netdev - Re: [PATCH net-next] dt-bindings: net: ti: k3-am654-cpsw-nuss: Document Serdes PHY

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Date:   Wed, 8 Mar 2023 09:49:40 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     Rob Herring <robh@...nel.org>
CC:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <linux@...linux.org.uk>, <pabeni@...hat.com>,
        <krzysztof.kozlowski@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <nsekhar@...com>,
        <rogerq@...nel.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: Re: [PATCH net-next] dt-bindings: net: ti: k3-am654-cpsw-nuss:
 Document Serdes PHY

Hello Rob,

On 07/03/23 19:31, Rob Herring wrote:
> On Mon, Mar 06, 2023 at 03:17:50PM +0530, Siddharth Vadapalli wrote:
>> Update bindings to include Serdes PHY as an optional PHY, in addition to
>> the existing CPSW MAC's PHY. The CPSW MAC's PHY is required while the
>> Serdes PHY is optional. The Serdes PHY handle has to be provided only
>> when the Serdes is being configured in a Single-Link protocol. Using the
>> name "serdes-phy" to represent the Serdes PHY handle, the am65-cpsw-nuss
>> driver can obtain the Serdes PHY and request the Serdes to be
>> configured.
>>
>> Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
>> ---
>>
>> Hello,
>>
>> This patch corresponds to the Serdes PHY bindings that were missed out in
>> the series at:
>> Link: https://lore.kernel.org/r/20230104103432.1126403-1-s-vadapalli@ti.com/
>> This was pointed out at:
>> https://lore.kernel.org/r/CAMuHMdW5atq-FuLEL3htuE3t2uO86anLL3zeY7n1RqqMP_rH1g@mail.gmail.com/
>>
>>  .../bindings/net/ti,k3-am654-cpsw-nuss.yaml   | 21 +++++++++++++++++--
>>  1 file changed, 19 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
>> index 900063411a20..fab7df437dcc 100644
>> --- a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
>> +++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
>> @@ -126,8 +126,25 @@ properties:
>>              description: CPSW port number
>>  
>>            phys:
>> -            maxItems: 1
>> -            description: phandle on phy-gmii-sel PHY
>> +            minItems: 1
>> +            maxItems: 2
>> +            description:
>> +              phandle(s) on CPSW MAC's PHY (Required) and the Serdes
>> +              PHY (Optional). phandle to the Serdes PHY is required
>> +              when the Serdes has to be configured in Single-Link
>> +              configuration.
> 
> Like this:
> 
> minItems: 1
> items:
>   - description: CPSW MAC's PHY
>   - description: Serdes PHY. Serdes PHY is required
>       when the Serdes has to be configured in Single-Link
> 
>> +
>> +          phy-names:
>> +            oneOf:
>> +              - items:
>> +                  - const: mac-phy
>> +                  - const: serdes-phy
>> +              - items:
>> +                  - const: mac-phy
> 
> Drop this and use minItems in 1st 'items' entry.
> 
>> +            description:
>> +              Identifiers for the CPSW MAC's PHY and the Serdes PHY.
>> +              CPSW MAC's PHY is required and therefore "mac-phy" is
>> +              required, while "serdes-phy" is optional.
> 
> No need to state in plain text what the schema already says.

Thank you for reviewing the patch. I will implement your feedback and post the
v2 patch.

Regards,
Siddharth.