@@ -567,6 +567,7 @@ static int at803x_probe(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
struct at803x_priv *priv;
+ int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -574,7 +575,20 @@ static int at803x_probe(struct phy_device *phydev)
phydev->priv = priv;
- return at803x_parse_dt(phydev);
+ ret = at803x_parse_dt(phydev);
+ if (ret)
+ return ret;
+
+ /* Some bootloaders leave the fiber page selected.
+ * Switch to the copper page, as otherwise we read
+ * the PHY capabilities from the fiber side.
+ */
+ if (at803x_match_phy_id(phydev, ATH8031_PHY_ID)) {
+ ret = phy_select_page(phydev, AT803X_PAGE_COPPER);
+ ret = phy_restore_page(phydev, AT803X_PAGE_COPPER, ret);
+ }
+
+ return ret;
}
static void at803x_remove(struct phy_device *phydev)
The Atheros AR8031 and AR8033 expose different registers for SGMII/Fiber as well as the copper side of the PHY depending on the BT_BX_REG_SEL bit in the chip configure register. The driver assumes the copper side is selected on probe, but this might not be the case depending which page was last selected by the bootloader. Notably, Ubiquiti UniFi bootloaders show this behavior. Select the copper page when probing to circumvent this. Signed-off-by: David Bauer <mail@david-bauer.net> --- drivers/net/phy/at803x.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)