AM6548: Disabling M3 Watchdog for debugging. Can't find register descriptions for WWRTI_KICKx, WWRTI_CLK_CTRL

For debugging it is necessarry to disable the M3 watchdog. This works fine but i can't find a comlete register desciption in the AM65x/DRA80xM Processors Technical Reference Manual.
Where can i find a description of these registers ?

cutout from romclean.gel:

/* Watchdog registers */
#define WWRTI_KICK0     *((unsigned int *)(0x44135100 + 0x20))
#define WWRTI_KICK1     *((unsigned int *)(0x44135100 + 0x24))
#define WWRTI_CLK_CTRL  *((unsigned int *)(0x44135100 + 0x50))

/* Disable the watchdog timer */
 WWRTI_KICK0    = 0x4658fc21;
 WWRTI_KICK1    = 0x3ac4f102;
 WWRTI_CLK_CTRL = 0xa;
 WWRTI_KICK0    = 0;
 WWRTI_KICK1    = 0;