diff --git a/target/linux/mediatek/files-5.4/drivers/net/phy/gpy211.c b/target/linux/mediatek/files-5.4/drivers/net/phy/gpy211.c
new file mode 100644
index 0000000..4ac83b3
--- /dev/null
+++ b/target/linux/mediatek/files-5.4/drivers/net/phy/gpy211.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+
+static int gpy211_phy_config_init(struct phy_device *phydev)
+{
+	return 0;
+}
+
+int gpy211_phy_probe(struct phy_device *phydev)
+{
+	int sgmii_reg = phy_read_mmd(phydev, MDIO_MMD_VEND1, 8);
+
+	/* enable 2.5G SGMII rate adaption */
+	phy_write_mmd(phydev, MDIO_MMD_VEND1, 8, 0x24e2);
+
+	return 0;
+}
+
+static int gpy211_get_features(struct phy_device *phydev)
+{
+	int ret;
+
+	ret = genphy_read_abilities(phydev);
+	if (ret)
+		return ret;
+
+	/* GPY211 with rate adaption supports 100M/1G/2.5G speed. */
+	linkmode_clear_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
+			   phydev->supported);
+	linkmode_clear_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
+			   phydev->supported);
+	linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
+			 phydev->supported);
+
+	return 0;
+}
+
+static struct phy_driver gpy211_phy_driver[] = {
+	{
+		PHY_ID_MATCH_MODEL(0x67c9de0a),
+		.name		= "Intel GPY211 PHY",
+		.config_init	= gpy211_phy_config_init,
+		.probe		= gpy211_phy_probe,
+		.get_features	= gpy211_get_features,
+	}
+};
+
+module_phy_driver(gpy211_phy_driver);
+
+static struct mdio_device_id __maybe_unused gpy211_phy_tbl[] = {
+	{ PHY_ID_MATCH_VENDOR(0x67c9de00) },
+	{ }
+};
+
+MODULE_DESCRIPTION("Intel GPY211 PHY driver with rate adaption");
+MODULE_AUTHOR("Landen Chao <landen.chao@mediatek.com>");
+MODULE_LICENSE("GPL");
+
+MODULE_DEVICE_TABLE(mdio, gpy211_phy_tbl);
diff --git a/target/linux/mediatek/patches-5.4/740-add-gpy211-phy-support.patch b/target/linux/mediatek/patches-5.4/740-add-gpy211-phy-support.patch
new file mode 100644
index 0000000..2496084
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/740-add-gpy211-phy-support.patch
@@ -0,0 +1,28 @@
+Index: linux-5.4.119/drivers/net/phy/Kconfig
+===================================================================
+--- linux-5.4.119.orig/drivers/net/phy/Kconfig
++++ linux-5.4.119/drivers/net/phy/Kconfig
+@@ -468,6 +468,11 @@ config FIXED_PHY
+ 
+ 	  Currently tested with mpc866ads and mpc8349e-mitx.
+ 
++config GPY211_PHY
++	tristate "GPY211 PHY"
++	---help---
++	  Supports the Intel GPY211 PHY with rate adaption.
++
+ config ICPLUS_PHY
+ 	tristate "ICPlus PHYs"
+ 	---help---
+Index: linux-5.4.119/drivers/net/phy/Makefile
+===================================================================
+--- linux-5.4.119.orig/drivers/net/phy/Makefile
++++ linux-5.4.119/drivers/net/phy/Makefile
+@@ -86,6 +86,7 @@ obj-$(CONFIG_DP83TC811_PHY)	+= dp83tc811
+ obj-$(CONFIG_DP83848_PHY)	+= dp83848.o
+ obj-$(CONFIG_DP83867_PHY)	+= dp83867.o
+ obj-$(CONFIG_FIXED_PHY)		+= fixed_phy.o
++obj-$(CONFIG_GPY211_PHY)	+= gpy211.o
+ obj-$(CONFIG_ICPLUS_PHY)	+= icplus.o
+ obj-$(CONFIG_INTEL_XWAY_PHY)	+= intel-xway.o
+ obj-$(CONFIG_LSI_ET1011C_PHY)	+= et1011c.o