Re: [net-next v5 1/3] dt-bindings: net: dsa: yt921x: Add Motorcomm YT921x switch support

[Yangfl]

On Thu, Aug 21, 2025 at 8:41 PM Andrew Lunn <andrew@xxxxxxx> wrote:
>
> > +        switch@1d {
> > +            compatible = "motorcomm,yt9215";
> > +            /* default 0x1d, alternate 0x0 */
> > +            reg = <0x1d>;
>
> Just curious, what does alternative 0x0 mean? Does this switch have
> only one strapping pin for address, so it either uses address 0x1d or
> 0x0?
>
>         Andrew

Yes. I've seen this approach on other chips (offering two MDIO
phyaddrs), so this should be a common practice.