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Hi Kulunu
DDR memory calibration is explained AN4467 i.MX6 Series DDR Calibration
https://www.nxp.com/docs/en/application-note/AN4467.pdf
other publications: i.MX6 System Development User’s Guide
https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf
Freescale i.MX6 DRAM Port Application Guide-DDR3
Comments on memory test link
i.MX6/7 DDR Stress Test Tool V2.90
Best regards
igor
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