Hi tang
what board used in the case, if this is custom board first necessary
to run ddr test
i.MX 8M Family DDR Tool Release
and follow Chapter 4 How to bring up a new MX8MSCALE board MSCALE_DDR_Tool_User_Guide.pdf
included in ddr test package.
If this is EVK board follow Linux L4.14.98_2.0.0 Documentation
Linux Guide and use Linux Binary Demo Files - i.MX 8MMini EVK
Best regards
igor
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