Re: [PATCH 2/4] dt-bindings: net: dsa: document internal MDIO bus

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On Sun, Aug 13, 2023 at 03:59:11PM +0300, Arınç ÜNAL wrote:
> > sja1105 does not support an "mdio" child property. I haven't checked the
> > others. Don't add properties that aren't supported.
> 
> Adding the mdio property to the dsa.yaml schema will allow it on all of the
> schemas that refer to dsa.yaml such as this one. This addition here is only
> to disallow additional properties under the mdio property for this specific
> schema.
> 
> That said, my understanding is that the internal MDIO bus exists on all of
> the switches controlled by DSA.

How come?

> Whether each individual DSA subdriver supports registering it does not
> matter in terms of documenting the internal MDIO bus for all DSA
> switches.
> 
> SJA1110 uses the mdios property instead because it's got two internal mdio
> buses, which is why I invalidate the mdio property for it. If SJA1105 has
> also got two internal mdio buses, let me know.

SJA1105 has zero internal MDIO buses and zero internal PHYs.



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