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Diffstat (limited to 'Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml | 50 |
1 files changed, 50 insertions, 0 deletions
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..14b069599740 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml @@ -0,0 +1,50 @@ +# 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 intellectual property 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. + +allOf: + - $ref: watchdog.yaml# + +properties: + compatible: + enum: + - xlnx,versal-wwdt + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - compatible + - reg + - clocks + +unevaluatedProperties: false + +examples: + - | + watchdog@fd4d0000 { + compatible = "xlnx,versal-wwdt"; + reg = <0xfd4d0000 0x10000>; + clocks = <&clock25>; + timeout-sec = <30>; + }; +... |