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         "epson,rx8130"
  23 - reg: I2C bus address of the device
  24
  25 Optional properties:
  26 - interrupts: rtc alarm interrupt.
  27 - clock-output-names: From common clock binding to override the default output
  28                       clock name
  29 - wakeup-source: Enables wake up of host system on alarm
  30 - trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
  31         Selected resistor for trickle charger
  32         Possible values are 250, 2000, 4000
  33         Should be given if trickle charger should be enabled
  34 - aux-voltage-chargeable: ds1339, ds1340, ds1388 and rx8130 only
  35         Tells whether the battery/supercap of the RTC (if any) is
  36         chargeable or not.
  37         Possible values are 0 (not chargeable), 1 (chargeable)
  38
  39 Deprecated properties:
  40 - trickle-diode-disable : ds1339, ds1340 and ds1388 only
  41         Do not use internal trickle charger diode
  42         Should be given if internal trickle charger diode should be disabled
  43         (superseded by aux-voltage-chargeable)
  44
  45 Example:
  46         ds1339: rtc@68 {
  47                 compatible = "dallas,ds1339";
  48                 reg = <0x68>;
  49                 interrupt-parent = <&gpio4>;
  50                 interrupts = <20 0>;
  51                 trickle-resistor-ohms = <250>;
  52         };