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 DA9052_WATCHDOG 185 tristate "Dialog DA9052 Watchdog" 186 depends on PMIC_DA9052 || COMPILE_TEST 187 select WATCHDOG_CORE 188 help 189 Support for the watchdog in the DA9052 PMIC. Watchdog trigger 190 cause system reset. 191 192 Say Y here to include support for the DA9052 watchdog. 193 Alternatively say M to compile the driver as a module, 194 which will be called da9052_wdt. 195 196config DA9055_WATCHDOG 197 tristate "Dialog Semiconductor DA9055 Watchdog" 198 depends on MFD_DA9055 || COMPILE_TEST 199 select WATCHDOG_CORE 200 help 201 If you say yes here you get support for watchdog on the Dialog 202 Semiconductor DA9055 PMIC. 203 204 This driver can also be built as a module. If so, the module 205 will be called da9055_wdt. 206 207config DA9063_WATCHDOG 208 tristate "Dialog DA9063 Watchdog" 209 depends on MFD_DA9063 || COMPILE_TEST 210 depends on I2C 211 select WATCHDOG_CORE 212 help 213 Support for the watchdog in the DA9063 PMIC. 214 215 This driver can be built as a module. The module name is da9063_wdt. 216 217config DA9062_WATCHDOG 218 tristate "Dialog DA9062/61 Watchdog" 219 depends on MFD_DA9062 || COMPILE_TEST 220 depends on I2C 221 select WATCHDOG_CORE 222 help 223 Support for the watchdog in the DA9062 and DA9061 PMICs. 224 225 This driver can be built as a module. The module name is da9062_wdt. 226 227config GPIO_WATCHDOG 228 tristate "Watchdog device controlled through GPIO-line" 229 depends on OF_GPIO 230 select WATCHDOG_CORE 231 help 232 If you say yes here you get support for watchdog device 233 controlled through GPIO-line. 234 235config GPIO_WATCHDOG_ARCH_INITCALL 236 bool "Register the watchdog as early as possible" 237 depends on GPIO_WATCHDOG=y 238 help 239 In some situations, the default initcall level (module_init) 240 in not early enough in the boot process to avoid the watchdog 241 to be triggered. 242 If you say yes here, the initcall level would be raised to 243 arch_initcall. 244 If in doubt, say N. 245 246config MENF21BMC_WATCHDOG 247 tristate "MEN 14F021P00 BMC Watchdog" 248 depends on MFD_MENF21BMC || COMPILE_TEST 249 depends on I2C 250 select WATCHDOG_CORE 251 help 252 Say Y here to include support for the MEN 14F021P00 BMC Watchdog. 253 254 This driver can also be built as a module. If so the module 255 will be called menf21bmc_wdt. 256 257config MENZ069_WATCHDOG 258 tristate "MEN 16Z069 Watchdog" 259 depends on MCB 260 select WATCHDOG_CORE 261 help 262 Say Y here to include support for the MEN 16Z069 Watchdog. 263 264 This driver can also be built as a module. If so the module 265 will be called menz069_wdt. 266 267config WDAT_WDT 268 tristate "ACPI Watchdog Action Table (WDAT)" 269 depends on ACPI 270 select WATCHDOG_CORE 271 select ACPI_WATCHDOG 272 help 273 This driver adds support for systems with ACPI Watchdog Action 274 Table (WDAT) table. Servers typically have this but it can be 275 found on some desktop machines as well. This driver will take 276 over the native iTCO watchdog driver found on many Intel CPUs. 277 278 To compile this driver as module, choose M here: the module will 279 be called wdat_wdt. 280 281config WM831X_WATCHDOG 282 tristate "WM831x watchdog" 283 depends on MFD_WM831X 284 select WATCHDOG_CORE 285 help 286 Support for the watchdog in the WM831x AudioPlus PMICs. When 287 the watchdog triggers the system will be reset. 288 289config WM8350_WATCHDOG 290 tristate "WM8350 watchdog" 291 depends on MFD_WM8350 292 select WATCHDOG_CORE 293 help 294 Support for the watchdog in the WM8350 AudioPlus PMIC. When 295 the watchdog triggers the system will be reset. 296 297config XILINX_WATCHDOG 298 tristate "Xilinx Watchdog timer" 299 depends on HAS_IOMEM 300 select WATCHDOG_CORE 301 help 302 Watchdog driver for the xps_timebase_wdt IP core. 303 304 To compile this driver as a module, choose M here: the 305 module will be called of_xilinx_wdt. 306 307config ZIIRAVE_WATCHDOG 308 tristate "Zodiac RAVE Watchdog Timer" 309 depends on I2C 310 select WATCHDOG_CORE 311 help 312 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog 313 Processor. 314 315 To compile this driver as a module, choose M here: the 316 module will be called ziirave_wdt. 317 318config RAVE_SP_WATCHDOG 319 tristate "RAVE SP Watchdog timer" 320 depends on RAVE_SP_CORE 321 depends on NVMEM || !NVMEM 322 select WATCHDOG_CORE 323 help 324 Support for the watchdog on RAVE SP device. 325 326config MLX_WDT 327 tristate "Mellanox Watchdog" 328 depends on MELLANOX_PLATFORM 329 select WATCHDOG_CORE 330 select REGMAP 331 help 332 This is the driver for the hardware watchdog on Mellanox systems. 333 If you are going to use it, say Y here, otherwise N. 334 This driver can be used together with the watchdog daemon. 335 It can also watch your kernel to make sure it doesn't freeze, 336 and if it does, it reboots your system after a certain amount of 337 time. 338 339 To compile this driver as a module, choose M here: the 340 module will be called mlx-wdt. 341 342config SL28CPLD_WATCHDOG 343 tristate "Kontron sl28cpld Watchdog" 344 depends on MFD_SL28CPLD || COMPILE_TEST 345 select WATCHDOG_CORE 346 help 347 Say Y here to include support for the watchdog timer 348 on the Kontron sl28 CPLD. 349 350 To compile this driver as a module, choose M here: the 351 module will be called sl28cpld_wdt. 352 353# ALPHA Architecture 354 355# ARM Architecture 356 357config ARM_SP805_WATCHDOG 358 tristate "ARM SP805 Watchdog" 359 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA 360 select WATCHDOG_CORE 361 help 362 ARM Primecell SP805 Watchdog timer. This will reboot your system when 363 the timeout is reached. 364 365config ARM_SBSA_WATCHDOG 366 tristate "ARM SBSA Generic Watchdog" 367 depends on ARM64 368 depends on ARM_ARCH_TIMER 369 select WATCHDOG_CORE 370 help 371 ARM SBSA Generic Watchdog has two stage timeouts: 372 the first signal (WS0) is for alerting the system by interrupt, 373 the second one (WS1) is a real hardware reset. 374 More details: ARM DEN0029B - Server Base System Architecture (SBSA) 375 376 This driver can operate ARM SBSA Generic Watchdog as a single stage 377 or a two stages watchdog, it depends on the module parameter "action". 378 379 Note: the maximum timeout in the two stages mode is half of that in 380 the single stage mode. 381 382 To compile this driver as module, choose M here: The module 383 will be called sbsa_gwdt. 384 385config ARMADA_37XX_WATCHDOG 386 tristate "Armada 37xx watchdog" 387 depends on ARCH_MVEBU || COMPILE_TEST 388 depends on HAS_IOMEM 389 select MFD_SYSCON 390 select WATCHDOG_CORE 391 help 392 Say Y here to include support for the watchdog timer found on 393 Marvell Armada 37xx SoCs. 394 To compile this driver as a module, choose M here: the 395 module will be called armada_37xx_wdt. 396 397config ASM9260_WATCHDOG 398 tristate "Alphascale ASM9260 watchdog" 399 depends on MACH_ASM9260 || COMPILE_TEST 400 depends on OF 401 select WATCHDOG_CORE 402 select RESET_CONTROLLER 403 help 404 Watchdog timer embedded into Alphascale asm9260 chips. This will 405 reboot your system when the timeout is reached. 406 407config AT91RM9200_WATCHDOG 408 tristate "AT91RM9200 watchdog" 409 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST 410 help 411 Watchdog timer embedded into AT91RM9200 chips. This will reboot your 412 system when the timeout is reached. 413 414config AT91SAM9X_WATCHDOG 415 tristate "AT91SAM9X / AT91CAP9 watchdog" 416 depends on ARCH_AT91 || COMPILE_TEST 417 select WATCHDOG_CORE 418 help 419 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will 420 reboot your system when the timeout is reached. 421 422config SAMA5D4_WATCHDOG 423 tristate "Atmel SAMA5D4 Watchdog Timer" 424 depends on ARCH_AT91 || COMPILE_TEST 425 select WATCHDOG_CORE 426 help 427 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips. 428 Its Watchdog Timer Mode Register can be written more than once. 429 This will reboot your system when the timeout is reached. 430 431config CADENCE_WATCHDOG 432 tristate "Cadence Watchdog Timer" 433 depends on HAS_IOMEM 434 select WATCHDOG_CORE 435 help 436 Say Y here if you want to include support for the watchdog 437 timer in the Xilinx Zynq. 438 439config 21285_WATCHDOG 440 tristate "DC21285 watchdog" 441 depends on FOOTBRIDGE 442 help 443 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y 444 here if you wish to use this. Alternatively say M to compile the 445 driver as a module, which will be called wdt285. 