Rasclock (PCF2127 ) Hardware Clock FreeBSD 12.0

[Stefan Parvu]

2hrs test:

 * time was correct 

 * but system log showed:

nxprtc0: <NXP PCF2129 RTC> at addr 0xa2 on iicbus0
nxprtc0: WARNING: RTC battery failed; time is invalid
nxprtc0: registered as a time-of-day clock, resolution 0.015625s
nxprtc0: RTC clock not running


 * after I did kldunload / load I got:

nxprtc0: detached
iicbus0: <unknown card> at addr 0xa2
nxprtc0: <NXP PCF2129 RTC> at addr 0xa2 on iicbus0
nxprtc0: registered as a time-of-day clock, resolution 0.015625s

I will run a longer test (6-8hrs) and as well test Raspbian on this hdw to really rule out
hardware probalems

Stefan Parvu
sparvu at kronometrix.org



> On 18 Jul 2019, at 23.49, Stefan Parvu <sparvu at kronometrix.org> wrote:
> 
>> warning: KLD '/boot/kernel/nxprtc.ko' is newer than the linker.hints file
>> nxprtc0: <NXP PCF2129 RTC> at addr 0xa2 on iicbus0
>> nxprtc0: registered as a time-of-day clock, resolution 0.015625s
> 
> ok. that was just an warning. I re-created anyway the linker.hints and
> now that warning is gone.
> 
> anyway, here the main issue:
> 
> If I keep my RBPI 10 minutes down, no power, all good, time is correctly kept
> and displayed.
> 
> $ date
> Thu Jul 18 20:46:21 UTC 2019
> 
> $ kldstat
> Id Refs Address                Size Name
> 1    9 0xffff000000000000  13d1480 kernel
> 3    1 0xffff000001415000    40ea8 nxprtc.ko
> 4    1 0xffff000053600000    41000 tmpfs.ko
> 5    1 0xffff000053641000    31000 mac_ntpd.ko
> 
> $ dmesg | grep nxp
> nxprtc0: <NXP PCF2129 RTC> at addr 0xa2 on iicbus0
> nxprtc0: registered as a time-of-day clock, resolution 0.015625s
> 
> I will try to keep it off now for +1hr - and then I bet the problems start to show.
> 
> Stefan 
> 
> 
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