zmk/app/tests/ble/split/peripheral-encoder/shared.dtsi

/ {
    mock_encoder: mock_encoder {
        compatible = "zmk,sensor-encoder-mock";
        status = "disabled";
    };

    sensors: sensors {
        compatible = "zmk,keymap-sensors";
        sensors = <&mock_encoder>;
        triggers-per-rotation = <20>;
    };
};