Re: [RFC PATCH v2 8/8] net: ethernet: mtk_eth_soc: add paths and SerDes modes for MT7988

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On Wed, Dec 06, 2023 at 06:55:50PM +0000, Russell King (Oracle) wrote:
> On Wed, Dec 06, 2023 at 01:45:17AM +0000, Daniel Golle wrote:
> > @@ -516,6 +538,21 @@ static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config,
> >  	struct mtk_eth *eth = mac->hw;
> >  	unsigned int sid;
> >  
> > +	if (mtk_is_netsys_v3_or_greater(eth)) {
> > +		switch (interface) {
> > +		case PHY_INTERFACE_MODE_1000BASEX:
> > +		case PHY_INTERFACE_MODE_2500BASEX:
> > +		case PHY_INTERFACE_MODE_SGMII:
> > +			return mtk_pcs_lynxi_select_pcs(mac->sgmii_pcs_of_node, interface);
> > +		case PHY_INTERFACE_MODE_5GBASER:
> > +		case PHY_INTERFACE_MODE_10GBASER:
> > +		case PHY_INTERFACE_MODE_USXGMII:
> > +			return mtk_usxgmii_select_pcs(mac->usxgmii_pcs_of_node, interface);
> 
> From what I can see, neither of these two "select_pcs" methods that
> you're calling makes any use of the "interface" you pass to them.
> I'm not sure what they _could_ do with it either, given that what
> you're effectively doing here is getting the phylink_pcs structure from
> the driver, and each one only has a single phylink_pcs.

Yes, you are right, the interface parameter isn't used, I will drop
it from both mtk_*_select_pcs() prototypes.

In the long run we may want something like
struct phylink_pcs *of_pcs_get(struct device_node *np, phy_interface_t interface)
provided by a to-be-built drivers/net/pcs/core.c...




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