Y-cable and USB-OTG: mutually exclusive
andy at openmoko.com
Tue Apr 29 10:18:19 CEST 2008
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Somebody in the thread at some point said:
|> Power isn't the only consideration, we already thought about bringing
|> out debug USB connector to the outside world. If that is what we do,
|> then it is sitting there ready to eat power the same as the OTG
|> connector, and it makes sense to allow it.
| And we lose our USB-OTG cert, which clearly states certified devices
| have to have "one, and *only* one, micro-USB-AB-receptacle" [2006-12-05
| USB-OTG supplement rev_1.3, §3.2]. As we may expect this doesn't apply
| for internally only accessible debug-connectors, it surely will hit us
| with two (identical!!!) external USBcon.
OK, that's an issue alright :-/ We could make it mini USB for debug I
guess. But then we can't share one Power adapter between the two ports.
~ So it stops making sense.
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