linux-kernel - Re: [PATCH net-next] net: pcs: pcs-lynx: remove lynx_get_mdio

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Message-ID: <20230127134351.xlz4wqrubfnvmecd@skbuf>
Date:   Fri, 27 Jan 2023 15:43:51 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Paolo Abeni <pabeni@...hat.com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Madalin Bucur <madalin.bucur@....com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        UNGLinuxDriver@...rochip.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com
Subject: Re: [PATCH net-next] net: pcs: pcs-lynx: remove
 lynx_get_mdio_device() and refactor cleanup

On Fri, Jan 27, 2023 at 02:40:30PM +0100, Maxime Chevallier wrote:
> One of the main difference is that the TSE pcs is memory-mapped, and
> the merge into pcs-lynx would first require a conversion of pcs-lynx
> to regmap.

I suppose sooner or later you'll want to convert stuff like
phylink_mii_c22_pcs_get_state() to regmap too?

Can't you create an MDIO bus for the TSE PCS which translates MDIO
reads/writes to MMIO accesses?