xref: /freebsd/sys/contrib/device-tree/Bindings/watchdog/of-xilinx-wdt.txt (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
2---------------------------------------------------------
3
4Required properties:
5- compatible		: Should be "xlnx,xps-timebase-wdt-1.00.a" or
6			  "xlnx,xps-timebase-wdt-1.01.a".
7- reg			: Physical base address and size
8
9Optional properties:
10- clocks		: Input clock specifier. Refer to common clock
11			  bindings.
12- clock-frequency	: Frequency of clock in Hz
13- xlnx,wdt-enable-once	: 0 - Watchdog can be restarted
14			  1 - Watchdog can be enabled just once
15- xlnx,wdt-interval	: Watchdog timeout interval in 2^<val> clock cycles,
16			  <val> is integer from 8 to 31.
17
18Example:
19axi-timebase-wdt@40100000 {
20	clock-frequency = <50000000>;
21	compatible = "xlnx,xps-timebase-wdt-1.00.a";
22	clocks = <&clkc 15>;
23	reg = <0x40100000 0x10000>;
24	xlnx,wdt-enable-once = <0x0>;
25	xlnx,wdt-interval = <0x1b>;
26} ;
27