AnsweredAssumed Answered

USB Device not work when VDD5V is not attached during boot (iMX28)

Question asked by Kölbl Michael on Jan 16, 2015
Latest reply on Jan 23, 2015 by igorpadykov


our USB Device (mass storage application) is working fine as long as 5V is attached to VDD5V during linux booting. I can then disconnect and reconnect the USB cable and I see my mass storage device again on the PC. But if 5V is NOT attached to VCC5V during booting I can't see my mass storage when connecting the PC. The PC even has not any action when I have the PC's device manager open. It seems like the USB interface of the iMX28 is "off".

Any idea?