Hi, we use i.MX6D (industrial) under Linux with dynamic CPU frequency from 400MHz-1200MHz. Our uboot makes DDR3L calibration with 800MHz during startup.
During DRAM test under Linux (memtester) we sometimes get errors on individual CPUs. Do you think this is because the frequency during calibration is just 800MHz? We tried to increase the frequency to 1200MHz but then the Linux boot sometimes crashes.