Subject: Re: [PATCH net-next v2 04/10] dt-bindings: net: dsa: nxp,sja1105: improve MDIO bus bindings

From: Rob Herring <[email-masked]>
Date: Mon, 18 Sep 2023 13:22:58 -0500

On Sat, Sep 16, 2023 at 02:08:56PM +0300, Arınç ÜNAL wrote:
> The SJA1110 switch uses the mdios property for its two MDIO buses. Instead
> of a pattern, define two mdio nodes. This ensures the same compatible
> string won't be used twice. The address and size cell definitions can also
> be removed now that the reg property has become unnecessary.
> 
> Move the comment to the description of mdios, mdio0, and mdio1 properties.
> Disallow the mdios property for SJA1105. Require at least one of the MDIO
> buses to be defined to prevent empty mdios child node.

It's an ABI. You can't just change this.

You can split the pattern into 'mdio@0' and 'mdio@1' with different 
compatibles for each if you want.

Rob