[Trac #108] we're still having dram problems but not CL this time

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#108: we're still having dram problems but not CL this time
----------------------+-----------------------------------------------------
 Reporter:  rminnich  |        Owner:  mfoster
     Type:  defect    |       Status:  new    
 Priority:  blocker   |    Milestone:         
Component:  hardware  |   Resolution:         
 Keywords:            |  
----------------------+-----------------------------------------------------
Comment (by rminnich):

 Fixed, per this change. Thanks to Tom Sylla. Rev is 2419 for LB.


 {{{
  src/northbridge/amd/gx2/raminit.c   (working copy)
 @@ -85,6 +85,14 @@
         /* load RDSYNC */
         msr = rdmsr(0x2000001f);
         msr.hi = 0x000ff310;
 +       /* the above setting is supposed to be good for "slow" ram. We
 have found that for
 +        * some dram, at some clock rates, e.g. hynix at 366/244, this
 will actually
 +        * cause errors. The fix is to just set it to 0x310. Tested on 3
 boards
 +        * with 3 different type of dram -- Hynix, PSC, infineon.
 +        * I am leaving this comment here so that at some future time
 nobody is tempted
 +        * to mess with this setting -- RGM, 9/2006
 +        */
 +       msr.hi = 0x00000310;

 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/108#comment:1>
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