[Trac #1095] move a USB to port 4

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#1095: move a USB to port 4
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 Reporter:  mlj       |        Owner:  wad      
     Type:  task      |       Status:  new      
 Priority:  normal    |    Milestone:  Untriaged
Component:  hardware  |   Resolution:           
 Keywords:            |  
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Comment (by JordanCrouse):

 Actually, the 5536 does '''not''' support OTG
 (http://en.wikipedia.org/wiki/USB_On-The-Go), which is technically the
 ability to dynamically switch between host and device mode.  The 5536 does
 allow port 4 to be placed into either host or device mode at boot time,
 but after that, the port type cannot be changed.

 Moving port 4 somewhere other then the wifi is a great idea for
 flexibility in development and debugging, but device mode shouldn't be the
 default for production systems, since it will eliminate one of the USB
 ports that could be usable as a host.  I'm thinking the device mode could
 be enabled by a special forth command in olpc.fth.  Either way, the UDC
 driver should be provided in the kernel.

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Ticket URL: <http://dev.laptop.org/ticket/1095#comment:1>
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