Lines Matching refs:USB
6 The usbfs filesystem for USB devices is traditionally mounted at
11 USB device nodes are created under /dev/usb/ or someplace similar. The
28 USB device information, and user mode drivers can use usbfs
29 to interact with USB devices.
40 "USB Device Filesystem" section of the USB Guide. The latest copy
41 of the USB Guide can be found at http://www.linux-usb.org/
46 Each connected USB device has one file. The BBB indicates the bus
52 or USB cable), so a device might be 002/027 when you first connect
65 These files may also be used to write user-level drivers for the USB
70 control, bulk, or other kinds of USB transfers. The IOCTLs are
90 Lev, Prnt, Port, Cnt) can be used to build a USB topology diagram.
95 B = Bandwidth (applies only to USB host controllers, which are
129 1.5 Mbit/s for low speed USB
130 12 Mbit/s for full speed USB
131 480 Mbit/s for high speed USB (added for USB 2.0);
132 also used for Wireless USB, which has no fixed speed
133 5000 Mbit/s for SuperSpeed USB (added for USB 3.0)
153 those transfers. For a low or full speed bus (loosely, "USB 1.1"),
155 "USB 2.0") 80% is reserved.
170 | |__Device USB version
185 | For USB host controller drivers (virtual root hubs) this may
192 | For older USB host controller drivers (virtual root hubs) this
199 | For USB host controller drivers (virtual root hubs) this is
216 USB devices may have multiple configurations, each of which act
224 to a different USB device driver. One common example is a USB
271 With the Linux-USB stack, periodic bandwidth reservations use the
292 of the USB devices on a system's root hub. (See more below
299 (in milliamps) that a system's USB devices are using.
311 S: Product=USB UHCI Root Hub
335 S: Product=Peracom USB to Serial Converter