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         };