netdev - Re: [PATCH net-next v1 2/7] dt-bindings: net: phy: add PoDL PSE property

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Message-ID: <20220822184534.GB113650-robh@kernel.org>
Date:   Mon, 22 Aug 2022 13:45:34 -0500
From:   Rob Herring <robh@...nel.org>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Corbet <corbet@....net>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
        David Jander <david@...tonic.nl>
Subject: Re: [PATCH net-next v1 2/7] dt-bindings: net: phy: add PoDL PSE
 property

On Fri, Aug 19, 2022 at 02:01:04PM +0200, Oleksij Rempel wrote:
> Add property to reference node representing a PoDL Power Sourcing Equipment.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  Documentation/devicetree/bindings/net/ethernet-phy.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> index ed1415a4381f2..49c74e177c788 100644
> --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> @@ -144,6 +144,12 @@ properties:
>        Mark the corresponding energy efficient ethernet mode as
>        broken and request the ethernet to stop advertising it.
>  
> +  ieee802.3-podl-pse:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Specifies a reference to a node representing a Power over Data Lines
> +      Power Sourcing Equipment.

Ah, here is the consumer.

Why do you anything more than just a -supply property here for the 
PoE/PoDL supply? The only reason I see is you happen to want a separate 
driver for this and a separate node happens to be a convenient way to 
instantiate drivers in Linux. Convince me otherwise.

Rob