From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Lunn <andrew@lunn.ch>
Subject: Re: [PATCH net-next 2/3] arm64: dts: fsl: ls1028a-rdb: Add ENETC
 external eth ports for the LS1028A RDB board
Date: Thu, 14 Feb 2019 17:27:46 +0100
Message-ID: <20190214162746.GI708@lunn.ch>
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To: Claudiu Manoil <claudiu.manoil@nxp.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "netdev@vger.kernel.org" <netdev@vger.kernel.org>, Alexandru Marginean <alexandru.marginean@nxp.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Leo Li <leoyang.li@nxp.com>, Shawn Guo <shawnguo@kernel.org>, "David S . Miller" <davem@davemloft.net>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>
List-Id: devicetree@vger.kernel.org

> Hi Andrew,
> 
> The extra node for mdio seems to complicate things somewhat. 
> Just adding this node seems not enough.  How to find out easily if a child 
> of a enetc port node is a mdio node?

You copy somebody else code :-)

https://elixir.bootlin.com/linux/v5.0-rc6/source/drivers/net/dsa/mv88e6xxx/chip.c#L2765

	Andrew