Add documentation for the binding of window watchdog device. Signed-off-by: Srinivas Neeli <srinivas.neeli@xxxxxxx> --- .../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@xxxxxxx> + +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
