linux-kernel - Re: [PATCH v3] dt-bindings: watchdog: davinci-wdt: convert txt to yaml

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Date:   Sat, 28 Oct 2023 19:51:15 +0200
From:   Nik Bune <n2h9z4@...il.com>
To:     conor+dt@...nel.org
Cc:     robh@...nel.org, devicetree@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.org, afd@...com,
        linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux@...ck-us.net, n2h9z4@...il.com, skhan@...uxfoundation.org,
        wim@...ux-watchdog.org
Subject: Re: [PATCH v3] dt-bindings: watchdog: davinci-wdt: convert txt to yaml

Hello! 
Thank you for your review. 

>On Fri, 27 Oct 2023 at 16:14, Conor Dooley <conor@...nel.org> wrote:
>Hey,
>
>On Thu, Oct 26, 2023 at 09:53:13PM +0200, Nik Bune wrote:
>> Convert txt file to yaml.
>> Add maintainers list.
>> Mark clock as required property, by reviewer's suggestion.
>> Add power-domains as optional property, by reviewer's suggestion.
>>
>> Signed-off-by: Nik Bune <n2h9z4@...il.com>
>> ---
>>
>> Changes in 3 (according to review comments):
>> - Added Andrew Davis <afd@...com> into maintainers list.
>> - Added power-domains property.
>>
>> v2 patch: https://lore.kernel.org/all/20231024195839.49607-1-n2h9z4@gmail.com/
>>
>>
>>  .../bindings/watchdog/davinci-wdt.txt         | 24 ---------
>>  .../bindings/watchdog/ti,davinci-wdt.yaml     | 52 +++++++++++++++++++
>>  2 files changed, 52 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..17c824f2fc7d
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/watchdog/ti,davinci-wdt.yaml
>> @@ -0,0 +1,52 @@
>> +# 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:
>> +  - Andrew Davis <afd@...com>
>> +
>> +allOf:
>> +  - $ref: watchdog.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - ti,davinci-wdt
>> +      - ti,keystone-wdt
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  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.
>
>I think you missed Rob's comment in reply to Andrew, about constraining
>and ordering the power-domains:
>https://lore.kernel.org/all/20231026203037.GA327324-robh@kernel.org/
>
>Cheers,
>Conor.

I didn't get what should be done with respect to the comment above:
Should we wait for the response from Andrew, 
or should we skip and remove the the power-domains definition for this binding, 
or add "maxItems: 1" to power-domains definition?

Thanks, Nik. 

>
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    watchdog@...0000 {
>> +        compatible = "ti,davinci-wdt";
>> +        reg = <0x02320000 0x80>;
>> +        timeout-sec = <30>;
>> +        clocks = <&clkwdtimer0>;
>> +    };
>> --
>> 2.34.1
>>