netdev - Re: [PATCH, net] phy: aquantia: Fix AN when higher speeds than 1G are not advertised

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Date:   Sun, 12 Jun 2022 23:25:07 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Claudiu Manoil <claudiu.manoil@....com>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Ondrej Spacek <ondrej.spacek@....com>
Subject: Re: [PATCH, net] phy: aquantia: Fix AN when higher speeds than 1G
 are not advertised

> I understand the situation is not ideal. What I could do is to provide some
> logs showing that writing the correct configuration to 7.20h does not yield
> the desired result, to have some sort of detailed evidence about the issue.
> But I cannot do that until Tuesday at the earliest.
> As for documentation, there's an App Note about configuring advertising
> via the vendor specific 0xC400 reg but I don't think it's public. Not sure if
> we can use that.
> Meanwhile, it would be great if you or someone else could confirm the
> issue on a different platform.

I don't have any boards with these PHYs.

If there is a vendor document saying it has to be configured via
vendor registers, thats enough for me. But should the generic code be
removed, are those bits documented as reserved?

	 Andrew