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CONFIG_USB: Support for Host-side USB

General informations

The Linux kernel configuration item CONFIG_USB has multiple definitions:

found in arch/cris/arch-v10/drivers/Kconfig

The configuration item CONFIG_USB:

Help text

(none)

Support for Host-side USB found in drivers/usb/Kconfig

The configuration item CONFIG_USB:

Help text

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 computer has a host-side USB port and you want to use USB devices. 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 Documentation/usb/ and especially the links given in Documentation/usb/usb-help.txt.

To compile this driver as a module, choose M here: the module will be called usbcore.

Support for USB found in drivers/usb/Kconfig

The configuration item CONFIG_USB:

Help text

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 port in a tree structure. The USB port is the root of the tree, the peripherals are the leaves and the inner nodes are special USB devices called hubs. Many newer PC's have USB ports and newer peripherals such as scanners, keyboards, mice, modems, and printers support the USB protocol and can be connected to the PC via those ports.

Say Y here if your computer has a USB port and you want to use USB devices. You then need to say Y to at least one of "UHCI HCD support" or "OHCI HCD support" below (the type of interface that the USB hardware in your computer provides to the operating system) and then choose from amongst the drivers for USB peripherals. You may want to check out the information provided in Documentation/usb/ and especially the links given in Documentation/usb/usb-help.txt.

If you have a new USB 2.0 High Speed system, you should also choose "EHCI HCD (USB 2.0) support" as well as at least one of UHCI or OHCI.

It doesn't normally hurt to select them all if you are not certain.

To compile this driver as a module, choose M here: the module will be called usbcore.

Hardware

PCI

Numeric ID (from LKDDb) and names (from pci.ids) of recognized devices:

USB

Numeric ID (from LKDDb) and names (from usb.ids) of recognized devices: