[PATCH] GTA02 power manager for bluetooth
matt_hsu at openmoko.org
Sat Jan 19 07:39:31 CET 2008
於 五，2008-01-18 於 10:44 +0000，Andy Green 提到：
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> Matt, I found that the failure of resume on normal boots is down to gsmd
> starting. I am looking into that now.
Great, looking forward your investigation.
> > One issue he found is that the device resets randomly if running from
> > the USB wall charger (but with battery present) if the debug board is
> > connected, where it can take up to 5 minutes until such a reset
> > happens.
> > Sounds like a fun problem to debug ...
Yeah, I only can use LCM to show the printk to debug the USB wall
charger issue. :-(
> This sounds like part of a larger collection of poorly understood power
> management bugs, including some boards (?) that auto-reset when cold (!)
> Why do I sometimes get a one-a-second PMU driver spew on the console
> until the power button is pressed? Why not never or always?
Basically, the SECOND interrupt is masked. But you still can get this
event when you read all the INT register.
> Why does
> the LCM backlight sometimes stay off forever until power is cycled
> rather than hard reset?
Well, I would ask HW people to help on this. This could speed up the
debugging on power issue.
> I guess we're hoping they magically went away on A5, which is possible
> due to developments on the PMU chip from the vendor: we will have to
> mount a sustained attack on them if they didn't.
> - -Andy
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