-`xxx_periph.h/*.c` - includes all headers related to a peripheral; declaration and definition of IO mapping for that hardware
Specially, the `xxx_reg.h` and `xxx_struct.h` headers that generated by script are under `register/soc` folder. Please DO NOT **add** other manual coded files under this folder.
For other soc headers that are used as wrapper, definition, signaling, mapping or manual coded registers, please add them under `include/soc` folder.