|  | 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 "Enable driver model for USB" | 
|  | depends on USB && DM | 
|  | help | 
|  | Enable driver model for USB. The USB interface is then implemented | 
|  | by the USB uclass. Multiple USB controllers of different types | 
|  | (XHCI, EHCI) can be attached and used. The 'usb' command works as | 
|  | normal. OCHI is not supported at present. | 
|  |  | 
|  | 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 AML_USB | 
|  | bool "the CONFIG_AML_USB is used to mark our own modifications" | 
|  | depends on USB | 
|  | ---help--- | 
|  | Say Y here if you want to use usb. | 
|  |  | 
|  |  | 
|  | source "drivers/usb/host/Kconfig" | 
|  |  | 
|  | source "drivers/usb/dwc3/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" | 
|  |  | 
|  | 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 SYS_STDIO_DEREGISTER | 
|  | ---help--- | 
|  | Say Y here if you want to use a USB keyboard for U-Boot command line | 
|  | input. | 
|  |  | 
|  | if USB_KEYBOARD | 
|  |  | 
|  | choice | 
|  | prompt "USB keyboard polling" | 
|  | 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/gadget/Kconfig" | 
|  | source "drivers/usb/gadget/v2_burning/Kconfig" | 
|  |  | 
|  | source "drivers/usb/eth/Kconfig" | 
|  |  | 
|  | endif |