I have following the instruction in this document (https://community.nxp.com/docs/DOC-340179). 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?