446 447 This driver does not work on all machines. In particular, early CATS 448 boards have hardware problems that will cause the machine to simply 449 lock up if the watchdog fires. 450 451 "If in doubt, leave it out" - say N. 452 453config 977_WATCHDOG 454 tristate "NetWinder WB83C977 watchdog" 455 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST) 456 help 457 Say Y here to include support for the WB977 watchdog included in 458 NetWinder machines. Alternatively say M to compile the driver as 459 a module, which will be called wdt977. 460 461 Not sure? It's safe to say N. 462 463config FTWDT010_WATCHDOG 464 tristate "Faraday Technology FTWDT010 watchdog" 465 depends on ARM || COMPILE_TEST 466 select WATCHDOG_CORE 467 default ARCH_GEMINI 468 help 469 Say Y here if to include support for the Faraday Technology 470 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini 471 family of devices. 472 473 To compile this driver as a module, choose M here: the 474 module will be called ftwdt010_wdt. 475 476config IXP4XX_WATCHDOG 477 tristate "IXP4xx Watchdog" 478 depends on ARCH_IXP4XX 479 select WATCHDOG_CORE 480 help 481 Say Y here if to include support for the watchdog timer 482 in the Intel IXP4xx network processors. This driver can 483 be built as a module by choosing M. The module will 484 be called ixp4xx_wdt. 485 486 Note: The internal IXP4xx watchdog does a soft CPU reset 487 which doesn't reset any peripherals. There are circumstances 488 where the watchdog will fail to reset the board correctly 489 (e.g., if the boot ROM is in an unreadable state). 490 491 Say N if you are unsure. 492 493config S3C2410_WATCHDOG 494 tristate "S3C2410 Watchdog" 495 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \ 496 COMPILE_TEST 497 select WATCHDOG_CORE 498 select MFD_SYSCON if ARCH_EXYNOS 499 help 500 Watchdog timer block in the Samsung S3C24xx, S3C64xx, S5Pv210 and 501 Exynos SoCs. This will reboot the system when the timer expires with 502 the watchdog enabled. 503 504 The driver is limited by the speed of the system's PCLK 505 signal, so with reasonably fast systems (PCLK around 50-66MHz) 506 then watchdog intervals of over approximately 20seconds are 507 unavailable. 508 509 Choose Y/M here only if you build for such Samsung SoC. 510 The driver can be built as a module by choosing M, and will 511 be called s3c2410_wdt. 512 513config SA1100_WATCHDOG 514 tristate "SA1100/PXA2xx watchdog" 515 depends on ARCH_SA1100 || ARCH_PXA 516 help 517 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will 518 reboot your system when timeout is reached. 519 520 NOTE: once enabled, this timer cannot be disabled. 521 522 To compile this driver as a module, choose M here: the 523 module will be called sa1100_wdt. 524 525config DW_WATCHDOG 526 tristate "Synopsys DesignWare watchdog" 527 depends on HAS_IOMEM 528 select WATCHDOG_CORE 529 help 530 Say Y here if to include support for the Synopsys DesignWare 531 watchdog timer found in many chips. 532 To compile this driver as a module, choose M here: the 533 module will be called dw_wdt. 534 535config EP93XX_WATCHDOG 536 tristate "EP93xx Watchdog" 537 depends on ARCH_EP93XX || COMPILE_TEST 538 select WATCHDOG_CORE 539 help 540 Say Y here if to include support for the watchdog timer 541 embedded in the Cirrus Logic EP93xx family of devices. 542 543 To compile this driver as a module, choose M here: the 544 module will be called ep93xx_wdt. 545 546config OMAP_WATCHDOG 547 tristate "OMAP Watchdog" 548 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST 549 select WATCHDOG_CORE 550 help 551 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. 552 Say 'Y' here to enable the 553 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer. 554 555config PNX4008_WATCHDOG 556 tristate "LPC32XX Watchdog" 557 depends on ARCH_LPC32XX || COMPILE_TEST 558 select WATCHDOG_CORE 559 help 560 Say Y here if to include support for the watchdog timer 561 in the LPC32XX processor. 562 This driver can be built as a module by choosing M. The module 563 will be called pnx4008_wdt. 564 565 Say N if you are unsure. 566 567config DAVINCI_WATCHDOG 568 tristate "DaVinci watchdog" 569 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST 570 select WATCHDOG_CORE 571 help 572 Say Y here if to include support for the watchdog timer 573 in the DaVinci DM644x/DM646x or Keystone processors. 574 To compile this driver as a module, choose M here: the 575 module will be called davinci_wdt. 576 577 NOTE: once enabled, this timer cannot be disabled. 578 Say N if you are unsure. 579 580config K3_RTI_WATCHDOG 581 tristate "Texas Instruments K3 RTI watchdog" 582 depends on ARCH_K3 || COMPILE_TEST 583 select WATCHDOG_CORE 584 help 585 Say Y here if you want to include support for the K3 watchdog 586 timer (RTI module) available in the K3 generation of processors. 587 588config ORION_WATCHDOG 589 tristate "Orion watchdog" 590 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST 591 depends on ARM 592 select WATCHDOG_CORE 593 help 594 Say Y here if to include support for the watchdog timer 595 in the Marvell Orion5x and Kirkwood ARM SoCs. 596 To compile this driver as a module, choose M here: the 597 module will be called orion_wdt. 598 599config RN5T618_WATCHDOG 600 tristate "Ricoh RN5T618 watchdog" 601 depends on MFD_RN5T618 || COMPILE_TEST 602 select WATCHDOG_CORE 603 help 604 If you say yes here you get support for watchdog on the Ricoh 605 RN5T618 PMIC. 606 607 This driver can also be built as a module. If so, the module 608 will be called rn5t618_wdt. 609 610config SUNXI_WATCHDOG 611 tristate "Allwinner SoCs watchdog support" 612 depends on ARCH_SUNXI || COMPILE_TEST 613 select WATCHDOG_CORE 614 help 615 Say Y here to include support for the watchdog timer 616 in Allwinner SoCs. 617 To compile this driver as a module, choose M here: the 618 module will be called sunxi_wdt. 619 620config NPCM7XX_WATCHDOG 621 tristate "Nuvoton NPCM750 watchdog" 622 depends on ARCH_NPCM || COMPILE_TEST 623 default y if ARCH_NPCM7XX 624 select WATCHDOG_CORE 625 help 626 Say Y here to include Watchdog timer support for the 627 watchdog embedded into the NPCM7xx. 628 This watchdog is used to reset the system and thus cannot be 629 compiled as a module. 630 631config TWL4030_WATCHDOG 632 tristate "TWL4030 Watchdog" 633 depends on TWL4030_CORE 634 select WATCHDOG_CORE 635 help 636 Support for TI TWL4030 watchdog. Say 'Y' here to enable the 637 watchdog timer support for TWL4030 chips. 638 639config STMP3XXX_RTC_WATCHDOG 640 tristate "Freescale STMP3XXX & i.MX23/28 watchdog" 641 depends on RTC_DRV_STMP || COMPILE_TEST 642 select WATCHDOG_CORE 643 help 644 Say Y here to include support for the watchdog timer inside 645 the RTC for the STMP37XX/378X or i.MX23/28 SoC. 646 To compile this driver as a module, choose M here: the 647 module will be called stmp3xxx_rtc_wdt. 648 649config TS4800_WATCHDOG 650 tristate "TS-4800 Watchdog" 651 depends on HAS_IOMEM && OF 652 depends on SOC_IMX51 || COMPILE_TEST 653 select WATCHDOG_CORE 654 select MFD_SYSCON 655 help 656 Technologic Systems TS-4800 has watchdog timer implemented in 657 an external FPGA. Say Y here if you want to support for the 658 watchdog timer on TS-4800 board. 659 660config TS72XX_WATCHDOG 661 tristate "TS-72XX SBC Watchdog" 662 depends on MACH_TS72XX || COMPILE_TEST 663 select WATCHDOG_CORE 664 help 665 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have 666 watchdog timer implemented in a external CPLD chip. Say Y here 667 if you want to support for the watchdog timer on TS-72XX boards. 668 669 To compile this driver as a module, choose M here: the 670 module will be called ts72xx_wdt. 671 672config MAX63XX_WATCHDOG 673 tristate "Max63xx watchdog" 674 depends on HAS_IOMEM 675 select WATCHDOG_CORE 676 help 677 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer. 678 679config MAX77620_WATCHDOG 680 tristate "Maxim Max77620 Watchdog Timer" 681 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST 682 select WATCHDOG_CORE 683 help 684 This is the driver for the Max77620 watchdog timer. 685 Say 'Y' here to enable the watchdog timer support for 686 MAX77620 chips. To compile this driver as a module, 687 choose M here: the module will be called max77620_wdt. 688 689config IMX2_WDT 690 tristate "IMX2+ Watchdog" 691 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST 692 select REGMAP_MMIO 693 select WATCHDOG_CORE 694 help 695 This is the driver for the hardware watchdog 696 on the Freescale IMX2 and later processors. 