Re: [PATCH] add virtual PHY for PHY-less devices

[Florian Fainelli]

On 9/17/2020 2:40 PM, Sergej Bauer wrote:
> From: sbauer@xxxxxxxxxxx
>
>      Here is a kernel related part of my work which was helps to develop brand
> new PHY device.
>
>      It is migth be helpful for developers work with PHY-less lan743x
> (7431:0011 in my case). It's just a fake virtual PHY which can change speed of
> network card processing as a loopback device. Baud rate can be tuned with
> ethtool from command line or by means of SIOCSMIIREG ioctl. Duplex mode not
> configurable and it's allways DUPLEX_FULL.
>
>      It also provides module parameter mii_regs for setting initial values of
> IEEE 802.3 Control Register.

You appear to have re-implemented the fixed PHY driver, please use that 
instead of rolling your own.
--
Florian