xref: /freebsd/sys/contrib/device-tree/Bindings/rtc/cdns,rtc.txt (revision a03411e84728e9b267056fd31c7d1d9d1dc1b01e)
1Cadence Real Time Clock
2
3The Cadence RTC controller with date, time and alarm capabilities.
4The alarm may wake the system from low-power state.
5
6Required properties:
7- compatible: Should be "cdns,rtc-r109v3"
8- reg: Specifies base physical address and size of the register area.
9- interrupts: A single interrupt specifier.
10- clocks: Must contain two entries:
11	- pclk: APB registers clock
12	- ref_clk: reference 1Hz or 100Hz clock, depending on IP configuration
13	See ../clocks/clock-bindings.txt for details.
14
15Example:
16        rtc0: rtc@fd080000 {
17        	compatible = "cdns,rtc-r109v3";
18        	reg = <0xfd080000 0x1000>;
19
20        	clock-names = "pclk", "ref_clk";
21        	clocks = <&sysclock>, <&refclock>;
22
23        	interrupt-parent = <&gic>;
24        	interrupts = <0 6 IRQ_TYPE_LEVEL_HIGH>;
25        };
26