I am in the process of porting u-boot for my custom IMX7 board. I am following this document for migrating the u-boot from IMX7 sabresd board. Also I have generated .cfg file using DDR stress testing tool. Now I came across this assemble file board/freescale/mx7dsabresd//plugin.S in the u-boot source code. Can anyone explain the purpose of this code file? Is this file needs to be ported based on my custom board? Because I can see code lines like "imx7d_ddr_freq_setting". Will this effect my board bring up in my custom board? Because I am using different ddr configurations.
Your suggestion will be much appreciated.