Power & Source of Big Ideas

Howdy All, Had a quick question I couldn't find an answer to, but the specs say its powered from USB C as either 5v, 9v or 12v, but it doesnt really explain much about what the differences for the device are when powered from any of those three voltages? i.e. if the PD power supply only support 9v, ...
Hi All, Im somewhat confused about the layout of the OS's on the Neo 3... im trying to add a gpio pin for pps (the modules exist, but appears theres nothing in the device tree definition to bind it to a pin). Unfortunately i cant find a single thing about the device tree files for the neo 3, I haven...