xref: /freebsd/sys/contrib/device-tree/Bindings/watchdog/marvel.txt (revision 924226fba12cc9a228c73b956e1b7fa24c60b055) 
1* Marvell Orion Watchdog Time
2
3Required Properties:
4
5- Compatibility : "marvell,orion-wdt"
6		  "marvell,armada-370-wdt"
7		  "marvell,armada-xp-wdt"
8		  "marvell,armada-375-wdt"
9		  "marvell,armada-380-wdt"
10
11- reg		: Should contain two entries: first one with the
12		  timer control address, second one with the
13		  rstout enable address.
14
15For "marvell,armada-375-wdt" and "marvell,armada-380-wdt":
16
17- reg		: A third entry is mandatory and should contain the
18                  shared mask/unmask RSTOUT address.
19
20Clocks required for compatibles = "marvell,orion-wdt",
21				  "marvell,armada-370-wdt":
22- clocks : Must contain a single entry describing the clock input
23
24Clocks required for compatibles = "marvell,armada-xp-wdt"
25				  "marvell,armada-375-wdt"
26				  "marvell,armada-380-wdt":
27- clocks : Must contain an entry for each entry in clock-names.
28- clock-names : Must include the following entries:
29  "nbclk" (L2/coherency fabric clock),
30  "fixed" (Reference 25 MHz fixed-clock).
31
32Optional properties:
33
34- interrupts	: Contains the IRQ for watchdog expiration
35- timeout-sec	: Contains the watchdog timeout in seconds
36
37Example:
38
39	wdt@20300 {
40		compatible = "marvell,orion-wdt";
41		reg = <0x20300 0x28>, <0x20108 0x4>;
42		interrupts = <3>;
43		timeout-sec = <10>;
44		clocks = <&gate_clk 7>;
45	};
46