Re: [PATCH net-next] net: mvpp2: add support for mii

[Maxime Chevallier]

Hello Stefan,

On Thu, 7 Dec 2023 10:01:08 +0100
Stefan Eichenberger <eichest@xxxxxxxxx> wrote:

> Hi Maxime,
> 
> On Wed, Dec 06, 2023 at 06:27:05PM +0100, Maxime Chevallier wrote:
> > > @@ -6973,6 +6988,9 @@ static int mvpp2_port_probe(struct platform_device *pdev,
> > >  				  port->phylink_config.supported_interfaces);
> > >  			__set_bit(PHY_INTERFACE_MODE_SGMII,
> > >  				  port->phylink_config.supported_interfaces);
> > > +		} else if (phy_mode == PHY_INTERFACE_MODE_MII) {
> > > +			__set_bit(PHY_INTERFACE_MODE_100BASEX,
> > > +				  port->phylink_config.supported_interfaces);  
> > 
> > Can you explain that part ? I don't understand why 100BaseX is being
> > reported as a supported mode here. This whole section of the function
> > is about detecting what can be reported based on the presence or not of
> > a comphy driver / hardcoded comphy config. I don't think the comphy
> > here has anything to do with MII / 100BaseX
> > 
> > If 100BaseX can be carried on MII (which I don't know), shouldn't it be
> > reported no matter what ?  
> 
> I missunderstood that part, I thought it is a translation from interface
> type to speed but it is obviously not. I already verfied that everything
> works without this part and will remove it in version 2 of the patch.
> Thanks a lot for the review!

No problem, thanks for the patch :)

Maxime