I.MX6S system hand-up and can resume after sometimes

[18994128952]

Hello,everyone:

we are use i.mx6s chip.linux vesion linux3.0.35.

Our products  can work well.But when make it to work no stop.Sometimes the system hand-up for 24 minutes(more) or 20 or 13 minutes(less). My system log printk level is  4,But when this problem happens,system print nothing unusual.No alarm&no warming.

During this time,the rootfs we can not operate by uart,the display on the panel is hold.

After the time（24 or 20 or 13 ,minutes）,the system resume to normal,our product work well.

The problem's chance is not high,sometimes one day,sometimes 7days,sometimes very long.

Can you help me,thanks very much!

[igorpadykov]

Hi he

one can recheck hardware: memory

i.MX6/7 DDR Stress Test Tool V2.90 

and clocks with power supplies using i.MX6 System Development User’s Guide

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

from software side try L3.0.101_4.1.1 mentioned on https://community.nxp.com/thread/335403 

Best regards
igor
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[18994128952]

Hi igorpadykov

Thank you for reply.

1.We have used DDR Stress Test Tool V2.60 test our DDR HW.Our product run for 2 days,pass test.

2.Our HW is designed base on the mx6solo-duallite sabresd board,So I think the HW clock and power supplies maybe right.

By the way ,our Linux 3.0.35 BSP have changed by me.base on https://community.nxp.com/docs/DOC-94738 

So maybe this caused the problem?