iMX8MM SNVS mode

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siva_prabhakara
Contributor III

how to enter SNVS or RTC mode on iMX8MM.

Section 3.1.6 on this document https://www.nxp.com/docs/en/nxp/data-sheets/IMX8MMCEC.pdf

says about a SNVS oower mode with just SNVS power rails active.

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igorpadykov
NXP Employee
NXP Employee

Hi siva_prabhakara

 

one can try linux poweroff command

https://man7.org/linux/man-pages/man8/poweroff.8.html

Best regards
igor

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siva_prabhakara
Contributor III

hi Igor,

thanks, i read that document, how to turn off these rails? Can it be done via Software?

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igorpadykov
NXP Employee
NXP Employee

Hi siva_prabhakara

 

one can try linux poweroff command

https://man7.org/linux/man-pages/man8/poweroff.8.html

Best regards
igor

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igorpadykov
NXP Employee
NXP Employee

Hi siva_prabhakara

 

for entering SNVS mode it is necessary to turn off all power supplies,

leave only VDD_SNVS_0P8 (0.8 V), NVCC_SNVS_1P8 (1.8 V) powered from

battery or other external source.

 

1.jpg

 

Best regards
igor

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