sun50i-a64-ds3231.dts

/dts-v1/;
/plugin/;


/ {
	compatible = "allwinner,sun50i-a64",
		     "olimex,a64-olinuxino";
	description = "Enable DS3231 on UEXT as rtc0 with alarm (SQW) on GPIO PB0";
	fragment@0 {
		target-path = "/aliases";

		__overlay__ {
			rtc0 = "/soc/i2c@1c2b000/ds3231@68";
			rtc1 = "/soc/rtc@1f00000";
		};
	};

	fragment@1 {
		target = <&pio>;
		__overlay__ {
			alrm_pins: alrm_pins {
				pins = "PB0";
				function = "irq";
				bias-pull-up;
			};
		};
	};

	fragment@2 {
		target = <&i2c1>;
		__overlay__ {
			status = "okay";

			ds3231: ds3231@68 {
				compatible = "maxim,ds3231";
				reg = <0x68>;
				#clock-cells = <1>;
				interrupt-parent = <&pio>;
				interrupts = <1 0 8>; /* PB0 IRQ_TYPE_LEVEL_LOW */
				gpios = <&pio 1 0 1>; /* PB0 GPIO_ACTIVE_LOW */
				pinctrl-names = "default";
				pinctrl-0 = <&alrm_pins>;
				status = "okay";
			};
		};
	};
};