I'm trying to work out what's causing an approx 13sec delay after power-up of a CM3 on a Waveshare "IO Board Plus".
I'm booting from the CM3's eMMC, and monitoring start progress on the serial console.
After power-on, it takes approx 13sec before i see any output (linux kernel boot log) info on the console.
Does anyone know what causes this delay?
Thanks in advance!