162306a36Sopenharmony_ciExportable MPIO interface of Exar UART chips 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciRequired properties of the device: 462306a36Sopenharmony_ci - exar,first-pin: first exportable pins (0..15) 562306a36Sopenharmony_ci - ngpios: number of exportable pins (1..16) 6