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→Handling CPU-initiated software reset
For these reasons it is strongly recommended to use a different approach that, in combination with the use of a processor's watchdog timer (WDT), provides a full hardware reset in case a software reset is issued.
This technique is implemented in [[MITO_8M_Mini_SOM/DESK-MX8MX8M-L|DESK-MX8MX8M-L]]. At the software level, U-Boot and Linux kernel software reset routines make use of the processor's WDT to assert the WDOG_B signal. This signal in turn is routed to the GPIO1_IO02 pad. At the hardware level, this signal is AC-coupled to the master reset pin of the internal supervisor IC. It acts as a complete hardware reset by the assertion of its RESETn output (on the same way of EXT_RESET pin).
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