Merge tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
[muen/linux.git] / Documentation / devicetree / bindings / rtc / rtc-ds1307.txt
1 Dallas DS1307 and compatible RTC
2
3 Required properties:
4 - compatible: should be one of:
5         "dallas,ds1307",
6         "dallas,ds1308",
7         "dallas,ds1337",
8         "dallas,ds1338",
9         "dallas,ds1339",
10         "dallas,ds1388",
11         "dallas,ds1340",
12         "dallas,ds1341",
13         "maxim,ds3231",
14         "st,m41t0",
15         "st,m41t00",
16         "st,m41t11",
17         "microchip,mcp7940x",
18         "microchip,mcp7941x",
19         "pericom,pt7c4338",
20         "epson,rx8025",
21         "isil,isl12057"
22 - reg: I2C bus address of the device
23
24 Optional properties:
25 - interrupts: rtc alarm interrupt.
26 - clock-output-names: From common clock binding to override the default output
27                       clock name
28 - wakeup-source: Enables wake up of host system on alarm
29 - trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
30         Selected resistor for trickle charger
31         Possible values are 250, 2000, 4000
32         Should be given if trickle charger should be enabled
33 - trickle-diode-disable : ds1339, ds1340 and ds 1388 only
34         Do not use internal trickle charger diode
35         Should be given if internal trickle charger diode should be disabled
36
37 Example:
38         rtc1: ds1339@68 {
39                 compatible = "dallas,ds1339";
40                 reg = <0x68>;
41                 interrupt-parent = <&gpio4>;
42                 interrupts = <20 0>;
43                 trickle-resistor-ohms = <250>;
44         };