a module, choose M here: the module will 1447 be called it87_wdt. 1448 1449config HP_WATCHDOG 1450 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer" 1451 select WATCHDOG_CORE 1452 depends on (ARM64 || X86 || COMPILE_TEST) && PCI 1453 help 1454 A software monitoring watchdog and NMI handling driver. This driver 1455 will detect lockups and provide a stack trace. This is a driver that 1456 will only load on an HP ProLiant system with a minimum of iLO2 support. 1457 To compile this driver as a module, choose M here: the module will be 1458 called hpwdt. 1459 1460config HPWDT_NMI_DECODING 1461 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer" 1462 depends on X86 && HP_WATCHDOG 1463 default y 1464 help 1465 Enables the NMI handler for the watchdog pretimeout NMI and the iLO 1466 "Generate NMI to System" virtual button. When an NMI is claimed 1467 by the driver, panic is called. 1468 1469config KEMPLD_WDT 1470 tristate "Kontron COM Watchdog Timer" 1471 depends on MFD_KEMPLD 1472 select WATCHDOG_CORE 1473 help 1474 Support for the PLD watchdog on some Kontron ETX and COMexpress 1475 (ETXexpress) modules 1476 1477 This driver can also be built as a module. If so, the module will be 1478 called kempld_wdt. 1479 1480config SC1200_WDT 1481 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" 1482 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1483 help 1484 This is a driver for National Semiconductor PC87307/PC97307 hardware 1485 watchdog cards as found on the SC1200. This watchdog is mainly used 1486 for power management purposes and can be used to power down the device 1487 during inactivity periods (includes interrupt activity monitoring). 1488 1489 To compile this driver as a module, choose M here: the 1490 module will be called sc1200wdt. 1491 1492 Most people will say N. 1493 1494config SCx200_WDT 1495 tristate "National Semiconductor SCx200 Watchdog" 1496 depends on SCx200 && PCI 1497 help 1498 Enable the built-in watchdog timer support on the National 1499 Semiconductor SCx200 processors. 1500 1501 If compiled as a module, it will be called scx200_wdt. 1502 1503config PC87413_WDT 1504 tristate "NS PC87413 watchdog" 1505 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1506 help 1507 This is the driver for the hardware watchdog on the PC87413 chipset 1508 This watchdog simply watches your kernel to make sure it doesn't 1509 freeze, and if it does, it reboots your computer after a certain 1510 amount of time. 1511 1512 To compile this driver as a module, choose M here: the 1513 module will be called pc87413_wdt. 1514 1515 Most people will say N. 1516 1517config NV_TCO 1518 tristate "nVidia TCO Timer/Watchdog" 1519 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT 1520 help 1521 Hardware driver for the TCO timer built into the nVidia Hub family 1522 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a 1523 watchdog timer that will reboot the machine after its second 1524 expiration. The expiration time can be configured with the 1525 "heartbeat" parameter. 1526 1527 On some motherboards the driver may fail to reset the chipset's 1528 NO_REBOOT flag which prevents the watchdog from rebooting the 1529 machine. If this is the case you will get a kernel message like 1530 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1531 1532 To compile this driver as a module, choose M here: the 1533 module will be called nv_tco. 1534 1535config RDC321X_WDT 1536 tristate "RDC R-321x SoC watchdog" 1537 depends on X86_RDC321X || COMPILE_TEST 1538 depends on PCI 1539 help 1540 This is the driver for the built in hardware watchdog 1541 in the RDC R-321x SoC. 1542 1543 To compile this driver as a module, choose M here: the 1544 module will be called rdc321x_wdt. 1545 1546config 60XX_WDT 1547 tristate "SBC-60XX Watchdog Timer" 1548 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1549 help 1550 This driver can be used with the watchdog timer found on some 1551 single board computers, namely the 6010 PII based computer. 