Artesyn COMX-P4080 Installation and Use (August 2014) - Manual (Page 105)

BSP Operations
COMX-P4080 COM Express Module Installation and Use (6806800L20C) 105
7.16 USB
COMX-P4080 uses the USB2 as the USB host interface. USB1 is disabled. USB PHY (USB3315) is
connected to USB2 host interface through ULPI interface. The COMX-P4080 also has one four
port USB hub (USB2514) connected to the USB PHY, making it a total of four provided ports.
U-Boot provides "usb" utililties to operate the USB sticks:
Note that "usb start/reset" must be executed before the other commands can be run. Below
are usage samples of "usb start.
Utility Function
usb reset Resets or rescans USB controller
usb stop [f] Stops USB [f]=force stop
usb tree Shows USB device tree
usb info [dev] Shows available USB devices
usb storage Shows details of USB storage devices
usb dev [dev] Shows or set current USB storage device
usb part [dev] Prints partition table of one or all USB storage devices
usb read addr blk# cnt Reads `cnt' blocks starting at block `blk#' to memory address
`addr‘
usb write addr blk# cnt Writes `cnt' blocks starting at block `blk#' from memory
address `addr'
=> usb start
(Re)start USB...
USB: Register 10011 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 3 USB Device(s) found
scanning bus for storage devices... 1 Storage Device(s) found