adlink-pps-in.dts

/dts-v1/;
/plugin/;

 /*
 * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


/ {
    overlay-name = "ADLINK GPIO for PPS_IN Device Tree Overlay";
    compatible = "nvidia,p3737-0000+p3701-0000", "nvidia,tegra234", "nvidia,tegra23x";
    jetson-header-name = "Jetson AGX CSI Connector";

    fragment@0 {
      target-path = "/";
        __overlay__ {
          adlink_pps_in {
            status = "okay";
            compatible = "pps-gpio";
            
            // gpios = <&tegra_aon_gpio TEGRA234_AON_GPIO(BB, 1) GPIO_ACTIVE_HIGH>;
            // => TEGRA234_AON_GPIO(BB, 1) = 1*8 + 1 = 9
            // => GPIO_ACTIVE_LOW = 1, GPIO_ACTIVE_HIGH = 0
            gpios = <&tegra_aon_gpio 9 0>;
              
            // Default assert is indicated by a rising edge. 
            // Uncomment the line below to enable falling-edge assert.
            // assert-falling-edge;
          };
        };
    };
};