4 Universal Serial Bus (USB) is a specification for a serial bus
5 subsystem which offers higher speeds and more features than the
6 traditional PC serial port. The bus supplies power to peripherals
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
13 such as scanners, keyboards, mice, modems, cameras, disks,
14 flash memory, network links, and printers to the PC.
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
21 controller, such as "UHCI HCD support" or "OHCI HCD support",
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
24 them all if you are not certain.
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
30 you'll be using. You may want to check out the information provided
31 in <file:Documentation/usb/> and especially the links given in
32 <file:Documentation/usb/usb-help.txt>.
38 depends on DM && OF_CONTROL
40 Enable driver model for USB. The USB interface is then implemented
41 by the USB uclass. Multiple USB controllers of different types
42 (XHCI, EHCI, OHCI) can be attached and used. The 'usb' command works
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
47 declared with the U_BOOT_USB_DEVICE() macro and will be
48 automatically probed when found on the bus.
51 bool "Enable driver model for USB host mode in SPL"
52 depends on SPL_DM && DM_USB
53 default n if ARCH_MVEBU
57 bool "Enable driver model for USB Gadget"
60 Enable driver model for USB Gadget (Peripheral
63 config SPL_DM_USB_GADGET
64 bool "Enable driver model for USB Gadget in SPL"
67 Enable driver model for USB Gadget in SPL
70 source "drivers/usb/host/Kconfig"
72 source "drivers/usb/isp1760/Kconfig"
74 source "drivers/usb/cdns3/Kconfig"
76 source "drivers/usb/dwc3/Kconfig"
78 source "drivers/usb/mtu3/Kconfig"
80 source "drivers/usb/musb/Kconfig"
82 source "drivers/usb/musb-new/Kconfig"
84 source "drivers/usb/emul/Kconfig"
86 source "drivers/usb/phy/Kconfig"
88 source "drivers/usb/ulpi/Kconfig"
92 comment "USB peripherals"
95 bool "USB Mass Storage support"
97 Say Y here if you want to connect USB mass storage devices to your
101 bool "USB Keyboard support"
102 select DM_KEYBOARD if DM_USB
103 select SYS_STDIO_DEREGISTER
105 Say Y here if you want to use a USB keyboard for U-Boot command line
108 config USB_ONBOARD_HUB
109 bool "Onboard USB hub support"
112 Say Y here if you want to support discrete onboard USB hubs that
113 don't require an additional control bus for initialization, but
114 need some non-trivial form of initialization, such as enabling a
115 power regulator. An example for such a hub is the Microchip
118 config USB_HUB_DEBOUNCE_TIMEOUT
119 int "Timeout in milliseconds for USB HUB connection"
122 Value in milliseconds of the USB connection timeout, the max delay to
123 wait the hub port status to be connected steadily after being powered
124 off and powered on in the usb hub driver.
125 This define allows to increase the HUB_DEBOUNCE_TIMEOUT default
126 value = 1s because some usb device needs around 1.5s to be initialized
127 and a 2s value should solve detection issue on problematic USB keys.
131 config USB_KEYBOARD_FN_KEYS
132 bool "USB keyboard function key support"
134 Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE,
135 END, PAGE UP, and PAGE DOWN.
138 prompt "USB keyboard polling"
139 default SYS_USB_EVENT_POLL_VIA_INT_QUEUE if ARCH_SUNXI
140 default SYS_USB_EVENT_POLL
142 Enable a polling mechanism for USB keyboard.
144 config SYS_USB_EVENT_POLL
145 bool "Interrupt polling"
147 config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
148 bool "Poll via interrupt queue"
150 config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
151 bool "Poll via control EP"
157 source "drivers/usb/eth/Kconfig"
161 source "drivers/usb/gadget/Kconfig"