On Thu, Jul 25, 2013 at 12:37 AM, Peter Chen <peter.chen at freescale.com> wrote: > seems u-boot already support mx53. > > Can you measure the host 1 vbus pin? The vbus should be 5v to let > the host works normal. The VBUS is the same for both USBH1 port and OTG ports and it is at 5V, since OTG port does work.