Index: drivers/net/phy/en8801sc.c
===================================================================
--- /dev/null
+++ b/drivers/net/phy/en8801sc.c
@@ -0,0 +1,449 @@
+// SPDX-License-Identifier: GPL-2.0
+/* FILE NAME:  en8801sc.c
+ * PURPOSE:
+ *      EN8801S phy driver for Linux
+ * NOTES:
+ *
+ */
+
+/* INCLUDE FILE DECLARATIONS
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/delay.h>
+
+#include <linux/uaccess.h>
+#include <linux/version.h>
+
+#include "en8801sc.h"
+
+MODULE_DESCRIPTION("Airoha EN8801S PHY drivers for MT7981 SoC");
+MODULE_AUTHOR("Airoha");
+MODULE_LICENSE("GPL");
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0))
+#define phydev_mdio_bus(dev) ((dev)->bus)
+#else
+#define phydev_mdio_bus(dev) ((dev)->mdio.bus)
+#endif
+
+enum {
+    PHY_STATE_DONE = 0,
+    PHY_STATE_INIT = 1,
+    PHY_STATE_PROCESS = 2,
+};
+
+static int preSpeed = 0;
+/************************************************************************
+*                  F U N C T I O N S
+************************************************************************/
+unsigned int airoha_cl45_write(struct mii_bus *bus, u32 port, u32 devad, u32 reg, u16 val)
+{
+    mdiobus_write(bus, port, MII_MMD_ACC_CTL_REG, devad);
+    mdiobus_write(bus, port, MII_MMD_ADDR_DATA_REG, reg);
+    mdiobus_write(bus, port, MII_MMD_ACC_CTL_REG, MMD_OP_MODE_DATA | devad);
+    mdiobus_write(bus, port, MII_MMD_ADDR_DATA_REG, val);
+    return 0;
+}
+
+unsigned int airoha_cl45_read(struct mii_bus *bus, u32 port, u32 devad, u32 reg, u32 *read_data)
+{
+    mdiobus_write(bus, port, MII_MMD_ACC_CTL_REG, devad);
+    mdiobus_write(bus, port, MII_MMD_ADDR_DATA_REG, reg);
+    mdiobus_write(bus, port, MII_MMD_ACC_CTL_REG, MMD_OP_MODE_DATA | devad);
+    *read_data = mdiobus_read(bus, port, MII_MMD_ADDR_DATA_REG);
+    return 0;
+}
+
+unsigned int airoha_cl22_read(struct mii_bus *ebus, unsigned int phy_addr,unsigned int phy_register,unsigned int *read_data)
+{
+    *read_data = mdiobus_read(ebus, phy_addr, phy_register);
+    return 0;
+}
+
+unsigned int airoha_cl22_write(struct mii_bus *ebus, unsigned int phy_addr, unsigned int phy_register,unsigned int write_data)
+{
+    mdiobus_write(ebus, phy_addr, phy_register, write_data);
+    return 0;
+}
+
+void airoha_pbus_write(struct mii_bus *ebus, unsigned long pbus_id, unsigned long pbus_address, unsigned long pbus_data)
+{
+    airoha_cl22_write(ebus, pbus_id, 0x1F, (unsigned int)(pbus_address >> 6));
+    airoha_cl22_write(ebus, pbus_id, (unsigned int)((pbus_address >> 2) & 0xf), (unsigned int)(pbus_data & 0xFFFF));
+    airoha_cl22_write(ebus, pbus_id, 0x10, (unsigned int)(pbus_data >> 16));
+    return;
+}
+
+unsigned long airoha_pbus_read(struct mii_bus *ebus, unsigned long pbus_id, unsigned long pbus_address)
+{
+    unsigned long pbus_data;
+    unsigned int pbus_data_low, pbus_data_high;
+
+    airoha_cl22_write(ebus, pbus_id, 0x1F, (unsigned int)(pbus_address >> 6));
+    airoha_cl22_read(ebus, pbus_id, (unsigned int)((pbus_address >> 2) & 0xf), &pbus_data_low);
+    airoha_cl22_read(ebus, pbus_id, 0x10, &pbus_data_high);
+    pbus_data = (pbus_data_high << 16) + pbus_data_low;
+    return pbus_data;
+}
+
+/* Airoha Token Ring Write function */
+void airoha_tr_reg_write(struct mii_bus *ebus, unsigned long tr_address, unsigned long tr_data)
+{
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x1F, 0x52b5);       /* page select */
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x11, (unsigned int)(tr_data & 0xffff));
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x12, (unsigned int)(tr_data >> 16));
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x10, (unsigned int)(tr_address | TrReg_WR));
