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- Dallas DS1307 and compatible RTC
- Required properties:
- - compatible: should be one of:
- "dallas,ds1307",
- "dallas,ds1308",
- "dallas,ds1337",
- "dallas,ds1338",
- "dallas,ds1339",
- "dallas,ds1388",
- "dallas,ds1340",
- "dallas,ds1341",
- "maxim,ds3231",
- "st,m41t0",
- "st,m41t00",
- "st,m41t11",
- "microchip,mcp7940x",
- "microchip,mcp7941x",
- "pericom,pt7c4338",
- "epson,rx8025",
- "isil,isl12057"
- - 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
- - trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
- Selected resistor for trickle charger
- Possible values are 250, 2000, 4000
- Should be given if trickle charger should be enabled
- - trickle-diode-disable : ds1339, ds1340 and ds 1388 only
- Do not use internal trickle charger diode
- Should be given if internal trickle charger diode should be disabled
- Example:
- rtc1: ds1339@68 {
- compatible = "dallas,ds1339";
- reg = <0x68>;
- interrupt-parent = <&gpio4>;
- interrupts = <20 0>;
- trickle-resistor-ohms = <250>;
- };
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