Re: [PATCH 2/3] ARM: dts: imx7: add support for kamstrup flex concentrator

[Fabio Estevam]

Hi Bruno,

On Wed, Jul 15, 2020 at 11:22 AM Bruno Thomsen <bruno.thomsen@xxxxxxxxx> wrote:

> Thanks for the hints.
>
> Yes, the address is correct and configured with external resistors,
> but just realised that I wrote the wrong device name in the comment,
> it's actually KSZ8081RNB.
>
> Ethernet has been working with multiple mainline kernel versions
> (latest being 5.7.8)
> for the last year or so when using the DTS in patch. So I am pretty sure
> hardware and setup of mux is correct'ish.
>
> Kernel trace from patch version:
> kernel: Micrel KSZ8081 or KSZ8091 30be0000.ethernet-1:01: attached PHY driver
>  [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=30be0000.ethernet-1:01, irq=POLL)
>
> Error first occurs when switching from fec phy reset to mdio phy reset
> code path,
> I understand that the fec phy reset is obsolete as phy properties was wrongly
> added to the mac and of course should be part of the phy (separate chip).
>
> When debugging it I end up with the get_phy_device() call not working
> inside of_mdiobus_register_phy().

It would be nice if you could report this to the Ethernet PHY folks at
netdev@xxxxxxxxxxxxxxx