Part Number: PROCESSOR-SDK-AM335X
Other Parts Discussed in Thread: TPS65910
Tool/software: Linux
Hi,
I am using internal rtc module in my am335x customized system and see the below action. And 32.768kHz crystal provided for AM335X RTC
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root@am335x-evm:~# date -s "2014-12-30 18:00:00"
Tue Dec 30 18:00:00 UTC 2014
root@am335x-evm:~# hwclock -w
root@am335x-evm:~# hwclock -r
Tue Dec 30 18:00:11 2014 0.000000 seconds
After minute the below command executed
root@am335x-evm:~# date
Tue Dec 30 18:01:09 UTC 2014
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After switch OFF my device and rebooted and see the following line during boot:
omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
root@am335x-evm:~#
root@am335x-evm:~# hwclock -r
Sat Jan 1 00:00:57 2000 0.000000 seconds
root@am335x-evm:~# date
Sat Jan 1 00:00:59 UTC 2000
root@am335x-evm:~# cat /sys/class/rtc/rtc0/time
00:01:17
What could be the reason why my RTC is not working. We have given the external battery backup i.e 3V is connected with PMIC TPS65910.
regards,
lofna
