#11085 BLOC 1.5-har: XO-1.75 Memory errors

[Zarro Boogs per Child]

#11085: XO-1.75 Memory errors
-------------------------------------------+--------------------------------
           Reporter:  wad                  |       Owner:  wad            
               Type:  defect               |      Status:  assigned       
           Priority:  blocker              |   Milestone:  1.5-hardware-C 
          Component:  ofw - open firmware  |     Version:  1.75-B1        
         Resolution:                       |    Keywords:  XO-1.75, memory
        Next_action:  reproduce            |    Verified:  0              
Deployment_affected:                       |   Blockedby:                 
           Blocking:                       |  
-------------------------------------------+--------------------------------

Comment(by wad):

 Using Q4B08ra and the android kernel (from beta2), we have now run five
 laptops for 160+ hours, and another 20 for 72+ hours with no memtest
 errors and no kernel crashes.

 This implies that whatever is causing our memory problems can be fixed by
 improving the software.

 Q4B08ra was almost identical to Q4B07re, except that PHY_RFIFO_PTR_LDY_VAL
 and DQ_EXT_DLY are both set to 5.

-- 
Ticket URL: <http://dev.laptop.org/ticket/11085#comment:16>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system