Disable/enable UART1 from application - is it possible?

[zzolax]

I have an application for nrf52840, normally the serial is turned off in conf file to save power, but I would like to turn it on sometimes (for example, for 30 seconds after each reboot to be able to configure the device).
Is this possible?

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[nordicjm]

You can do this using power management, there is a sample showing how to do this: https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/boards/nrf/system_off you can adapt it to use UART1 instead and suspend/resume it as needed at run time.