[maemo-developers] N900 usb host + power charge

From: quim.gil at nokia.com quim.gil at nokia.com
Date: Sun Sep 20 21:44:44 EEST 2009

> > > I plan to create a proposal for the push n900[1] and I plan to use the
> > > usb port. I have the following question.
> > > When the device is in usb-host mode it should of course provide power does
> > > it? Is it possible to charge the device while it's in usb-host mode?

The N900 comes without USB host mode. When I asked I was told that the limitation comes at hardware level.

The reason for this decision was the complexity of providing support for charging, PC connectivity and USB OTG efficiently through the same Micro USB port within the project deadlines. We needed to make choices and the decision was to sacrify USB OTG and concentrate on the essential use cases of charging and connecting to the PC, bringing the N900 to the market in its due time.

Quim Gil
open source advocate
Maemo Devices @ Nokia
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