linux-kernel - Re: [PATCH v4 net-next 5/5] drivers/net/phy: add driver for the onsemi NCN26000 10BASE-T1S PHY

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Message-ID: <Y4+FqsZLBzDzadcC@gvm01>
Date:   Tue, 6 Dec 2022 19:10:50 +0100
From:   Piergiorgio Beruto <piergiorgio.beruto@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, Oleksij Rempel <o.rempel@...gutronix.de>
Subject: Re: [PATCH v4 net-next 5/5] drivers/net/phy: add driver for the
 onsemi NCN26000 10BASE-T1S PHY

On Tue, Dec 06, 2022 at 05:50:13PM +0100, Andrew Lunn wrote:
> > OK, as you see I'm a bit "outdated" :-)
> > What would be the alternative? There is a bunch of vendor-specific PHY
> > features that I would like to expose at some point (e.g. regulation of
> > TX voltage levels). Thanks!
> 
> TX voltages sound like they are board specific, so use DT properties.
> 
> For runtime properties, look at phy tunables.
Ok, but as far as I understand tunables, these need to be "generalized".
I was wondering if there is some interface (sysfs / proc / other) to set
parameters which are very specific to a PHY implementation?

Thanks,
Piergiorgio