#11212 NORM Future : renumber XO-1.75 serial ports

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#11212: renumber XO-1.75 serial ports
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 Reporter:  dsd     |                 Owner:  saadia        
     Type:  defect  |                Status:  new           
 Priority:  normal  |             Milestone:  Future Release
Component:  kernel  |               Version:  not specified 
 Keywords:          |           Next_action:  never set     
 Verified:  0       |   Deployment_affected:                
Blockedby:          |              Blocking:                
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 The XO-1.75 has four serial ports.

  * ttyS0: quanta's debug connector
  * ttyS1: unconnected
  * ttyS2: standard serial port used for OFW/kernel messages, runs a getty
 during Linux operation
  * ttyS3: alternate serial port, nothing uses it by default

 Paul suggests that we could unravel the mmp2/pxa layers a bit so that we
 can assign a better numbering scheme. Renaming ttyS2 to ttyS0 would solve
 a few special cases (bringing it in-line with XO-1/XO-1.5).

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Ticket URL: <http://dev.laptop.org/ticket/11212>
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