Re: [Trac #239] Spurious ECC errors on CAFÉ NAND

Zarro Boogs per Child bugtracker at laptop.org
Fri Oct 27 08:55:53 EDT 2006


#239: Spurious ECC errors on CAFÉ NAND
----------------------+-----------------------------------------------------
 Reporter:  dwmw2     |        Owner:  mfoster
     Type:  defect    |       Status:  new    
 Priority:  blocker   |    Milestone:  BTest-1
Component:  hardware  |   Resolution:         
 Keywords:            |  
----------------------+-----------------------------------------------------
Changes (by dwmw2):

 * cc: cjb at laptop.org (added)
  * priority:  normal => blocker

Comment:

 I've fixed the crash, but obviously we still care about what seem to be
 spurious errors.

 I've committed some changes to the olpc-2.6 git tree and to the Fedora
 kernel (2.6.18-1.2826 or later) which should help debug this. Please load
 the module with 'debugecc=1' option (or boot with 'cafe_nand.debugecc=1'
 on the command line), and show the output.

 I'd like to see if we're _really_ getting errors or if it's purely a
 problem in the ECC.

 Also, please try the new 'slowtiming=1' option which backs off all the
 timings to their most conservative settings.

-- 
Ticket URL: <http://dev.laptop.org/ticket/239#comment:1>
One Laptop Per Child <http://laptop.org/>



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