gerald vahe

Using OTG port on iMX25 PDK as Host Mass Storage

Discussion created by gerald vahe Employee on Apr 7, 2011
Latest reply on Apr 21, 2011 by gerald vahe



Recently, I was alerted to a customer having issues getting the USB OTG port functioning as a host on the iMX25 PDK with the 09_12 Linux drop.  So, I decided to try it.


It turns out that the loading of the modules have to be done in a particular order, or it will not work.


To get mass storage working to detect a USB Thumb Drive:  (Again, you MUST follow this order)


1) modprobe fsl_otg_arc

2) modprobe ehci-hcd


Of course, these modules must be selected in the USB features. 


Hope this helps.