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x1F, 0x0);          /* page resetore */
+    return;
+}
+
+/* Airoha Token Ring Read function */
+unsigned long airoha_tr_reg_read(struct mii_bus *ebus, unsigned long tr_address)
+{
+    unsigned long tr_data;
+    unsigned int tr_data_low, tr_data_high;
+
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x1F, 0x52b5);       /* page select */
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x10, (unsigned int)(tr_address | TrReg_RD));
+    airoha_cl22_read(ebus, EN8801S_MDIO_PHY_ID, 0x11, &tr_data_low);
+    airoha_cl22_read(ebus, EN8801S_MDIO_PHY_ID, 0x12, &tr_data_high);
+    airoha_cl22_write(ebus, EN8801S_MDIO_PHY_ID, 0x1F, 0x0);          /* page resetore */
+    tr_data = (tr_data_high << 16) + tr_data_low;
+    return tr_data;
+}
+
+void en8801s_led_init(struct mii_bus *mbus)
+{
+    u32 reg_value;
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x186c, 0x3);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0X1870, 0x100);
+    reg_value = (airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1880) & ~(0x3));
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1880, reg_value);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x21, 0x8008);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x22, 0x600);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x23, 0xc00);
+    /* LED0: 10M/100M */
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x24, 0x8006);
+    /* LED0: blink 10M/100M Tx/Rx */
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x25, 0x3c);
+    /* LED1: 1000M */
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x26, 0x8001);
+    /* LED1: blink 1000M Tx/Rx */
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1f, 0x27, 0x3);
+}
+
+static int en8801s_phy_process(struct phy_device *phydev)
+{
+    struct mii_bus *mbus = phydev_mdio_bus(phydev);
+    u32 reg_value = 0;
+
+    reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x19e0);
+    reg_value |= (1 << 0);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x19e0, reg_value);
+    reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x19e0);
+    reg_value &= ~(1 << 0);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x19e0, reg_value);
+    return 0;
+}
+
+static int en8801s_phase1_init(struct phy_device *phydev)
+{
+    unsigned long pbus_data;
+    unsigned int pbusAddress;
+    u32 reg_value;
+    int retry;
+    struct mii_bus *mbus = phydev_mdio_bus(phydev);
+
+    msleep(1500);
+
+    pbusAddress = EN8801S_PBUS_DEFAULT_ID;
+    retry = MAX_OUI_CHECK;
+    while(1)
+    {
+        pbus_data = airoha_pbus_read(mbus, pbusAddress, EN8801S_RG_ETHER_PHY_OUI);      /* PHY OUI */
+        if(EN8801S_PBUS_OUI == pbus_data)
+        {
+            pbus_data = airoha_pbus_read(mbus, pbusAddress, EN8801S_RG_SMI_ADDR);       /* SMI ADDR */
+            pbus_data = (pbus_data & 0xffff0000) | (unsigned long)(EN8801S_PBUS_PHY_ID << 8) | (unsigned long)(EN8801S_MDIO_PHY_ID );
+            printk("[Airoha] EN8801S SMI_ADDR=%lx (renew)\n", pbus_data);
+            airoha_pbus_write(mbus, pbusAddress, EN8801S_RG_SMI_ADDR, pbus_data);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_BUCK_CTL, 0x03);
+            mdelay(10);
+            break;
+        }
+        else
+        {
+            pbusAddress = EN8801S_PBUS_PHY_ID;
+        }
+        retry --;
+        if (0 == retry)
+        {
+            printk("[Airoha] EN8801S probe fail !\n");
+            return 0;
+        }
+    }
+
+    reg_value = (airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL) & 0xfffffffc) | 0x10 | (EN8801S_RX_POLARITY << 1) | EN8801S_TX_POLARITY;
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL, reg_value);
