AnsweredAssumed Answered

U-Boot USBOTG device mode

Question asked by Juan Manuel Figueroa Iguardia on Sep 13, 2017
Latest reply on Sep 14, 2017 by Juan Manuel Figueroa Iguardia

Hi All,

 

We are working on our custom board that uses an iMX7D and are having issues with USB device mode in U-Boot. We are trying to mount the on board storage device (eMMC) to the USB. On the SABRE board, the storage device enumerates on a laptop but not with our custom board.

 

This is what we do:

 

=> usb start
starting USB...
USB0:   Port not available.
USB1:   USB EHCI 1.00
scanning bus 1 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
=> ums 0 mmc 0
UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0xece000
At this point the progress indicator keeps spinning but nothing enumerates and then we cancel with CTRL-C.
Thanks in advance
Juan

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