Re: PXA27x UDC Power
Justin Clacherty <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Alan Stern wrote: > You don't have to worry about this. Set up only one configuration, > with the 500 mA current requirement. If the bus can't supply that much > power then the host will leave your gadget unconfigured, that is, it > will never send a Set-Config request. > I was wondering what the host did in those situations. Thanks. > The USB spec requires that all devices must draw no more than 100 mA > while in an unconfigured state (more precisely, the DEFAULT or ADDRESS > states). > Yes, I was aware of this. I was intending to run at 100 mA and then bump it up to 500 mA when vdraw_bus is called. Justin. ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel