On Tue, Sep 27, 2022 at 04:32:55PM +0530, Srinivas Neeli wrote: > Add documentation for the binding of window watchdog device. Subject space is precious, but you say 'watchdog' and 'binding documentation' (dt-bindings) twice. > > 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 1.0 versions feel made up. Is this a soft IP, because that is really the only place we use version numbers. More generally, version numbers need to correspond to something. > + > + 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 > >
