1* Maxim DS3231 Real Time Clock 2 3Required properties: 4- compatible: Should contain "maxim,ds3231". 5- reg: I2C address for chip. 6 7Optional property: 8- #clock-cells: Should be 1. 9- clock-output-names: 10 overwrite the default clock names "ds3231_clk_sqw" and "ds3231_clk_32khz". 11 12Each clock is assigned an identifier and client nodes can use this identifier 13to specify the clock which they consume. Following indices are allowed: 14 - 0: square-wave output on the SQW pin 15 - 1: square-wave output on the 32kHz pin 16 17- interrupts: rtc alarm/event interrupt. When this property is selected, 18 clock on the SQW pin cannot be used. 19 20Example: 21 22ds3231: ds3231@51 { 23 compatible = "maxim,ds3231"; 24 reg = <0x68>; 25 #clock-cells = <1>; 26}; 27 28device1 { 29... 30 clocks = <&ds3231 0>; 31... 32}; 33 34device2 { 35... 36 clocks = <&ds3231 1>; 37... 38}; 39