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         "microchip,mcp7940x",
  17         "microchip,mcp7941x",
  18         "pericom,pt7c4338",
  19         "epson,rx8025",
  20         "isil,isl12057"
  21 - reg: I2C bus address of the device
  22
  23 Optional properties:
  24 - interrupts: rtc alarm interrupt.
  25 - clock-output-names: From common clock binding to override the default output
  26                       clock name
  27 - wakeup-source: Enables wake up of host system on alarm
  28 - trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
  29         Selected resistor for trickle charger
  30         Possible values are 250, 2000, 4000
  31         Should be given if trickle charger should be enabled
  32 - trickle-diode-disable : ds1339, ds1340 and ds 1388 only
  33         Do not use internal trickle charger diode
  34         Should be given if internal trickle charger diode should be disabled
  35
  36 Example:
  37         rtc1: ds1339@68 {
  38                 compatible = "dallas,ds1339";
  39                 reg = <0x68>;
  40                 interrupt-parent = <&gpio4>;
  41                 interrupts = <20 0>;
  42                 trickle-resistor-ohms = <250>;
  43         };