[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 fhn):

 Replying to [comment:29 stuge]:
 > Yuval Hager already told us in http://wiki.openchrome.org/pipermail
 /openchrome-devel/2008-November/000141.html
 > Now to find out which individual bit(s) really cause the problem.

 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.)


 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.)

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Ticket URL: <http://www.openchrome.org/trac/ticket/288#comment:30>
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