[deliverable/linux.git] / Documentation / devicetree / bindings / watchdog / of-xilinx-wdt.txt

Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
---------------------------------------------------------

Required properties:
- compatible		: Should be "xlnx,xps-timebase-wdt-1.00.a" or
			  "xlnx,xps-timebase-wdt-1.01.a".
- reg			: Physical base address and size

Optional properties:
- clock-frequency	: Frequency of clock in Hz
- xlnx,wdt-enable-once	: 0 - Watchdog can be restarted
			  1 - Watchdog can be enabled just once
- xlnx,wdt-interval	: Watchdog timeout interval in 2^<val> clock cycles,
			  <val> is integer from 8 to 31.

Example:
axi-timebase-wdt@40100000 {
	clock-frequency = <50000000>;
	compatible = "xlnx,xps-timebase-wdt-1.00.a";
	reg = <0x40100000 0x10000>;
	xlnx,wdt-enable-once = <0x0>;
	xlnx,wdt-interval = <0x1b>;
} ;
Commit	Line	Data
a8b84b01 MS	1	Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
	2	---------------------------------------------------------
	3
	4	Required 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
	9	Optional properties:
	10	- clock-frequency : Frequency of clock in Hz
	11	- xlnx,wdt-enable-once : 0 - Watchdog can be restarted
	12	1 - Watchdog can be enabled just once
	13	- xlnx,wdt-interval : Watchdog timeout interval in 2^<val> clock cycles,
	14	<val> is integer from 8 to 31.
	15
	16	Example:
	17	axi-timebase-wdt@40100000 {
	18	clock-frequency = <50000000>;
	19	compatible = "xlnx,xps-timebase-wdt-1.00.a";
	20	reg = <0x40100000 0x10000>;
	21	xlnx,wdt-enable-once = <0x0>;
	22	xlnx,wdt-interval = <0x1b>;
	23	} ;