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).