Power & Source of Big Ideas

Hi all in the forum
Is it possible to build a realtime kernel which runs on the RK3399 nanopi M4 platform?
If it is, where may I find instructions on how to do that?
Thanks
Maurizio
Hi all,
because of difficult to access SD slot in our product equipped with nanopi M1 plus, is there any possibility to configure U-boot to boot from USB bootable stick instead of sd card?
I'm looking for either a permanent setup or a transient once boot has been stopped by pressing space bar.