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Subject[PATCH 1/3] dt-bindings: watchdog: xlnx,versal-wwdt: Add binding documentation for xilinx window watchdog device
Date
Add documentation for the binding of window watchdog device.

Signed-off-by: Srinivas Neeli <srinivas.neeli@amd.com>
---
.../bindings/watchdog/xlnx,versal-wwdt.yaml | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml b/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml
new file mode 100644
index 000000000000..986455efa6f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/xlnx,versal-wwdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Versal window watchdog timer controller
+
+maintainers:
+ - Neeli Srinivas <srinivas.neeli@amd.com>
+
+description:
+ Versal watchdog driver uses window watchdog mode. Window watchdog
+ timer(WWDT) contains closed(first) and open(second) window with
+ 32 bit width. Write to the watchdog timer within predefined window
+ periods of time. This means a period that is not too soon and a
+ period that is not too late. The WWDT has to be restarted within
+ the open window time. If software tries to restart WWDT outside of
+ the open window time period, it generates a reset.
+
+properties:
+ compatible:
+ enum:
+ - xlnx,versal-wwdt-1.0
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ timeout-sec: true
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ watchdog@fd4d0000 {
+ compatible = "xlnx,versal-wwdt-1.0";
+ reg = <0xfd4d0000 0x10000>;
+ clocks = <&clock25>;
+ timeout-sec = <30>;
+ };
+...
--
2.17.1
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