ST M41T80 family of RTC and compatible Required properties: - compatible: should be one of: "st,m41t62", "st,m41t65", "st,m41t80", "st,m41t81", "st,m41t81s", "st,m41t82", "st,m41t83", "st,m41t84", "st,m41t85", "st,m41t87", "microcrystal,rv4162", - reg: I2C bus address of the device Optional properties: - interrupts: rtc alarm interrupt. - clock-output-names: From common clock binding to override the default output clock name - wakeup-source: Enables wake up of host system on alarm Optional child node: - clock: Provide this if the square wave pin is used as boot-enabled fixed clock. Example: rtc@68 { compatible = "st,m41t80"; reg = <0x68>; interrupt-parent = <&UIC0>; interrupts = <0x9 0x8>; clock { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <32768>; }; };