net: sun8i-emac: Add support for fixed-link phy

Make the "phy-handle" property optional, which allows support
for a fixed-link phy configuration.

Thus if the "phy-handle" is present in a DT, then driver will work as
before. Otherwise, phyaddr initialization will not be necessary,
as it is not needed in case of a fixed-link config.

Signed-off-by: Maksim Kiselev <bigunclemax@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c
index a12f7e32e8f23b6c7b6fcc21d741ba1c270e1a45..8bff4fe9a9eafaa8aac917192494dcdb74c02169 100644 (file)
--- a/drivers/net/sun8i_emac.c
+++ b/drivers/net/sun8i_emac.c
@@ -833,11 +833,8 @@ static int sun8i_emac_eth_of_to_plat(struct udevice *dev)
        priv->use_internal_phy = false;
 
        offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "phy-handle");
-       if (offset < 0) {
-               debug("%s: Cannot find PHY address\n", __func__);
-               return -EINVAL;
-       }
-       priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1);
+       if (offset >= 0)
+               priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1);
 
        pdata->phy_interface = dev_read_phy_mode(dev);
        debug("phy interface %d\n", pdata->phy_interface);