I.MX8M would automatically crashes under do not do anything

[dylan_lin]

Hello experts ,

I found my I.MX8M board would automatically crashes under do not do anything,

( can't output log or key any command )

it might happen between 1~2 hour,

but after  i keyin suspend order , the I.MX8M would not crash ,

this scenario can't happen in heavy loading and any also can't happen in any thread was running.

Device information as below:

CPU : MIMX8MQ6CVAHZAB

LPDDR4 : MT53B768M32D4NQ-062 WT:B

PMIC : PF4210

[dylan_lin]

Dear  Igor

It is not I.MX8M evk , but i used LPDDR4 512MB and 4GB to design in this case,

as so far , we tried to build 512MB and 4GB two versions base on the Linux 4.14.98.2.20,

the 4GB and 512MB both of two version crashed under do nothing , but 512MB version always crashed

between 1~2 hours , the 4GB version can stay idle 2~3 days.

this issue was so hardly to find out the root cause , because it was not to log out , and cant key in

any commands .

Do you have any thoughts and directions on this issue?

[igorpadykov]

Hi Dylan

could you try to reproduce issue on i.MX8M EVK with latest

Demo Image  Linux Binary Demo Files - i.MX 8MQuad EVK

If issue can not be reproduced, suggest to rerun ddr test and update image

with new lpddr4 calibration settings.

https://community.nxp.com/docs/DOC-340179 

Best regards
igor

[igorpadykov]

Hi Dylan

if this is i.MX8M EVK, may be recommended to try latest

Demo Image  Linux Binary Demo Files - i.MX 8MQuad EVK

from software link i.MX Software | NXP 

If this will not help nxp has return service: Returns and Warranty Information | NXP 

Best regards
igor
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