DDR tool supports i.MX8M family and LX2160A\LX2162A. DDR tool is part of Config tools for i.MX offering configuration, inspection, optimization, vTSA, stressing and code generation. It can be downloaded from 

https://www.nxp.com/design/designs/config-tools-for-i-mx-applications-processors:CONFIG-TOOLS-IMX

DDR tool User Guide is part of  User Guide for Config Tools for i.MX