netdev - Re: [PATCH 1/4] dt-bindings: net: dsa: mediatek,mt7530: make trivial changes

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Date:   Fri, 12 Aug 2022 01:09:04 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        Sander Vanheule <sander@...nheule.net>,
        René van Dorst <opensource@...rst.com>,
        Daniel Golle <daniel@...rotopia.org>, erkin.bozoglu@...ont.com,
        Sergio Paracuellos <sergio.paracuellos@...il.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: net: dsa: mediatek,mt7530: make trivial
 changes

On 2.08.2022 11:41, Krzysztof Kozlowski wrote:
> On 30/07/2022 16:26, Arınç ÜNAL wrote:
>> Make trivial changes on the binding.
>>
>> - Update title to include MT7531 switch.
>> - Add me as a maintainer. List maintainers in alphabetical order by first
>> name.
>> - Add description to compatible strings.
>> - Fix MCM description. mediatek,mcm is not used on MT7623NI.
>> - Add description for reset-gpios.
>> - Remove quotes from $ref: "dsa.yaml#".
>>
>> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
>> ---
>>   .../bindings/net/dsa/mediatek,mt7530.yaml     | 27 ++++++++++++++-----
>>   1 file changed, 20 insertions(+), 7 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> index 17ab6c69ecc7..541984a7d2d4 100644
>> --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> @@ -4,12 +4,13 @@
>>   $id: http://devicetree.org/schemas/net/dsa/mediatek,mt7530.yaml#
>>   $schema: http://devicetree.org/meta-schemas/core.yaml#
>>   
>> -title: Mediatek MT7530 Ethernet switch
>> +title: Mediatek MT7530 and MT7531 Ethernet Switches
>>   
>>   maintainers:
>> -  - Sean Wang <sean.wang@...iatek.com>
>> +  - Arınç ÜNAL <arinc.unal@...nc9.com>
>>     - Landen Chao <Landen.Chao@...iatek.com>
>>     - DENG Qingfang <dqfext@...il.com>
>> +  - Sean Wang <sean.wang@...iatek.com>
>>   
>>   description: |
>>     Port 5 of mt7530 and mt7621 switch is muxed between:
>> @@ -66,6 +67,14 @@ properties:
>>         - mediatek,mt7531
>>         - mediatek,mt7621
>>   
>> +    description: |
>> +      mediatek,mt7530:
>> +        For standalone MT7530 and multi-chip module MT7530 in MT7623AI SoC.
>> +      mediatek,mt7531:
>> +        For standalone MT7531.
>> +      mediatek,mt7621:
>> +        For multi-chip module MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs.
> 
> If compatible: is changed to oneOf, you can use description for each
> item. Look at board compatibles (arm/fsl.yaml)

Will do, thanks for the example.

> 
>> +
>>     reg:
>>       maxItems: 1
>>   
>> @@ -79,7 +88,7 @@ properties:
>>     gpio-controller:
>>       type: boolean
>>       description:
>> -      if defined, MT7530's LED controller will run on GPIO mode.
>> +      If defined, MT7530's LED controller will run on GPIO mode.
>>   
>>     "#interrupt-cells":
>>       const: 1
>> @@ -98,11 +107,15 @@ properties:
>>     mediatek,mcm:
>>       type: boolean
>>       description:
>> -      if defined, indicates that either MT7530 is the part on multi-chip
>> -      module belong to MT7623A has or the remotely standalone chip as the
>> -      function MT7623N reference board provided for.
>> +      Used for MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs which the MT7530
>> +      switch is a part of the multi-chip module.
> 
> Does this mean it is valid only on these variants? If yes, this should
> have a "mediatek,mcm:false" in allOf:if:then as separate patch (with
> this change in description).

Only valid for those, yes. I'll make it false in allOf:if:then for 
mediatek,mt7531. It either can or can't be used for mediatek,mt7530 so 
nothing to do there.

> 
>>   
>>     reset-gpios:
>> +    description:
>> +      GPIO to reset the switch. Use this if mediatek,mcm is not used.
> 
> The same. Example:
> https://elixir.bootlin.com/linux/v5.17-rc2/source/Documentation/devicetree/bindings/mfd/samsung,s5m8767.yaml#L155

Thanks, I'll make it false in allOf:if:then for mediatek,mcm.

Arınç