imx6Q - change ddr3

[nicehsieh]

Hi everyone,

Our custom imx6Q board all functions/components are workable.(The ddr use MT41K128M16*4)

Now, we want to use MT41K256M16(DDR3-1866) instead of MT41K128M16 that imx6Q use it on demo board.

The ram size upgraded from 1GB to 2GB. (MT41K256M16*4)

We referenced https://community.nxp.com/docs/DOC-105652 and http://www.imx6rex.com/software/how-to-run-ddr3-calibration-on-imx6/

As we used GUI_DDR_TEST_TOOL v2.5.2 or DDR_STRESS_TESTER v1.0.3 to test MT41K256M16, we got some problem as below

We are receiving an error message - " Failed to send calibration command".

But, we used GUI_DDR_TEST_TOOL v2.5.2 to test MT41K128M16 on our custom board, it was successful.

Here is our setting parameter for MT41K256M16 (Memory type: DDR3-1866)

About MT41K256M16 parameter is as below. (256Meg x 16)

We also tried to use DDR_STRESS_TESTER v1.0.3, but it doesn't work either.

Could you can give me some advice?

Thanks :smileyhappy:

[Yuri]

Hello,

   Please try parameters for DDR3L-1066, since i.MX6 real frequency is 528 MHz.

Have a great day,
Yuri

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[nicehsieh]

Hi Yuri,

     We tried, but it still doesn't work.

     Thanks

[Yuri]

Have You modified initialization script in the stress test to meet new DRAM

parameters ?

~Yuri.

[xingfucyc]

Thanks for your reply.

[xingfucyc]

I come across some similar question,we use MT41K128M16JT  instead of NT5CB128M16HP，I see the two is pin to pin compatible。where shoud I change in the software? is it some thing of script?