Hi Pavel :
I appreciate your reply!
I am a little confused about your description.
0x0: RSTOUTn is asserted when a Watchdog Timer reset, POR, RESET, or Emulation/Software-Global Cold/Warm reset occurs
0x1: RSTOUT_WD_OUTn is asserted only when a Watchdog Timer reset occurs
RSTOUTn and RSTOUT_WD_OUTn are the same pin,right?
Because I can not find RSTOUTn in hardware schematic of TI8148 EVM board.
If my understanding is correct, no matter what the BTMODE[11] RSTOUT_WD_OUTn Configuration is, it should be asserted when watchdog overflow.
Below is part of hardware schematic of TI8148 EVM board which is related with RSTOUTn_WD_OUT.
I do not know if there is something wrong with the circuit.
I have test sawatchdog in TI8148EVM board, but I do not see RSTOUT_WD_OUTn is pulled low when watchdog overflow.
I also use SD card that comes from with TI8148 EVM board and execute sawatchdog to test RSTOUT_WD_OUTn, but the result is the same.
RSTOUT_WD_OUTn is always high even though the watchdog overflow and system reboot.
The message "OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec" shows when kernel is loaded.
But I can not see "<*> OMAP Watchdog" option when I execute make menuconfig.
I do not know if it is a hardware or software issue.
Please kindly give me your suggestion, because we need RSTOUT_WD_OUTn pin to reset whole system.
Best regards,
Marcus