netdev - Re: [EXT] Re: [PATCH net-next 01/10] net: atlantic: media detect

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Date:   Fri, 17 Jul 2020 10:34:25 +0300
From:   Igor Russkikh <irusskikh@...vell.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     <netdev@...r.kernel.org>, "David S . Miller" <davem@...emloft.net>,
        "Mark Starovoytov" <mstarovoitov@...vell.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [EXT] Re: [PATCH net-next 01/10] net: atlantic: media detect


> 
> Hi Igor
> 
> Can you point to some section of the PHY datasheet? I could not find
> anything which fit the vague description you have of this feature in
> your patch. Maybe Heiner or I can implement and verify the PHY driver
> using this feature.

Will try to findout. Not found in customer datasheets yet.

> Since this feature can be implemented directly in the PHY driver, and
> indirectly via the MAC in firmware, it would be good to have a uniform
> interface to do this. So please do add a PHY tunable via MAC driver.

Yep, had the same thought. Will do.

> Does the MAC also have the ability to configure PHY downshift? You
> could implement that tunable as well.

Right, its also possible and this is what I'm thinking on as well.

This will require a minor change in ethtool infrastructure code to allow
MAC driver to handle phy tunable requests.

Regards,
  Igor