[maemo-developers] USB 2.0 Re: [maemo-developers] speeding up MMC (with success)

From: Koen Kooi koen at dominion.kabel.utwente.nl
Date: Mon Oct 2 10:57:50 EEST 2006
Hash: SHA1

Koen Kooi schreef:
> Frantisek Dufka schreef:
>> Koen Kooi wrote:
>>> Frantisek Dufka schreef:
>>>> Yet when usb cable is
>>>> inserted kernel says something about full speed config. Unfortunately
>>>> full speed is 12Mbps USB 1.1 speed. USB 2.0 is called high speed.
>>> usb 2.0 high speed = 12Mbps
>>> usb 2.0 full speed = 480MBps
>>> welcome to usb marketing speak :(
>> Are you sure? I haven't come across this meaning yet.
>> http://www.everythingusb.com/usb2/faq.htm
>> http://www.linux-usb.org/usb2.html
>> But anyway in kernel full speed realy means 12Mbps. Looks like
>> g_file_storage can handle USB 2.0 (CONFIG_USB_GADGET_DUALSPEED) but it
>> is not enabled.
>> It looks like the host mode is only 1.1 (there is only ohci-omap, not
>> ehci) but can at least the client/OTG mode do USB 2.0? Or is 'USB 2.0
>> device mode for PC connectivity' here http://europe.nokia.com/A4145105 a
>> mistake?
> You can retroactively label usb 1.1 devices '2.0' and the pxa270 can only do 12Mbit
> regardless of what intel's marketing department labels it.

And by the looks of it the omap1710 as well :(
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