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From: Andrew Lunn <andrew@lunn.ch>
To: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Russell King <linux@armlinux.org.uk>, Dan Murphy <dmurphy@ti.com>,
	kernel@pengutronix.de, David Jander <david@protonic.nl>,
	Jakub Kicinski <kuba@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Heiner Kallweit <hkallweit1@gmail.com>
Subject: Re: [PATCH net-next v1 1/1] net: phy: dp83td510: Add basic support for the DP83TD510 Ethernet PHY
Date: Mon, 26 Jul 2021 15:23:00 +0200	[thread overview]
Message-ID: <YP63NBaurhQ2Itse@lunn.ch> (raw)
In-Reply-To: <20210726121851.u3flif2opshwgz5e@pengutronix.de>

> With current driver ethtool with show this information:
> Settings for eth1:
> 	Supported ports: [ TP	 MII ]
> 	Supported link modes:   Not reported

Interesting. The default function for getting the PHYs abilities is
doing better than i expected. I was guessing you would see 10BaseT
here.

Given that, what you have is O.K. for the moment. 

> > I suspect you are talking about the PoE aspects. That is outside the
> > scope for phylib. PoE in general is not really supported in the Linux
> > kernel, and probably needs a subsystem of its own.
> 
> No, no. I'm talking about data signals configuration (2.4Vpp/1Vpp), which
> depends on application and cable length. 1Vpp should not be used with
> cable over 200 meter

Should not be used, or is not expected to work very well?

> and 2.4Vpp should not be used on safety critical applications. 

Please work with the other T1L driver writer to propose a suitable way
to configure this. We want all T1L drivers to use the same
configuration method, DT properties etc.

	      Andrew

  reply	other threads:[~2021-07-26 13:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23 10:42 Oleksij Rempel
2021-07-23 13:22 ` Andrew Lunn
2021-07-23 17:08   ` Oleksij Rempel
2021-07-23 18:12     ` Andrew Lunn
2021-07-26 12:18       ` Oleksij Rempel
2021-07-26 13:23         ` Andrew Lunn [this message]
2021-07-27  6:51           ` Oleksij Rempel
2021-07-24  0:56 ` kernel test robot

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