some DS1340 for a BBGG and things...

/* Used and molded from bb.org-overlays on github.com/beagleboard/bb.org-overlays */
/*
 * Copyright (C) 2018 Tim Small <tim@seoss.co.uk>
 *
 * Based on PB-I2C2-RTC-PCF8523.dts:
 *
 * Copyright (C) 2018 Robert Nelson <robertcnelson@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This overlay is for a Maxim (Dallas) DS1338 RTC connected via the
 * BeagleBone's second I2C bus.
 * https://www.maximintegrated.com/en/products/digital/real-time-clocks/DS1338.html
 *
 * It was built for the South Coast Science "DFE" air quality monitoring
 * cape, but may be useful for any hardware which includes a DS1338
 *
 * https://www.southcoastscience.com/products/
 *
 * https://github.com/south-coast-science/scs_documentation/wiki/Digital-Front-End-%28DFE%29-for-BeagleBone-v1
 */


/dts-v1/;
/plugin/;

#include <dt-bindings/board/am335x-bbw-bbb-base.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>

/ {
  fragment@0 {
    target-path="/";
    __overlay__ {

      chosen {
        overlays {
          BB-I2C0-DS1340-0A00 = __TIMESTAMP__;
        };
      };
    };
  };

  fragment@1 {
    target-path="/";
    __overlay__ {
      aliases {
        rtc0 = &extrtc;

        rtc1 = "/ocp/rtc@44e3e000";
      };
    };
  };
  fragment@2 {
    target = <&i2c0>;
     __overlay__ {
       status = "okay";

       #address-cells = <1>;
       #size-cells = <0>;

       extrtc: ds1340@6h {
         compatible = "maxim,ds1340";
         reg = <0x60>;
         /* DS1340: This is the last address seen before 0x7h that ends it all and returns to 0x0h (the start) */
       };
     };
  };
};