Suspend and resume bringup.

[Jim Gettys]

Eric,

We eco'ed a number of systems to get to people interested in working on
power management.  Unless you are really handy with a soldering iron,
swapping machines is a better way to go.  Let me know if you'd like us
to send a system.

We certainly should document the ECO's and get them in the wiki in any
case.  For some people, they aren't all that difficult to do.
                              - Jim


On Sat, 2007-03-24 at 21:42 -0400, Eric St-Jean wrote:
> (i'm terribly sorry for butting in, but i'm in the same situation -
> wanting to work on the power stuff that seems fairly important -)
> 
> Jim Gettys wrote:
> > On Sat, 2007-03-24 at 02:52 -0400, Albert Cahalan wrote:
> >   
> >> Chris Ball writes:
> >>     
> >>> There's still plenty of work to be done -- the kernel is coming back,
> >>> but not all of the devices (USB, MMC, DCON, camera) are yet.
> >>>       
> >> Most of us can't help even if we have the skills, desire, and time.
> >>
> >> Note that there is still no public documentation of the DCON.
> >> That's a rather important chip.
> >>     
> same problem here. I've been mostly hacking and getting up to speed on
> many different aspects, but lacking proper doc'n, am finding it
> difficult to focus. And i called in to the power mgt telecon, but had to
> catch a plane and had to disconnect after 20 minutes.
> > I'll see if I can dig up a current version early next week.
> >   
> that would be great!
> >> The camera is mostly undocumented, particularly the custom interface.
> >>     
> >
> > The CaFE specification is almost available; maybe the coming week.
> >   
> again!
> >> The MMC interface appears to be undocumented; there are suggestions
> >> that the protocol itself (not your interface) may be partially public.
> >>     
> >
> > The SD interface is really very close to the public SD association
> > specs.  There is one additional power savings tweak we'll have to do.
> >   
> >> With neither USB nor DCON, it looks like a serial port would be needed.
> >> I can't find the soldering instructions or part list.
> >>     
> >
> > We've eco'ed a limited number of systems to add back a serial connector
> > and fix the dcon pulldown.  How serious are you at really working on
> > power management?
> >   
> afaic, i wouldn't mind doing the mod myself - it sounds like it's an
> unpopulated header, and my soldering skills - even smt - should be ok
> for it, but there's no doc'n on it, and the schems are private.
> i'll readily admit that i have less than 20hr/wk to give, but i'll also
> admit i haven't been super productive on the hours i did give so far.
> 
-- 
Jim Gettys
One Laptop Per Child