linux-kernel - Re: [RFC net-next PATCH 07/16] net: phylink: Add helpers for c22 registers without MDIO

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Message-ID: <YXKvmwwUNnIlROsv@shell.armlinux.org.uk>
Date:   Fri, 22 Oct 2021 13:33:31 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Sean Anderson <sean.anderson@...o.com>
Cc:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [RFC net-next PATCH 07/16] net: phylink: Add helpers for c22
 registers without MDIO

On Mon, Oct 04, 2021 at 03:15:18PM -0400, Sean Anderson wrote:
> Some devices expose memory-mapped c22-compliant PHYs. Because these
> devices do not have an MDIO bus, we cannot use the existing helpers.
> Refactor the existing helpers to allow supplying the values for c22
> registers directly, instead of using MDIO to access them. Only get_state
> and set_adversisement are converted, since they contain the most complex
> logic.

I think this patch is useful on its own, there are certainly cases
where being able to hold the MII bus lock while reading the BMSR/LPA
registers would be advantageous. Please can you update the patch
against net-next and submit it?

Thanks.

-- 
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