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Date:   Tue, 12 May 2020 07:13:55 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Christian Herber <christian.herber@....com>,
        Michal Kubecek <mkubecek@...e.cz>, Marek Vasut <marex@...x.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jonathan Corbet <corbet@....net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        "mkl@...gutronix.de" <mkl@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        David Jander <david@...tonic.nl>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: Re: signal quality and cable diagnostic

On Mon, May 11, 2020 at 09:54:35PM +0200, Andrew Lunn wrote:
> On Mon, May 11, 2020 at 07:32:05PM +0000, Christian Herber wrote:
> > On May 11, 2020 4:33:53 PM Andrew Lunn <andrew@...n.ch> wrote:
> > >
> > > Are the classes part of the Open Alliance specification? Ideally we
> > > want to report something standardized, not something proprietary to
> > > NXP.
> > >
> > >        Andrew
> > 
> > Hi Andrew,
> > 
> 
> > Such mechanisms are standardized and supported by pretty much all
> > devices in the market. The Open Alliance specification is publicly
> > available here:
> > http://www.opensig.org/download/document/218/Advanced_PHY_features_for_automotive_Ethernet_V1.0.pdf
> > 
> > As the specification is newer than the 100BASE-T1 spec, do not
> > expect first generation devices to follow the register definitions
> > as per Open Alliance. But for future devices, also registers should
> > be same across different vendors.
> 
> Hi Christian
> 
> Since we are talking about a kernel/user API definition here, i don't
> care about the exact registers. What is important is the
> naming/representation of the information. It seems like NXP uses Class
> A - Class H, where as the standard calls them SQI=0 - SQI=7. So we
> should name the KAPI based on the standard, not what NXP calls them.

OK, sounds good for me.

Regards,
Oleksij

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