zmk/app/dts/behaviors/soft_off.dtsi

/*
 * Copyright (c) 2023 The ZMK Contributors
 *
 * SPDX-License-Identifier: MIT
 */

/ {
    behaviors {
        /omit-if-no-ref/ soft_off: z_so_off {
            compatible = "zmk,behavior-soft-off";
            #binding-cells = <0>;
            split-peripheral-off-on-press;
        };
    };
};