Code
PROJECT=Allwinner DEVICE=H3 ARCH=arm scripts/clean linux
PROJECT=Allwinner DEVICE=H3 ARCH=arm scripts/unpack linux
I would expect that both folders are functionally the same; PROJECT patches should be applied first, then DEVICE patches. You can check the unpack (and patch) process outside of a build with ^ those commands. It's easier to spot what's included/not-included. Patch files need to be something.patch and are applied in alpha-sort ordering.