## USB Host Controller Drivers#comment "USB Host Controller Drivers"	depends on USBconfig USB_EHCI_HCD	tristate "EHCI HCD (USB 2.0) support"	depends on USB && USB_ARCH_HAS_EHCI	---help---	  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.  At the time of this writing, 	  the primary implementation of EHCI is a chip from NEC, widely available	  in add-on PCI cards, but implementations are in the works from other 	  vendors including Intel and Philips.  Motherboard support is appearing.	  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 <file:Documentation/usb/ehci.txt>.	  To compile this driver as a module, choose M here: the	  module will be called ehci-hcd.config USB_EHCI_SPLIT_ISO	bool "Full speed ISO transactions (EXPERIMENTAL)"	depends on USB_EHCI_HCD && EXPERIMENTAL	default n	---help---	  This code is new and hasn't been used with many different	  EHCI or USB 2.0 transaction translator implementations.	  It should work for ISO-OUT transfers, like audio.config USB_EHCI_ROOT_HUB_TT	bool "Root Hub Transaction Translators (EXPERIMENTAL)"	depends on USB_EHCI_HCD && EXPERIMENTAL	---help---	  Some EHCI chips have vendor-specific extensions to integrate	  transaction translators, so that no OHCI or UHCI companion	  controller is needed.  It's safe to say "y" even if your	  controller doesn't support this feature.	  This supports the EHCI implementation that's originally	  from ARC, and has since changed hands a few times.config USB_EHCI_TT_NEWSCHED	bool "Improved Transaction Translator scheduling (EXPERIMENTAL)"	depends on USB_EHCI_HCD && EXPERIMENTAL	---help---	  This changes the periodic scheduling code to fill more of the low	  and full speed bandwidth available from the Transaction Translator	  (TT) in USB 2.0 hubs.  Without this, only one transfer will be	  issued in each microframe, significantly reducing the number of	  periodic low/fullspeed transfers possible.	  If you have multiple periodic low/fullspeed devices connected to a	  highspeed USB hub which is connected to a highspeed USB Host	  Controller, and some of those devices will not work correctly	  (possibly due to "ENOSPC" or "-28" errors), say Y.	  If unsure, say N.config USB_EHCI_BIG_ENDIAN_MMIO	bool	depends on USB_EHCI_HCD	default nconfig USB_ISP116X_HCD	tristate "ISP116X HCD support"	depends on USB	---help---	  The ISP1160 and ISP1161 chips are USB host controllers. Enable this	  option if your board has this chip. If unsure, say N.	  This driver does not support isochronous transfers.	  To compile this driver as a module, choose M here: the	  module will be called isp116x-hcd.config USB_OHCI_HCD	tristate "OHCI HCD support"	depends on USB && USB_ARCH_HAS_OHCI	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3	select I2C if ARCH_PNX4008	---help---	  The Open Host Controller Interface (OHCI) is a standard for accessing	  USB 1.1 host controller hardware.  It does more in hardware than Intel's	  UHCI specification.  If your USB host controller follows the OHCI spec,	  say Y.  On most non-x86 systems, and on x86 hardware that's not using a	  USB controller from Intel or VIA, this is appropriate.  If your host	  controller doesn't use PCI, this is probably appropriate.  For a PCI	  based system where you're not sure, the "lspci -v" entry will list the	  right "prog-if" for your USB controller(s):  EHCI, OHCI, or UHCI.	  To compile this driver as a module, choose M here: the	  module will be called ohci-hcd.config USB_OHCI_HCD_PPC_SOC	bool "OHCI support for on-chip PPC USB controller"	depends on USB_OHCI_HCD && (STB03xxx || PPC_MPC52xx)	default y	select USB_OHCI_BIG_ENDIAN_DESC	select USB_OHCI_BIG_ENDIAN_MMIO	---help---	  Enables support for the USB controller on the MPC52xx or	  STB03xxx processor chip.  