1menuconfig USB 2 bool "USB support" 3 ---help--- 4 Universal Serial Bus (USB) is a specification for a serial bus 5 subsystem which offers higher speeds and more features than the 6 traditional PC serial port. The bus supplies power to peripherals 7 and allows for hot swapping. Up to 127 USB peripherals can be 8 connected to a single USB host in a tree structure. 9 10 The USB host is the root of the tree, the peripherals are the 11 leaves and the inner nodes are special USB devices called hubs. 12 Most PCs now have USB host ports, used to connect peripherals 13 such as scanners, keyboards, mice, modems, cameras, disks, 14 flash memory, network links, and printers to the PC. 15 16 Say Y here if your device has an USB port, either host, peripheral or 17 dual-role. 18 19 For an USB host port, you then need to say Y to at least one of the 20 Host Controller Driver (HCD) options below. Choose a USB 1.1 21 controller, such as "UHCI HCD support" or "OHCI HCD support", 22 and "EHCI HCD (USB 2.0) support" except for older systems that 23 do not have USB 2.0 support. It doesn't normally hurt to select 24 them all if you are not certain. 25 26 If your system has a device-side USB port, used in the peripheral 27 side of the USB protocol, see the "USB Gadget" framework instead. 28 29 After choosing your HCD, then select drivers for the USB peripherals 30 you'll be using. You may want to check out the information provided 31 in <file:Documentation/usb/> and especially the links given in 32 <file:Documentation/usb/usb-help.txt>. 33 34if USB 35 36config DM_USB 37 bool "Enable driver model for USB" 38 depends on USB && DM 39 help 40 Enable driver model for USB. The USB interface is then implemented 41 by the USB uclass. Multiple USB controllers of different types 42 (XHCI, EHCI) can be attached and used. The 'usb' command works as 43 normal. OCHI is not supported at present. 44 45 Much of the code is shared but with this option enabled the USB 46 uclass takes care of device enumeration. USB devices can be 47 declared with the U_BOOT_USB_DEVICE() macro and will be 48 automatically probed when found on the bus. 49 50config SPL_DM_USB 51 bool "Enable driver model for USB in SPL" 52 depends on SPL_DM && DM_USB 53 default y 54 55config DM_USB_GADGET 56 bool "Enable driver model for USB Gadget" 57 depends on DM_USB 58 help 59 Enable driver model for USB Gadget (Peripheral 60 mode) 61 62config SPL_DM_USB_GADGET 63 bool "Enable driver model for USB Gadget in sPL" 64 depends on SPL_DM_USB 65 help 66 Enable driver model for USB Gadget in SPL 67 (Peripheral mode) 68 69source "drivers/usb/host/Kconfig" 70 71source "drivers/usb/dwc3/Kconfig" 72 73source "drivers/usb/musb/Kconfig" 74 75source "drivers/usb/musb-new/Kconfig" 76 77source "drivers/usb/emul/Kconfig" 78 79source "drivers/usb/phy/Kconfig" 80 81source "drivers/usb/ulpi/Kconfig" 82 83comment "USB peripherals" 84 85config USB_STORAGE 86 bool "USB Mass Storage support" 87 depends on !(BLK && !DM_USB) 88 ---help--- 89 Say Y here if you want to connect USB mass storage devices to your 90 board's USB port. 91 92config USB_KEYBOARD 93 bool "USB Keyboard support" 94 select SYS_STDIO_DEREGISTER 95 ---help--- 96 Say Y here if you want to use a USB keyboard for U-Boot command line 97 input. 98 99if USB_KEYBOARD 100 101choice 102 prompt "USB keyboard polling" 103 default SYS_USB_EVENT_POLL 104 ---help--- 105 Enable a polling mechanism for USB keyboard. 106 107 config SYS_USB_EVENT_POLL 108 bool "Interrupt polling" 109 110 config SYS_USB_EVENT_POLL_VIA_INT_QUEUE 111 bool "Poll via interrupt queue" 112 113 config SYS_USB_EVENT_POLL_VIA_CONTROL_EP 114 bool "Poll via control EP" 115 116endchoice 117 118endif 119 120source "drivers/usb/gadget/Kconfig" 121 122source "drivers/usb/eth/Kconfig" 123 124endif 125