I'm working with a custom board which was intended to be used with the CM3 (not the lite version). Due to low stock I've bought some Lite instead (and back ordered the CM3, but will take ~3 weeks to arrive).
I have an SD, for external storage, connected to pins GPIO34-39. I don't care about the extra 4 s boot as for now I'm just developing and it's only a quick fix while I wait for the CM3 to turn up.
Has any work been done in this direction? Otherwise, could I modify the boot code sent through the USB to configure this interface instead of the eMMC to boot the system?
Thank you and best regards,