Rasclock (PCF2127 ) Hardware Clock FreeBSD 12.0

[Stefan Parvu]

nxprtc driver results

1. Default test - passed 
Description: I can see the driver, NTP runs ok, after reboot system is ok and I can see activity from RTC via sysctl 
I can see sometimes from dmesg the following:

local_intc0: Spurious interrupt detected
local_intc0: Spurious interrupt detected
local_intc0: Spurious interrupt detected
local_intc0: Spurious interrupt detected


2. System power off 2hrs - failed 
Description: I set correctly the time on the system, NTP was running and I have shutdown the system.
After two hours I powered back the system but I see the RTC battery failed. 

mbox0: mbox response error
bcm2835_cpufreq0: can't get clock rate (id=8)
bcm2835_cpufreq0: ARM 600MHz, Core 250MHz, SDRAM -999MHz, Turbo OFF
nxprtc0: WARNING: RTC battery failed; time is invalid
nxprtc0: registered as a time-of-day clock, resolution 0.015625s
Release APs...done


I have changed now Varta 3V CR1220 to Energizer CR1220. Lets see.