Have a great day,
The NXP does not provide public DDR stress tools for the LS1043A. I think the double data rate (DDR) RAM configuration and validation tool, which is an embedded component of QorIQ Configuration and Validation Suite (QCVS) can help you. Please see
http://www.nxp.com/assets/documents/data/en/user-guides/QCVS_DDR_User_Guide.pdf
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