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Message-ID: <YYHXcyCOPiUkk8Tz@lunn.ch>
Date: Wed, 3 Nov 2021 01:27:31 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Grygorii Strashko <grygorii.strashko@...com>
Cc: "Russell King (Oracle)" <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
Jakub Kicinski <kuba@...nel.org>,
Heiner Kallweit <hkallweit1@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
linux-kernel@...r.kernel.org, Vignesh Raghavendra <vigneshr@...com>
Subject: Re: [RFC PATCH] net: phy/mdio: enable mmd indirect access through
phy_mii_ioctl()
> > What i find interesting is that you and the other resent requester are
> > using the same user space tool. If you implement C45 over C22 in that
> > tool, you get your solution, and it will work for older kernels as
> > well. Also, given the diverse implementations of this IOTCL, it
> > probably works for more drivers than just those using phy_mii_ioctl().
>
> Do you mean change uapi, like
> add mdio_phy_id_is_c45_over_c22() and
> flag #define MDIO_PHY_ID_C45_OVER_C22 0x4000?
No, i mean user space implements C45 over C22. Make phytool write
MII_MMD_CTRL and MII_MMD_DATA to perform a C45 over C22.
Andrew
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