Subject: Re: [PATCH net-next 2/3] arm64: dts: fsl: ls1028a-rdb: Add ENETC external eth ports for the LS1028A RDB board

From: Andrew Lunn <[email-masked]>
Date: Thu, 14 Feb 2019 17:27:46 +0100

> 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