From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Lunn <andrew@lunn.ch>
Subject: Re: [PATCH v2 3/3] arm64: dts: marvell: Add ethernet switch
 definition for the ESPRESSObin
Date: Tue, 20 Dec 2016 17:17:14 +0100
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> >>+		mdio {
> >>+			#address-cells = <1>;
> >>+			#size-cells = <0>;
> >>+			reg = <1>;
> >
> >what is this reg value for?
> >
> >     Andrew
> >
> 
> It was required to avoid a warning thrown by the mdio subsystem

Do you remember what the warning was?

This seems odd to me. I don't see why a reg is needed here.

Thanks
	Andrew