Different MMDC register value for i.MX6ULL board

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Different MMDC register value for i.MX6ULL board

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Contributor V

Hi,

I'm a user of DDR_STRESS_TESTER tool for i.MX6ULL.

First of all, I compared imximage.cfg in yoctoBSP and I.MX6ULL_DDR3_Script_Aid_V0.01.xlsx then found 3 fields in 2 registers were different as following.

Register.cfg    vs .xlsx valueDifferent Fields

MMDC_MDREF

adr=0x21b0020

0x00000800 vs 0x00007800

REF_SEL(Refresh Selector): 00 -> 01

REFR(Refresh Rate): 001 -> 111

MMDC1_MDMISC

adr=0x21b0018

0x00201740 vs 0x00211740

WALAT(Write Addition latency): 0 -> 1

Which one is correct?

(Reference)
   http://cache.freescale.com/files/training/doc/ftf/2014/FTF-SDS-F0170.pdf        #p24 WALAT

   https://community.nxp.com/message/893175         #See table 44-8
   https://community.nxp.com/docs/DOC-330305
   https://community.nxp.com/docs/DOC-101708

Can someone help me?

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NXP TechSupport
NXP TechSupport

 Hello torus1000,

I double checked and both settings are correct. However, I was suggested to use the cfg file configuration.

I hope this helps!

Regards,

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NXP TechSupport
NXP TechSupport

 Hello torus1000,

I double checked and both settings are correct. However, I was suggested to use the cfg file configuration.

I hope this helps!

Regards,

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