On Tue, Aug 11, 2020 at 12:06:41AM +0200, Marek Behún wrote:
> Hi Russell,
> 
> this series should apply on linux-arm git repository, on branch
> clearfog.

How about something like this - only build tested, and you may
encounter fuzz with this:

diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c
index 147b4cf4188e..bcbef68e0917 100644
--- a/drivers/net/phy/marvell10g.c
+++ b/drivers/net/phy/marvell10g.c
@@ -117,6 +117,7 @@ enum {
        MV_V2_PORT_CTRL_FT_1000BASEX = 0 << 3,
        MV_V2_PORT_CTRL_FT_SGMII = 1 << 3,
        MV_V2_PORT_CTRL_FT_10GBASER = 3 << 3,
+       MV_V2_PORT_CTRL_MACTYPE = 7 << 0,
        MV_V2_UIS               = 0xf040,
        MV_V2_PIS               = 0xf042,
        MV_V2_PIS_PI            = BIT(0),
@@ -691,17 +692,44 @@ static bool mv3310_has_pma_ngbaset_quirk(struct 
phy_device *phydev)
                MV_PHY_ALASKA_NBT_QUIRK_MASK) == MV_PHY_ALASKA_NBT_QUIRK_REV;
 }
 
+static int mv3310_select_mode(struct phy_device *phydev,
+                             unsigned long *host_interfaces)
+{
+       int mac_type = -1;
+
+       if (test_bit(PHY_INTERFACE_MODE_USXGMII, host_interfaces))
+               mac_type = 7;
+       else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces) &&
+                test_bit(PHY_INTERFACE_MODE_10GBASER, host_interfaces))
+               mac_type = 4;
+       else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces) &&
+                test_bit(PHY_INTERFACE_MODE_RXAUI, host_interfaces))
+               mac_type = 0;
+       else if (test_bit(PHY_INTERFACE_MODE_10GBASER, host_interfaces))
+               mac_type = 6;
+       else if (test_bit(PHY_INTERFACE_MODE_RXAUI, host_interfaces))
+               mac_type = 2;
+       else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces))
+               mac_type = 4;
+
+       return mac_type;
+}
+
 static int mv3310_config_init(struct phy_device *phydev)
 {
-       int err;
+       int ret, err, mac_type = -1;
 
        /* Check that the PHY interface type is compatible */
-       if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
-           phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
-           phydev->interface != PHY_INTERFACE_MODE_XAUI &&
-           phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
-           phydev->interface != PHY_INTERFACE_MODE_10GBASER)
+       if (!phy_interface_empty(phydev->host_interfaces)) {
+               mac_type = mv3310_select_mode(phydev, phydev->host_interfaces);
+               phydev_info(phydev, "mac_type=%d\n", mac_type);
+       } else if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
+                  phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
+                  phydev->interface != PHY_INTERFACE_MODE_XAUI &&
+                  phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
+                  phydev->interface != PHY_INTERFACE_MODE_10GBASER) {
                return -ENODEV;
+       }
 
        phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
 
@@ -710,6 +738,20 @@ static int mv3310_config_init(struct phy_device *phydev)
        if (err)
                return err;
 
+       if (mac_type != -1) {
+               ret = phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2,
+                                            MV_V2_PORT_CTRL,
+                                            MV_V2_PORT_CTRL_MACTYPE, mac_type);
+               if (ret > 0)
+                       ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2,
+                                            MV_V2_PORT_CTRL,
+                                            MV_V2_PORT_CTRL_SWRST,
+                                            MV_V2_PORT_CTRL_SWRST);
+
+               if (ret < 0)
+                       return ret;
+       }
+
        /* Enable EDPD mode - saving 600mW */
        err = mv3310_set_edpd(phydev, ETHTOOL_PHY_EDPD_DFLT_TX_MSECS);
        if (err)
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 5785eb040f11..4ad64973432a 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -2082,6 +2082,8 @@ static void phylink_sfp_detach(void *upstream, struct 
sfp_bus *bus)
        sfp_bus_unlink_netdev(bus, pl->netdev);
 }
 
+static DECLARE_PHY_INTERFACE_MASK(phylink_sfp_interfaces);
+
 static const phy_interface_t phylink_sfp_interface_preference[] = {
        PHY_INTERFACE_MODE_USXGMII,
        PHY_INTERFACE_MODE_10GBASER,
@@ -2091,6 +2093,18 @@ static const phy_interface_t 
phylink_sfp_interface_preference[] = {
        PHY_INTERFACE_MODE_1000BASEX,
 };
 
+static int __init phylink_init(void)
+{
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(phylink_sfp_interface_preference); i++)
+               set_bit(phylink_sfp_interface_preference[i],
+                       phylink_sfp_interfaces);
+
+       return 0;
+}
+module_init(phylink_init);
+
 static phy_interface_t phylink_select_interface(struct phylink *pl,
                                                const unsigned long *intf,
                                                const char *intf_name)
@@ -2342,6 +2356,10 @@ static int phylink_sfp_connect_phy(void *upstream, 
struct phy_device *phy)
        else
                mode = MLO_AN_INBAND;
 
+       /* Set the PHY's host supported interfaces */
+       phy_interface_and(phy->host_interfaces, phylink_sfp_interfaces,
+                         pl->config->supported_interfaces);
+
        if (!phy_interface_empty(phy->supported_interfaces) &&
            !phy_interface_empty(pl->config->supported_interfaces)) {
                interface = phylink_select_interface(pl,
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 7408e2240c1e..14f73378f4e9 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -527,6 +527,7 @@ struct phy_device {
 
        /* bitmap of supported interfaces */
        DECLARE_PHY_INTERFACE_MASK(supported_interfaces);
+       DECLARE_PHY_INTERFACE_MASK(host_interfaces);
 
        /* Energy efficient ethernet modes which should be prohibited */
        u32 eee_broken_modes;

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

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