+ * @phydev: target phy_device struct
+ */
+int genphy_c45_write_eee_adv(struct phy_device *phydev, unsigned long *adv)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
+	int val, changed;
+
+	linkmode_and(common, phydev->supported_eee, PHY_EEE_100_10000_FEATURES);
+	if (!linkmode_empty(common)) {
+		val = linkmode_adv_to_mii_eee_100_10000_adv_t(adv);
+
+		/* In eee_broken_modes are stored MDIO_AN_EEE_ADV specific raw
+		 * register values.
+		 */
+		val &= ~phydev->eee_broken_modes;
+
+		val = phy_modify_mmd_changed(phydev, MDIO_MMD_AN,
+					     MDIO_AN_EEE_ADV,
+					     MDIO_EEE_100TX | MDIO_EEE_1000T |
+					     MDIO_EEE_10GT | MDIO_EEE_1000KX |
+					     MDIO_EEE_10GKX4 | MDIO_EEE_10GKR,
+					     val);
+		if (val < 0)
+			return val;
+		if (val > 0)
+			changed = 1;
+	}
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
+			      phydev->supported_eee)) {
+		val = linkmode_adv_to_mii_10base_t1_t(adv);
+
+		val = phy_modify_mmd_changed(phydev, MDIO_MMD_AN,
+					     MDIO_AN_10BT1_AN_CTRL,
+					     MDIO_AN_10BT1_AN_CTRL_ADV_EEE_T1L,
+					     val);
+		if (val < 0)
+			return val;
+		if (val > 0)
+			changed = 1;
+	}
+
+	return changed;
+}
+
+/**
+ * genphy_c45_read_eee_adv - read advertised EEE link modes
+ * @phydev: target phy_device struct
+ */
+static int genphy_c45_read_eee_adv(struct phy_device *phydev,
+				   unsigned long *adv)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
+	int val;
+
+	linkmode_and(common, phydev->supported_eee, PHY_EEE_100_10000_FEATURES);
+	if (!linkmode_empty(common)) {
+		/* IEEE 802.3-2018 45.2.7.13 EEE advertisement 1
+		 * (Register 7.60)
+		 */
+		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
+		if (val < 0)
+			return val;
+
+		mii_eee_100_10000_adv_mod_linkmode_t(adv, val);
+	}
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
+			      phydev->supported_eee)) {
+		/* IEEE 802.3cg-2019 45.2.7.25 10BASE-T1 AN control register
+		 * (Register 7.526)
+		 */
+		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10BT1_AN_CTRL);
+		if (val < 0)
+			return val;
+
+		mii_10base_t1_adv_mod_linkmode_t(adv, val);
+	}
+
+	return 0;
+}
+
+/**
+ * genphy_c45_read_eee_lpa - read advertised LP EEE link modes
+ * @phydev: target phy_device struct
+ */
+static int genphy_c45_read_eee_lpa(struct phy_device *phydev,
+				   unsigned long *lpa)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
+	int val;
+
+	linkmode_and(common, phydev->supported_eee, PHY_EEE_100_10000_FEATURES);
+	if (!linkmode_empty(common)) {
+		/* IEEE 802.3-2018 45.2.7.14 EEE link partner ability 1
+		 * (Register 7.61)
+		 */
+		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
+		if (val < 0)
+			return val;
+
+		mii_eee_100_10000_adv_mod_linkmode_t(lpa, val);
+	}
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
+			      phydev->supported_eee)) {
+		/* IEEE 802.3cg-2019 45.2.7.26 10BASE-T1 AN status register
+		 * (Register 7.527)
+		 */
+		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10BT1_AN_STAT);
+		if (val < 0)
+			return val;
+
+		mii_10base_t1_adv_mod_linkmode_t(lpa, val);
+	}
+
+	return 0;
+}
+
 /**
  * genphy_c45_read_eee_abilities - read supported EEE link modes
  * @phydev: target phy_device struct

@@ -1173,6 +1294,80 @@ int genphy_c45_plca_get_status(struct phy_device *phydev,
 }
 EXPORT_SYMBOL_GPL(genphy_c45_plca_get_status);
 
+/**
+ * genphy_c45_ethtool_get_eee - get EEE supported and status
+ * @phydev: target phy_device struct
+ * @data: ethtool_eee data
+ *
+ * Description: it reportes the Supported/Advertisement/LP Advertisement
+ * capabilities.
+ */
+int genphy_c45_ethtool_get_eee(struct phy_device *phydev,
+			       struct ethtool_eee *data)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv) = {};
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(lp) = {};
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
+	int ret;
+
+	ret = genphy_c45_read_eee_adv(phydev, adv);
+	if (ret)
+		return ret;
+
+	ret = genphy_c45_read_eee_lpa(phydev, lp);
+	if (ret)
+		return ret;
+
+	data->eee_enabled = !linkmode_empty(adv);
+	linkmode_and(common, adv, lp);
+	if (data->eee_enabled && !linkmode_empty(common))
+		data->eee_active = phy_check_valid(phydev->speed,
+						   phydev->duplex, common);
+	else
+		data->eee_active = false;
+
+	/* FIXME: EEE ethtool interface currently do not support full set of
+	 * possible EEE link modes.
+	 */
+	data->supported = phydev->supported_eee[0];
+	data->advertised = adv[0];
+	data->lp_advertised = lp[0];
+
+	return 0;
+}
+EXPORT_SYMBOL(genphy_c45_ethtool_get_eee);
+
+/**
+ * genphy_c45_ethtool_set_eee - get EEE supported and status
+ * @phydev: target phy_device struct
+ * @data: ethtool_eee data
+ *
+ * Description: it reportes the Supported/Advertisement/LP Advertisement
+ * capabilities.
+ */
+int genphy_c45_ethtool_set_eee(struct phy_device *phydev,
+			       struct ethtool_eee *data)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv) = {};
+	int ret;
+
+	if (data->eee_enabled) {
+		if (data->advertised)
+			adv[0] = data->advertised;
+		else
+			linkmode_copy(adv, phydev->supported_eee);
+	}
+
+	ret = genphy_c45_write_eee_adv(phydev, adv);
+	if (ret < 0)
+		return ret;
+	if (ret > 0)
+		return phy_restart_aneg(phydev);
+
+	return 0;
+}
+EXPORT_SYMBOL(genphy_c45_ethtool_set_eee);
+
 struct phy_driver genphy_c45_driver = {
 	.phy_id         = 0xffffffff,
 	.phy_id_mask    = 0xffffffff,

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index ea4f7d08d1a6..231cf02671a7 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h

@@ -427,6 +427,42 @@ static inline void mii_eee_100_10000_adv_mod_linkmode_t(unsigned long *adv,
 			 adv, val & MDIO_EEE_10GKR);
 }
 
+static inline u32 linkmode_adv_to_mii_eee_100_10000_adv_t(unsigned long *adv)
+{
+	u32 result = 0;
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, adv))
+		result |= MDIO_EEE_100TX;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, adv))
+		result |= MDIO_EEE_1000T;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, adv))
+		result |= MDIO_EEE_10GT;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, adv))
+		result |= MDIO_EEE_1000KX;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, adv))
+		result |= MDIO_EEE_10GKX4;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, adv))
+		result |= MDIO_EEE_10GKR;
+
+	return result;