i2c1-rtc-ds3231.dts

/dts-v1/;
/plugin/;
/* Source: http://blog.fraggod.net/2015/11/25/replacing-built-in-rtc-with-i2c-battery-backed-one-on-beaglebone-black-from-boot.html*/
/* dtc -O dtb -o /lib/firmware/BB-RTC-02-00A0.dtbo -b0 i2c2-rtc-ds3231.dts */
/* bone_capemgr.enable_partno=BB-RTC-02 */
/* https://github.com/beagleboard/bb.org-overlays */

/ {
  compatible = "ti,beaglebone", "ti,beaglebone-black", "ti,beaglebone-green";
  part-number = "BB-RTC-02";
  version = "00A0";

  fragment@0 {
    target = <&i2c1>;

    __overlay__ {
      pinctrl-names = "default";
      pinctrl-0 = <&i2c1_pins>;
      status = "okay";
      clock-frequency = <100000>;
      #address-cells = <0x1>;
      #size-cells = <0x0>;

      rtc: rtc@68 {
        compatible = "dallas,ds3231";
        reg = <0x68>;
      };
    };
  };
};