1552 It may well work with other cards. It reads port 0x443 to enable 1553 and re-set the watchdog timer, and reads port 0x45 to disable 1554 the watchdog. If you have a card that behave in similar ways, 1555 you can probably make this driver work with your card as well. 1556 1557 You can compile this driver directly into the kernel, or use 1558 it as a module. The module will be called sbc60xxwdt. 1559 1560config SBC8360_WDT 1561 tristate "SBC8360 Watchdog Timer" 1562 depends on X86_32 && HAS_IOPORT 1563 help 1564 1565 This is the driver for the hardware watchdog on the SBC8360 Single 1566 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com). 1567 1568 To compile this driver as a module, choose M here: the 1569 module will be called sbc8360. 1570 1571 Most people will say N. 1572 1573config SBC7240_WDT 1574 tristate "SBC Nano 7240 Watchdog Timer" 1575 depends on X86_32 && HAS_IOPORT 1576 help 1577 This is the driver for the hardware watchdog found on the IEI 1578 single board computers EPIC Nano 7240 (and likely others). This 1579 watchdog simply watches your kernel to make sure it doesn't freeze, 1580 and if it does, it reboots your computer after a certain amount of 1581 time. 1582 1583 To compile this driver as a module, choose M here: the 1584 module will be called sbc7240_wdt. 1585 1586config SMSC_SCH311X_WDT 1587 tristate "SMSC SCH311X Watchdog Timer" 1588 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1589 help 1590 This is the driver for the hardware watchdog timer on the 1591 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset 1592 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple 1593 serial ports). 1594 1595 To compile this driver as a module, choose M here: the 1596 module will be called sch311x_wdt. 1597 1598config SMSC37B787_WDT 1599 tristate "Winbond SMsC37B787 Watchdog Timer" 1600 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1601 help 1602 This is the driver for the hardware watchdog component on the 1603 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard 1604 from Vision Systems and maybe others. 1605 1606 This watchdog simply watches your kernel to make sure it doesn't 1607 freeze, and if it does, it reboots your computer after a certain 1608 amount of time. 1609 1610 Usually a userspace daemon will notify the kernel WDT driver that 1611 userspace is still alive, at regular intervals. 1612 1613 To compile this driver as a module, choose M here: the 1614 module will be called smsc37b787_wdt. 1615 1616 Most people will say N. 1617 1618config TQMX86_WDT 1619 tristate "TQ-Systems TQMX86 Watchdog Timer" 1620 depends on X86 || COMPILE_TEST 1621 select WATCHDOG_CORE 1622 help 1623 This is the driver for the hardware watchdog timer in the TQMX86 IO 1624 controller found on some of their ComExpress Modules. 1625 1626 To compile this driver as a module, choose M here; the module 1627 will be called tqmx86_wdt. 1628 1629 Most people will say N. 1630 1631config VIA_WDT 1632 tristate "VIA Watchdog Timer" 1633 depends on (X86 || COMPILE_TEST) && PCI 1634 select WATCHDOG_CORE 1635 help 1636 This is the driver for the hardware watchdog timer on VIA 1637 southbridge chipset CX700, VX800/VX820 or VX855/VX875. 1638 1639 To compile this driver as a module, choose M here; the module 1640 will be called via_wdt. 1641 1642 Most people will say N. 1643 1644config W83627HF_WDT 1645 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles" 1646 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1647 select WATCHDOG_CORE 1648 help 1649 This is the driver for the hardware watchdog on the following 1650 Super I/O chips. 