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ipod usb charging: Rockbox vs AppleOS

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ryran:
I'd especially love to get some official (heh) info from any devs on status of usb power capabilities of Rockbox for the ipod, as someone (Paul?) mentioned recently that it doesn't draw as much power as the default firmware... however, as far as I can see there's nothing anywhere in the wiki (or the forums) about it.

Yotto:
Don't know about the wiki, but I know that it's been mentioned in the forums.  And it's a fact that everybody knows about.  Rockbox only uses half the whatsit thingy to charge, so charges half as fast.  In fact, with the backlight on constantly on my Rockbox, it drains faster than it charges.

lini:
already pointed out in a different thread


--- Quote from: Llorean on July 27, 2006, 07:48:20 AM ---I personally have explained it more than once.
To summarize: In Rockbox, the iPod only draws 100mah. In the iPod firmware it draws the full 500 that USB carries. We can't fix this yet. So, if your Rockbox is actually using a lot of power, it may even slowly decrease while chargin in Rockbox.

--- End quote ---

ryran:
Yes. I know it's been said.
It's NOT something that I think everyone knows about though. As far as I can tell, it's not mentioned anywhere in the documention. My point is to get some insight into how big of an issue it is for the developers. That was just Llorean talking--I want to see if anyone has actually looked at the issue and has any ideas/plans/hope for a future resolution.

Llorean:
As far as I'm aware, the USB controller is completely undocumented as it's part of the whole PortalPlayer thing, so until someone figures out how to deal with it, there's not much hope of improvement.

My personal guess is that we'll see better charging somewhere shortly before, or shortly after, we learn what's necessary to start working on our own USB mode, because either one requires investigation into how the USB properly works.

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