+    mdelay(10);
+    reg_value &= 0xffffffef;
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL, reg_value);
+
+    retry = MAX_RETRY;
+    while (1)
+    {
+        mdelay(10);
+        reg_value = phy_read(phydev, MII_PHYSID2);
+        if (reg_value == EN8801S_PHY_ID2)
+        {
+            break;    /* wait GPHY ready */
+        }
+        retry--;
+        if (0 == retry)
+        {
+            printk("[Airoha] EN8801S initialize fail !\n");
+            return 0;
+        }
+    }
+    /* Software Reset PHY */
+    reg_value = phy_read(phydev, MII_BMCR);
+    reg_value |= BMCR_RESET;
+    phy_write(phydev, MII_BMCR, reg_value);
+    retry = MAX_RETRY;
+    do
+    {
+        mdelay(10);
+        reg_value = phy_read(phydev, MII_BMCR);
+        retry--;
+        if (0 == retry)
+        {
+            printk("[Airoha] EN8801S reset fail !\n");
+            return 0;
+        }
+    } while (reg_value & BMCR_RESET);
+
+    printk("[Airoha] EN8801S Phase1 initialize OK ! (%s)\n", EN8801S_DRIVER_VERSION);
+    return 0;
+}
+
+static int en8801s_phase2_init(struct phy_device *phydev)
+{
+    gephy_all_REG_LpiReg1Ch      GPHY_RG_LPI_1C;
+    gephy_all_REG_dev1Eh_reg324h GPHY_RG_1E_324;
+    gephy_all_REG_dev1Eh_reg012h GPHY_RG_1E_012;
+    gephy_all_REG_dev1Eh_reg017h GPHY_RG_1E_017;
+    unsigned long pbus_data;
+    u32 reg_value;
+    int retry;
+    struct mii_bus *mbus = phydev_mdio_bus(phydev);
+
+    reg_value = (airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL) & 0xfffffffc) | 0x10 | (EN8801S_RX_POLARITY << 1) | EN8801S_TX_POLARITY;
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL, reg_value);
+    mdelay(10);
+    reg_value &= 0xffffffef;
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, EN8801S_RG_LTR_CTL, reg_value);
+
+    pbus_data = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1690);
+    pbus_data |= (1 << 31);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1690, pbus_data);
+
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c000c00);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x10, 0xD801);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0,  0x9140);
+
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0A14, 0x0003);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c000c00);
+    /* Set FCM control */
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1404, 0x004b);
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x140c, 0x0007);
+
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x142c, 0x05050505);
+    /* Set GPHY Perfomance*/
+    /* Token Ring */
+    airoha_tr_reg_write(mbus, RgAddr_PMA_01h,     0x6FB90A);
+    airoha_tr_reg_write(mbus, RgAddr_PMA_18h,     0x0E2F00);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_06h,    0x2EBAEF);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_11h,    0x040001);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_03h,    0x000004);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_1Ch,    0x003210);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_14h,    0x00024A);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_0Ch,    0x00704D);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_0Dh,    0x02314F);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_10h,    0x005010);
+    airoha_tr_reg_write(mbus, RgAddr_DSPF_0Fh,    0x003028);
+    airoha_tr_reg_write(mbus, RgAddr_TR_26h,      0x444444);
+    airoha_tr_reg_write(mbus, RgAddr_R1000DEC_15h,0x0055A0);
+    /* CL22 & CL45 */
+    phy_write(phydev, 0x1f, 0x03);
+    GPHY_RG_LPI_1C.DATA = phy_read(phydev, RgAddr_LpiReg1Ch);
+    GPHY_RG_LPI_1C.DataBitField.smi_deton_th = 0x0C;
+    phy_write(phydev, RgAddr_LpiReg1Ch, GPHY_RG_LPI_1C.DATA);
+    phy_write(phydev, 0x1f, 0x0);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x122, 0xffff);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x234, 0x0180);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x238, 0x0120);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x120, 0x9014);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x239, 0x0117);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x14A, 0xEE20);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x19B, 0x0111);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1F, 0x268, 0x07F4);
+
+    airoha_cl45_read(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x324, &reg_value);
+    GPHY_RG_1E_324.DATA=(u16)reg_value;
+    GPHY_RG_1E_324.DataBitField.smi_det_deglitch_off = 0;
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x324, (u32)GPHY_RG_1E_324.DATA);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x19E, 0xC2);
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x013, 0x0);
+
+    /* EFUSE */
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1C08, 0x40000040);
+    retry = MAX_RETRY;
+    while (0 != retry)
+    {
+        mdelay(1);
+        reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1C08);
+        if ((reg_value & (1 << 30)) == 0)
+        {
+            break;
+        }
+        retry--;
+    }
+    reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1C38);          /* RAW#2 */
+    GPHY_RG_1E_012.DataBitField.da_tx_i2mpb_a_tbt = reg_value & 0x03f;
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x12, (u32)GPHY_RG_1E_012.DATA);
+    GPHY_RG_1E_017.DataBitField.da_tx_i2mpb_b_tbt=(reg_value >> 8) & 0x03f;
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x12, (u32)GPHY_RG_1E_017.DATA);
+
+    airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1C08, 0x40400040);
+    retry = MAX_RETRY;
+    while (0 != retry)
+    {
+        mdelay(1);
+        reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1C08);
+        if ((reg_value & (1 << 30)) == 0)
+        {
+            break;
+        }
+        retry--;
+    }
+    reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1C30);          /* RAW#16 */
+    GPHY_RG_1E_324.DataBitField.smi_det_deglitch_off = (reg_value >> 12) & 0x01;
+    airoha_cl45_write(mbus, EN8801S_MDIO_PHY_ID, 0x1E, 0x324, (u32)GPHY_RG_1E_324.DATA);
+
+    en8801s_led_init(mbus);
+
+    printk("[Airoha] EN8801S Phase2 initialize OK !\n");
+    return 0;
+}
+
+static int en8801s_read_status(struct phy_device *phydev)
+{
+    int ret;
+    struct mii_bus *mbus = phydev_mdio_bus(phydev);
+    u32 reg_value;
+    static int phystate = PHY_STATE_INIT;
+
+    ret = genphy_read_status(phydev);
+    if (LINK_DOWN == phydev->link) preSpeed =0;
+
+    if (phystate == PHY_STATE_PROCESS) {
+        en8801s_phy_process(phydev);
+        phystate = PHY_STATE_DONE;
+    }
+
+    if ((preSpeed != phydev->speed) && (LINK_UP == phydev->link))
+    {
+        preSpeed = phydev->speed;
+
+        if (phystate == PHY_STATE_INIT) {
+            en8801s_phase2_init(phydev);
+            phystate = PHY_STATE_PROCESS;
+        }
+
+        if (preSpeed == SPEED_10) {
+            reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1694);
+            reg_value |= (1 << 31);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1694, reg_value);
+            phystate = PHY_STATE_PROCESS;
+        } else {
+            reg_value = airoha_pbus_read(mbus, EN8801S_PBUS_PHY_ID, 0x1694);
+            reg_value &= ~(1 << 31);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1694, reg_value);
+            phystate = PHY_STATE_PROCESS;
+        }
+
