[Kenrel] CONFIG_USB_EHCI_HCD

Kenrel   - CONFIG_USB_EHCI_HCD

General informations

The Linux kernel configuration item CONFIG_USB_EHCI_HCD:

* prompt: EHCI HCD (USB 2.0) support
* type: tristate
* depends on: (none)
* defined in drivers/usb/host/Kconfig
* found in Linux kernels: 2.6.0–2.6.39, 3.0–3.16, 3.17-rc+HEAD
* modules built: ehci-hcd
* Help text
 - 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 Documentation/usb/ehci.txt.

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