Debugging EcoNet's MT7530 PHYs

Benjamin Larsson b.larsson at gmx.com
Wed Feb 11 12:24:59 PST 2026


Hi.

On 11/02/2026 14:00, Caleb James DeLisle wrote:
>
> Then question is: If we implement a pass-through switch, is that a 
> different driver? I guess it doesn't register as DSA. What is it in 
> the DT? Do we still reset it and tune TRGMII? Would need to copy: 
> mt7530_setup_port6, mt7530_setup_port5, all of the MDIO bus stuff 
> (mt7531_ind_c22_phy_read, mt7531_ind_c22_phy_write), and some of 
> mt7530_setup.

Not sure about the TRGMII part, there I would say copy the vendor driver 
logic that has been stable enough for shipping devices. But a driver for 
the MMIO switch is needed because of the mdio interface.

Maybe different compatible strings for mcm-host mode that only setups up 
the pass-through and mdio? Then the actually used MCM switch should look 
like the mt7621 dts.

MvH

Benjamin Larsson





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