1651 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG 1652 W83637HF 1653 W83667HG/HG-B 1654 W83687THF 1655 W83697HF 1656 W83697UG 1657 NCT6775 1658 NCT6776 1659 NCT6779 1660 NCT6791 1661 NCT6792 1662 NCT6102D/04D/06D 1663 NCT6116D 1664 1665 This watchdog simply watches your kernel to make sure it doesn't 1666 freeze, and if it does, it reboots your computer after a certain 1667 amount of time. 1668 1669 To compile this driver as a module, choose M here: the 1670 module will be called w83627hf_wdt. 1671 1672 Most people will say N. 1673 1674config W83877F_WDT 1675 tristate "W83877F (EMACS) Watchdog Timer" 1676 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1677 help 1678 This is the driver for the hardware watchdog on the W83877F chipset 1679 as used in EMACS PC-104 motherboards (and likely others). This 1680 watchdog simply watches your kernel to make sure it doesn't freeze, 1681 and if it does, it reboots your computer after a certain amount of 1682 time. 1683 1684 To compile this driver as a module, choose M here: the 1685 module will be called w83877f_wdt. 1686 1687 Most people will say N. 1688 1689config W83977F_WDT 1690 tristate "W83977F (PCM-5335) Watchdog Timer" 1691 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1692 help 1693 This is the driver for the hardware watchdog on the W83977F I/O chip 1694 as used in AAEON's PCM-5335 SBC (and likely others). This 1695 watchdog simply watches your kernel to make sure it doesn't freeze, 1696 and if it does, it reboots your computer after a certain amount of 1697 time. 1698 1699 To compile this driver as a module, choose M here: the 1700 module will be called w83977f_wdt. 1701 1702config SBC_EPX_C3_WATCHDOG 1703 tristate "Winsystems SBC EPX-C3 watchdog" 1704 depends on (X86 || COMPILE_TEST) && HAS_IOPORT 1705 help 1706 This is the driver for the built-in watchdog timer on the EPX-C3 1707 Single-board computer made by Winsystems, Inc. 1708 1709 *Note*: This hardware watchdog is not probeable and thus there 1710 is no way to know if writing to its IO address will corrupt 1711 your system or have any real effect. The only way to be sure 1712 that this driver does what you want is to make sure you 1713 are running it on an EPX-C3 from Winsystems with the watchdog 1714 timer at IO address 0x1ee and 0x1ef. It will write to both those 1715 IO ports. Basically, the assumption is made that if you compile 1716 this driver into your kernel and/or load it as a module, that you 1717 know what you are doing and that you are in fact running on an 1718 EPX-C3 board! 1719 1720 To compile this driver as a module, choose M here: the 1721 module will be called sbc_epx_c3. 1722 1723config INTEL_MEI_WDT 1724 tristate "Intel MEI iAMT Watchdog" 1725 depends on INTEL_MEI && X86 1726 select WATCHDOG_CORE 1727 help 1728 A device driver for the Intel MEI iAMT watchdog. 1729 1730 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog. 1731 Whenever the OS hangs or crashes, iAMT will send an event 1732 to any subscriber to this event. The watchdog doesn't reset the 1733 the platform. 1734 1735 To compile this driver as a module, choose M here: 1736 the module will be called mei_wdt. 1737 1738config NI903X_WDT 1739 tristate "NI 903x/913x Watchdog" 1740 depends on X86 && ACPI 1741 select WATCHDOG_CORE 1742 help 1743 This is the driver for the watchdog timer on the National Instruments 1744 903x/913x real-time controllers. 1745 1746 To compile this driver as a module, choose M here: the module will be 1747 called ni903x_wdt. 1748 1749config NIC7018_WDT 1750 tristate "NIC7018 Watchdog" 1751 depends on HAS_IOPORT 1752 depends on ACPI || COMPILE_TEST 1753 select WATCHDOG_CORE 1754 help 1755 Support for National Instruments NIC7018 Watchdog. 1756 1757 To compile this driver as a module, choose M here: the module will be 1758 called nic7018_wdt. 1759 1760config SIEMENS_SIMATIC_IPC_WDT 1761 tristate "Siemens Simatic IPC Watchdog" 1762 depends on SIEMENS_SIMATIC_IPC && PCI 1763 default y 1764 select WATCHDOG_CORE 1765 select P2SB if X86 1766 help 1767 This driver adds support for several watchdogs found in Industrial 1768 PCs from Siemens. 