Add cadence-wdt bindings documentation.
Signed-off-by: Harini Katakam <harinik@xxxxxxxxxx>
---
v3 changes:
- Change reset property type and improve description.
- Improve description of clocks and interrupts.
- Use watchdog@ in the example.
- Use only cdns compatible string for now.
v2:
No changes
---
.../devicetree/bindings/watchdog/cadence-wdt.txt | 27 ++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
diff --git a/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
new file mode 100644
index 0000000..ab23e38
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
@@ -0,0 +1,27 @@
+Zynq Watchdog Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- compatible : Should be "cdns,wdt-r1p2".
+- clocks : Input clock specifier. This should be the ref clk.
+- reg : Physical base address and size of WDT registers map.
+- interrupts : Property with a value describing the interrupt
+ number. This interrupt is used for indication
+ when the watchdog times out.
+- interrupt-parent : Must be core interrupt controller.
+
+Optional properties
+- reset : If this property exists, then a reset is done
+ when watchdog times out.
+- timeout-sec : Watchdog timeout value (in seconds).
+
+Example:
+ watchdog@f8005000 {
+ compatible = "xlnx,zynq-wdt-r1p2";
+ clocks = <&clkc 45>;
+ interrupt-parent = <&intc>;
+ interrupts = <0 9 1>;
+ reg = <0xf8005000 0x1000>;
+ reset;
+ timeout-sec = <10>;
+ };
--
1.7.9.5
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