A few days ago the RISC-V pull request landed in Linux 5.19 with support for RISC-V 32-bit (RV32) binaries on RV64, enabling the new Svpbmt extension, and other improvements. On Friday a secondary set of RISC-V changes were sent in for Linux 5.19 that includes adding the DeviceTree files for another new RISC-V board.
Microchip Technology has contributed the DeviceTree support for the PolarBerry board that includes the PolarFire SoC FPGA for FPGA capabilities paired with a 64-bit RISC-V multi-core processor. The mainline Linux kernel has already seen PolarFire SoC support while now the PolarBerry is the latest supported board based on it.