My Gta02s wont charge / chgena = 0 by default

Andy Green andy at
Mon Jun 23 20:53:00 CEST 2008

Hash: SHA1

Somebody in the thread at some point said:
| Andy Green wrote:
|> It's pretty strange that "disable charger" --> "don't even power the
|> device from USB"... does it explicitly say that anywhere
| Not really. But I didn't see it describe any alternative paths either.
|> or is that just what we are empirically seeing?
| That we do. I'm now seeing it more consistently. Perhaps I used too
| high a battery voltage in my earlier experiments, so I only hovered
| around Vth(sysok) = 3.1V (*), but didn't reach Vth(batok) = 2.8V.
| (*) Set by u-boot. NoPower defaults are different.
| Also, Sean McNeils experiment confirms these findings.

I don't doubt we're seeing it and it's a real problem, I just don't
really understand why yet.  It could be that chgena = 0 means no system
power but it seems a bit insane (especially as chgena is 0 from the
get-go as we now know).  It can be a bug in pcf I suppose, but it's
probably our fault somehow.

- -Andy
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