1769 1770 To compile this driver as a module, choose M here: the module will be 1771 called simatic-ipc-wdt. 1772 1773# M68K Architecture 1774 1775config M54xx_WATCHDOG 1776 tristate "MCF54xx watchdog support" 1777 depends on M548x 1778 help 1779 To compile this driver as a module, choose M here: the 1780 module will be called m54xx_wdt. 1781 1782# MicroBlaze Architecture 1783 1784# MIPS Architecture 1785 1786config ATH79_WDT 1787 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog" 1788 depends on ATH79 || (ARM && COMPILE_TEST) 1789 help 1790 Hardware driver for the built-in watchdog timer on the Atheros 1791 AR71XX/AR724X/AR913X SoCs. 1792 1793config BCM47XX_WDT 1794 tristate "Broadcom BCM47xx Watchdog Timer" 1795 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST 1796 select WATCHDOG_CORE 1797 help 1798 Hardware driver for the Broadcom BCM47xx Watchdog Timer. 1799 1800config RC32434_WDT 1801 tristate "IDT RC32434 SoC Watchdog Timer" 1802 depends on MIKROTIK_RB532 1803 help 1804 Hardware driver for the IDT RC32434 SoC built-in 1805 watchdog timer. 1806 1807 To compile this driver as a module, choose M here: the 1808 module will be called rc32434_wdt. 1809 1810config INDYDOG 1811 tristate "Indy/I2 Hardware Watchdog" 1812 depends on SGI_HAS_INDYDOG 1813 help 1814 Hardware driver for the Indy's/I2's watchdog. This is a 1815 watchdog timer that will reboot the machine after a 60 second 1816 timer expired and no process has written to /dev/watchdog during 1817 that time. 1818 1819config JZ4740_WDT 1820 tristate "Ingenic jz4740 SoC hardware watchdog" 1821 depends on MIPS || COMPILE_TEST 1822 depends on COMMON_CLK 1823 select WATCHDOG_CORE 1824 select MFD_SYSCON 1825 help 1826 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. 1827 1828config WDT_MTX1 1829 tristate "MTX-1 Hardware Watchdog" 1830 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST) 1831 help 1832 Hardware driver for the MTX-1 boards. This is a watchdog timer that 1833 will reboot the machine after a 100 seconds timer expired. 1834 1835config SIBYTE_WDOG 1836 tristate "Sibyte SoC hardware watchdog" 1837 depends on CPU_SB1 1838 help 1839 Watchdog driver for the built in watchdog hardware in Sibyte 1840 SoC processors. There are apparently two watchdog timers 1841 on such processors; this driver supports only the first one, 1842 because currently Linux only supports exporting one watchdog 1843 to userspace. 1844 1845 To compile this driver as a loadable module, choose M here. 1846 The module will be called sb_wdog. 1847 1848config TXX9_WDT 1849 tristate "Toshiba TXx9 Watchdog Timer" 1850 depends on CPU_TX49XX || (MIPS && COMPILE_TEST) 1851 select WATCHDOG_CORE 1852 help 1853 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. 1854 1855config OCTEON_WDT 1856 tristate "Cavium OCTEON SOC family Watchdog Timer" 1857 depends on CAVIUM_OCTEON_SOC 1858 default y 1859 select WATCHDOG_CORE 1860 select EXPORT_UASM if OCTEON_WDT = m 1861 help 1862 Hardware driver for OCTEON's on chip watchdog timer. 1863 Enables the watchdog for all cores running Linux. It 1864 installs a NMI handler and pokes the watchdog based on an 1865 interrupt. On first expiration of the watchdog, the 1866 interrupt handler pokes it. The second expiration causes an 1867 NMI that prints a message. The third expiration causes a 1868 global soft reset. 1869 1870 When userspace has /dev/watchdog open, no poking is done 1871 from the first interrupt, it is then only poked when the 1872 device is written. 1873 1874config MARVELL_GTI_WDT 1875 tristate "Marvell GTI Watchdog driver" 1876 depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT) 1877 default ARCH_THUNDER 1878 select WATCHDOG_CORE 1879 help 1880 Marvell GTI hardware supports watchdog timer. First timeout 1881 works as watchdog pretimeout and installed interrupt handler 1882 will be called on first timeout. Hardware can generate interrupt 1883 to SCP on second timeout but it is not enabled, so second 1884 timeout is ignored. If device poke does not happen then system 1885 will reboot on third timeout. 