net: phy: gmii2rgmii: Support external rgmii-id phy

Read the phy mode of the external phy from the device tree if available
and check that it is a RGMII variant.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>

diff --git a/drivers/net/phy/xilinx_gmii2rgmii.c b/drivers/net/phy/xilinx_gmii2rgmii.c
index 0b7436a7e1e9a81d81902f50ba497c18d753c2b1..e2969bc48424fbf0fa3e90ae42514429f34db6e4 100644 (file)
--- a/drivers/net/phy/xilinx_gmii2rgmii.c
+++ b/drivers/net/phy/xilinx_gmii2rgmii.c
@@ -48,7 +48,14 @@ static int xilinxgmiitorgmii_config(struct phy_device *phydev)
                return -EINVAL;
        }
 
-       ext_phydev->interface = PHY_INTERFACE_MODE_RGMII;
+       ext_phydev->interface = ofnode_read_phy_mode(node);
+       if (ext_phydev->interface == PHY_INTERFACE_MODE_NA) {
+               ext_phydev->interface = PHY_INTERFACE_MODE_RGMII;
+       } else if (!phy_interface_is_rgmii(ext_phydev)) {
+               printf("Incorrect external interface type\n");
+               return -EINVAL;
+       }
+
        ext_phydev->node = phandle.node;
        phydev->priv = ext_phydev;