While fixing RTC issue (rtc not seen in /dev), I came across a fix that required setting CONFIG_WDAT_WDT (watchdog related) to n. Although this fixed my RTC and started showing up in /dev, my device is rebooting continuously after every 10 min with following message on console:
Read TcoWatchdogTimerStatus:2
Write and Read TcoWatchdogTimerStatus:2
Some Info:
Config change -
CONFIG_WDAT_WDT=n
CONFIG_ACPI_WATCHD=n
CONFIG_RTC_HCTOSYS=n
CONFIG_RTC_DEBUG=n
From device -
iotadmin@localhost:~$ snap get core watchdog
Key Value
watchdog.runtime-timeout 3m
watchdog.shutdown-timeout 8m
iotadmin@localhost:~$