1886 1887config BCM2835_WDT 1888 tristate "Broadcom BCM2835 hardware watchdog" 1889 depends on ARCH_BCM2835 || (OF && COMPILE_TEST) 1890 select WATCHDOG_CORE 1891 help 1892 Watchdog driver for the built in watchdog hardware in Broadcom 1893 BCM2835 SoC. 1894 1895 To compile this driver as a loadable module, choose M here. 1896 The module will be called bcm2835_wdt. 1897 1898config BCM_KONA_WDT 1899 tristate "BCM Kona Watchdog" 1900 depends on ARCH_BCM_MOBILE || COMPILE_TEST 1901 select WATCHDOG_CORE 1902 help 1903 Support for the watchdog timer on the following Broadcom BCM281xx 1904 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and 1905 BCM28155 variants. 1906 1907 Say 'Y' or 'M' here to enable the driver. The module will be called 1908 bcm_kona_wdt. 1909 1910config BCM_KONA_WDT_DEBUG 1911 bool "DEBUGFS support for BCM Kona Watchdog" 1912 depends on BCM_KONA_WDT || COMPILE_TEST 1913 help 1914 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides 1915 access to the driver's internal data structures as well as watchdog 1916 timer hardware registres. 1917 1918 If in doubt, say 'N'. 1919 1920config BCM7038_WDT 1921 tristate "BCM63xx/BCM7038 Watchdog" 1922 select WATCHDOG_CORE 1923 depends on HAS_IOMEM 1924 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST 1925 help 1926 Watchdog driver for the built-in hardware in Broadcom 7038 and 1927 later SoCs used in set-top boxes. BCM7038 was made public 1928 during the 2004 CES, and since then, many Broadcom chips use this 1929 watchdog block, including some cable modem chips and DSL (63xx) 1930 chips. 1931 1932config IMGPDC_WDT 1933 tristate "Imagination Technologies PDC Watchdog Timer" 1934 depends on HAS_IOMEM 1935 depends on MIPS || COMPILE_TEST 1936 select WATCHDOG_CORE 1937 help 1938 Driver for Imagination Technologies PowerDown Controller 1939 Watchdog Timer. 1940 1941 To compile this driver as a loadable module, choose M here. 1942 The module will be called imgpdc_wdt. 1943 1944config LANTIQ_WDT 1945 tristate "Lantiq SoC watchdog" 1946 depends on LANTIQ 1947 select WATCHDOG_CORE 1948 help 1949 Hardware driver for the Lantiq SoC Watchdog Timer. 1950 1951config LOONGSON1_WDT 1952 tristate "Loongson1 SoC hardware watchdog" 1953 depends on MACH_LOONGSON32 || MACH_LOONGSON64 || COMPILE_TEST 1954 select WATCHDOG_CORE 1955 help 1956 Hardware driver for the Loongson family Watchdog Timer. 1957 1958config RALINK_WDT 1959 tristate "Ralink SoC watchdog" 1960 select WATCHDOG_CORE 1961 depends on RALINK 1962 help 1963 Hardware driver for the Ralink SoC Watchdog Timer. 1964 1965config GXP_WATCHDOG 1966 tristate "HPE GXP watchdog support" 1967 depends on ARCH_HPE_GXP || COMPILE_TEST 1968 select WATCHDOG_CORE 1969 help 1970 Say Y here to include support for the watchdog timer 1971 in HPE GXP SoCs. 1972 1973 To compile this driver as a module, choose M here. 1974 The module will be called gxp-wdt. 1975 1976config MT7621_WDT 1977 tristate "Mediatek SoC watchdog" 1978 select WATCHDOG_CORE 1979 select REGMAP_MMIO 1980 select MFD_SYSCON 1981 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST 1982 help 1983 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer. 1984 1985config PIC32_WDT 1986 tristate "Microchip PIC32 hardware watchdog" 1987 select WATCHDOG_CORE 1988 depends on MACH_PIC32 || COMPILE_TEST 1989 help 1990 Watchdog driver for the built in watchdog hardware in a PIC32. 1991 1992 Configuration bits must be set appropriately for the watchdog to be 1993 controlled by this driver. 1994 1995 To compile this driver as a loadable module, choose M here. 1996 The module will be called pic32-wdt. 1997 1998config PIC32_DMT 1999 tristate "Microchip PIC32 Deadman Timer" 2000 select WATCHDOG_CORE 2001 depends on MACH_PIC32 || COMPILE_TEST 2002 help 2003 Watchdog driver for PIC32 instruction fetch counting timer. This 2004 specific timer is typically be used in mission critical and safety 2005 critical applications, where any single failure of the software 2006 functionality and sequencing must be detected. 