netdev - Re: [PATCH v5 02/14] net: pch_gbe: Pull PHY GPIO handling out of Minnow code

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Message-ID: <20180217222933.GB21315@lunn.ch>
Date:   Sat, 17 Feb 2018 23:29:33 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Paul Burton <paul.burton@...s.com>
Cc:     netdev@...r.kernel.org, Hassan Naveed <hassan.naveed@...s.com>,
        Matt Redfearn <matt.redfearn@...s.com>,
        "David S . Miller" <davem@...emloft.net>, linux-mips@...ux-mips.org
Subject: Re: [PATCH v5 02/14] net: pch_gbe: Pull PHY GPIO handling out of
 Minnow code

On Sat, Feb 17, 2018 at 12:10:25PM -0800, Paul Burton wrote:
> The MIPS Boston development board uses the Intel EG20T Platform
> Controller Hub, including its gigabit ethernet controller, and requires
> that its RTL8211E PHY be reset much like the Minnow platform. Pull the
> PHY reset GPIO handling out of Minnow-specific code such that it can be
> shared by later patches.

Hi Paul

I'm i right in saying the driver currently supports the Atheros AT8031
PHY? The same phy which is supported in drivers/net/phy/at803x.c?

If so, i think you are doing this all wrong. You would be much better
off throwing away pch_gbe_phy.c and write a proper MDIO driver. You
then get the PHY driver for free, and the MDIO code could will handle
your GPIO for you, in the standardised way.

     Andrew