My Gta02s wont charge

Andy Green andy at
Sun Jun 22 20:09:15 CEST 2008

Hash: SHA1

Somebody in the thread at some point said:
| Am Do  19. Juni 2008 schrieb Werner Almesberger:
|> Sean McNeil wrote:
|>> You do not need a battery to run the phone. It will run off USB power.
|> Some do, some don't. E.g., I never got any GTA02 (out of 1-2 samples)
|> to run from USB power for more than a few seconds.
|> Regarding charging, the big issue seems to be that we turn off the
|> charger if we don't have USB power. The PMU remembers that setting
|> while it has any power at all. Thus, if the battery is empty and the
|> charger happens to be turned off, USB power is simply ignored.
| I think battery charging *never* may be turned off. There is no valid
| to do this. Set max bat-voltage correctly and let PCF50633 handle the
end of
| charging.
| Instead reset max USB-current to 100mA and *enable* charging on every
| (u-boot, power-interrupts, just *every* occasion) if there's not
| detected or 500mA negotiated actually.

"It was decided" that we want to power on if we are off and there is
live USB power arriving (== "insertion").  This is to solve the charging
indication while off issue, we just make ourselves "on" all the way into
X.  This will also solve the "no charging when PMU left on its own if
charger off was the last order" issue as a side effect.

What is meant to happen if you have USB power and you tell the device to
shutdown -h now I dunno.

- -Andy
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