RK3528 is a cost down SoC with high CPU performance.
However, it has poor PCIe performance (same for RK3576).
Also CPU 0/1 can't get any rest due to rkbin limitation.
Some code references: https://github.com/warpme/minimyth2
The current target code is too chaotic, the patches are
messy and disorderly, and there are still many duplicate
code. Pack it back to half a year ago.