2007 2008 To compile this driver as a loadable module, choose M here. 2009 The module will be called pic32-dmt. 2010 2011# PARISC Architecture 2012 2013# POWERPC Architecture 2014 2015config GEF_WDT 2016 tristate "GE Watchdog Timer" 2017 depends on GE_FPGA 2018 help 2019 Watchdog timer found in a number of GE single board computers. 2020 2021config MPC5200_WDT 2022 bool "MPC52xx Watchdog Timer" 2023 depends on PPC_MPC52xx || COMPILE_TEST 2024 help 2025 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog. 2026 2027config 8xxx_WDT 2028 tristate "MPC8xxx Platform Watchdog Timer" 2029 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x 2030 select WATCHDOG_CORE 2031 help 2032 This driver is for a SoC level watchdog that exists on some 2033 Freescale PowerPC processors. So far this driver supports: 2034 - MPC8xx watchdogs 2035 - MPC83xx watchdogs 2036 - MPC86xx watchdogs 2037 2038 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead. 2039 2040config PIKA_WDT 2041 tristate "PIKA FPGA Watchdog" 2042 depends on WARP || (PPC64 && COMPILE_TEST) 2043 default WARP 2044 help 2045 This enables the watchdog in the PIKA FPGA. Currently used on 2046 the Warp platform. 2047 2048config BOOKE_WDT 2049 tristate "PowerPC Book-E Watchdog Timer" 2050 depends on BOOKE || 4xx 2051 select WATCHDOG_CORE 2052 help 2053 Watchdog driver for PowerPC Book-E chips, such as the Freescale 2054 MPC85xx SOCs and the IBM PowerPC 440. 2055 2056 Please see Documentation/watchdog/watchdog-api.rst for 2057 more information. 2058 2059config BOOKE_WDT_DEFAULT_TIMEOUT 2060 int "PowerPC Book-E Watchdog Timer Default Timeout" 2061 depends on BOOKE_WDT 2062 default 38 if PPC_E500 2063 range 0 63 if PPC_E500 2064 default 3 if !PPC_E500 2065 range 0 3 if !PPC_E500 2066 help 2067 Select the default watchdog timer period to be used by the PowerPC 2068 Book-E watchdog driver. A watchdog "event" occurs when the bit 2069 position represented by this number transitions from zero to one. 2070 2071 For Freescale Book-E processors, this is a number between 0 and 63. 2072 For other Book-E processors, this is a number between 0 and 3. 2073 2074 The value can be overridden by the wdt_period command-line parameter. 2075 2076config MEN_A21_WDT 2077 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer" 2078 select WATCHDOG_CORE 2079 depends on GPIOLIB || COMPILE_TEST 2080 help 2081 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards. 2082 2083 The driver can also be built as a module. If so, the module will be 2084 called mena21_wdt. 2085 2086 If unsure select N here. 2087 2088# PPC64 Architecture 2089 2090config PSERIES_WDT 2091 tristate "POWER Architecture Platform Watchdog Timer" 2092 depends on PPC_PSERIES 2093 select WATCHDOG_CORE 2094 help 2095 Driver for virtual watchdog timers provided by PAPR 2096 hypervisors (e.g. PowerVM, KVM). 2097 2098config WATCHDOG_RTAS 2099 tristate "RTAS watchdog" 2100 depends on PPC_RTAS 2101 help 2102 This driver adds watchdog support for the RTAS watchdog. 2103 2104 To compile this driver as a module, choose M here. The module 2105 will be called wdrtas. 2106 2107# RISC-V Architecture 2108 2109config ATCWDT200_WATCHDOG 2110 tristate "Andes ATCWDT200 Watchdog support" 2111 depends on ARCH_ANDES || COMPILE_TEST 2112 help 2113 Driver for the Andes ATCWDT200 watchdog timer. It provides access to 2114 programmable reset and interrupt counters with clock-source dependent 2115 timing. The driver automatically detects the supported IntTime bit-width 2116 and is fully integrated with the Linux Watchdog Framework. 2117 2118config STARFIVE_WATCHDOG 2119 tristate "StarFive Watchdog support" 2120 depends on ARCH_STARFIVE || COMPILE_TEST 2121 select WATCHDOG_CORE 2122 default ARCH_STARFIVE 2123 help 2124 Say Y here to support the watchdog of StarFive JH7100 and JH7110 2125 SoC. This driver can also be built as a module if choose M. 2126 2127# S390 Architecture 2128 2129config DIAG288_WATCHDOG 2130 tristate "System z diag288 Watchdog" 2131 depends on S390 2132 select WATCHDOG_CORE 2133 help 2134 IBM s/390 and zSeries machines running under z/VM 5.1 or later 2135 provide a virtual watchdog timer to their guest that cause a 2136 user define Control Program command to be executed after a 2137 timeout. 