Re: [PATCH net-next 1/2] dt-bindings: net: econet: add EN751221 ethernet

[Caleb James DeLisle <cjd@cjdns.fr>]

On 10/09/2026 04:11, Andrew Lunn wrote:
>> +        gmac1: mac@1 {
>> +          compatible = "econet,eth-mac";
>> +          reg = <1>;
>> +          status = "disabled";
>> +          phy-mode = "rgmii-rxid";
> That is a very unusual phy-mode. Is there a reason this is used in the
> example?


Mac 1 connects to an xPON or xDSL subsystem depending on chip package. 
The phy-mode is not used by the driver and when the driver was written 6 
months ago this was the best guess about the electrical protocol, left 
for documentation purposes.

Your question made me re-investigate this, and I now note that both the 
xPON and xDSL "upper halves" as well as the switch on gmac0 are all 
on-die, so I think phy-mode = "internal" is more appropriate and I will 
re-send as such, and with some light documentation about what this 
ethernet connects to - since it's on the die so it'll always be the same.


Thanks,

Caleb


>
> 	Andrew