[Trac #341] DCON init failure with Q2A22

[Zarro Boogs per Child]

#341: DCON init failure with Q2A22
---------------------+------------------------------------------------------
 Reporter:  dwmw2    |       Owner:  wmb at firmworks.com
     Type:  defect   |      Status:  new              
 Priority:  blocker  |   Milestone:  BTest-1          
Component:  OFW      |    Keywords:                   
---------------------+------------------------------------------------------
 I saw a dcon init failure this evening. Loading gxfb_dcon.ko in Linux and
 performing one 'fbtest setreg 0x4b 0xcc' fixed it.

 How many times are we writing 0xcc to register 0x4b in each test loop in
 the OF DCON initialisation?
 Hopefully not only once, still? We should do it at least 20 times in each
 frame, before each test. Or maybe more. How many attempted SMBus writes
 _can_ we do in 20ms?

-- 
Ticket URL: <http://dev.laptop.org/ticket/341>
One Laptop Per Child <http://laptop.org/>