Watchdog driver general info CONFIG_HW_WATCHDOG This enables hw_watchdog_reset to be called during various loops, including waiting for a character on a serial port. But it does not also call hw_watchdog_init. Boards which want this enabled must call this function in their board file. This split is useful because some rom's enable the watchdog when downloading new code, so it must be serviced, but the board would rather it was off. And, it cannot always be turned off once on. CONFIG_WATCHDOG_TIMEOUT_MSECS Can be used to change the timeout for i.mx31/35/5x/6x. If not given, will default to maximum timeout. This would be 128000 msec for i.mx31/35/5x/6x. CONFIG_AT91SAM9_WATCHDOG Available for AT91SAM9 to service the watchdog. CONFIG_FTWDT010_WATCHDOG Available for FTWDT010 to service the watchdog. CONFIG_FTWDT010_HW_TIMEOUT Can be used to change the timeout for FTWDT010. CONFIG_IMX_WATCHDOG Available for i.mx31/35/5x/6x to service the watchdog. This is not automatically set because some boards (vision2) still need to define their own hw_watchdog_reset routine. TODO: vision2 is removed now, so perhaps this can be changed. CONFIG_XILINX_TB_WATCHDOG Available for Xilinx Axi platforms to service timebase watchdog timer.