Common watchdog properties. Optional properties: - timeout-sec : Timeout of the watchdog in seconds If this timeout is not defined, the value of WATCHDOG_TIMEOUT_MSECS will be used instead. - hw_margin_ms : Period used to reset the watchdog in ms If this period is not defined, the default value is 1000. - u-boot,noautostart : - u-boot,autostart : These (mutually exclusive) boolean properties can be used to control whether the watchdog is automatically started when probed. If neither are present, the behaviour is determined by the config option WATCHDOG_AUTOSTART.