#1476 NORM BTest-4: microphone circuits never powered down
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Fri May 25 01:04:01 EDT 2007
#1476: microphone circuits never powered down
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Reporter: dwmw2 | Owner: wad
Type: defect | Status: assigned
Priority: normal | Milestone: BTest-4
Component: kernel | Version: Build 406
Resolution: | Keywords: power
Verified: 0 |
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Comment (by wad):
The circuit submitted to Quanta was revised to work with the new OFW. The
longer time period circuit (and associated transistor) were thrown out.
But the glitch on suspend was tough. The AD1888 asserts VREFOUT as 2V
300nS after PCI_RST# is asserted. It then rises to AVDD and tracks it
down as it discharges over a period of 20-40 mS.
A clamp to PCI_RST# was inserted in place of the short time period
circuit.
No blinks were seen using Q2c13b, and the "s vbias-off many" test with a
bare board in a dark room.
Leaving open until confirmed in the schematics.
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Ticket URL: <http://dev.laptop.org/ticket/1476#comment:7>
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