The SD card DAT3 line doesn’t need a pullup resistor on G120E? COM port doesn’t need one either? Are those integral to the SOM or just not needed now? Would be helpful to know what pins on the SoM have pullup / pulldown already installed in case I plan to use them as a GPIO.
(Don’t have a dev board, first test of anything will be a G120E SoM on a produced prototype PCB so can’t really test in advance easily)
Also for using SPI on G120 which is shared with internal flash, the datasheet documentation says the use of CS lines are required (no problem), but what is used for CS for the internal flash and how do I know if it is active or not? Is there a pin I can read the state of to determine if that is being used? Pulling a CS line low to use an SPI device on the same bus without knowing if the other is already active for internal flash is not good.