netdev - Re: [PATCHv3 1/3] dt-bindings: net: Add DT bindings for Socionext Netsec

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Date:   Thu, 21 Dec 2017 14:55:41 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     jassisinghbrar@...il.com
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        davem@...emloft.net, arnd.bergmann@...aro.org,
        ard.biesheuvel@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, masami.hiramatsu@...aro.org,
        Jassi Brar <jaswinder.singh@...aro.org>
Subject: Re: [PATCHv3 1/3] dt-bindings: net: Add DT bindings for Socionext
 Netsec

> +- mdio device tree subnode: When the Netsec has a phy connected to its local
> +		mdio, there must be device tree subnode with the following
> +		required properties:
> +
> +	- compatible: Must be "socionext,snq-mdio".

Is there a need for a compatible string? Is there different versions
of the MDIO bus hardware? If it was an independent MDIO bus driver,
then yes, you need a compatible string. But since it is embedded in
the MAC driver, there should not be a need.

    Andrew