AnsweredAssumed Answered

USB host doesn't work at High Speed in i.MX25

Question asked by Fernando Martinez on Oct 27, 2014
Latest reply on Oct 28, 2014 by Fernando Martinez



I'm working in custom board based on i.MX25 PDK. I have a USB 2.0 hub (USB2512B) attached to USBPHY2 (USB Host), and I don't get it to work at High Speed (the hub is detected as a Full Speed device). The USB OTG, however, is working at HS without problem. I was told that USBPHY2 is a serial PHY that can only work at Full Speed. Can anyone confirm that it is true? I haven't found official information about this.


Otherwise, what would I have to do to have it working at High Speed? Is there something in the kernel I have to modify? I have tried kernel 2.6.31 and 3.2.60, in both cases the result is the same (full speed).