Isn't Wifi supposed to be off by default?
andy at openmoko.com
Thu Jan 15 21:43:22 CET 2009
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Somebody in the thread at some point said:
| Andy Green wrote:
|> That'd be worthwhile, great. I think someone looked at this in .tw
|> about a year ago but I never really read about what they found.
| Didn't you do some suspend current measurements early last year ?
| Do you remember how far down you could go ?
What was "normal" in suspend was between 5 - 10mA on average with GSM
side up. If you leave GSM side down, Allen went all the way to ~2mA.
|> Glamo is also permanently powered anyway, but it doesn't take 145 mA :-)
| Naw, when I throw a crowbar in its general direction, I get up to
| 40mA. (The crowbar being poke 0x48000000 0x22119190 to ignore
| nWAIT, then gpio j5=0 to hold the Glamo in reset.)
Fine, but it shouldn't be doing video at suspend time, so it's not the
| # cut USB power
| pmu 0x49=3
| 300.72mA 300.89mA 300.98mA 0.075mA
Hm this is abnormal already, 300mA.
| # WLAN reset
| gpio j12 j12=0
| 165.19mA 165.59mA 166.28mA 0.294mA
This didn't do much, maybe a bit suspicious.
| # GSM AMP
| pmu 0x15 0x15=0
| 165.34mA 165.50mA 165.80mA 0.144mA
| # GSM reset
| gpio b5 b5=1
| 165.24mA 165.40mA 165.55mA 0.102mA
Again it doesn't do much.
| # suspend
| echo mem >/sys/power/state
| 103.22mA 103.26mA 103.31mA 0.024mA
Suspend is doing stuff anyway.
Maybe pop the WLAN module physically to rule that out?
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