+        airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c000c00);
+        if (SPEED_1000 == preSpeed)
+        {
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x10, 0xD801);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0,  0x9140);
+
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0A14, 0x0003);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c000c00);
+            mdelay(2);      /* delay 2 ms */
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1404, 0x004b);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x140c, 0x0007);
+        }
+        else if (SPEED_100 == preSpeed)
+        {
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x10, 0xD401);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0,  0x9140);
+
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0A14, 0x0007);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c11);
+            mdelay(2);      /* delay 2 ms */
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1404, 0x0027);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x140c, 0x0007);
+        }
+        else if (SPEED_10 == preSpeed)
+        {
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x10, 0xD001);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0,  0x9140);
+
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0A14, 0x000b);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x0600, 0x0c11);
+            mdelay(2);      /* delay 2 ms */
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x1404, 0x0027);
+            airoha_pbus_write(mbus, EN8801S_PBUS_PHY_ID, 0x140c, 0x0007);
+        }
+    }
+    return ret;
+}
+
+static struct phy_driver Airoha_driver[] = {
+{
+    .phy_id         = EN8801S_PHY_ID,
+    .name           = "Airoha EN8801S",
+    .phy_id_mask    = 0x0ffffff0,
+    .features       = PHY_GBIT_FEATURES,
+    .config_init    = en8801s_phase1_init,
+    .config_aneg    = genphy_config_aneg,
+    .read_status    = en8801s_read_status,
+    .suspend        = genphy_suspend,
+    .resume         = genphy_resume,
+} };
+
+module_phy_driver(Airoha_driver);
+
+static struct mdio_device_id __maybe_unused Airoha_tbl[] = {
+    { EN8801S_PHY_ID, 0x0ffffff0 },
+    { }
+};
+
+MODULE_DEVICE_TABLE(mdio, Airoha_tbl);
Index: drivers/net/phy/en8801sc.h
===================================================================
--- /dev/null
+++ b/drivers/net/phy/en8801sc.h
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: GPL-2.0
+/* FILE NAME:  en8801sc.h
+ * PURPOSE:
+ *      Define EN8801S driver function
+ *
+ * NOTES:
+ *
+ */
+
+#ifndef __AIROHA_H
+#define __AIROHA_H
+
+/* NAMING DECLARATIONS
+ */
+#define EN8801S_DRIVER_VERSION  "1.0.0"
+
+#define PHY_ADDRESS_RANGE       0x18
+#define EN8801S_PBUS_DEFAULT_ID 0x1e
+#define EN8801S_MDIO_PHY_ID     0x18       /* Range PHY_ADDRESS_RANGE .. 0x1e */
+#define EN8801S_PBUS_PHY_ID     (EN8801S_MDIO_PHY_ID + 1)
+
+#define EN8801S_RG_ETHER_PHY_OUI 0x19a4
+#define EN8801S_RG_SMI_ADDR      0x19a8
+#define EN8801S_RG_BUCK_CTL      0x1a20
+#define EN8801S_RG_LTR_CTL      0x0cf8
+
+#define EN8801S_PBUS_OUI        0x17a5
+#define EN8801S_PHY_ID1         0x03a2
+#define EN8801S_PHY_ID2         0x9471
+#define EN8801S_PHY_ID          (unsigned long)((EN8801S_PHY_ID1 << 16) | EN8801S_PHY_ID2)
+
+#define DEV1E_REG013_VALUE      0
+#define DEV1E_REG19E_VALUE      0xC2
+#define DEV1E_REG324_VALUE      0x200
+
+#define TRUE                    1
+#define FALSE                   0
+#define LINK_UP                 1
+#define LINK_DOWN               0
+
+//#define TEST_BOARD
+#if defined(TEST_BOARD)
+/* SFP sample for verification */
+#define EN8801S_TX_POLARITY     1
+#define EN8801S_RX_POLARITY     0
+#else
+/* chip on board */
