topic Re: Some USB storage devices only work through external hub in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/Some-USB-storage-devices-only-work-through-external-hub/m-p/655899#M100513 <HTML><HEAD></HEAD><BODY><P>Please try to connect device with shorter USB cable. Long cable may cause some issues on high speed.</P><P></P><P></P><P>Have a great day,<BR />Victor</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 17 Mar 2017 05:53:15 GMT b36401 2017-03-17T05:53:15Z Some USB storage devices only work through external hub https://community.nxp.com/t5/i-MX-Processors/Some-USB-storage-devices-only-work-through-external-hub/m-p/655898#M100512 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I have an i.MX6Q on a custom baseboard. USB is connected via the USB Host interface.</P><P></P><P>When directly connected, I have a subset of USB drives which do not "work well." I get "EHCI Timed Out on Token" errors when reading from U-Boot, and in Linux the drives will sporadically disconnect-reconnect.</P><P></P><P>If I connect an external un-powered USB hub (testing with an Anker 4-port hub) to the i.MX6Q USB Host port, all of the drives work great through the hub.</P><P></P><P>I've seen similar discussions in the community with solutions about changing load address in U-Boot, etc. but they don't seem to apply here.</P><P></P><P>Anyone experience anything similar? Thank you.</P></BODY></HTML> Wed, 15 Mar 2017 14:50:10 GMT https://community.nxp.com/t5/i-MX-Processors/Some-USB-storage-devices-only-work-through-external-hub/m-p/655898#M100512 chrgrff1 2017-03-15T14:50:10Z Re: Some USB storage devices only work through external hub https://community.nxp.com/t5/i-MX-Processors/Some-USB-storage-devices-only-work-through-external-hub/m-p/655899#M100513 <HTML><HEAD></HEAD><BODY><P>Please try to connect device with shorter USB cable. Long cable may cause some issues on high speed.</P><P></P><P></P><P>Have a great day,<BR />Victor</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 17 Mar 2017 05:53:15 GMT https://community.nxp.com/t5/i-MX-Processors/Some-USB-storage-devices-only-work-through-external-hub/m-p/655899#M100513 b36401 2017-03-17T05:53:15Z