Here is a quote from https://en.wikipedia.org/wiki/ARM_big.LITTLE
Are you 100% sure about rk3399 or was it some general considerations or yours?
Quote:ARM big.LITTLE is a heterogeneous computing architecture developed by ARM Holdings, coupling relatively battery-saving and slower processor cores (LITTLE) with relatively more powerful and power-hungry ones (big). Typically, only one "side" or the other will be active at once, but all the cores have access to the same memory regions, so workloads can be swapped between Big and Little cores on the fly.
Are you 100% sure about rk3399 or was it some general considerations or yours?