netdev - Re: [PATCH v2 3/3] arm64: dts: marvell: Add ethernet switch definition for the ESPRESSObin

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Date:   Tue, 20 Dec 2016 16:42:34 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Romain Perier <romain.perier@...e-electrons.com>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jason Cooper <jason@...edaemon.net>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory Clement <gregory.clement@...e-electrons.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Ian Campbell <ijc+devicetree@...lion.org.uk>,
        Pawel Moll <pawel.moll@....com>,
        Mark Rutland <mark.rutland@....com>,
        Kumar Gala <galak@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Nadav Haklai <nadavh@...vell.com>
Subject: Re: [PATCH v2 3/3] arm64: dts: marvell: Add ethernet switch
 definition for the ESPRESSObin

> +&mdio {
> +	switch0: switch0@0 {
> +		compatible = "marvell,mv88e6085";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = <1>;

Ah, sorry, missed this last time. reg = <1>, that means switch0@1.
That is a general rule for all device tree bindings.

> +		mdio {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <1>;

what is this reg value for?

     Andrew