DDR Stress Test Questions

[bcstewart]

Hi,

I am running DDR Stress Tester V2.7 on a iMX6DQ.  I am using the GUI version.

I have some questions.

1.  Both the calibration and stress tests report the CPU clock frequency is 1GHz.  I tried using the pull-down menu to change to 800MHz, but it doesn't change the value in the result window.  I am using a industrial version of iMX6 so max CPU speed is 800MHz.  How can I verify the CPU runs at 800MHz?  Will this affect the calibration values?  Does it matter?

2.  Calibration and Stress report V2.6.  I am using 2.7.  https://community.nxp.com/docs/DOC-105652 Why is there a difference?  Is it an error?

============================================
        DDR Stress Test (2.6.0)
        Build: Aug  1 2017, 17:33:25
        NXP Semiconductors.
============================================

3.  What does setting the MR1 value do?  Does it change SRC_SBMR1 or SRC_SBMR2?

4.  Is there more documentation available to explain what some of the numbers mean during calibration and test beyond this post:  i.MX6/7 DDR Stress Test Tool V2.70 

[Yuri]

Hello,

1.

  I just check "the pull-down menu to change to 800MHz" of the i.MX6/7 DDR Stress Test Tool V2.70.

It works with my i.MX6 SDP. 

2.

 I used https://community.nxp.com/servlet/JiveServlet/download/105652-32-407585/ddr_stress_tester_v2.70.exe.... 

3.

   Look at the following regarding MR1

https://community.nxp.com/message/562332 

4.

   You may look at
Freescale i.MX6 DRAM Port Application Guide-DDR3 

Have a great day,
Yuri

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