Documentation/devicetree/bindings/rtc/rtc-omap.txt

   1 TI Real Time Clock
   2
   3 Required properties:
   4 - compatible:
   5         - "ti,da830-rtc"  - for RTC IP used similar to that on DA8xx SoC family.
   6         - "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family.
   7                             This RTC IP has special WAKE-EN Register to enable
   8                             Wakeup generation for event Alarm. It can also be
   9                             used to control an external PMIC via the
  10                             pmic_power_en pin.
  11         - "ti,am4372-rtc" - for RTC IP used similar to that on AM437X SoC family.
  12 - reg: Address range of rtc register set
  13 - interrupts: rtc timer, alarm interrupts in order
  14 - interrupt-parent: phandle for the interrupt controller
  15
  16 Optional properties:
  17 - system-power-controller: whether the rtc is controlling the system power
  18   through pmic_power_en
  19 - clocks: Any internal or external clocks feeding in to rtc
  20 - clock-names: Corresponding names of the clocks
  21 - pinctrl-0: a phandle pointing to the pin settings for the device
  22 - pinctrl-names: should be "default"
  23
  24 Optional subnodes:
  25 - generic pinctrl node
  26
  27 Required pinctrl subnodes properties:
  28 - pins - Names of ext_wakeup pins to configure
  29
  30 Optional pinctrl subnodes properties:
  31 - input-enable - Enables ext_wakeup
  32 - ti,active-high - Set input active high (by default active low)
  33
  34 Example:
  35
  36 rtc@1c23000 {
  37         compatible = "ti,da830-rtc";
  38         reg = <0x23000 0x1000>;
  39         interrupts = <19
  40                       19>;
  41         interrupt-parent = <&intc>;
  42         system-power-controller;
  43         clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
  44         clock-names = "ext-clk", "int-clk";
  45
  46         pinctrl-0 = <&ext_wakeup>;
  47         pinctrl-names = "default";
  48
  49         ext_wakeup: ext-wakeup {
  50                 pins = "ext_wakeup0";
  51                 input-enable;
  52                 ti,active-high;
  53         };
  54 };