The OpenRISC and RISC-V processor architecture updates have both been submitted for the ongoing Linux 5.11 merge window.
OpenRISC, the open-source RISC-based ISA now in the works for two decades but still without any dedicated open-source ASIC in the wild, is seeing new platform support with Linux 5.11. The OpenRISC pull brings a LiteX SoC controller driver and other support around LiteX for OpenRISC. LiteX is a Migen/MiSoC CPU/SoC builder for deployments on FPGAs. LiteX already supports soft-core implementations of PicoRV32, VexRISCV, and others.