Hello. We are trying to reset MCU from within MCU by asserting SYSRESETREQ it in Cortex M4 AIRCR register (by calling NVIC_SystemReset). After that the MCU halts and FW is not running.

[dimax]

If we emulate the MCU watchdog reset on STM32MP1 it works fine. MCU is got restarted and runs after that.

SYSRESETREQ assertion (by calling NVIC_SystemReset) works fine with dedicated M4 processor.

We wander what can be a problem on STM32MP1 ?

[CC]

The watchdog solution should be sufficient until we are ready for Linux to manage it.

The use case is that some settings of our firmware require a reset and to support our messaging protocol (firmware will receive a message to reset itself).

Thank you for the support.