Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/DTS/DTS_PVTIRQTRMASKR#0x0
DTS PVT IRQ timer mask register
Timer IRQ source mask bit
https://github.com/modm-io/cmsis-svd-stm32