topic Re: Issue in DDR calibration values in i.MX Processors

Issue in DDR calibration values

hrushinale — Sat, 13 Aug 2016 05:15:04 GMT

Hello Community,

We have two variants of custom board first one based on i.MX6 solo with 1GB ram and another based on i.MX6 Dualite with 2GB RAM.

When I run the DDR calibration for dualite board I got 12 updated calibration values

but when I run the calibration for Solo board with 1GB ,I am getting only 4 updated calibration values.

So my question is How can I get all the 12 calibration values for solo board?

we followed I.MX6DQSDL DDR3 Script Aid V0.10 .

Thanks & Regards,

Hrushi

igorpadykov — Sun, 14 Aug 2016 23:54:34 GMT

Hi Hrushi

seems this is described in sect.3.3.1 Identifying Issue on Calibrations

MX6 DRAM Port Application Guide :

There is a chance that there is an error during the calibration, it may

fail to find a valid delay window for some particular bytes.

Best regards

igor

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hrushinale — Tue, 16 Aug 2016 07:28:15 GMT

Hello Igorpadykov,

I run the test multiple times on two different solo boards but still I am getting only four values and not 12.

Kindly guide us regarding this issue.

Thanks & Regards,

Hrushi