On Wed, May 23, 2012 at 10:07 AM, Marek Vasut <marex at denx.de> wrote: > This is correct, it should be inverted. So where in your code you powerup the USB? There should be a: gpio_direction_output(MX28_PAD_AUART3_TX__GPIO_3_13, 0); ,somewhere in order to power your USB on then.