linux-kernel - Re: [PATCH net-next V3 3/4] net: lan743x: Migrate phylib to phylink

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Message-ID: <ZqtrcRfRVBR6H9Ri@HYD-DK-UNGSW21.microchip.com>
Date: Thu, 1 Aug 2024 16:33:13 +0530
From: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
CC: Raju Lakkaraju <Raju.Lakkaraju@...rochip.com>, <netdev@...r.kernel.org>,
	<davem@...emloft.net>, <kuba@...nel.org>, <andrew@...n.ch>,
	<horms@...nel.org>, <hkallweit1@...il.com>, <richardcochran@...il.com>,
	<rdunlap@...radead.org>, <Bryan.Whitehead@...rochip.com>,
	<edumazet@...gle.com>, <pabeni@...hat.com>, <linux-kernel@...r.kernel.org>,
	<UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH net-next V3 3/4] net: lan743x: Migrate phylib to phylink

Hi Russell King,

Thank you for review the patches.

The 07/30/2024 15:56, Russell King (Oracle) wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Tue, Jul 30, 2024 at 07:36:18PM +0530, Raju Lakkaraju wrote:
> > +     default:
> > +             __set_bit(PHY_INTERFACE_MODE_RGMII,
> > +                       adapter->phylink_config.supported_interfaces);
> > +             __set_bit(PHY_INTERFACE_MODE_RGMII_ID,
> > +                       adapter->phylink_config.supported_interfaces);
> > +             __set_bit(PHY_INTERFACE_MODE_RGMII_RXID,
> > +                       adapter->phylink_config.supported_interfaces);
> > +             __set_bit(PHY_INTERFACE_MODE_RGMII_TXID,
> > +                       adapter->phylink_config.supported_interfaces);
> 
> There's a shorter way to write this:
> 
>                 phy_interface_set_rgmii(adapter->phylink_config.supported_interfaces);

Ok. I will change.

> 
> > +static int lan743x_phylink_connect(struct lan743x_adapter *adapter)
> > +{
> > +     struct device_node *dn = adapter->pdev->dev.of_node;
> > +     struct net_device *dev = adapter->netdev;
> > +     struct fixed_phy_status fphy_status = {
> > +             .link = 1,
> > +             .speed = SPEED_1000,
> > +             .duplex = DUPLEX_FULL,
> > +     };
> > +     struct phy_device *phydev;
> > +     int ret;
> > +
> > +     if (dn)
> > +             ret = phylink_of_phy_connect(adapter->phylink, dn, 0);
> > +
> > +     if (!dn || (ret && !lan743x_phy_handle_exists(dn))) {
> > +             phydev = phy_find_first(adapter->mdiobus);
> > +             if (!phydev) {
> > +                     if (((adapter->csr.id_rev & ID_REV_ID_MASK_) ==
> > +                           ID_REV_ID_LAN7431_) || adapter->is_pci11x1x) {
> > +                             phydev = fixed_phy_register(PHY_POLL,
> > +                                                         &fphy_status,
> > +                                                         NULL);
> 
> I thought something was going to happen with this?

Our SQA confirmed that it's working ping as expected (i.e Speed at 1Gbps
with full duplex) with Intel I210 NIC as link partner.

Do you suspect any corner case where it's fail?
 
> 
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

-- 
Thanks,                                                                         
Raju