697 If you have one of these processors and wish to have 698 watchdog support enabled, say Y, otherwise say N. 699 700 To compile this driver as a module, choose M here: the 701 module will be called imx2_wdt. 702 703config IMX_SC_WDT 704 tristate "IMX SC Watchdog" 705 depends on HAVE_ARM_SMCCC 706 depends on IMX_SCU 707 select WATCHDOG_CORE 708 help 709 This is the driver for the system controller watchdog 710 on the NXP i.MX SoCs with system controller inside, the 711 watchdog driver will call ARM SMC API and trap into 712 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware 713 will request system controller to execute the operations. 714 If you have one of these processors and wish to have 715 watchdog support enabled, say Y, otherwise say N. 716 717 To compile this driver as a module, choose M here: the 718 module will be called imx_sc_wdt. 719 720config IMX7ULP_WDT 721 tristate "IMX7ULP Watchdog" 722 depends on ARCH_MXC || COMPILE_TEST 723 select WATCHDOG_CORE 724 help 725 This is the driver for the hardware watchdog on the Freescale 726 IMX7ULP and later processors. If you have one of these 727 processors and wish to have watchdog support enabled, 728 say Y, otherwise say N. 729 730 To compile this driver as a module, choose M here: the 731 module will be called imx7ulp_wdt. 732 733config DB500_WATCHDOG 734 tristate "ST-Ericsson DB800 watchdog" 735 depends on MFD_DB8500_PRCMU 736 select WATCHDOG_CORE 737 default y 738 help 739 Say Y here to include Watchdog timer support for the watchdog 740 existing in the prcmu of ST-Ericsson DB8500 platform. 741 742 To compile this driver as a module, choose M here: the 743 module will be called db500_wdt. 744 745config RETU_WATCHDOG 746 tristate "Retu watchdog" 747 depends on MFD_RETU 748 select WATCHDOG_CORE 749 help 750 Retu watchdog driver for Nokia Internet Tablets (770, N800, 751 N810). At least on N800 the watchdog cannot be disabled, so 752 this driver is essential and you should enable it. 753 754 To compile this driver as a module, choose M here: the 755 module will be called retu_wdt. 756 757config MOXART_WDT 758 tristate "MOXART watchdog" 759 depends on ARCH_MOXART || COMPILE_TEST 760 help 761 Say Y here to include Watchdog timer support for the watchdog 762 existing on the MOXA ART SoC series platforms. 763 764 To compile this driver as a module, choose M here: the 765 module will be called moxart_wdt. 766 767config ST_LPC_WATCHDOG 768 tristate "STMicroelectronics LPC Watchdog" 769 depends on ARCH_STI || COMPILE_TEST 770 depends on OF 771 select WATCHDOG_CORE 772 help 773 Say Y here to include STMicroelectronics Low Power Controller 774 (LPC) based Watchdog timer support. 775 776 To compile this driver as a module, choose M here: the 777 module will be called st_lpc_wdt. 778 779config TEGRA_WATCHDOG 780 tristate "Tegra watchdog" 781 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM 782 select WATCHDOG_CORE 783 help 784 Say Y here to include support for the watchdog timer 785 embedded in NVIDIA Tegra SoCs. 786 787 To compile this driver as a module, choose M here: the 788 module will be called tegra_wdt. 789 790config QCOM_WDT 791 tristate "QCOM watchdog" 792 depends on HAS_IOMEM 793 depends on ARCH_QCOM || COMPILE_TEST 794 select WATCHDOG_CORE 795 help 796 Say Y here to include Watchdog timer support for the watchdog found 797 on QCOM chipsets. Currently supported targets are the MSM8960, 798 APQ8064, and IPQ8064. 799 800 To compile this driver as a module, choose M here: the 801 module will be called qcom_wdt. 802 803config MESON_GXBB_WATCHDOG 804 tristate "Amlogic Meson GXBB SoCs watchdog support" 805 depends on ARCH_MESON || COMPILE_TEST 806 select WATCHDOG_CORE 807 help 808 Say Y here to include support for the watchdog timer 809 in Amlogic Meson GXBB SoCs. 810 To compile this driver as a module, choose M here: the 811 module will be called meson_gxbb_wdt. 812 813config MESON_WATCHDOG 814 tristate "Amlogic Meson SoCs watchdog support" 815 depends on ARCH_MESON || COMPILE_TEST 816 select WATCHDOG_CORE 817 help 818 Say Y here to include support for the watchdog timer 819 in Amlogic Meson SoCs. 820 To compile this driver as a module, choose M here: the 821 module will be called meson_wdt. 822 823config MEDIATEK_WATCHDOG 824 tristate "Mediatek SoCs watchdog support" 825 depends on ARCH_MEDIATEK || COMPILE_TEST 826 default ARCH_MEDIATEK 827 select WATCHDOG_CORE 828 select RESET_CONTROLLER 829 help 830 Say Y here to include support for the watchdog timer 831 in Mediatek SoCs. 832 To compile this driver as a module, choose M here: the 833 module will be called mtk_wdt. 834 835config DIGICOLOR_WATCHDOG 836 tristate "Conexant Digicolor SoCs watchdog support" 837 depends on ARCH_DIGICOLOR || COMPILE_TEST 838 select WATCHDOG_CORE 839 help 840 Say Y here to include support for the watchdog timer 841 in Conexant Digicolor SoCs. 842 To compile this driver as a module, choose M here: the 843 module will be called digicolor_wdt. 844 845config ARM_SMC_WATCHDOG 846 tristate "ARM Secure Monitor Call based watchdog support" 847 depends on ARM || ARM64 848 depends on OF 849 depends on HAVE_ARM_SMCCC 850 select WATCHDOG_CORE 851 help 852 Say Y here to include support for a watchdog timer 853 implemented by the EL3 Secure Monitor on ARM platforms. 854 Requires firmware support. 855 To compile this driver as a module, choose M here: the 856 module will be called arm_smc_wdt. 857 858config LPC18XX_WATCHDOG 859 tristate "LPC18xx/43xx Watchdog" 860 depends on ARCH_LPC18XX || COMPILE_TEST 861 depends on HAS_IOMEM 862 select WATCHDOG_CORE 863 help 864 Say Y here if to include support for the watchdog timer 865 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx 866 processors. 867 To compile this driver as a module, choose M here: the 868 module will be called lpc18xx_wdt. 869 870config RENESAS_WDT 871 tristate "Renesas WDT Watchdog" 872 depends on ARCH_RENESAS || COMPILE_TEST 873 select WATCHDOG_CORE 874 help 875 This driver adds watchdog support for the integrated watchdogs in the 876 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT). 877 878config RENESAS_RZAWDT 879 tristate "Renesas RZ/A WDT Watchdog" 880 depends on ARCH_RENESAS || COMPILE_TEST 881 select WATCHDOG_CORE 882 help 883 This driver adds watchdog support for the integrated watchdogs in the 884 Renesas RZ/A SoCs. These watchdogs can be used to reset a system. 885 886config RENESAS_RZN1WDT 887 tristate "Renesas RZ/N1 watchdog" 888 depends on ARCH_RENESAS || COMPILE_TEST 889 select WATCHDOG_CORE 890 help 891 This driver adds watchdog support for the integrated watchdogs in the 892 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system. 893 894config RENESAS_RZG2LWDT 895 tristate "Renesas RZ/G2L WDT Watchdog" 896 depends on ARCH_RENESAS || COMPILE_TEST 897 select WATCHDOG_CORE 898 help 899 This driver adds watchdog support for the integrated watchdogs in the 900 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system. 901 902config ASPEED_WATCHDOG 903 tristate "Aspeed BMC watchdog support" 904 depends on ARCH_ASPEED || COMPILE_TEST 905 select WATCHDOG_CORE 906 help 907 Say Y here to include support for the watchdog timer 908 in Aspeed BMC SoCs. 909 910 This driver is required to reboot the SoC. 911 912 To compile this driver as a module, choose M here: the 913 module will be called aspeed_wdt. 914 915config STM32_WATCHDOG 916 tristate "STM32 Independent WatchDoG (IWDG) support" 917 depends on ARCH_STM32 918 select WATCHDOG_CORE 919 default y 920 help 921 Say Y here to include support for the watchdog timer 922 in stm32 SoCs. 923 924 To compile this driver as a module, choose M here: the 925 module will be called stm32_iwdg. 926 927config STPMIC1_WATCHDOG 928 tristate "STPMIC1 PMIC watchdog support" 929 depends on MFD_STPMIC1 930 select WATCHDOG_CORE 931 help 932 Say Y here to include watchdog support embedded into STPMIC1 PMIC. 933 If the watchdog timer expires, stpmic1 will shut down all its power 934 supplies. 935 936 To compile this driver as a module, choose M here: the 937 module will be called spmic1_wdt. 938 939config UNIPHIER_WATCHDOG 940 tristate "UniPhier watchdog support" 941 depends on ARCH_UNIPHIER || COMPILE_TEST 942 depends on OF && MFD_SYSCON 943 select WATCHDOG_CORE 944 help 945 Say Y here to include support watchdog timer embedded 946 into the UniPhier system. 