Recommended USB 2.0 controller fr. 5.2+

Heinrich Rebehn rebehn at
Mon Apr 5 05:58:37 PDT 2004

Bernd Walter wrote:
> On Mon, Mar 22, 2004 at 02:09:01PM +0100, Peter Schuller wrote:
>>>So - if I want a USB 2 controller that works fine with FreeBSD, which one
>>>shojuld I get / which chipset should it be using?
>>To be more specific I found a controllre by Q-Tec (425U) wtih a Via VT6202 
>>chipset. Anyone know if this will work?
> NEC Controllers are known to work.
> Never tested any of the VIA ones.

i am using a NEC USB2 controller and am just about to give up on using 
it. I don't know if it's the controller, the disk or the ehci driver.
However, man ehci(4) states that "The driver is not finished and is 
quite buggy." This seems to be true. I get all sorts of trouble ranging 
from hangs during boot to system crashes.
I am reverting back to USB1 although its terribly slow.

FreeBSD 5.2.1-RELEASE-p3

usb4: EHCI version 1.0
usb4: companion controllers, 2 ports each: usb2 usb3
usb4: <NEC uPD 720100 USB 2.0 controller> on ehci0
usb4: USB revision 2.0
uhub4: NEC EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub4: 3 ports with 3 removable, self powered

umass0: Maxtor OneTouch, rev 2.00/2.00, addr 2
umass0: Get Max Lun not supported (STALLED)
GEOM: create disk da0 dp=0xc82ad450
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <Maxtor OneTouch 0200> Fixed Direct Access SCSI-0 device
da0: 1.000MB/s transfers
da0: 239371MB (490232832 512 byte sectors: 255H 63S/T 30515C)

Sorry i can't report anything posivtive on this.



Heinrich Rebehn

University of Bremen
Physics / Electrical and Electronics Engineering
- Department of Telecommunications -

Phone : +49/421/218-4664
Fax   :            -3341

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