linux-kernel - Re: [PATCH RESEND net-next 2/2] dt-bindings: net: dsa: mediatek,mt7530: document MDIO-bus

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Message-ID: <D03B73C8-0DD4-459E-8BA3-C1A0B16809A3@arinc9.com>
Date:   Mon, 27 Nov 2023 13:30:00 +0200
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Daniel Golle <daniel@...rotopia.org>
CC:     Vladimir Oltean <olteanv@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...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>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sean Wang <sean.wang@...iatek.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH RESEND net-next 2/2] dt-bindings: net: dsa: mediatek,mt7530: document MDIO-bus

On 27 November 2023 00:35:45 EET, Daniel Golle <daniel@...rotopia.org> wrote:
>On Sat, Aug 12, 2023 at 01:45:29AM +0300, Arınç ÜNAL wrote:
>> On 10.08.2023 01:01, Vladimir Oltean wrote:
>> > [...]
>> > Since commit fe7324b93222 ("net: dsa: OF-ware slave_mii_bus"), DSA as a
>> > framework also supports auto-creating an internal MDIO bus based on the
>> > presence of the "mdio" node name, so I guess it makes sense for the
>> > "mdio" to appear in the generic dsa.yaml if there's nothing else that's
>> > special about it.
>> 
>> I agree with this. I've done this which works. It's even found a port
>> node with the ethernet property missing, as it should've.
>
>Are you planning to complete/submit your work below?
>I'm asking because being able to reference the PHYs on the internal
>MDIO bus is mandatory on MT7988 which requires calibration data from
>NVMEM for each PHY, so supporting MT7988 depends on the associated
>driver change[1].
>
>[1]: https://patchwork.kernel.org/project/netdevbpf/patch/6eb1b7b8dbc3a4b14becad15f0707d4f624ee18b.1691246461.git.daniel@makrotopia.org/

This patch triggered conversation on a deeper level regarding the
devicetree bindings aspect of it. I will continue discussing that with the
maintainers here and achieve a mutual agreement.

To get things going on the driver side, I think it's fine to submit that
as a single patch. I'll do that in a week, if nobody else does it first.

Arınç