USB2 device won't attach to ehci

M. Warner Losh imp at bsdimp.com
Sun Jul 22 22:25:29 UTC 2007


In message: <46A3D3CB.5070400 at zen.mooo.com>
            Raaf <raaf at zen.mooo.com> writes:
: Peter Jeremy:
: > I have an Olympus FE-210 camera that is supposed to be a USB2
: > device but only attaches as USB1 in either umass or MTP mode.
: > Can anyone suggest the reason for this or how to correct it?
: 
: 
: Looking at the specifications page of the Olympus FE-210 i see
: USB 2.0 compatible Yes.
: 
: http://www.olympus.co.uk/consumer/29_FE-210_Specifications.htm
: 
: That usually means that it's really a USB1.x device, but marketing
: department decided that selling it as a USB 2.0 compatible device
: would probably be better for sales :-)

Does it say 'Full speed' or 'High Speed'?  'Full Speed' is usb 2.0
compatible, but it is still only 12Mbps rather than the 480Mbps of
'High Speed'.

Warner


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