If unsure, say Y.config USB_OHCI_HCD_PPC_OF	bool "OHCI support for PPC USB controller on OF platform bus"	depends on USB_OHCI_HCD && PPC_OF	default y	---help---	  Enables support for the USB controller PowerPC present on the	  OpenFirmware platform bus.config USB_OHCI_HCD_PPC_OF_BE	bool "Support big endian HC"	depends on USB_OHCI_HCD_PPC_OF	default y	select USB_OHCI_BIG_ENDIAN_DESC	select USB_OHCI_BIG_ENDIAN_MMIOconfig USB_OHCI_HCD_PPC_OF_LE	bool "Support little endian HC"	depends on USB_OHCI_HCD_PPC_OF	default n	select USB_OHCI_LITTLE_ENDIANconfig USB_OHCI_HCD_PCI	bool "OHCI support for PCI-bus USB controllers"	depends on USB_OHCI_HCD && PCI && (STB03xxx || PPC_MPC52xx || USB_OHCI_HCD_PPC_OF)	default y	select USB_OHCI_LITTLE_ENDIAN	---help---	  Enables support for PCI-bus plug-in USB controller cards.	  If unsure, say Y.config USB_OHCI_BIG_ENDIAN_DESC	bool	depends on USB_OHCI_HCD	default nconfig USB_OHCI_BIG_ENDIAN_MMIO	bool	depends on USB_OHCI_HCD	default nconfig USB_OHCI_LITTLE_ENDIAN	bool	depends on USB_OHCI_HCD	default n if STB03xxx || PPC_MPC52xx	default yconfig USB_UHCI_HCD	tristate "UHCI HCD (most Intel and VIA) support"	depends on USB && PCI	---help---	  The Universal Host Controller Interface is a standard by Intel for	  accessing the USB hardware in the PC (which is also called the USB	  host controller). If your USB host controller conforms to this	  standard, you may want to say Y, but see below. All recent boards	  with Intel PCI chipsets (like intel 430TX, 440FX, 440LX, 440BX,	  i810, i820) conform to this standard. Also all VIA PCI chipsets	  (like VIA VP2, VP3, MVP3, Apollo Pro, Apollo Pro II or Apollo Pro	  133). If unsure, say Y.	  To compile this driver as a module, choose M here: the	  module will be called uhci-hcd.config USB_U132_HCD	tristate "Elan U132 Adapter Host Controller"	depends on USB && USB_FTDI_ELAN	default M	help	  The U132 adapter is a USB to CardBus adapter specifically designed	  for PC cards that contain an OHCI host controller. Typical PC cards	  are the Orange Mobile 3G Option GlobeTrotter Fusion card. The U132	  adapter will *NOT* work with PC cards that do not contain an OHCI	  controller.	  For those PC cards that contain multiple OHCI controllers only the	  first one is used.	  The driver consists of two modules, the "ftdi-elan" module is a	  USB client driver that interfaces to the FTDI chip within ELAN's	  USB-to-PCMCIA adapter, and this "u132-hcd" module is a USB host	  controller driver that talks to the OHCI controller within the	  CardBus cards that are inserted in the U132 adapter.	  This driver has been tested with a CardBus OHCI USB adapter, and	  worked with a USB PEN Drive inserted into the first USB port of	  the PCCARD. A rather pointless thing to do, but useful for testing.	  It is safe to say M here.	  See also <http://www.elandigitalsystems.com/support/ufaq/u132linux.php>config USB_SL811_HCD	tristate "SL811HS HCD support"	depends on USB	help	  The SL811HS is a single-port USB controller that supports either	  host side or peripheral side roles.  Enable this option if your	  board has this chip, and you want to use it as a host controller. 	  If unsure, say N.	  To compile this driver as a module, choose M here: the	  module will be called sl811-hcd.config USB_OTG_HOST	tristate "USB OTG Host support"	depends on USB	help	  S3C6400 OTG Host.config USB_SL811_CS	tristate "CF/PCMCIA support for SL811HS HCD"	depends on USB_SL811_HCD && PCMCIA	help	  Wraps a PCMCIA driver around the SL811HS HCD, supporting the RATOC	  REX-CFU1U CF card (often used with PDAs).  If unsure, say N.	  To compile this driver as a module, choose M here: the	  module will be called "sl811_cs".