Hi,
We wanted a watchdog during the U-Boot process so I added hw_watchdog_init() and hw_watchdog_reset() functions to U-Boot for my board. The watchdog timer works fine in U-Boot but now when Linux reboots it gets stuck on:
[ 180.339543] reboot: Restarting system
When the watchdog is not activated, it reboots fine. Even when the watchdog timer expires it does not reboot, it just hangs. I tried to activate the watchdog using only the memory write function in U-Boot which sets the WATCHDOGEN bit in the RTC ctrl register:
mw 0x80056004 0x00000010
(yes, watchdog timer is already set to 60000 ms) Only that change prevents Linux from rebooting. I don't have any clue on what can be the cause of the problem.
Any help would be appreciated. Thanks!
Jocelyn