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"Das U-Boot" Source Tree
1menuconfig USB
2 bool "USB support"
3 select BLK
4 ---help---
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.
10
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.
16
17 Say Y here if your device has an USB port, either host, peripheral or
18 dual-role.
19
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.
26
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.
29
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>.
34
35if USB
36
37config DM_USB
38 bool
39 depends on DM && OF_CONTROL
40 help
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
44 as normal.
45
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.
50
51config SPL_DM_USB
52 bool "Enable driver model for USB host mode in SPL"
53 depends on SPL_DM && DM_USB
54 default n if ARCH_MVEBU
55 default y
56
57config DM_USB_GADGET
58 bool "Enable driver model for USB Gadget"
59 depends on DM_USB
60 help
61 Enable driver model for USB Gadget (Peripheral
62 mode)
63
64config SPL_DM_USB_GADGET
65 bool "Enable driver model for USB Gadget in SPL"
66 depends on SPL_DM_USB
67 help
68 Enable driver model for USB Gadget in SPL
69 (Peripheral mode)
70
71source "drivers/usb/host/Kconfig"
72
73source "drivers/usb/isp1760/Kconfig"
74
75source "drivers/usb/cdns3/Kconfig"
76
77source "drivers/usb/dwc3/Kconfig"
78
79source "drivers/usb/mtu3/Kconfig"
80
81source "drivers/usb/musb/Kconfig"
82
83source "drivers/usb/musb-new/Kconfig"
84
85source "drivers/usb/emul/Kconfig"
86
87source "drivers/usb/phy/Kconfig"
88
89source "drivers/usb/tcpm/Kconfig"
90
91source "drivers/usb/ulpi/Kconfig"
92
93if USB_HOST
94
95comment "USB peripherals"
96
97config USB_STORAGE
98 bool "USB Mass Storage support"
99 ---help---
100 Say Y here if you want to connect USB mass storage devices to your
101 board's USB port.
102
103config USB_KEYBOARD
104 bool "USB Keyboard support"
105 depends on DM_USB
106 select DM_KEYBOARD
107 select SYS_STDIO_DEREGISTER
108 ---help---
109 Say Y here if you want to use a USB keyboard for U-Boot command line
110 input.
111
112config USB_ONBOARD_HUB
113 bool "Onboard USB hub support"
114 depends on DM_USB
115 ---help---
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
120 USB2514B.
121
122config USB_HUB_DEBOUNCE_TIMEOUT
123 int "Timeout in milliseconds for USB HUB connection"
124 default 1000
125 help
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.
132
133if SPL_USB_HOST
134
135comment "USB peripherals in SPL"
136
137config SPL_USB_STORAGE
138 bool "Support loading from USB"
139 help
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
144 device.
145
146config SYS_USB_FAT_BOOT_PARTITION
147 int "Partition on USB to use to load U-Boot from"
148 depends on SPL_USB_STORAGE
149 default 1
150 help
151 Partition on the USB storage device to load U-Boot from.
152
153endif
154
155if USB_KEYBOARD
156
157config USB_KEYBOARD_FN_KEYS
158 bool "USB keyboard function key support"
159 help
160 Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE,
161 END, PAGE UP, and PAGE DOWN.
162
163choice
164 prompt "USB keyboard polling"
165 default SYS_USB_EVENT_POLL_VIA_INT_QUEUE if ARCH_SUNXI
166 default SYS_USB_EVENT_POLL
167 ---help---
168 Enable a polling mechanism for USB keyboard.
169
170config SYS_USB_EVENT_POLL
171 bool "Interrupt polling"
172
173config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
174 bool "Poll via interrupt queue"
175
176config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
177 bool "Poll via control EP"
178
179endchoice
180
181endif
182
183source "drivers/usb/eth/Kconfig"
184
185endif
186
187source "drivers/usb/gadget/Kconfig"
188
189endif