In Rust Embedded Working Group we use SVD files for different MCUs to generate Rust peripheral access bindings with
svd2rust tool. These files are normally provided by vendor. However, for SiFive chips we do not have anything like this so far and the only SVD for FE310-G000 chip was created by hand. This approach is time-consuming and error-prone.
In our RISC-V team we are trying to provide Rust support for different chips available on the market. We also have plans for supporting FU540. This chip is much more complicated compared to FE310, so it will be incredibly helpful if you provide register descriptions for it. For FE310 chips it would also be useful to have register descriptions provided by vendor to check that our hand-written version does not have bugs. Having an SVD description is not mandatory, I hope that any other machine-readable format will also work for us.
Additionally, some people use SVD files with gdb to improve debugging experience.