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Date:   Sat, 20 Aug 2022 14:10:04 +0200
From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     Andrew Lunn <andrew@lunn.ch>
Cc:     Heiner Kallweit <hkallweit1@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Russell King <linux@armlinux.org.uk>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Jonathan Corbet <corbet@lwn.net>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
        David Jander <david@protonic.nl>
Subject: Re: [PATCH net-next v1 4/7] net: pse-pd: add generic PSE driver
Message-ID: <20220820121004.GG10138@pengutronix.de>
References: <20220819120109.3857571-1-o.rempel@pengutronix.de>
 <20220819120109.3857571-5-o.rempel@pengutronix.de>
 <YwABUCYRRiCns3bO@lunn.ch>
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On Fri, Aug 19, 2022 at 11:32:00PM +0200, Andrew Lunn wrote:
> On Fri, Aug 19, 2022 at 02:01:06PM +0200, Oleksij Rempel wrote:
> > Add generic driver to support simple Power Sourcing Equipment without
> > automatic classification support.
> > 
> > This driver was tested on 10Bast-T1L switch with regulator based PoDL PSE.
> 
> Do you have access to a PHY which implements clause 45.2.9? That seems
> like a better reference implementation?

Suddenly I do not have access to any of them. 

> I don't know the market, what is more likely, a simple regulator, or
> something more capable with an interface like 45.2.9?

So far I was not able to find any PoDL PES IC (with classification
support). Or PHY with PoDL PSE on one package. If some one know any,
please let me know.

> netlink does allow us to keep adding more attributes, so we don't need
> to be perfect first time, but it seems like 45.2.9 is what IEEE expect
> vendors to provide, so at some point Linux should implement it.

ack.

Regards,
Oleksij
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