netdev - Re: [PATCH 1/3] ARM: dts: imx51: ZII: Add missing phy-mode

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Date:   Mon, 10 Apr 2023 18:24:34 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
Cc:     Andrew Lunn <andrew@...n.ch>, shawnguo@...nel.org,
        s.hauer@...gutronix.de, arm-soc <arm@...nel.org>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/3] ARM: dts: imx51: ZII: Add missing phy-mode

On Mon, Apr 10, 2023 at 11:37:15AM +0100, Russell King (Oracle) wrote:
> It is entirely possible that some are wrong, especially as we don't
> document what the various PHY_INTERFACE_MODE_* mean in the kernel
> (remember that I started doing that).

include/linux/phy.h does give a small hint about what is expected:

 * @PHY_INTERFACE_MODE_REVRMII: Reduced Media Independent Interface in PHY role

and the commit which added that mode does reference, in its description,
the conversation that led to its creation:
https://lore.kernel.org/netdev/20210201214515.cx6ivvme2tlquge2@skbuf/