947 948 To compile this driver as a module, choose M here: the 949 module will be called uniphier_wdt. 950 951config RTD119X_WATCHDOG 952 bool "Realtek RTD119x/RTD129x watchdog support" 953 depends on ARCH_REALTEK || COMPILE_TEST 954 depends on OF 955 select WATCHDOG_CORE 956 default ARCH_REALTEK 957 help 958 Say Y here to include support for the watchdog timer in 959 Realtek RTD1295 SoCs. 960 961config REALTEK_OTTO_WDT 962 tristate "Realtek Otto MIPS watchdog support" 963 depends on MACH_REALTEK_RTL || COMPILE_TEST 964 depends on COMMON_CLK 965 select WATCHDOG_CORE 966 default MACH_REALTEK_RTL 967 help 968 Say Y here to include support for the watchdog timer on Realtek 969 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout 970 notifications and system reset on timeout. 971 972 When built as a module this will be called realtek_otto_wdt. 973 974config SPRD_WATCHDOG 975 tristate "Spreadtrum watchdog support" 976 depends on ARCH_SPRD || COMPILE_TEST 977 select WATCHDOG_CORE 978 help 979 Say Y here to include watchdog timer supported 980 by Spreadtrum system. 981 982config PM8916_WATCHDOG 983 tristate "QCOM PM8916 pmic watchdog" 984 depends on OF && MFD_SPMI_PMIC 985 select WATCHDOG_CORE 986 help 987 Say Y here to include support watchdog timer embedded into the 988 pm8916 module. 989 990config VISCONTI_WATCHDOG 991 tristate "Toshiba Visconti series watchdog support" 992 depends on ARCH_VISCONTI || COMPILE_TEST 993 select WATCHDOG_CORE 994 help 995 Say Y here to include support for the watchdog timer in Toshiba 996 Visconti SoCs. 997 998config MSC313E_WATCHDOG 999 tristate "MStar MSC313e watchdog" 1000 depends on ARCH_MSTARV7 || COMPILE_TEST 1001 select WATCHDOG_CORE 1002 help 1003 Say Y here to include support for the Watchdog timer embedded 1004 into MStar MSC313e chips. This will reboot your system when the 1005 timeout is reached. 1006 1007 To compile this driver as a module, choose M here: the 1008 module will be called msc313e_wdt. 1009 1010config APPLE_WATCHDOG 1011 tristate "Apple SoC watchdog" 1012 depends on ARCH_APPLE || COMPILE_TEST 1013 select WATCHDOG_CORE 1014 help 1015 Say Y here to include support for the Watchdog found in Apple 1016 SoCs such as the M1. Next to the common watchdog features this 1017 driver is also required in order to reboot these SoCs. 1018 1019 To compile this driver as a module, choose M here: the 1020 module will be called apple_wdt. 1021 1022config SUNPLUS_WATCHDOG 1023 tristate "Sunplus watchdog support" 1024 depends on ARCH_SUNPLUS || COMPILE_TEST 1025 select WATCHDOG_CORE 1026 help 1027 Say Y here to include support for the watchdog timer 1028 in Sunplus SoCs. 1029 1030 To compile this driver as a module, choose M here: the 1031 module will be called sunplus_wdt. 1032 1033# X86 (i386 + ia64 + x86_64) Architecture 1034 1035config ACQUIRE_WDT 1036 tristate "Acquire SBC Watchdog Timer" 1037 depends on X86 1038 help 1039 This is the driver for the hardware watchdog on Single Board 1040 Computers produced by Acquire Inc (and others). This watchdog 1041 simply watches your kernel to make sure it doesn't freeze, and if 1042 it does, it reboots your computer after a certain amount of time. 1043 1044 To compile this driver as a module, choose M here: the 1045 module will be called acquirewdt. 1046 1047 Most people will say N. 1048 1049config ADVANTECH_WDT 1050 tristate "Advantech SBC Watchdog Timer" 1051 depends on X86 1052 help 1053 If you are configuring a Linux kernel for the Advantech single-board 1054 computer, say `Y' here to support its built-in watchdog timer 1055 feature. More information can be found at 1056 <https://www.advantech.com.tw/products/> 1057 1058config ALIM1535_WDT 1059 tristate "ALi M1535 PMU Watchdog Timer" 1060 depends on X86 && PCI 1061 help 1062 This is the driver for the hardware watchdog on the ALi M1535 PMU. 1063 1064 To compile this driver as a module, choose M here: the 1065 module will be called alim1535_wdt. 1066 1067 Most people will say N. 1068 1069config ALIM7101_WDT 1070 tristate "ALi M7101 PMU Computer Watchdog" 1071 depends on PCI 1072 help 1073 This is the driver for the hardware watchdog on the ALi M7101 PMU 1074 as used in the x86 Cobalt servers and also found in some 1075 SPARC Netra servers too. 1076 1077 To compile this driver as a module, choose M here: the 1078 module will be called alim7101_wdt. 1079 1080 Most people will say N. 1081 1082config EBC_C384_WDT 1083 tristate "WinSystems EBC-C384 Watchdog Timer" 1084 depends on X86 1085 select ISA_BUS_API 1086 select WATCHDOG_CORE 1087 help 1088 Enables watchdog timer support for the watchdog timer on the 1089 WinSystems EBC-C384 motherboard. The timeout may be configured via 1090 the timeout module parameter. 1091 1092config F71808E_WDT 1093 tristate "Fintek F718xx, F818xx Super I/O Watchdog" 1094 depends on X86 1095 select WATCHDOG_CORE 1096 help 1097 This is the driver for the hardware watchdog on the Fintek F71808E, 1098 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and 1099 F81866 Super I/O controllers. 1100 1101 You can compile this driver directly into the kernel, or use 1102 it as a module. The module will be called f71808e_wdt. 1103 1104config SP5100_TCO 1105 tristate "AMD/ATI SP5100 TCO Timer/Watchdog" 1106 depends on X86 && PCI 1107 select WATCHDOG_CORE 1108 help 1109 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO 1110 (Total Cost of Ownership) timer is a watchdog timer that will reboot 1111 the machine after its expiration. The expiration time can be 1112 configured with the "heartbeat" parameter. 1113 1114 To compile this driver as a module, choose M here: the 1115 module will be called sp5100_tco. 1116 1117config GEODE_WDT 1118 tristate "AMD Geode CS5535/CS5536 Watchdog" 1119 depends on CS5535_MFGPT 1120 help 1121 This driver enables a watchdog capability built into the 1122 CS5535/CS5536 companion chips for the AMD Geode GX and LX 1123 processors. This watchdog watches your kernel to make sure 1124 it doesn't freeze, and if it does, it reboots your computer after 1125 a certain amount of time. 1126 1127 You can compile this driver directly into the kernel, or use 1128 it as a module. The module will be called geodewdt. 1129 1130config SC520_WDT 1131 tristate "AMD Elan SC520 processor Watchdog" 1132 depends on MELAN || COMPILE_TEST 1133 help 1134 This is the driver for the hardware watchdog built in to the 1135 AMD "Elan" SC520 microcomputer commonly used in embedded systems. 1136 This watchdog simply watches your kernel to make sure it doesn't 1137 freeze, and if it does, it reboots your computer after a certain 1138 amount of time. 1139 1140 You can compile this driver directly into the kernel, or use 1141 it as a module. The module will be called sc520_wdt. 1142 1143config SBC_FITPC2_WATCHDOG 1144 tristate "Compulab SBC-FITPC2 watchdog" 1145 depends on X86 1146 help 1147 This is the driver for the built-in watchdog timer on the fit-PC2, 1148 fit-PC2i, CM-iAM single-board computers made by Compulab. 1149 1150 It's possible to enable the watchdog timer either from BIOS (F2) or 1151 from booted Linux. 1152 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds 1153 operational range. 1154 1155 Entering BIOS setup temporarily disables watchdog operation regardless 1156 of current state, so system will not be restarted while user is in 1157 BIOS setup. 1158 1159 Once the watchdog is enabled the system will be restarted every 1160 "Watchdog Timer Value" period, so to prevent it user can restart or 1161 disable the watchdog. 1162 1163 To compile this driver as a module, choose M here: the 1164 module will be called sbc_fitpc2_wdt. 1165 1166 Most people will say N. 1167 1168config EUROTECH_WDT 1169 tristate "Eurotech CPU-1220/1410 Watchdog Timer" 1170 depends on X86 1171 help 1172 Enable support for the watchdog timer on the Eurotech CPU-1220 and 1173 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product 1174 information are at <http://www.eurotech.it/>. 1175 1176config IB700_WDT 1177 tristate "IB700 SBC Watchdog Timer" 1178 depends on X86 1179 help 1180 This is the driver for the hardware watchdog on the IB700 Single 1181 Board Computer produced by TMC Technology (www.tmc-uk.com). This 1182 watchdog simply watches your kernel to make sure it doesn't freeze, 1183 and if it does, it reboots your computer after a certain amount of time. 1184 1185 This driver is like the WDT501 driver but for slightly different 1186 hardware. 1187 1188 To compile this driver as a module, choose M here: the 1189 module will be called ib700wdt. 1190 1191 Most people will say N. 1192 1193config IBMASR 1194 tristate "IBM Automatic Server Restart" 1195 depends on X86 1196 help 1197 This is the driver for the IBM Automatic Server Restart watchdog 1198 timer built-in into some eServer xSeries machines. 