Maynard,
[quote user="Maynard Cabiente"]For the DM8168 boards, the WD_OUT pin is gated to the PORn (power-on reset) pin of the DM8168 board. So, in this case, HDVPSS will probably get reset correctly and the problem will not happen.[/quote]
[quote user="Maynard Cabiente"]For the DM8148 boards, RSTOUTn_WD_OUT is not gated to the PORn pin of the DM8148 board. We just followed this part of the circuitry in our AM3874 board.
Do we need to follow the DM8168 EVM board watchdog reset circuitry and connect it to the PORn pin to make this work properly? [/quote]
No, I do not think you should follow the DM8168 EVM watchdog reset circuitry for DM814x/AM387x board. The DM816x device has silicon bug, described in the DM816x Silicon Errata: http://www.ti.com/lit/er/sprz329d/sprz329d.pdf