Hello,
We have an on-going review for baseline AM62L bl1 support in TF-A. It uses device tree (dts) based LPDDR4/DDR4 configuration.
https://review.trustedfirmware.org/q/topic:%22am62l-bl1%22
Does your board configuration requires reading entire LPDDR4/DDR4 configuration from eeprom or a variation type to modify certain DDR4 timing parameters?
Best, Hari Nagalla