Unterstanding RK3328 UART Interface Register Offsets

[krjdev]

Hello Community!

Don't know if this is the right forum for this question...

Why have UART_RBR, UART_THR and UART_DLL the same offset? Currently I have
not found the reason. There another registers which shares the same offset.


Why I need this information?

First of all, I bought this good piece of hardware for my own embedded HW/SW projects.
Want to use it for Bare-Metal projects (no Linux or *BSD), only currently U-Boot as loader
for my own RTOS (still under development but currently only for the purpose of education).

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