[U-Boot] about am335x watchdog

Hi Tom,

In commit 6843918e0035bf06cb65ad2b4c98b38e86e43bd5: am335x: Enable CONFIG_OMAP_WATCHDOG support, hardware watchdog is enabled for am335x by default which is disabled in SPL, is this required by Linux or U-Boot itself ? I am asking because when testing with VxWorks (watchdog driver not configured) , I saw random reboot a few seconds after kernel booted. Does U-Boot expect OS to handle such cases ? Thanks.

Miao