1199 1200 To compile this driver as a module, choose M here: the 1201 module will be called ibmasr. 1202 1203config WAFER_WDT 1204 tristate "ICP Single Board Computer Watchdog Timer" 1205 depends on X86 1206 help 1207 This is a driver for the hardware watchdog on the ICP Single 1208 Board Computer. This driver is working on (at least) the following 1209 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782. 1210 1211 To compile this driver as a module, choose M here: the 1212 module will be called wafer5823wdt. 1213 1214config I6300ESB_WDT 1215 tristate "Intel 6300ESB Timer/Watchdog" 1216 depends on PCI 1217 select WATCHDOG_CORE 1218 help 1219 Hardware driver for the watchdog timer built into the Intel 1220 6300ESB controller hub. 1221 1222 To compile this driver as a module, choose M here: the 1223 module will be called i6300esb. 1224 1225config IE6XX_WDT 1226 tristate "Intel Atom E6xx Watchdog" 1227 depends on X86 && PCI 1228 select WATCHDOG_CORE 1229 select MFD_CORE 1230 select LPC_SCH 1231 help 1232 Hardware driver for the watchdog timer built into the Intel 1233 Atom E6XX (TunnelCreek) processor. 1234 1235 To compile this driver as a module, choose M here: the 1236 module will be called ie6xx_wdt. 1237 1238config INTEL_MID_WATCHDOG 1239 tristate "Intel MID Watchdog Timer" 1240 depends on X86_INTEL_MID 1241 select WATCHDOG_CORE 1242 help 1243 Watchdog timer driver built into the Intel SCU for Intel MID 1244 Platforms. 1245 1246 This driver currently supports only the watchdog evolution 1247 implementation in SCU, available for Merrifield generation. 1248 1249 To compile this driver as a module, choose M here. 1250 1251config ITCO_WDT 1252 tristate "Intel TCO Timer/Watchdog" 1253 depends on (X86 || IA64) && PCI 1254 select WATCHDOG_CORE 1255 depends on I2C || I2C=n 1256 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT 1257 select LPC_ICH if !EXPERT 1258 select I2C_I801 if !EXPERT && I2C 1259 help 1260 Hardware driver for the intel TCO timer based watchdog devices. 1261 These drivers are included in the Intel 82801 I/O Controller 1262 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB 1263 controller hub. 1264 1265 The TCO (Total Cost of Ownership) timer is a watchdog timer 1266 that will reboot the machine after its second expiration. The 1267 expiration time can be configured with the "heartbeat" parameter. 1268 1269 On some motherboards the driver may fail to reset the chipset's 1270 NO_REBOOT flag which prevents the watchdog from rebooting the 1271 machine. If this is the case you will get a kernel message like 1272 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1273 1274 To compile this driver as a module, choose M here: the 1275 module will be called iTCO_wdt. 1276 1277config ITCO_VENDOR_SUPPORT 1278 bool "Intel TCO Timer/Watchdog Specific Vendor Support" 1279 depends on ITCO_WDT 1280 help 1281 Add vendor specific support to the intel TCO timer based watchdog 1282 devices. At this moment we only have additional support for some 1283 SuperMicro Inc. motherboards. 1284 1285config IT8712F_WDT 1286 tristate "IT8712F (Smart Guardian) Watchdog Timer" 1287 depends on X86 1288 help 1289 This is the driver for the built-in watchdog timer on the IT8712F 1290 Super I/0 chipset used on many motherboards. 1291 1292 If the driver does not work, then make sure that the game port in 1293 the BIOS is enabled. 1294 1295 To compile this driver as a module, choose M here: the 1296 module will be called it8712f_wdt. 1297 1298config IT87_WDT 1299 tristate "IT87 Watchdog Timer" 1300 depends on X86 1301 select WATCHDOG_CORE 1302 help 1303 This is the driver for the hardware watchdog on the ITE IT8607, 1304 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702, 1305 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and 1306 IT8783 Super I/O chips. 1307 1308 This watchdog simply watches your kernel to make sure it doesn't 1309 freeze, and if it does, it reboots your computer after a certain 1310 amount of time. 1311 1312 To compile this driver as a module, choose M here: the module will 1313 be called it87_wdt. 1314 1315config HP_WATCHDOG 1316 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer" 1317 select WATCHDOG_CORE 1318 depends on X86 && PCI 1319 help 1320 A software monitoring watchdog and NMI handling driver. This driver 1321 will detect lockups and provide a stack trace. This is a driver that 1322 will only load on an HP ProLiant system with a minimum of iLO2 support. 1323 To compile this driver as a module, choose M here: the module will be 1324 called hpwdt. 1325 1326config HPWDT_NMI_DECODING 1327 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer" 1328 depends on HP_WATCHDOG 1329 default y 1330 help 1331 Enables the NMI handler for the watchdog pretimeout NMI and the iLO 1332 "Generate NMI to System" virtual button. When an NMI is claimed 1333 by the driver, panic is called. 1334 1335config KEMPLD_WDT 1336 tristate "Kontron COM Watchdog Timer" 1337 depends on MFD_KEMPLD 1338 select WATCHDOG_CORE 1339 help 1340 Support for the PLD watchdog on some Kontron ETX and COMexpress 1341 (ETXexpress) modules 1342 1343 This driver can also be built as a module. If so, the module will be 1344 called kempld_wdt. 1345 1346config SC1200_WDT 1347 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" 1348 depends on X86 1349 help 1350 This is a driver for National Semiconductor PC87307/PC97307 hardware 1351 watchdog cards as found on the SC1200. This watchdog is mainly used 1352 for power management purposes and can be used to power down the device 1353 during inactivity periods (includes interrupt activity monitoring). 1354 1355 To compile this driver as a module, choose M here: the 1356 module will be called sc1200wdt. 1357 1358 Most people will say N. 1359 1360config SCx200_WDT 1361 tristate "National Semiconductor SCx200 Watchdog" 1362 depends on SCx200 && PCI 1363 help 1364 Enable the built-in watchdog timer support on the National 1365 Semiconductor SCx200 processors. 1366 1367 If compiled as a module, it will be called scx200_wdt. 1368 1369config PC87413_WDT 1370 tristate "NS PC87413 watchdog" 1371 depends on X86 1372 help 1373 This is the driver for the hardware watchdog on the PC87413 chipset 1374 This watchdog simply watches your kernel to make sure it doesn't 1375 freeze, and if it does, it reboots your computer after a certain 1376 amount of time. 1377 1378 To compile this driver as a module, choose M here: the 1379 module will be called pc87413_wdt. 1380 1381 Most people will say N. 1382 1383config NV_TCO 1384 tristate "nVidia TCO Timer/Watchdog" 1385 depends on X86 && PCI 1386 help 1387 Hardware driver for the TCO timer built into the nVidia Hub family 1388 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a 1389 watchdog timer that will reboot the machine after its second 1390 expiration. The expiration time can be configured with the 1391 "heartbeat" parameter. 1392 1393 On some motherboards the driver may fail to reset the chipset's 1394 NO_REBOOT flag which prevents the watchdog from rebooting the 1395 machine. If this is the case you will get a kernel message like 1396 "failed to reset NO_REBOOT flag, reboot disabled by hardware". 1397 1398 To compile this driver as a module, choose M here: the 1399 module will be called nv_tco. 1400 1401config RDC321X_WDT 1402 tristate "RDC R-321x SoC watchdog" 1403 depends on X86_RDC321X || COMPILE_TEST 1404 depends on PCI 1405 help 1406 This is the driver for the built in hardware watchdog 1407 in the RDC R-321x SoC. 1408 1409 To compile this driver as a module, choose M here: the 1410 module will be called rdc321x_wdt. 1411 1412config 60XX_WDT 1413 tristate "SBC-60XX Watchdog Timer" 1414 depends on X86 1415 help 1416 This driver can be used with the watchdog timer found on some 1417 single board computers, namely the 6010 PII based computer. 1418 It may well work with other cards. It reads port 0x443 to enable 1419 and re-set the watchdog timer, and reads port 0x45 to disable 1420 the watchdog. If you have a card that behave in similar ways, 1421 you can probably make this driver work with your card as well. 1422 1423 You can compile this driver directly into the kernel, or use 1424 it as a module. The module will be called sbc60xxwdt. 1425 1426config SBC8360_WDT 1427 tristate "SBC8360 Watchdog Timer" 1428 depends on X86_32 1429 help 1430 1431 This is the driver for the hardware watchdog on the SBC8360 Single 1432 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com). 