Lines Matching refs:USB

1 menuconfig USB  config
2 	bool "USB support"
4 	  Universal Serial Bus (USB) is a specification for a serial bus
7 	  and allows for hot swapping.  Up to 127 USB peripherals can be
8 	  connected to a single USB host in a tree structure.
10 	  The USB host is the root of the tree, the peripherals are the
11 	  leaves and the inner nodes are special USB devices called hubs.
12 	  Most PCs now have USB host ports, used to connect peripherals
16 	  Say Y here if your device has an USB port, either host, peripheral or
19 	  For an USB host port, you then need to say Y to at least one of the
20 	  Host Controller Driver (HCD) options below.  Choose a USB 1.1
22 	  and "EHCI HCD (USB 2.0) support" except for older systems that
23 	  do not have USB 2.0 support.  It doesn't normally hurt to select
26 	  If your system has a device-side USB port, used in the peripheral
27 	  side of the USB protocol, see the "USB Gadget" framework instead.
29 	  After choosing your HCD, then select drivers for the USB peripherals
34 if USB
37 	bool "Enable driver model for USB"
38 	depends on USB && DM
40 	  Enable driver model for USB. The USB interface is then implemented
41 	  by the USB uclass. Multiple USB controllers of different types
45 	  Much of the code is shared but with this option enabled the USB
46 	  uclass takes care of device enumeration. USB devices can be
64 comment "USB peripherals"
67 	bool "USB Mass Storage support"
69 	  Say Y here if you want to connect USB mass storage devices to your
70 	  board's USB port.
73 	bool "USB Keyboard support"
76 	  Say Y here if you want to use a USB keyboard for U-Boot command line
82 	prompt "USB keyboard polling"
85 	  Enable a polling mechanism for USB keyboard.