We have a board that has fuses set to boot from eeprom. I have uboot loaded in the eeprom and it boots into uboot fine.
I need to run the memory stress test on it. As I understand, there is a SDboot version which needs UART1 and there is a USB OTG version which requires the board to run in serial download mode.
I don't have access to UART1, but I have access to USB OTG, How do I force the board to run in serial download mode?
If I earse the u-boot from eeprom and not have any SD card, will it go into serial download mode? If so, do I have to erase the eeprom in any particular way so the imx6 knows that there is nothing in eeprom to boot and falls back to serial download mode.