1433 1434 To compile this driver as a module, choose M here: the 1435 module will be called sbc8360. 1436 1437 Most people will say N. 1438 1439config SBC7240_WDT 1440 tristate "SBC Nano 7240 Watchdog Timer" 1441 depends on X86_32 && !UML 1442 help 1443 This is the driver for the hardware watchdog found on the IEI 1444 single board computers EPIC Nano 7240 (and likely others). This 1445 watchdog simply watches your kernel to make sure it doesn't freeze, 1446 and if it does, it reboots your computer after a certain amount of 1447 time. 1448 1449 To compile this driver as a module, choose M here: the 1450 module will be called sbc7240_wdt. 1451 1452config CPU5_WDT 1453 tristate "SMA CPU5 Watchdog" 1454 depends on X86 1455 help 1456 TBD. 1457 To compile this driver as a module, choose M here: the 1458 module will be called cpu5wdt. 1459 1460config SMSC_SCH311X_WDT 1461 tristate "SMSC SCH311X Watchdog Timer" 1462 depends on X86 1463 help 1464 This is the driver for the hardware watchdog timer on the 1465 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset 1466 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple 1467 serial ports). 1468 1469 To compile this driver as a module, choose M here: the 1470 module will be called sch311x_wdt. 1471 1472config SMSC37B787_WDT 1473 tristate "Winbond SMsC37B787 Watchdog Timer" 1474 depends on X86 1475 help 1476 This is the driver for the hardware watchdog component on the 1477 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard 1478 from Vision Systems and maybe others. 1479 1480 This watchdog simply watches your kernel to make sure it doesn't 1481 freeze, and if it does, it reboots your computer after a certain 1482 amount of time. 1483 1484 Usually a userspace daemon will notify the kernel WDT driver that 1485 userspace is still alive, at regular intervals. 1486 1487 To compile this driver as a module, choose M here: the 1488 module will be called smsc37b787_wdt. 1489 1490 Most people will say N. 1491 1492config TQMX86_WDT 1493 tristate "TQ-Systems TQMX86 Watchdog Timer" 1494 depends on X86 1495 select WATCHDOG_CORE 1496 help 1497 This is the driver for the hardware watchdog timer in the TQMX86 IO 1498 controller found on some of their ComExpress Modules. 1499 1500 To compile this driver as a module, choose M here; the module 1501 will be called tqmx86_wdt. 1502 1503 Most people will say N. 1504 1505config VIA_WDT 1506 tristate "VIA Watchdog Timer" 1507 depends on X86 && PCI 1508 select WATCHDOG_CORE 1509 help 1510 This is the driver for the hardware watchdog timer on VIA 1511 southbridge chipset CX700, VX800/VX820 or VX855/VX875. 1512 1513 To compile this driver as a module, choose M here; the module 1514 will be called via_wdt. 1515 1516 Most people will say N. 1517 1518config W83627HF_WDT 1519 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles" 1520 depends on X86 1521 select WATCHDOG_CORE 1522 help 1523 This is the driver for the hardware watchdog on the following 1524 Super I/O chips. 1525 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG 1526 W83637HF 1527 W83667HG/HG-B 1528 W83687THF 1529 W83697HF 1530 W83697UG 1531 NCT6775 1532 NCT6776 1533 NCT6779 1534 NCT6791 1535 NCT6792 1536 NCT6102D/04D/06D 1537 NCT6116D 1538 1539 This watchdog simply watches your kernel to make sure it doesn't 1540 freeze, and if it does, it reboots your computer after a certain 1541 amount of time. 1542 1543 To compile this driver as a module, choose M here: the 1544 module will be called w83627hf_wdt. 1545 1546 Most people will say N. 1547 1548config W83877F_WDT 1549 tristate "W83877F (EMACS) Watchdog Timer" 1550 depends on X86 1551 help 1552 This is the driver for the hardware watchdog on the W83877F chipset 1553 as used in EMACS PC-104 motherboards (and likely others). This 1554 watchdog simply watches your kernel to make sure it doesn't freeze, 1555 and if it does, it reboots your computer after a certain amount of 1556 time. 1557 1558 To compile this driver as a module, choose M here: the 1559 module will be called w83877f_wdt. 1560 1561 Most people will say N. 1562 1563config W83977F_WDT 1564 tristate "W83977F (PCM-5335) Watchdog Timer" 1565 depends on X86 1566 help 1567 This is the driver for the hardware watchdog on the W83977F I/O chip 1568 as used in AAEON's PCM-5335 SBC (and likely others). This 1569 watchdog simply watches your kernel to make sure it doesn't freeze, 1570 and if it does, it reboots your computer after a certain amount of 1571 time. 1572 1573 To compile this driver as a module, choose M here: the 1574 module will be called w83977f_wdt. 1575 1576config MACHZ_WDT 1577 tristate "ZF MachZ Watchdog" 1578 depends on X86 1579 help 1580 If you are using a ZF Micro MachZ processor, say Y here, otherwise 1581 N. This is the driver for the watchdog timer built-in on that 1582 processor using ZF-Logic interface. This watchdog simply watches 1583 your kernel to make sure it doesn't freeze, and if it does, it 1584 reboots your computer after a certain amount of time. 1585 1586 To compile this driver as a module, choose M here: the 1587 module will be called machzwd. 1588 1589config SBC_EPX_C3_WATCHDOG 1590 tristate "Winsystems SBC EPX-C3 watchdog" 1591 depends on X86 1592 help 1593 This is the driver for the built-in watchdog timer on the EPX-C3 1594 Single-board computer made by Winsystems, Inc. 1595 1596 *Note*: This hardware watchdog is not probeable and thus there 1597 is no way to know if writing to its IO address will corrupt 1598 your system or have any real effect. The only way to be sure 1599 that this driver does what you want is to make sure you 1600 are running it on an EPX-C3 from Winsystems with the watchdog 1601 timer at IO address 0x1ee and 0x1ef. It will write to both those 1602 IO ports. Basically, the assumption is made that if you compile 1603 this driver into your kernel and/or load it as a module, that you 1604 know what you are doing and that you are in fact running on an 1605 EPX-C3 board! 1606 1607 To compile this driver as a module, choose M here: the 1608 module will be called sbc_epx_c3. 1609 1610config INTEL_MEI_WDT 1611 tristate "Intel MEI iAMT Watchdog" 1612 depends on INTEL_MEI && X86 1613 select WATCHDOG_CORE 1614 help 1615 A device driver for the Intel MEI iAMT watchdog. 1616 1617 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog. 1618 Whenever the OS hangs or crashes, iAMT will send an event 1619 to any subscriber to this event. The watchdog doesn't reset the 1620 the platform. 1621 1622 To compile this driver as a module, choose M here: 1623 the module will be called mei_wdt. 1624 1625config NI903X_WDT 1626 tristate "NI 903x/913x Watchdog" 1627 depends on X86 && ACPI 1628 select WATCHDOG_CORE 1629 help 1630 This is the driver for the watchdog timer on the National Instruments 1631 903x/913x real-time controllers. 1632 1633 To compile this driver as a module, choose M here: the module will be 1634 called ni903x_wdt. 1635 1636config NIC7018_WDT 1637 tristate "NIC7018 Watchdog" 1638 depends on X86 && ACPI 1639 select WATCHDOG_CORE 1640 help 1641 Support for National Instruments NIC7018 Watchdog. 1642 1643 To compile this driver as a module, choose M here: the module will be 1644 called nic7018_wdt. 1645 1646config SIEMENS_SIMATIC_IPC_WDT 1647 tristate "Siemens Simatic IPC Watchdog" 1648 depends on SIEMENS_SIMATIC_IPC 1649 select WATCHDOG_CORE 1650 select P2SB 1651 help 1652 This driver adds support for several watchdogs found in Industrial 1653 PCs from Siemens. 1654 1655 To compile this driver as a module, choose M here: the module will be 1656 called simatic-ipc-wdt. 1657 1658# M68K Architecture 1659 1660config M54xx_WATCHDOG 1661 tristate "MCF54xx watchdog support" 1662 depends on M548x 1663 help 1664 To compile this driver as a module, choose M here: the 1665 module will be called m54xx_wdt. 1666 1667# MicroBlaze Architecture 1668 1669# MIPS Architecture 1670 1671config ATH79_WDT 1672 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog" 1673 depends on ATH79 || (ARM && COMPILE_TEST) 1674 help 1675 Hardware driver for the built-in watchdog timer on the Atheros 1676 AR71XX/AR724X/AR913X SoCs. 1677 1678config BCM47XX_WDT 1679 tristate "Broadcom BCM47xx Watchdog Timer" 1680 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST 1681 select WATCHDOG_CORE 1682 help 1683 Hardware driver for the Broadcom BCM47xx Watchdog Timer. 1684 1685config RC32434_WDT 1686 tristate "IDT RC32434 SoC Watchdog Timer" 1687 depends on MIKROTIK_RB532 1688 help 1689 Hardware driver for the IDT RC32434 SoC built-in 1690 watchdog timer. 