#10899 NORM Not Tri: XO 1.75 dual RTC synchronization

[Zarro Boogs per Child]

#10899: XO 1.75 dual RTC synchronization
--------------------------+-------------------------------------------------
 Reporter:  pgf           |                 Owner:             
     Type:  defect        |                Status:  new        
 Priority:  normal        |             Milestone:  Not Triaged
Component:  not assigned  |               Version:  1.75-A2    
 Keywords:                |           Next_action:  never set  
 Verified:  0             |   Deployment_affected:             
Blockedby:                |              Blocking:             
--------------------------+-------------------------------------------------
 {{{
 <smithbone> does the rtc driver work now?
 <pgf> it's complicated.
 <pgf> yes and no.
 <cjb> smithbone: it works but it doesn't do what you think it does :-)
 <pgf> there are two rtcs.
 <pgf> one in the chip, and one not in the chip.
 <wad> Damn Marvell
 <pgf> the one inside isn't powered when the chip is off.
 <pgf> so we have one outside that is.
 <pgf> but the one outside doesn't have alarms.
 <pgf> so if we want alarms, we have to use the one inside, while the
 system is running.
 <pgf> so we have to sync the inner clock to the outer clock, at boot, and
 vice-versa on shutdown.
 }}}

 we'll have to explore how linux manages two RTC drivers.

-- 
Ticket URL: <http://dev.laptop.org/ticket/10899>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system