@Long-Johnny 1.5gb issue is a *known issue*   The problem is in u-boot, rather to explain it in a simple manner, the DRAM controller in H616/H18 is *undocumented*, so developers has to probe in the dark to try to reverse engineer how it works, it is a 'miracle' that it works today where there is practically *no documentation* about the DRAM controller. The dram chips has registers which encode the size of the dram, but that there is *no way* to access the dram registers because t