1691 1692 To compile this driver as a module, choose M here: the 1693 module will be called rc32434_wdt. 1694 1695config INDYDOG 1696 tristate "Indy/I2 Hardware Watchdog" 1697 depends on SGI_HAS_INDYDOG 1698 help 1699 Hardware driver for the Indy's/I2's watchdog. This is a 1700 watchdog timer that will reboot the machine after a 60 second 1701 timer expired and no process has written to /dev/watchdog during 1702 that time. 1703 1704config JZ4740_WDT 1705 tristate "Ingenic jz4740 SoC hardware watchdog" 1706 depends on MIPS 1707 depends on COMMON_CLK 1708 select WATCHDOG_CORE 1709 select MFD_SYSCON 1710 help 1711 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. 1712 1713config WDT_MTX1 1714 tristate "MTX-1 Hardware Watchdog" 1715 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST) 1716 help 1717 Hardware driver for the MTX-1 boards. This is a watchdog timer that 1718 will reboot the machine after a 100 seconds timer expired. 1719 1720config SIBYTE_WDOG 1721 tristate "Sibyte SoC hardware watchdog" 1722 depends on CPU_SB1 1723 help 1724 Watchdog driver for the built in watchdog hardware in Sibyte 1725 SoC processors. There are apparently two watchdog timers 1726 on such processors; this driver supports only the first one, 1727 because currently Linux only supports exporting one watchdog 1728 to userspace. 1729 1730 To compile this driver as a loadable module, choose M here. 1731 The module will be called sb_wdog. 1732 1733config AR7_WDT 1734 tristate "TI AR7 Watchdog Timer" 1735 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST) 1736 help 1737 Hardware driver for the TI AR7 Watchdog Timer. 1738 1739config TXX9_WDT 1740 tristate "Toshiba TXx9 Watchdog Timer" 1741 depends on CPU_TX49XX || (MIPS && COMPILE_TEST) 1742 select WATCHDOG_CORE 1743 help 1744 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs. 1745 1746config OCTEON_WDT 1747 tristate "Cavium OCTEON SOC family Watchdog Timer" 1748 depends on CAVIUM_OCTEON_SOC 1749 default y 1750 select WATCHDOG_CORE 1751 select EXPORT_UASM if OCTEON_WDT = m 1752 help 1753 Hardware driver for OCTEON's on chip watchdog timer. 1754 Enables the watchdog for all cores running Linux. It 1755 installs a NMI handler and pokes the watchdog based on an 1756 interrupt. On first expiration of the watchdog, the 1757 interrupt handler pokes it. The second expiration causes an 1758 NMI that prints a message. The third expiration causes a 1759 global soft reset. 1760 1761 When userspace has /dev/watchdog open, no poking is done 1762 from the first interrupt, it is then only poked when the 1763 device is written. 1764 1765config BCM2835_WDT 1766 tristate "Broadcom BCM2835 hardware watchdog" 1767 depends on ARCH_BCM2835 || (OF && COMPILE_TEST) 1768 select WATCHDOG_CORE 1769 help 1770 Watchdog driver for the built in watchdog hardware in Broadcom 1771 BCM2835 SoC. 1772 1773 To compile this driver as a loadable module, choose M here. 1774 The module will be called bcm2835_wdt. 1775 1776config BCM_KONA_WDT 1777 tristate "BCM Kona Watchdog" 1778 depends on ARCH_BCM_MOBILE || COMPILE_TEST 1779 select WATCHDOG_CORE 1780 help 1781 Support for the watchdog timer on the following Broadcom BCM281xx 1782 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and 1783 BCM28155 variants. 1784 1785 Say 'Y' or 'M' here to enable the driver. The module will be called 1786 bcm_kona_wdt. 1787 1788config BCM_KONA_WDT_DEBUG 1789 bool "DEBUGFS support for BCM Kona Watchdog" 1790 depends on BCM_KONA_WDT 1791 help 1792 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides 1793 access to the driver's internal data structures as well as watchdog 1794 timer hardware registres. 1795 1796 If in doubt, say 'N'. 1797 1798config BCM7038_WDT 1799 tristate "BCM63xx/BCM7038 Watchdog" 1800 select WATCHDOG_CORE 1801 depends on HAS_IOMEM 1802 depends on ARCH_BCM4908 || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST 1803 help 1804 Watchdog driver for the built-in hardware in Broadcom 7038 and 1805 later SoCs used in set-top boxes. BCM7038 was made public 1806 during the 2004 CES, and since then, many Broadcom chips use this 1807 watchdog block, including some cable modem chips and DSL (63xx) 1808 chips. 1809 1810config IMGPDC_WDT 1811 tristate "Imagination Technologies PDC Watchdog Timer" 1812 depends on HAS_IOMEM 1813 depends on MIPS || COMPILE_TEST 1814 select WATCHDOG_CORE 1815 help 1816 Driver for Imagination Technologies PowerDown Controller 1817 Watchdog Timer. 1818 1819 To compile this driver as a loadable module, choose M here. 1820 The module will be called imgpdc_wdt. 1821 1822config LANTIQ_WDT 1823 tristate "Lantiq SoC watchdog" 1824 depends on LANTIQ 1825 select WATCHDOG_CORE 1826 help 1827 Hardware driver for the Lantiq SoC Watchdog Timer. 1828 1829config LOONGSON1_WDT 1830 tristate "Loongson1 SoC hardware watchdog" 1831 depends on MACH_LOONGSON32 1832 select WATCHDOG_CORE 1833 help 1834 Hardware driver for the Loongson1 SoC Watchdog Timer. 1835 1836config RALINK_WDT 1837 tristate "Ralink SoC watchdog" 1838 select WATCHDOG_CORE 1839 depends on RALINK 1840 help 1841 Hardware driver for the Ralink SoC Watchdog Timer. 1842 1843config GXP_WATCHDOG 1844 tristate "HPE GXP watchdog support" 1845 depends on ARCH_HPE_GXP 1846 select WATCHDOG_CORE 1847 help 1848 Say Y here to include support for the watchdog timer 1849 in HPE GXP SoCs. 1850 1851 To compile this driver as a module, choose M here. 1852 The module will be called gxp-wdt. 1853 1854config MT7621_WDT 1855 tristate "Mediatek SoC watchdog" 1856 select WATCHDOG_CORE 1857 depends on SOC_MT7620 || SOC_MT7621 1858 help 1859 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer. 1860 1861config PIC32_WDT 1862 tristate "Microchip PIC32 hardware watchdog" 1863 select WATCHDOG_CORE 1864 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1865 help 1866 Watchdog driver for the built in watchdog hardware in a PIC32. 1867 1868 Configuration bits must be set appropriately for the watchdog to be 1869 controlled by this driver. 1870 1871 To compile this driver as a loadable module, choose M here. 1872 The module will be called pic32-wdt. 1873 1874config PIC32_DMT 1875 tristate "Microchip PIC32 Deadman Timer" 1876 select WATCHDOG_CORE 1877 depends on MACH_PIC32 || (MIPS && COMPILE_TEST) 1878 help 1879 Watchdog driver for PIC32 instruction fetch counting timer. This 1880 specific timer is typically be used in mission critical and safety 1881 critical applications, where any single failure of the software 1882 functionality and sequencing must be detected. 1883 1884 To compile this driver as a loadable module, choose M here. 1885 The module will be called pic32-dmt. 1886 1887# PARISC Architecture 1888 1889# POWERPC Architecture 1890 1891config GEF_WDT 1892 tristate "GE Watchdog Timer" 1893 depends on GE_FPGA 1894 help 1895 Watchdog timer found in a number of GE single board computers. 1896 1897config MPC5200_WDT 1898 bool "MPC52xx Watchdog Timer" 1899 depends on PPC_MPC52xx || COMPILE_TEST 1900 help 1901 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog. 1902 1903config 8xxx_WDT 1904 tristate "MPC8xxx Platform Watchdog Timer" 1905 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x 1906 select WATCHDOG_CORE 1907 help 1908 This driver is for a SoC level watchdog that exists on some 1909 Freescale PowerPC processors. So far this driver supports: 1910 - MPC8xx watchdogs 1911 - MPC83xx watchdogs 1912 - MPC86xx watchdogs 1913 1914 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead. 1915 1916config PIKA_WDT 1917 tristate "PIKA FPGA Watchdog" 1918 depends on WARP || (PPC64 && COMPILE_TEST) 1919 default y 1920 help 1921 This enables the watchdog in the PIKA FPGA. Currently used on 1922 the Warp platform. 1923 1924config BOOKE_WDT 1925 tristate "PowerPC Book-E Watchdog Timer" 1926 depends on BOOKE || 4xx 1927 select WATCHDOG_CORE 1928 help 1929 Watchdog driver for PowerPC Book-E chips, such as the Freescale 1930 MPC85xx SOCs and the IBM PowerPC 440. 1931 1932 Please see Documentation/watchdog/watchdog-api.rst for 1933 more information. 1934 1935config BOOKE_WDT_DEFAULT_TIMEOUT 1936 int "PowerPC Book-E Watchdog Timer Default Timeout" 1937 depends on BOOKE_WDT 1938 default 38 if PPC_FSL_BOOK3E 1939 range 0 63 if PPC_FSL_BOOK3E 1940 default 3 if !PPC_FSL_BOOK3E 1941 range 0 3 if !PPC_FSL_BOOK3E 1942 help 1943 Select the default watchdog timer period to be used by the PowerPC 1944 Book-E watchdog driver. A watchdog "event" occurs when the bit 1945 position represented by this number transitions from zero to one. 1946 1947 For Freescale Book-E processors, this is a number between 0 and 63. 