2138 LPAR provides a very similar interface. This driver handles 2139 both. 2140 2141 To compile this driver as a module, choose M here. The module 2142 will be called diag288_wdt. 2143 2144# SUPERH (sh + sh64) Architecture 2145 2146config SH_WDT 2147 tristate "SuperH Watchdog" 2148 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST) 2149 select WATCHDOG_CORE 2150 help 2151 This driver adds watchdog support for the integrated watchdog in the 2152 SuperH processors. If you have one of these processors and wish 2153 to have watchdog support enabled, say Y, otherwise say N. 2154 2155 As a side note, saying Y here will automatically boost HZ to 1000 2156 so that the timer has a chance to clear the overflow counter. On 2157 slower systems (such as the SH-2 and SH-3) this will likely yield 2158 some performance issues. As such, the WDT should be avoided here 2159 unless it is absolutely necessary. 2160 2161 To compile this driver as a module, choose M here: the 2162 module will be called shwdt. 2163 2164# SPARC Architecture 2165 2166# SPARC64 Architecture 2167 2168config WATCHDOG_CP1XXX 2169 tristate "CP1XXX Hardware Watchdog support" 2170 depends on SPARC64 && PCI 2171 help 2172 This is the driver for the hardware watchdog timers present on 2173 Sun Microsystems CompactPCI models CP1400 and CP1500. 2174 2175 To compile this driver as a module, choose M here: the 2176 module will be called cpwatchdog. 2177 2178 If you do not have a CompactPCI model CP1400 or CP1500, or 2179 another UltraSPARC-IIi-cEngine boardset with hardware watchdog, 2180 you should say N to this option. 2181 2182config WATCHDOG_RIO 2183 tristate "RIO Hardware Watchdog support" 2184 depends on SPARC64 && PCI 2185 help 2186 Say Y here to support the hardware watchdog capability on Sun RIO 2187 machines. The watchdog timeout period is normally one minute but 2188 can be changed with a boot-time parameter. 2189 2190config WATCHDOG_SUN4V 2191 tristate "Sun4v Watchdog support" 2192 select WATCHDOG_CORE 2193 depends on SPARC64 2194 help 2195 Say Y here to support the hypervisor watchdog capability embedded 2196 in the SPARC sun4v architecture. 2197 2198 To compile this driver as a module, choose M here. The module will 2199 be called sun4v_wdt. 2200 2201# XTENSA Architecture 2202 2203# Xen Architecture 2204 2205config XEN_WDT 2206 tristate "Xen Watchdog support" 2207 depends on XEN 2208 select WATCHDOG_CORE 2209 help 2210 Say Y here to support the hypervisor watchdog capability provided 2211 by Xen 4.0 and newer. The watchdog timeout period is normally one 2212 minute but can be changed with a boot-time parameter. 2213 2214config UML_WATCHDOG 2215 tristate "UML watchdog" 2216 depends on UML || COMPILE_TEST 2217 2218# 2219# ISA-based Watchdog Cards 2220# 2221 2222comment "ISA-based Watchdog Cards" 2223 depends on ISA 2224 2225config PCWATCHDOG 2226 tristate "Berkshire Products ISA-PC Watchdog" 2227 depends on ISA 2228 help 2229 This is the driver for the Berkshire Products ISA-PC Watchdog card. 2230 This card simply watches your kernel to make sure it doesn't freeze, 2231 and if it does, it reboots your computer after a certain amount of 2232 time. This driver is like the WDT501 driver but for different 2233 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. 2234 The PC watchdog cards can be ordered from <http://www.berkprod.com/>. 