AnsweredAssumed Answered

How to use DDR3 Calibration Values

Question asked by Steve Glover on Mar 23, 2016
Latest reply on Mar 25, 2016 by SUNNY VAN

Hi

I have a custom board based on an iMX6UL processor. I have used the DDR Stress Tester V2.51 to determine the DDR3 calibration values. Now I have the values, how do I include them into my linux build? Specifically, which file do I need to modify with the calibration values?

 

I am using the Yocto Project, build (imx-3.14.38-6UL_ga).

 

I have tried to find the file, the closest I found was a file called plugin.S which defines an assembler macro (imx6ul_ddr3_arm2_setting) which loads the DDR control registers. Is this the file to use?

 

Thanks for your help

Steve

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