I have a custom board with i.MX7S and Micron LPDDR2 (1GB in 2 Ranks, 32 bit).
I have created the DDR register values with NXP's 'i.MX7D DDR Controller Configuration Spreadsheet '
When I run the DDR Stress Test Tools;
1) The Calibration Passes @ 460 MHz - I get delay values with a good margin
2) The Stress Test runs @ 460 MHz overnight without error.
However when I try a Memory Write & Read it only writes successfully ONCE. After that I can't write another value, it always reads the same value, if I do a Calibration cycle then I can Write just one value again.
So obviously something is setup wrong or not configured correctly.
Can anyone help or has experience for using LPDDR2 with i.MX7?
Thanks
Hello,
The following is good place to continue discussion with DDR Stress Test designers.
i.MX6/7 DDR Stress Test Tool V2.60
Please try the recent release of "ddr_stress_tester_v2.60.zip".
Regards,
Yuri.