Espressif Systems releases a Linux BSP developer preview for ESP32-S31 RISC-V microprocessor
March, two ESP32-S31 development boards followed in May, and mass production was announced a few weeks ago. The new RISC-V chip features an MMU (Memory Management Unit), which makes Linux much easier to handle, and the development boards also come with 16MB PSRAM, so a minimal Linux image is possible.
