[Trac #1339] CAFE SD controller doesn't wake up fast enough

Zarro Boogs per Child bugtracker at laptop.org
Sun Apr 15 13:43:45 EDT 2007


#1339: CAFE SD controller doesn't wake up fast enough
--------------------------+-------------------------------------------------
 Reporter:  PierreOssman  |       Owner:  mlj      
     Type:  defect        |      Status:  new      
 Priority:  normal        |   Milestone:  Untriaged
Component:  hardware      |    Keywords:           
--------------------------+-------------------------------------------------
 There are some problems with the time it takes for the CAFE SD controller
 to wake up. Basically, the problem is that the driver is alive and kicking
 way sooner than the hardware. And so far, we haven't found anything decent
 to wait on.

 The two observed problems are:

  1 The controller reports the slot as empty and detection as stable even
 though a card is in there. After about 400 ms (from when the driver
 resumes), the controller signals "card inserted".

  2 Even after this, the controller doesn't seem to have everything up and
 running as it should. All commands sent to the card just timeout.
 Redetection a bit later works fine, so the weird state isn't permanent.

-- 
Ticket URL: <http://dev.laptop.org/ticket/1339>
One Laptop Per Child <http://laptop.org/>



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