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 comment "USB peripherals in SPL"
133 config SPL_USB_STORAGE
134 bool "Support loading from USB"
136 Enable support for USB devices in SPL. This allows use of USB
137 devices such as hard drives and flash drivers for loading U-Boot.
138 The actual drivers are enabled separately using the normal U-Boot
139 config options. This enables loading from USB using a configured
142 config SYS_USB_FAT_BOOT_PARTITION
143 int "Partition on USB to use to load U-Boot from"
144 depends on SPL_USB_STORAGE
147 Partition on the USB storage device to load U-Boot from.
153 config USB_KEYBOARD_FN_KEYS
154 bool "USB keyboard function key support"
156 Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE,
157 END, PAGE UP, and PAGE DOWN.
160 prompt "USB keyboard polling"
161 default SYS_USB_EVENT_POLL_VIA_INT_QUEUE if ARCH_SUNXI
162 default SYS_USB_EVENT_POLL
164 Enable a polling mechanism for USB keyboard.
166 config SYS_USB_EVENT_POLL
167 bool "Interrupt polling"
169 config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
170 bool "Poll via interrupt queue"
172 config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
173 bool "Poll via control EP"
179 source "drivers/usb/eth/Kconfig"
183 source "drivers/usb/gadget/Kconfig"