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RAM calibration for iMX8mq custom board.

Question asked by Thinh Nguyen on Mar 12, 2019
Latest reply on Mar 19, 2019 by Thinh Nguyen

I have following the instruction in this document ( I have already generated  "ddr_init.c" and "ddrphy_train.c" by using tool for one custom board. I have some questions need to be clarified:

1. I do calibration process for one board then I apply the result for all or I need to do for each board? Please advice!

2. If I do calibration process for more than one custom boards, How many custom board I need to do? 

3. If I do calibration process for more than one custom boards, there will be a lot of "ddr_init.c" and "ddrphy_train.c". How can I choose the correct one to integrate with u-boot?