1948 For other Book-E processors, this is a number between 0 and 3. 1949 1950 The value can be overridden by the wdt_period command-line parameter. 1951 1952config MEN_A21_WDT 1953 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer" 1954 select WATCHDOG_CORE 1955 depends on GPIOLIB || COMPILE_TEST 1956 help 1957 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards. 1958 1959 The driver can also be built as a module. If so, the module will be 1960 called mena21_wdt. 1961 1962 If unsure select N here. 1963 1964# PPC64 Architecture 1965 1966config PSERIES_WDT 1967 tristate "POWER Architecture Platform Watchdog Timer" 1968 depends on PPC_PSERIES 1969 select WATCHDOG_CORE 1970 help 1971 Driver for virtual watchdog timers provided by PAPR 1972 hypervisors (e.g. PowerVM, KVM). 1973 1974config WATCHDOG_RTAS 1975 tristate "RTAS watchdog" 1976 depends on PPC_RTAS 1977 help 1978 This driver adds watchdog support for the RTAS watchdog. 1979 1980 To compile this driver as a module, choose M here. The module 1981 will be called wdrtas. 1982 1983# S390 Architecture 1984 1985config DIAG288_WATCHDOG 1986 tristate "System z diag288 Watchdog" 1987 depends on S390 1988 select WATCHDOG_CORE 1989 help 1990 IBM s/390 and zSeries machines running under z/VM 5.1 or later 1991 provide a virtual watchdog timer to their guest that cause a 1992 user define Control Program command to be executed after a 1993 timeout. 1994 LPAR provides a very similar interface. This driver handles 1995 both. 1996 1997 To compile this driver as a module, choose M here. The module 1998 will be called diag288_wdt. 1999 2000# SUPERH (sh + sh64) Architecture 2001 2002config SH_WDT 2003 tristate "SuperH Watchdog" 2004 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST) 2005 select WATCHDOG_CORE 2006 help 2007 This driver adds watchdog support for the integrated watchdog in the 2008 SuperH processors. If you have one of these processors and wish 2009 to have watchdog support enabled, say Y, otherwise say N. 2010 2011 As a side note, saying Y here will automatically boost HZ to 1000 2012 so that the timer has a chance to clear the overflow counter. On 2013 slower systems (such as the SH-2 and SH-3) this will likely yield 2014 some performance issues. As such, the WDT should be avoided here 2015 unless it is absolutely necessary. 2016 2017 To compile this driver as a module, choose M here: the 2018 module will be called shwdt. 2019 2020# SPARC Architecture 2021 2022# SPARC64 Architecture 2023 2024config WATCHDOG_CP1XXX 2025 tristate "CP1XXX Hardware Watchdog support" 2026 depends on SPARC64 && PCI 2027 help 2028 This is the driver for the hardware watchdog timers present on 2029 Sun Microsystems CompactPCI models CP1400 and CP1500. 2030 2031 To compile this driver as a module, choose M here: the 2032 module will be called cpwatchdog. 2033 2034 If you do not have a CompactPCI model CP1400 or CP1500, or 2035 another UltraSPARC-IIi-cEngine boardset with hardware watchdog, 2036 you should say N to this option. 2037 2038config WATCHDOG_RIO 2039 tristate "RIO Hardware Watchdog support" 2040 depends on SPARC64 && PCI 2041 help 2042 Say Y here to support the hardware watchdog capability on Sun RIO 2043 machines. The watchdog timeout period is normally one minute but 2044 can be changed with a boot-time parameter. 2045 2046config WATCHDOG_SUN4V 2047 tristate "Sun4v Watchdog support" 2048 select WATCHDOG_CORE 2049 depends on SPARC64 2050 help 2051 Say Y here to support the hypervisor watchdog capability embedded 2052 in the SPARC sun4v architecture. 2053 2054 To compile this driver as a module, choose M here. The module will 2055 be called sun4v_wdt. 2056 2057# XTENSA Architecture 2058 2059# Xen Architecture 2060 2061config XEN_WDT 2062 tristate "Xen Watchdog support" 2063 depends on XEN 2064 select WATCHDOG_CORE 2065 help 2066 Say Y here to support the hypervisor watchdog capability provided 2067 by Xen 4.0 and newer. The watchdog timeout period is normally one 2068 minute but can be changed with a boot-time parameter. 2069 2070config UML_WATCHDOG 2071 tristate "UML watchdog" 2072 depends on UML || COMPILE_TEST 2073 2074# 2075# ISA-based Watchdog Cards 2076# 2077 2078comment "ISA-based Watchdog Cards" 2079 depends on ISA 2080 2081config PCWATCHDOG 2082 tristate "Berkshire Products ISA-PC Watchdog" 2083 depends on ISA 2084 help 2085 This is the driver for the Berkshire Products ISA-PC Watchdog card. 2086 This card simply watches your kernel to make sure it doesn't freeze, 2087 and if it does, it reboots your computer after a certain amount of 2088 time. This driver is like the WDT501 driver but for different 2089 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. 2090 The PC watchdog cards can be ordered from <http://www.berkprod.com/>. 2091 2092 To compile this driver as a module, choose M here: the 2093 module will be called pcwd. 2094 2095 Most people will say N. 2096 2097config MIXCOMWD 2098 tristate "Mixcom Watchdog" 2099 depends on ISA 2100 help 2101 This is a driver for the Mixcom hardware watchdog cards. This 2102 watchdog simply watches your kernel to make sure it doesn't freeze, 2103 and if it does, it reboots your computer after a certain amount of 2104 time. 2105 2106 To compile this driver as a module, choose M here: the 2107 module will be called mixcomwd. 2108 2109 Most people will say N. 2110 2111config WDT 2112 tristate "WDT Watchdog timer" 2113 depends on ISA 2114 help 2115 If you have a WDT500P or WDT501P watchdog board, say Y here, 2116 otherwise N. It is not possible to probe for this board, which means 2117 that you have to inform the kernel about the IO port and IRQ that 2118 is needed (you can do this via the io and irq parameters) 2119 2120 To compile this driver as a module, choose M here: the 2121 module will be called wdt. 2122 2123# 2124# PCI-based Watchdog Cards 2125# 2126 2127comment "PCI-based Watchdog Cards" 2128 depends on PCI 2129 2130config PCIPCWATCHDOG 2131 tristate "Berkshire Products PCI-PC Watchdog" 2132 depends on PCI 2133 help 2134 This is the driver for the Berkshire Products PCI-PC Watchdog card. 2135 This card simply watches your kernel to make sure it doesn't freeze, 2136 and if it does, it reboots your computer after a certain amount of 2137 time. The card can also monitor the internal temperature of the PC. 2138 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>. 2139 2140 To compile this driver as a module, choose M here: the 2141 module will be called pcwd_pci. 2142 2143 Most people will say N. 2144 2145config WDTPCI 2146 tristate "PCI-WDT500/501 Watchdog timer" 2147 depends on PCI 2148 help 2149 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N. 2150 2151 If you have a PCI-WDT501 watchdog board then you can enable the 2152 temperature sensor by setting the type parameter to 501. 2153 2154 If you want to enable the Fan Tachometer on the PCI-WDT501, then you 2155 can do this via the tachometer parameter. Only do this if you have a 2156 fan tachometer actually set up. 2157 2158 To compile this driver as a module, choose M here: the 2159 module will be called wdt_pci. 2160 2161# 2162# USB-based Watchdog Cards 2163# 2164 2165comment "USB-based Watchdog Cards" 2166 depends on USB 2167 2168config USBPCWATCHDOG 2169 tristate "Berkshire Products USB-PC Watchdog" 2170 depends on USB 2171 help 2172 This is the driver for the Berkshire Products USB-PC Watchdog card. 2173 This card simply watches your kernel to make sure it doesn't freeze, 2174 and if it does, it reboots your computer after a certain amount of 2175 time. The card can also monitor the internal temperature of the PC. 2176 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>. 2177 2178 To compile this driver as a module, choose M here: the 2179 module will be called pcwd_usb. 2180 2181 Most people will say N. 2182 2183config KEEMBAY_WATCHDOG 2184 tristate "Intel Keem Bay SoC non-secure watchdog" 2185 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST) 2186 select WATCHDOG_CORE 2187 help 2188 This option enable support for an In-secure watchdog timer driver for 2189 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every 2190 count unit. An interrupt will be triggered, when the count crosses 2191 the threshold configured in the register. 2192 2193 To compile this driver as a module, choose M here: the 2194 module will be called keembay_wdt. 2195 2196endif # WATCHDOG 2197