DDR stress test cause system hang in Linux

[johncoll]

Hello NXPs,
Release: Yocto-Sumo (4.14.98_2.0.0_GA)
Board: i.MX8MQ EVK based custom board
We're working on iMX8MQ based custom-designed board with 2GB DDR4 RAM (MCIMX8M-EVK 3GB LPDDR4 RAM) now we're having an issue when doing stress test RAM in linux.
The system always hang when doing RAM stress test with more than 760MB RAM.

I've already done RAM testing with DDR Tool and mtest in Uboot and all PASSED, then configured the linux system recognized with 2GB RAM.
Does anyone provide the solution for this issue? Any guidance or suggestions will be really helpful.
Best regards,
John.

Updated: Add hang log and DDR Controller Configuration Spreadsheet 

[johncoll]

Hi Igor

I've tested with new patch and system still hang like before, but this time kernel show some log like bellow

Any idea?

Best regards.

John

[igorpadykov]

Hi John

1. what is full processor part number

2. please provide full log: uboot + linux

3. can you confirm that you used latest MX8M_LPDDR4_RPA_v24.xlsx tool

with latest ver.3.10 DDR test version below

i.MX8 MSCALE SERIES DDR Tool Release (V3.10) 

and followed Chapter 4 How to bring up a new MX8MSCALE board

MSCALE_DDR_Tool_User_Guide.pdf included in package
4. please try with uboot and linux from nxp source.codeaurora.org/external/imx/linux-imx  repository
linux-imx - i.MX Linux kernel 

uboot-imx - i.MX U-Boot 

5. what you do mean saying "doing stress test RAM in linux" - is it linux "memtester" or

some custom test ?

Best regards
igor
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