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-rw-r--r--drivers/net/phy/phy-c45.c8
-rw-r--r--include/linux/phy.h1
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index 077f2929c45e..91e3acb9e397 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -560,6 +560,14 @@ int gen10g_config_aneg(struct phy_device *phydev)
}
EXPORT_SYMBOL_GPL(gen10g_config_aneg);
+int genphy_c45_loopback(struct phy_device *phydev, bool enable)
+{
+ return phy_modify_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1,
+ MDIO_PCS_CTRL1_LOOPBACK,
+ enable ? MDIO_PCS_CTRL1_LOOPBACK : 0);
+}
+EXPORT_SYMBOL_GPL(genphy_c45_loopback);
+
struct phy_driver genphy_c45_driver = {
.phy_id = 0xffffffff,
.phy_id_mask = 0xffffffff,
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 1a12e4436b5b..8e2cf84b2318 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1532,6 +1532,7 @@ int genphy_c45_read_mdix(struct phy_device *phydev);
int genphy_c45_pma_read_abilities(struct phy_device *phydev);
int genphy_c45_read_status(struct phy_device *phydev);
int genphy_c45_config_aneg(struct phy_device *phydev);
+int genphy_c45_loopback(struct phy_device *phydev, bool enable);
/* Generic C45 PHY driver */
extern struct phy_driver genphy_c45_driver;