linux-kernel - Re: [PATCH v4 2/6] dt-bindings: net: dsa: mediatek,mt7530: fix reset lines

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Date:   Tue, 23 Aug 2022 15:31:27 +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 v4 2/6] dt-bindings: net: dsa: mediatek,mt7530: fix reset
 lines

On 23.08.2022 13:44, Krzysztof Kozlowski wrote:
> On 20/08/2022 11:07, Arınç ÜNAL wrote:
>> - Fix description of mediatek,mcm. mediatek,mcm is not used on MT7623NI.
> 
> Separate commit. You are still doing here few things at a time.

Will split.

> 
>> - Add description for reset-gpios.
>> - Invalidate reset-gpios if mediatek,mcm is used. We cannot use multiple
>> reset lines at the same time.
>> - Invalidate mediatek,mcm if the compatible device is mediatek,mt7531.
>> There is no multi-chip module version of mediatek,mt7531.
>> - Require mediatek,mcm for mediatek,mt7621 as the compatible string is only
>> used for the multi-chip module version of MT7530.
>>
>> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
>> ---
>>   .../bindings/net/dsa/mediatek,mt7530.yaml     | 31 +++++++++++++++++--
>>   1 file changed, 28 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> index edf48e917173..4c99266ce82a 100644
>> --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
>> @@ -110,11 +110,15 @@ 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.
>>   
>>     reset-gpios:
>> +    description:
>> +      GPIO to reset the switch. Use this if mediatek,mcm is not used.
>> +      This property is optional because some boards share the reset line with
>> +      other components which makes it impossible to probe the switch if the
>> +      reset line is used.
>>       maxItems: 1
>>   
>>     reset-names:
>> @@ -165,6 +169,9 @@ allOf:
>>         required:
>>           - mediatek,mcm
>>       then:
>> +      properties:
>> +        reset-gpios: false
>> +
>>         required:
>>           - resets
>>           - reset-names
>> @@ -182,6 +189,24 @@ allOf:
>>           - core-supply
>>           - io-supply
>>   
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          items:
> 
> Again, not items. This can be just const or enum.

Will do.

> 
>> +            - const: mediatek,mt7531
>> +    then:
>> +      properties:
>> +        mediatek,mcm: false
>> +
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          items:
> 
> Ditto.
Arınç