boards/arduino/uno_r4/board.yml

board:
  name: arduino_uno_r4
  full_name: Arduino UNO R4 Minima/WiFi
  vendor: arduino
  revision:
    format: custom
    default: "minima"
    revisions:
      - name: "minima"
      - name: "wifi"
  socs:
    - name: r7fa4m1ab3cfm