BB-I2C2-PCF8523-00A0.dts (fixed)

/*
 * Copyright (C) 2017 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.
 */

/dts-v1/;
/plugin/;

// Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
&{/chosen} {
    overlays {
        BB-I2C2-PCF8523-00A0 = __TIMESTAMP__;
    };
};

// make the pcf8523 rtc0 (the primary rtc), renumber the internal rtc to rtc1
&{/aliases} {
    //rtc0 = &extrtc;   // XXX path references not supported in overlays
    //rtc0 = "/ocp/i2c@4819c000/pcf8523@68";   // kernel 4.19
    rtc0 = "/ocp/interconnect@48000000/segment@100000/target-module@9c000/i2c@0/pcf8523@68";  // kernel 5.10

    rtc1 = "/ocp/rtc@44e3e000";
};

&i2c2 {
    extrtc: pcf8523@68 {
        compatible = "nxp,pcf8523";
        reg = <0x68>;
    };
};