ds3231-rtc-i2c0.dts

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
//
// Copyright (C) 2020 Chen-Yu Tsai <wens@csie.org>
//
// DS3231 RTC module on RPi-compatible GPIO header (the I2C pins next to 3.3V)
// This is I2C0 on many Allwinner A31/H3/H5 based boards.
//
// Note that this overlay does not work on A83T based boards, as the RTC
// in the PMIC uses a different label, and thus the "rtc1" alias will not
// resolve correctly.
//
// This compensates for the lack of battery-backed RTC on many boards

#ifdef __DTO_TEST__
#include <arm/sun8i-h3-bananapi-m2-plus.dts>
#else
/dts-v1/;
/plugin/;
#endif

&{/} {
	aliases {
		/* Make the external RTC the default one */
		rtc0 = <&ds3231>;
		rtc1 = <&rtc>;
	};
};

&i2c0 {
	status = "okay";

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