1 config USB_ARCH_HAS_HCD
5 bool "Support for Host-side USB"
6 depends on USB_ARCH_HAS_HCD
8 Universal Serial Bus (USB) is a specification for a serial bus
9 subsystem which offers higher speeds and more features than the
10 traditional PC serial port. The bus supplies power to peripherals
11 and allows for hot swapping. Up to 127 USB peripherals can be
12 connected to a single USB host in a tree structure.
14 The USB host is the root of the tree, the peripherals are the
15 leaves and the inner nodes are special USB devices called hubs.
16 Most PCs now have USB host ports, used to connect peripherals
17 such as scanners, keyboards, mice, modems, cameras, disks,
18 flash memory, network links, and printers to the PC.
20 Say Y here if your computer has a host-side USB port and you want
21 to use USB devices. You then need to say Y to at least one of the
22 Host Controller Driver (HCD) options below. Choose a USB 1.1
23 controller, such as "UHCI HCD support" or "OHCI HCD support",
24 and "EHCI HCD (USB 2.0) support" except for older systems that
25 do not have USB 2.0 support. It doesn't normally hurt to select
26 them all if you are not certain.
28 If your system has a device-side USB port, used in the peripheral
29 side of the USB protocol, see the "USB Gadget" framework instead.
31 After choosing your HCD, then select drivers for the USB peripherals
32 you'll be using. You may want to check out the information provided
33 in <file:Documentation/usb/> and especially the links given in
34 <file:Documentation/usb/usb-help.txt>.
39 bool "Enable driver model for USB"
42 Enable driver model for USB. The USB interface is then implemented
43 by the USB uclass. Multiple USB controllers of different types
44 (XHCI, EHCI) can be attached and used. The 'usb' command works as
45 normal. OCHI is not supported at present.
47 Much of the code is shared but with this option enabled the USB
48 uclass takes care of device enumeration. USB devices can be
49 declared with the USB_DEVICE() macro and will be automatically
50 probed when found on the bus.
52 source "drivers/usb/host/Kconfig"
54 source "drivers/usb/emul/Kconfig"
57 bool "USB Mass Storage support"
59 Say Y here if you want to connect USB mass storage devices to your
63 bool "USB Keyboard support"
65 Say Y here if you want to use a USB keyboard for U-Boot command line
71 prompt "USB keyboard polling"
74 Enable a polling mechanism for USB keyboard.
76 config SYS_USB_EVENT_POLL
77 bool "Interrupt polling"
79 config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
80 bool "Poll via interrupt queue"
82 config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
83 bool "Poll via control EP"