XO 1.75 dual RTC synchronization
|Reported by:||pgf||Owned by:||buytenh|
|Keywords:||Cc:||saadia, cjb, pgf|
|Deployments affected:||Action Needed:||design|
<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.
Change History (7)
comment:1 Changed 4 years ago by Quozl
- Action Needed changed from never set to design
- Component changed from not assigned to kernel
- Milestone changed from Not Triaged to 1.75-software
- Owner set to buytenh
Changed 4 years ago by martin.langhoff
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