u-boot/drivers/usb/host/Kconfig

#
# USB Host Controller Drivers
#
comment "USB Host Controller Drivers"

config USB_XHCI_HCD
	bool "xHCI HCD (USB 3.0) support"
	---help---
	  The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
	  "SuperSpeed" host controller hardware.

config USB_XHCI
	bool
	default USB_XHCI_HCD
	---help---
	  TODO: rename after most boards switch to Kconfig

if USB_XHCI_HCD

config USB_XHCI_UNIPHIER
	bool "Support for Panasonic UniPhier on-chip xHCI USB controller"
	depends on ARCH_UNIPHIER
	default y
	---help---
	  Enables support for the on-chip xHCI controller on Panasonic
	  UniPhier SoCs.

endif

config USB_EHCI_HCD
	bool "EHCI HCD (USB 2.0) support"
	---help---
	  The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
	  "high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
	  If your USB host controller supports USB 2.0, you will likely want to
	  configure this Host Controller Driver.

	  EHCI controllers are packaged with "companion" host controllers (OHCI
	  or UHCI) to handle USB 1.1 devices connected to root hub ports.  Ports
	  will connect to EHCI if the device is high speed, otherwise they
	  connect to a companion controller.  If you configure EHCI, you should
	  probably configure the OHCI (for NEC and some other vendors) USB Host
	  Controller Driver or UHCI (for Via motherboards) Host Controller
	  Driver too.

	  You may want to read <file:Documentation/usb/ehci.txt>.

config USB_EHCI
	bool
	default USB_EHCI_HCD
	---help---
	  TODO: rename after most boards switch to Kconfig

if USB_EHCI_HCD

config USB_EHCI_UNIPHIER
	bool "Support for Panasonic UniPhier on-chip EHCI USB controller"
	depends on ARCH_UNIPHIER && OF_CONTROL
	default y
	---help---
	  Enables support for the on-chip EHCI controller on Panasonic
	  UniPhier SoCs.

endif