netdev - Re: [PATCH net 1/2] net: phy: Use C45 Helpers in phy_read

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Date:   Sat, 2 Mar 2019 15:11:56 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Jose Abreu <jose.abreu@...opsys.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Joao Pinto <joao.pinto@...opsys.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH net 1/2] net: phy: Use C45 Helpers in phy_read_status()

On Fri, Mar 01, 2019 at 07:14:20PM -0800, Florian Fainelli wrote:
> 
> 
> On 3/1/2019 2:54 AM, Jose Abreu wrote:
> > Currently phy_read_status() considers that either the PHY driver has the
> > read_status() callback or uses the generic callback.
> > 
> > For C45 PHYs we need to use the gen10g_read_status() callback.
> 
> Right, so we could expect your C45 PHY driver to assign the read_status
> callback to gen10g_read_status() if it is appropriate. So far most of
> the 10g PHY drivers (cortina, marvell10g, aquantia) have to define their
> own read_status() callback to be feature complete. Unlike C22 PHYs that
> can really be driven with a simple generic PHY driver model for standard
> features, C45 PHYs seem to be quirky enough this does not work anymore.

Hi Jose

Does your PHY support 1000Base-T? If so you need read_status() because
the registers for that link mode don't appear to be standardized.

    Andrew