[Openchrome-users] [openChrome] #288: openchrome interferes with PCI-Express

[OpenChrome Trac]

#288: openchrome interferes with PCI-Express
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 Reporter:  ljacob  |        Owner:  jnettlet      
     Type:  defect  |       Status:  assigned      
 Priority:  major   |    Component:  initialization
  Version:  trunk   |   Resolution:                
 Keywords:          |     Blocking:  261           
Blockedby:          |  
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Comment(by stuge):

 Replying to [comment:30 fhn]:
 > Yuval commented out the line which set DVP1 and DVP2 to on. Because of
 the wrong mask in next writeSeq DVP1 and DVP2 never got deactivited, so no
 need to turn them on again. This is effectively the same what my patch
 does. (Completely stop fiddling with this register.)

 Yes, almost the same. Your patch takes out all writes and Yuval still had
 some (redundant and possibly dangerous) writes.


 > Concerning the bits to set:
 > Have a look at comment20. I tried to explain that the pci-express bus
 goes down as soon as the bit for DVP2 gets set. (Set 3C5.2A bit 2 and 3 to
 on and PCI-express will be off.)

 Right, sorry I missed that.

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Ticket URL: <http://www.openchrome.org/trac/ticket/288#comment:32>
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