RTC issue


JH
 

Hi,

I built Yocto iMX6ULL image on Zeus kernel 4.19, but I have following
RTC errors:

[ 3494.446265] rtc rtc0: Timeout trying to get valid LPSRT Counter read
[ 4190.088406] rtc rtc0: Timeout trying to get valid LPSRT Counter read
[ 4885.740595] rtc rtc0: Timeout trying to get valid LPSRT Counter read

I measured iMX6ULL RTC_XTALI and RTC_XTALO signals connecting to a
32.768 kHz 90 kΩ ESR crystal, all good, not sure if it is caused by
kernel or Yocto build.

Someone suggested that I should remove the external RTC, the rationale
is that Linux is not really a real time OS, there is no battery for
supporting RTC. Appreciate your comments.

My apology if it is an off topic.

Thank you.

Kind regards,

- jupiter

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