linux-kernel - Re: [PATCH net-next 2/2] net: phy: dp83td510: Add support for the DP83TD510 Ethernet PHY

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Message-ID: <20201019215506.GY139700@lunn.ch>
Date:   Mon, 19 Oct 2020 23:55:06 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Dan Murphy <dmurphy@...com>
Cc:     davem@...emloft.net, f.fainelli@...il.com, hkallweit1@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: phy: dp83td510: Add support for the
 DP83TD510 Ethernet PHY

On Mon, Oct 19, 2020 at 04:33:18PM -0500, Dan Murphy wrote:
> Andrew
> 
> On 10/16/20 5:02 PM, Andrew Lunn wrote:
> > On Thu, Oct 08, 2020 at 11:23:47AM -0500, Dan Murphy wrote:
> > > The DP83TD510E is an ultra-low power Ethernet physical layer transceiver
> > > that supports 10M single pair cable.
> > Hi Dan
> > 
> > I think you are going to have to add
> > ETHTOOL_LINK_MODE_10baseT1_Full_BIT? We already have 100T1 and 1000T1,
> > but not 10T1 :-(
> 
> The data sheet says 10baseT1L.  Which is not there either and seems to be
> the latest 802.3cg spec and has a greater max distance and used for IoT and
> Automotive.

Hi Dan

Do you know anything about interropibility? Can a T1 and a T1L talk to
each other, if suitably close? I'm wondering if this device should say
it is both T1 and T1L? Or just T1L?

   Andrew