Subject: Re: [PATCH net-next 09/12] ARM: dts: r9a06g032: describe MII converter

From: Clément Léger <[email-masked]>
Date: Fri, 15 Apr 2022 18:45:41 +0200

Le Fri, 15 Apr 2022 18:19:46 +0200,
Andrew Lunn <[email-masked]> a écrit :

> > I think it would be good to modify it like this:
> > 
> > eth-miic@44030000 {
> >     ...
> >   converters {
> >     mii_conv0: mii-conv@0 {
> >       // Even if useless, maybe keeping it for the sake of coherency
> >       renesas,miic-input = <MIIC_GMAC1>;
> >       reg = <0>;
> >     };  
> 
> This is not a 'bus', so using reg, and @0, etc is i think wrong.  You
> just have a collection of properties.

Agreed, but this is the same thing that is done for DSA ports (at least
I think). It uses reg which describe the port number, this is not a
real bus per se, it only refer to port indices.

But if you think this should not be done like this, what do you propose
then ? These nodes are also reference from "pcs-handle" properties in
switch to retrieve the PCS. Would you suggest using something like
pcs-handle = <&eth_miic port_index> and remove the nodes then ?

Thanks,

-- 
Clément Léger,
Embedded Linux and Kernel engineer at Bootlin
https://bootlin.com