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
15 Optional properties:
16 - system-power-controller: whether the rtc is controlling the system power
17 through pmic_power_en
18 - clocks: Any internal or external clocks feeding in to rtc
19 - clock-names: Corresponding names of the clocks
20 - pinctrl-0: a phandle pointing to the pin settings for the device
21 - pinctrl-names: should be "default"
22
23 Optional subnodes:
24 - generic pinctrl node
25
26 Required pinctrl subnodes properties:
27 - pins - Names of ext_wakeup pins to configure
28
29 Optional pinctrl subnodes properties:
30 - input-enable - Enables ext_wakeup
31 - ti,active-high - Set input active high (by default active low)
32
33 Example:
34
35 rtc@1c23000 {
36 compatible = "ti,da830-rtc";
37 reg = <0x23000 0x1000>;
38 interrupts = <19
39 19>;
40 interrupt-parent = <&intc>;
41 system-power-controller;
42 clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
43 clock-names = "ext-clk", "int-clk";
44
45 pinctrl-0 = <&ext_wakeup>;
46 pinctrl-names = "default";
47
48 ext_wakeup: ext-wakeup {
49 pins = "ext_wakeup0";
50 input-enable;
51 ti,active-high;
52 };
53 };
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