On Wed, Mar 12, 2014 at 6:21 AM, Peter Stuge <peter@xxxxxxxx> wrote: > David Mosberger wrote: >> I couldn't figure out how to force UHCI onto an EHCI chip > > I suggested removing the ehci_hcd driver. Did that work? Nope. UHCI was loaded but it didn't recognize any UHCI-compatible chips so I was left without any USB devices (not even keyboard). >> but I did find I had some old IOGEAR USB 1.1 "extenders" (USB-over-CAT5 >> cable) and with those, the device does switch into full-speed mode on my >> computer: > > It might not be comparable. I just need proof that the devices can be operated properly with full-speed transactions only. As long as it does that, I should be fine. --david >> [ 886.371122] usb 1-1.3.1.1.4.2: USB disconnect, device number 15 >> [ 950.960459] usb 1-1.2: new full-speed USB device number 16 using ehci-pci > > Looks like it's still using the ehci driver. > > > You could use an FX2 data logger like the Logic or any of the 15 USD > boards off eBay (the Logic does nothing more than they do) together > with http://sigrok.org/ and the libsigrokdecode USB protocol decoder > for protocol analysis. > > It's obviously not a Beagle 480 but could be more than sufficient for > full speed. > > > //Peter -- eGauge Systems LLC, http://egauge.net/, 1.877-EGAUGE1, fax 720.545.9768 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
