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