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 and especially the links given in . 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