AXI4 interface connects to AXI4-lite in clint

[jimmysitu]

Hi, All

I found the ariane_testharness.sv is conneting the clint to a AXI4 xbar, while clint is only a AXI4 lite interface.
Is there any design risk to doing this?

Thanks

[zarubaf]

Technically yes, if CVA6 would make use of AXI4 features (multiple beats, sub-bus size accesses). It is a bit hacky as it is, but CVA6 does not perform such accesses on the memory region of the CLINT. We do have an axi_to_axi_lite module here though.