u-boot/drivers/usb/Kconfig

menuconfig USB
	bool "USB support"
	---help---
	  Universal Serial Bus (USB) is a specification for a serial bus
	  subsystem which offers higher speeds and more features than the
	  traditional PC serial port.  The bus supplies power to peripherals
	  and allows for hot swapping.  Up to 127 USB peripherals can be
	  connected to a single USB host in a tree structure.

	  The USB host is the root of the tree, the peripherals are the
	  leaves and the inner nodes are special USB devices called hubs.
	  Most PCs now have USB host ports, used to connect peripherals
	  such as scanners, keyboards, mice, modems, cameras, disks,
	  flash memory, network links, and printers to the PC.

	  Say Y here if your device has an USB port, either host, peripheral or
	  dual-role.

	  For an USB host port, you then need to say Y to at least one of the
	  Host Controller Driver (HCD) options below.  Choose a USB 1.1
	  controller, such as "UHCI HCD support" or "OHCI HCD support",
	  and "EHCI HCD (USB 2.0) support" except for older systems that
	  do not have USB 2.0 support.  It doesn't normally hurt to select
	  them all if you are not certain.

	  If your system has a device-side USB port, used in the peripheral
	  side of the USB protocol, see the "USB Gadget" framework instead.

	  After choosing your HCD, then select drivers for the USB peripherals
	  you'll be using.  You may want to check out the information provided
	  in <file:Documentation/usb/> and especially the links given in
	  <file:Documentation/usb/usb-help.txt>.

if USB

config DM_USB
	bool
	depends on DM && OF_CONTROL
	help
	  Enable driver model for USB. The USB interface is then implemented
	  by the USB uclass. Multiple USB controllers of different types
	  (XHCI, EHCI, OHCI) can be attached and used. The 'usb' command works
	  as normal.

	  Much of the code is shared but with this option enabled the USB
	  uclass takes care of device enumeration. USB devices can be
	  declared with the U_BOOT_USB_DEVICE() macro and will be
	  automatically probed when found on the bus.

config SPL_DM_USB
	bool "Enable driver model for USB host mode in SPL"
	depends on SPL_DM && DM_USB
	default n if ARCH_MVEBU
	default y

config DM_USB_GADGET
	bool "Enable driver model for USB Gadget"
	depends on DM_USB
	help
	  Enable driver model for USB Gadget (Peripheral
	  mode)

config SPL_DM_USB_GADGET
	bool "Enable driver model for USB Gadget in SPL"
	depends on SPL_DM_USB
	help
	  Enable driver model for USB Gadget in SPL
	  (Peripheral mode)

source "drivers/usb/host/Kconfig"

source "drivers/usb/isp1760/Kconfig"

source "drivers/usb/cdns3/Kconfig"

source "drivers/usb/dwc3/Kconfig"

source "drivers/usb/mtu3/Kconfig"

source "drivers/usb/musb/Kconfig"

source "drivers/usb/musb-new/Kconfig"

source "drivers/usb/emul/Kconfig"

source "drivers/usb/phy/Kconfig"

source "drivers/usb/ulpi/Kconfig"

if USB_HOST

comment "USB peripherals"

config USB_STORAGE
	bool "USB Mass Storage support"
	---help---
	  Say Y here if you want to connect USB mass storage devices to your
	  board's USB port.

config USB_KEYBOARD
	bool "USB Keyboard support"
	select DM_KEYBOARD if DM_USB
	select SYS_STDIO_DEREGISTER
	---help---
	  Say Y here if you want to use a USB keyboard for U-Boot command line
	  input.

config USB_ONBOARD_HUB
	bool "Onboard USB hub support"
	depends on DM_USB
	---help---
	  Say Y here if you want to support discrete onboard USB hubs that
	  don't require an additional control bus for initialization, but
	  need some non-trivial form of initialization, such as enabling a
	  power regulator. An example for such a hub is the Microchip
	  USB2514B.

config USB_HUB_DEBOUNCE_TIMEOUT
	int "Timeout in milliseconds for USB HUB connection"
	default 1000
	help
	  Value in milliseconds of the USB connection timeout, the max delay to
	  wait the hub port status to be connected steadily after being powered
	  off and powered on in the usb hub driver.
	  This define allows to increase the HUB_DEBOUNCE_TIMEOUT default
	  value = 1s because some usb device needs around 1.5s to be initialized
	  and a 2s value should solve detection issue on problematic USB keys.

if SPL_USB_HOST

comment "USB peripherals in SPL"

config SPL_USB_STORAGE
	bool "Support loading from USB"
	help
	  Enable support for USB devices in SPL. This allows use of USB
	  devices such as hard drives and flash drivers for loading U-Boot.
	  The actual drivers are enabled separately using the normal U-Boot
	  config options. This enables loading from USB using a configured
	  device.

config SYS_USB_FAT_BOOT_PARTITION
	int "Partition on USB to use to load U-Boot from"
	depends on SPL_USB_STORAGE
	default 1
	help
	  Partition on the USB storage device to load U-Boot from.

endif

if USB_KEYBOARD

config USB_KEYBOARD_FN_KEYS
	bool "USB keyboard function key support"
	help
	  Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE,
	  END, PAGE UP, and PAGE DOWN.

choice
	prompt "USB keyboard polling"
	default SYS_USB_EVENT_POLL_VIA_INT_QUEUE if ARCH_SUNXI
	default SYS_USB_EVENT_POLL
	---help---
	  Enable a polling mechanism for USB keyboard.

config SYS_USB_EVENT_POLL
    bool "Interrupt polling"

config SYS_USB_EVENT_POLL_VIA_INT_QUEUE
    bool "Poll via interrupt queue"

config SYS_USB_EVENT_POLL_VIA_CONTROL_EP
    bool "Poll via control EP"

endchoice

endif

source "drivers/usb/eth/Kconfig"

endif

source "drivers/usb/gadget/Kconfig"

endif