IMX6Q svns RTC loosing time across power cycles.

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IMX6Q svns RTC loosing time across power cycles.

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mfonseca
Contributor I

Hello,

I'm using a variscite DART-MX6 (i.MX6Q).  I'm trying to test the svns rtc.  I can set and read back time, but with a power cycle it looses its settings.

Currently my system is open (SEC_CONFIG = 0). 

cat /sys/fsl_otp/HW_OCOTP_CFG5
0x0

Assuming power is properly applied, does the system need to be closed (SEC_CONFIG[1]=1) in order for RTC to keep time across power cycle?

Thank you,

Marco

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Marco

one can check if licell attached to VDD_SNVS_IN of processor, use as help

i.MX6 System Development User’s Guide

https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf

>does the system need to be closed (SEC_CONFIG[1]=1) in order for RTC to keep time across power cycle?

no

Best regards
igor
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