5 Universal Serial Bus (USB) is a specification for a serial bus
6 subsystem which offers higher speeds and more features than the
7 traditional PC serial port. The bus supplies power to peripherals
8 and allows for hot swapping. Up to 127 USB peripherals can be
9 connected to a single USB host in a tree structure.
11 The USB host is the root of the tree, the peripherals are the
12 leaves and the inner nodes are special USB devices called hubs.
13 Most PCs now have USB host ports, used to connect peripherals
14 such as scanners, keyboards, mice, modems, cameras, disks,
15 flash memory, network links, and printers to the PC.
17 Say Y here if your device has an USB port, either host, peripheral or
20 For an USB host port, you then need to say Y to at least one of the
21 Host Controller Driver (HCD) options below. Choose a USB 1.1
22 controller, such as "UHCI HCD support" or "OHCI HCD support",
23 and "EHCI HCD (USB 2.0) support" except for older systems that
24 do not have USB 2.0 support. It doesn't normally hurt to select
25 them all if you are not certain.
27 If your system has a device-side USB port, used in the peripheral
28 side of the USB protocol, see the "USB Gadget" framework instead.
30 After choosing your HCD, then select drivers for the USB peripherals
31 you'll be using. You may want to check out the information provided
32 in <file:Documentation/usb/> and especially the links given in
33 <file:Documentation/usb/usb-help.txt>.
39 depends on DM && OF_CONTROL
41 Enable driver model for USB. The USB interface is then implemented
42 by the USB uclass. Multiple USB controllers of different types
43 (XHCI, EHCI, OHCI) can be attached and used. The 'usb' command works
46 Much of the code is shared but with this option enabled the USB
47 uclass takes care of device enumeration. USB devices can be
48 declared with the U_BOOT_USB_DEVICE() macro and will be
49 automatically probed when found on the bus.
52 bool "Enable driver model for USB host mode in SPL"
53 depends on SPL_DM && DM_USB
54 default n if ARCH_MVEBU
58 bool "Enable driver model for USB Gadget"
61 Enable driver model for USB Gadget (Peripheral
64 config SPL_DM_USB_GADGET
65 bool "Enable driver model for USB Gadget in SPL"
68 Enable driver model for USB Gadget in SPL
71 source "drivers/usb/host/Kconfig"
73 source "drivers/usb/isp1760/Kconfig"
75 source "drivers/usb/cdns3/Kconfig"
77 source "drivers/usb/dwc3/Kconfig"
79 source "drivers/usb/mtu3/Kconfig"
81 source "drivers/usb/musb/Kconfig"
83 source "drivers/usb/musb-new/Kconfig"
85 source "drivers/usb/emul/Kconfig"
87 source "drivers/usb/phy/Kconfig"
89 source "drivers/usb/tcpm/Kconfig"
91 source "drivers/usb/ulpi/Kconfig"
95 comment "USB peripherals"
98 bool "USB Mass Storage support"
100 Say Y here if you want to connect USB mass storage devices to your
104 bool "USB Keyboard support"
107 select SYS_STDIO_DEREGISTER
109 Say Y here if you want to use a USB keyboard for U-Boot command line
112 config USB_ONBOARD_HUB
113 bool "Onboard USB hub support"
116 Say Y here if you want to support discrete onboard USB hubs that
117 don't require an additional control bus for initialization, but
118 need some non-trivial form of initialization, such as enabling a
119 power regulator. An example for such a hub is the Microchip
122 config USB_HUB_DEBOUNCE_TIMEOUT
123 int "Timeout in milliseconds for USB HUB connection"
126 Value in milliseconds of the USB connection timeout, the max delay to
127 wait the hub port status to be connected steadily after being powered
128 off and powered on in the usb hub driver.
129 This define allows to increase the HUB_DEBOUNCE_TIMEOUT default
130 value = 1s because some usb device needs around 1.5s to be initialized
131 and a 2s value should solve detection issue on problematic USB keys.
135 comment "USB peripherals in SPL"
137 config SPL_USB_STORAGE
138 bool "Support loading from USB"
140 Enable support for USB devices in SPL. This allows use of USB
141 devices such as hard drives and flash drivers for loading U-Boot.
142 The actual drivers are enabled separately using the normal U-Boot
143 config options. This enables loading from USB using a configured
146 config SYS_USB_FAT_BOOT_PARTITION
147 int "Partition on USB to use to load U-Boot from"
148 depends on SPL_USB_STORAGE
151 Partition on the USB storage device to load U-Boot from.
157 config USB_KEYBOARD_FN_KEYS
158 bool "USB keyboard function key support"
160 Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE,
161 END, PAGE UP, and PAGE DOWN.
164 prompt "USB keyboard polling"
165 default SYS_USB_EVENT_POLL_VIA_INT_QUEUE if ARCH_SUNXI
166 default SYS_USB_EVENT_POLL
168 Enable a polling mechanism for USB keyboard.
170 config SYS_USB_EVENT_POLL
171 bool "Interrupt polling"
173 config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
174 bool "Poll via interrupt queue"
176 config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
177 bool "Poll via control EP"
183 source "drivers/usb/eth/Kconfig"
187 source "drivers/usb/gadget/Kconfig"