--- zzzz-none-000/linux-5.4.213/drivers/net/phy/mdio-gpio.c	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/drivers/net/phy/mdio-gpio.c	2024-05-29 11:19:55.000000000 +0000
@@ -32,6 +32,11 @@
 	struct gpio_desc *mdc, *mdio, *mdo;
 };
 
+#if IS_ENABLED(CONFIG_MDIO_QCA)
+extern int qca_phy_reset(struct platform_device *pdev);
+extern void qca_mht_preinit(struct mii_bus *mii_bus);
+#endif
+
 static int mdio_gpio_get_data(struct device *dev,
 			      struct mdio_gpio_info *bitbang)
 {
@@ -114,6 +119,9 @@
 	struct mii_bus *new_bus;
 
 	bitbang->ctrl.ops = &mdio_gpio_ops;
+#if IS_ENABLED(CONFIG_MDIO_QCA)
+	bitbang->ctrl.preinit = qca_mht_preinit;
+#endif
 
 	new_bus = alloc_mdio_bitbang(&bitbang->ctrl);
 	if (!new_bus)
@@ -180,6 +188,16 @@
 	if (!new_bus)
 		return -ENODEV;
 
+#if IS_ENABLED(CONFIG_MDIO_QCA)
+	ret = qca_phy_reset(pdev);
+	if (ret) {
+		dev_warn(&pdev->dev, "failed to reset PHY by GPIO\n");
+		return ret;
+	}
+
+	bitbang->ctrl.preinit(new_bus);
+#endif
+
 	ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
 	if (ret)
 		mdio_gpio_bus_deinit(&pdev->dev);