We are currently using an nRF53 in our plant sensor project, where we need to be able to enter sleep mode and be woken up via RTC and GPIO interrupt. Since the nRF53 does not have a G-RTC, it cannot wake up from the RTC when it is in System OFF mode.
Therefore, we are looking at the nRF54, which, according to the documentation, can be woken up by the RTC in System OFF. I have tried porting the code to the nRF54 but have discovered that it is currently not possible to enter System OFF from a non-secure image. On DevZone, I found a related issue from four months ago, which indicates that you were working on a solution:
https://devzone.nordicsemi.com/f/nordic-q-a/118833/nrf54l15-bus-fault-on-system-off
Since we depend on using TF-M and storing our TLS certificates in protected storage, we need to run from a non-secure image. Do you know when it will be possible to enter System OFF mode from a non-secure image on the nRF54? Or is there perhaps another solution we should consider?
