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How to enter SNVS mode by SW on imx7d?

Question asked by Pawel Lenkow on Mar 31, 2020
Latest reply on Apr 17, 2020 by Wigros Sun

Hi!

 

According to "i.MX 7Dual Applications Processor Reference Manual, Rev. 1, 01/2018"  part 5.1.4.4 "Power Modes" there are two ways to enter "SNVS" mode  from "RUN" mode: ONOFF long press, or SW.

Could you specify exactly the SW way? What register accesses are required to do this?

In tested design I have no ONOFF button and I would make sure that the imx7 would always be able to return to "RUN" mode without user intervention, but I want to keep SNVS battery backup to still have SNVS security features.

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