Resolved! 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.
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 ?