45 lines
1.2 KiB
Plaintext
45 lines
1.2 KiB
Plaintext
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Dallas DS1307 and compatible RTC
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Required properties:
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- compatible: should be one of:
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"dallas,ds1307",
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"dallas,ds1308",
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"dallas,ds1337",
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"dallas,ds1338",
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"dallas,ds1339",
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"dallas,ds1388",
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"dallas,ds1340",
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"dallas,ds1341",
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"maxim,ds3231",
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"st,m41t0",
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"st,m41t00",
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"st,m41t11",
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"microchip,mcp7940x",
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"microchip,mcp7941x",
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"pericom,pt7c4338",
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"epson,rx8025",
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"isil,isl12057"
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- reg: I2C bus address of the device
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Optional properties:
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- interrupts: rtc alarm interrupt.
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- clock-output-names: From common clock binding to override the default output
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clock name
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- wakeup-source: Enables wake up of host system on alarm
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- trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
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Selected resistor for trickle charger
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Possible values are 250, 2000, 4000
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Should be given if trickle charger should be enabled
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- trickle-diode-disable : ds1339, ds1340 and ds 1388 only
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Do not use internal trickle charger diode
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Should be given if internal trickle charger diode should be disabled
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Example:
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rtc1: ds1339@68 {
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compatible = "dallas,ds1339";
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reg = <0x68>;
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interrupt-parent = <&gpio4>;
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interrupts = <20 0>;
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trickle-resistor-ohms = <250>;
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};
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