> Most major Linux distributions will include USB 2.0 support in the > near future. Redhat and Mandrake both currently include limited USB > 2.0 support. Jason Ziller, chairman of the USB Implementers Forum, > said "I am excited about Hi-Speed USB 2.0 being included in the latest > Linux kernel. Linux users can now take advantage of significantly > faster Hi-Speed USB 2.0 devices. That support is now becoming widely > available in new PC and peripherals, and it is excellent to see > widespread operating system support."
Make that "PCs and peripherals" ... :) > The Linux USB project has already delivered excellent support for the most > common low-speed (1.5Mbps) and full-speed (12Mbps) devices, and the > logical progression is to High Speed (480Mbps) devices. The 2.4.19 > kernel supports most High Speed USB hard disks and CD-ROMs, the > Cypress EZUSB-FX2 chips, USB 2.0 hubs (using NEC hub controller chips) > and High Speed USB host controllers (supporting the EHCI > specification) from Intel, NEC, Philips, VIA and others. ... and not mention USB 2.0 hubs, given that the anti-oops patch won't be in the 2.4.19 kernel. (Though I think they'll behave fine until they're unplugged or the system shuts down.) Given that 2.5 is more functional, it might be worth mentioning something about the update process. Maybe "The latest development (2.5) kernel includes additional USB 2.0 updates, including better high speed hub support, and many of those fixes will be integrated into subsequent Linux kernel 2.4 releases." Oh, and it would be good to mention the NetChip 2270, so long as we're mentioning general purpose USB "gadget-side" hardware that's been of some help to the Linux-USB effort! :) > The Linux kernel typically achieves I/O rates of from 10-20 MBytes/sec > with the 2.4.19 kernel using readily available retail USB 2.0 hard > drives. These rates currently compare favorably with the speeds that > other operating systems achieve with the same High Speed host > controllers and USB disk drives. Future enhancements are expected to > produce substantial speed increases. These changes will be tested in > the Linux 2.5 kernel (which is the current development release), and > will ensure that the USB 2.0 support in the Linux 2.6 stable release > is both reliable and fast. And FYI, those future enhancements aren't quite started yet IMO. Groundwork is in place as HCD simplifications start to happen, but we still haven't made the usb-storage driver queue all its transfers. I count that as a "must have by feature freeze" issue. Basically looks good to me; thanks for doing this! - Dave > Key supporters of the Linux USB 2.0 activities include Adaptec, > Cypress, IOGEAR, Netchip Technologies, Orange Micro and VIA. > > > About the Linux USB project > The Linux USB project is developing USB support for the Linux 2.2, > Linux 2.4 and Linux 2.5 kernels. The Linux USB homepage is > http://www.linux-usb.org > > Supporters of Linux USB development include: 3Com, Adaptec, APC, CATC, > Compaq, Cypress, Datalux, IOGEAR, Iomega, Kodak, Netchip Technology, > Orange Micro, Sandisk, SuSE, VIA and Y-E Data. > > > Contact information > For further details, contact Brad Hards ([EMAIL PROTECTED]). > > > ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
