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Message-ID: <20231026203037.GA327324-robh@kernel.org>
Date:   Thu, 26 Oct 2023 15:30:37 -0500
From:   Rob Herring <robh@...nel.org>
To:     Andrew Davis <afd@...com>
Cc:     Nik Bune <n2h9z4@...il.com>, wim@...ux-watchdog.org,
        linux@...ck-us.net, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, skhan@...uxfoundation.org,
        m-karicheri2@...com, ivan.khoronzhuk@...com,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: watchdog: davinci-wdt: convert txt to
 yaml

On Tue, Oct 24, 2023 at 03:55:23PM -0500, Andrew Davis wrote:
> On 10/24/23 2:58 PM, Nik Bune wrote:
> > Convert txt file to yaml.
> > Add maintainers list, based on the git history.
> > Mark clock as required property, by reviewer's suggestion.
> > 
> > Signed-off-by: Nik Bune <n2h9z4@...il.com>
> > ---
> > 
> > Changes in v2 (according to review comments):
> > - Added clocks to the list of required properties.
> > - Updated clocks property to have only maxItems without $ref and description.
> > - Removed timeout-sec explicit definition, as it is defined in watchdog.yaml.
> > - Updated maintainers list from the git history.
> > 
> > v1 patch: https://lore.kernel.org/all/20231021171323.113208-1-n2h9z4@gmail.com/
> > 
> >   .../bindings/watchdog/davinci-wdt.txt         | 24 ----------
> >   .../bindings/watchdog/ti,davinci-wdt.yaml     | 47 +++++++++++++++++++
> >   2 files changed, 47 insertions(+), 24 deletions(-)
> >   delete mode 100644 Documentation/devicetree/bindings/watchdog/davinci-wdt.txt
> >   create mode 100644 Documentation/devicetree/bindings/watchdog/ti,davinci-wdt.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt b/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt
> > deleted file mode 100644
> > index aa10b8ec36e2..000000000000
> > --- a/Documentation/devicetree/bindings/watchdog/davinci-wdt.txt
> > +++ /dev/null
> > @@ -1,24 +0,0 @@
> > -Texas Instruments DaVinci/Keystone Watchdog Timer (WDT) Controller
> > -
> > -Required properties:
> > -- compatible : Should be "ti,davinci-wdt", "ti,keystone-wdt"
> > -- reg : Should contain WDT registers location and length
> > -
> > -Optional properties:
> > -- timeout-sec : Contains the watchdog timeout in seconds
> > -- clocks : the clock feeding the watchdog timer.
> > -	   Needed if platform uses clocks.
> > -	   See clock-bindings.txt
> > -
> > -Documentation:
> > -Davinci DM646x - https://www.ti.com/lit/ug/spruer5b/spruer5b.pdf
> > -Keystone - https://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf
> > -
> > -Examples:
> > -
> > -wdt: wdt@...0000 {
> > -	compatible = "ti,davinci-wdt";
> > -	reg = <0x02320000 0x80>;
> > -	timeout-sec = <30>;
> > -	clocks = <&clkwdtimer0>;
> > -};
> > diff --git a/Documentation/devicetree/bindings/watchdog/ti,davinci-wdt.yaml b/Documentation/devicetree/bindings/watchdog/ti,davinci-wdt.yaml
> > new file mode 100644
> > index 000000000000..4747be98b7d9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/watchdog/ti,davinci-wdt.yaml
> > @@ -0,0 +1,47 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/watchdog/ti,davinci-wdt.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Texas Instruments DaVinci/Keystone Watchdog Timer (WDT) Controller
> > +
> > +description: |
> > +  Documentation:
> > +  Davinci DM646x - https://www.ti.com/lit/ug/spruer5b/spruer5b.pdf
> > +  Keystone - https://www.ti.com/lit/ug/sprugv5a/sprugv5a
> > +
> > +maintainers:
> > +  - Murali Karicheri <m-karicheri2@...com>
> > +  - Ivan Khoronzhuk <ivan.khoronzhuk@...com>
> 
> Neither of these folks will be available for this, you can use me if
> you want an email that won't bounce for now.
> 
> > +
> > +allOf:
> > +  - $ref: watchdog.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - ti,davinci-wdt
> > +      - ti,keystone-wdt
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> 
> We also have some instances with an optional power-domains prop.
> 
>   power-domains:
>     description: A phandle and PM domain specifier as defined by bindings of
>       the power controller specified by phandle. See
>       Documentation/devicetree/bindings/power/power-domain.yaml for details.

But not what the schema should look like here. Same as others. How many 
and what order if more than 1.

Rob

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