2235 2236 To compile this driver as a module, choose M here: the 2237 module will be called pcwd. 2238 2239 Most people will say N. 2240 2241config MIXCOMWD 2242 tristate "Mixcom Watchdog" 2243 depends on ISA 2244 help 2245 This is a driver for the Mixcom hardware watchdog cards. This 2246 watchdog simply watches your kernel to make sure it doesn't freeze, 2247 and if it does, it reboots your computer after a certain amount of 2248 time. 2249 2250 To compile this driver as a module, choose M here: the 2251 module will be called mixcomwd. 2252 2253 Most people will say N. 2254 2255config WDT 2256 tristate "ICS WDT500P/501P Watchdog timer" 2257 depends on ISA 2258 help 2259 If you have an Industrial Computer Source (ICS) WDT500P or WDT501P 2260 watchdog board, say Y here, 2261 otherwise N. It is not possible to probe for this board, which means 2262 that you have to inform the kernel about the IO port and IRQ that 2263 is needed (you can do this via the io and irq parameters) 2264 2265 To compile this driver as a module, choose M here: the 2266 module will be called wdt. 2267 2268# 2269# PCI-based Watchdog Cards 2270# 2271 2272comment "PCI-based Watchdog Cards" 2273 depends on PCI 2274 2275config PCIPCWATCHDOG 2276 tristate "Berkshire Products PCI-PC Watchdog" 2277 depends on PCI && HAS_IOPORT 2278 help 2279 This is the driver for the Berkshire Products PCI-PC Watchdog card. 2280 This card simply watches your kernel to make sure it doesn't freeze, 2281 and if it does, it reboots your computer after a certain amount of 2282 time. The card can also monitor the internal temperature of the PC. 2283 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>. 2284 2285 To compile this driver as a module, choose M here: the 2286 module will be called pcwd_pci. 2287 2288 Most people will say N. 2289 2290config WDTPCI 2291 tristate "ICS PCI-WDT500/501 Watchdog timer" 2292 depends on PCI && HAS_IOPORT 2293 help 2294 If you have an Industrial Computer Source (ICS) PCI-WDT500/501 watchdog 2295 board, say Y here, otherwise N. 2296 2297 If you have a PCI-WDT501 watchdog board then you can enable the 2298 temperature sensor by setting the type parameter to 501. 2299 2300 If you want to enable the Fan Tachometer on the PCI-WDT501, then you 2301 can do this via the tachometer parameter. Only do this if you have a 2302 fan tachometer actually set up. 2303 2304 To compile this driver as a module, choose M here: the 2305 module will be called wdt_pci. 2306 2307# 2308# USB-based Watchdog Cards 2309# 2310 2311comment "USB-based Watchdog Cards" 2312 depends on USB 2313 2314config USBPCWATCHDOG 2315 tristate "Berkshire Products USB-PC Watchdog" 2316 depends on USB 2317 help 2318 This is the driver for the Berkshire Products USB-PC Watchdog card. 2319 This card simply watches your kernel to make sure it doesn't freeze, 2320 and if it does, it reboots your computer after a certain amount of 2321 time. The card can also monitor the internal temperature of the PC. 2322 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>. 2323 2324 To compile this driver as a module, choose M here: the 2325 module will be called pcwd_usb. 2326 2327 Most people will say N. 2328 2329config KEEMBAY_WATCHDOG 2330 tristate "Intel Keem Bay SoC non-secure watchdog" 2331 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST) 2332 select WATCHDOG_CORE 2333 help 2334 This option enable support for an In-secure watchdog timer driver for 2335 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every 2336 count unit. An interrupt will be triggered, when the count crosses 2337 the threshold configured in the register. 2338 2339 To compile this driver as a module, choose M here: the 2340 module will be called keembay_wdt. 2341 2342config GUNYAH_WATCHDOG 2343 tristate "Qualcomm Gunyah Watchdog" 2344 depends on ARCH_QCOM || COMPILE_TEST 2345 depends on HAVE_ARM_SMCCC 2346 select WATCHDOG_CORE 2347 help 2348 Say Y here to include support for watchdog timer provided by the 2349 Gunyah hypervisor. The driver uses ARM SMC Calling Convention (SMCCC) 2350 to interact with Gunyah Watchdog. 2351 2352 To compile this driver as a module, choose M here: the 2353 module will be called gunyah_wdt. 2354 2355endif # WATCHDOG 2356