usb: add basic USB configs in Kconfig
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Marek Vasut <marex@denx.de>
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Masahiro Yamada
parent
f440bf2507
commit
6e7e9294d3
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config USB_ARCH_HAS_HCD
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def_bool y
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config USB
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bool "Support for Host-side USB"
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depends on USB_ARCH_HAS_HCD
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---help---
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Universal Serial Bus (USB) is a specification for a serial bus
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subsystem which offers higher speeds and more features than the
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traditional PC serial port. The bus supplies power to peripherals
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and allows for hot swapping. Up to 127 USB peripherals can be
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connected to a single USB host in a tree structure.
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The USB host is the root of the tree, the peripherals are the
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leaves and the inner nodes are special USB devices called hubs.
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Most PCs now have USB host ports, used to connect peripherals
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such as scanners, keyboards, mice, modems, cameras, disks,
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flash memory, network links, and printers to the PC.
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Say Y here if your computer has a host-side USB port and you want
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to use USB devices. You then need to say Y to at least one of the
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Host Controller Driver (HCD) options below. Choose a USB 1.1
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controller, such as "UHCI HCD support" or "OHCI HCD support",
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and "EHCI HCD (USB 2.0) support" except for older systems that
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do not have USB 2.0 support. It doesn't normally hurt to select
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them all if you are not certain.
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If your system has a device-side USB port, used in the peripheral
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side of the USB protocol, see the "USB Gadget" framework instead.
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After choosing your HCD, then select drivers for the USB peripherals
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you'll be using. You may want to check out the information provided
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in <file:Documentation/usb/> and especially the links given in
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<file:Documentation/usb/usb-help.txt>.
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if USB
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source "drivers/usb/host/Kconfig"
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config USB_STORAGE
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bool "USB Mass Storage support"
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---help---
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Say Y here if you want to connect USB mass storage devices to your
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board's USB port.
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endif
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#
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# USB Host Controller Drivers
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#
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comment "USB Host Controller Drivers"
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config USB_XHCI_HCD
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bool "xHCI HCD (USB 3.0) support"
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---help---
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The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
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"SuperSpeed" host controller hardware.
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config USB_XHCI
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bool
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default USB_XHCI_HCD
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---help---
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TODO: rename after most boards switch to Kconfig
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if USB_XHCI_HCD
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endif
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config USB_EHCI_HCD
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bool "EHCI HCD (USB 2.0) support"
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---help---
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The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
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"high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
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If your USB host controller supports USB 2.0, you will likely want to
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configure this Host Controller Driver.
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EHCI controllers are packaged with "companion" host controllers (OHCI
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or UHCI) to handle USB 1.1 devices connected to root hub ports. Ports
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will connect to EHCI if the device is high speed, otherwise they
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connect to a companion controller. If you configure EHCI, you should
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probably configure the OHCI (for NEC and some other vendors) USB Host
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Controller Driver or UHCI (for Via motherboards) Host Controller
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Driver too.
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You may want to read <file:Documentation/usb/ehci.txt>.
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config USB_EHCI
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bool
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default USB_EHCI_HCD
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---help---
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TODO: rename after most boards switch to Kconfig
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if USB_EHCI_HCD
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endif
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