+#define EN8801S_TX_POLARITY     0
+#define EN8801S_RX_POLARITY     1       /* The pin default assignment is set to 1 */
+#endif
+
+#define MAX_RETRY               5
+#define MAX_OUI_CHECK           2
+/* CL45 MDIO control */
+#define MII_MMD_ACC_CTL_REG     0x0d
+#define MII_MMD_ADDR_DATA_REG   0x0e
+#define MMD_OP_MODE_DATA        BIT(14)
+
+#define MAX_TRG_COUNTER         5
+
+/* CL22 Reg Support Page Select */
+#define RgAddr_Reg1Fh        0x1f
+#define CL22_Page_Reg        0x0000
+#define CL22_Page_ExtReg     0x0001
+#define CL22_Page_MiscReg    0x0002
+#define CL22_Page_LpiReg     0x0003
+#define CL22_Page_tReg       0x02A3
+#define CL22_Page_TrReg      0x52B5
+
+/* CL45 Reg Support DEVID */
+#define DEVID_03             0x03
+#define DEVID_07             0x07
+#define DEVID_1E             0x1E
+#define DEVID_1F             0x1F
+
+/* TokenRing Reg Access */
+#define TrReg_PKT_XMT_STA    0x8000
+#define TrReg_WR             0x8000
+#define TrReg_RD             0xA000
+
+#define RgAddr_LpiReg1Ch     0x1c
+#define RgAddr_PMA_01h       0x0f82
+#define RgAddr_PMA_18h       0x0fb0
+#define RgAddr_DSPF_03h      0x1686
+#define RgAddr_DSPF_06h      0x168c
+#define RgAddr_DSPF_0Ch      0x1698
+#define RgAddr_DSPF_0Dh      0x169a
+#define RgAddr_DSPF_0Fh      0x169e
+#define RgAddr_DSPF_10h      0x16a0
+#define RgAddr_DSPF_11h      0x16a2
+#define RgAddr_DSPF_14h      0x16a8
+#define RgAddr_DSPF_1Ch      0x16b8
+#define RgAddr_TR_26h        0x0ecc
+#define RgAddr_R1000DEC_15h  0x03aa
+
+/* DATA TYPE DECLARATIONS
+ */
+typedef struct
+{
+    u16 DATA_Lo;
+    u16 DATA_Hi;
+}TR_DATA_T;
+
+typedef union
+{
+    struct
+    {
+        /* b[15:00] */
+        u16 smi_deton_wt                             : 3;
+        u16 smi_det_mdi_inv                          : 1;
+        u16 smi_detoff_wt                            : 3;
+        u16 smi_sigdet_debouncing_en                 : 1;
+        u16 smi_deton_th                             : 6;
+        u16 rsv_14                                   : 2;
+    } DataBitField;
+    u16 DATA;
+} gephy_all_REG_LpiReg1Ch, *Pgephy_all_REG_LpiReg1Ch;
+
+typedef union
+{
+    struct
+    {
+        /* b[15:00] */
+        u16 rg_smi_detcnt_max                        : 6;
+        u16 rsv_6                                    : 2;
+        u16 rg_smi_det_max_en                        : 1;
+        u16 smi_det_deglitch_off                     : 1;
+        u16 rsv_10                                   : 6;
+    } DataBitField;
+    u16 DATA;
+} gephy_all_REG_dev1Eh_reg324h, *Pgephy_all_REG_dev1Eh_reg324h;
+
+typedef union
+{
+    struct
+    {
+        /* b[15:00] */
+        u16 da_tx_i2mpb_a_tbt                        : 6;
+        u16 rsv_6                                    : 4;
+        u16 da_tx_i2mpb_a_gbe                        : 6;
+    } DataBitField;
+    u16 DATA;
+} gephy_all_REG_dev1Eh_reg012h, *Pgephy_all_REG_dev1Eh_reg012h;
+
+typedef union
+{
+    struct
+    {
+        /* b[15:00] */
+        u16 da_tx_i2mpb_b_tbt                        : 6;
+        u16 rsv_6                                    : 2;
+        u16 da_tx_i2mpb_b_gbe                        : 6;
+        u16 rsv_14                                   : 2;
+    } DataBitField;
+    u16 DATA;
+} gephy_all_REG_dev1Eh_reg017h, *Pgephy_all_REG_dev1Eh_reg017h;
+
+#endif /* End of __AIROHA_H */
Index: drivers/net/phy/Kconfig
===================================================================
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -350,6 +350,11 @@ config AIROHA_EN8801S_PHY
 	---help---
 	  Currently supports the Airoha EN8801S PHY.
 
+config AIROHA_EN8801SC_PHY
+        tristate "Drivers for Airoha EN8801S Gigabit PHYs for MT7981 SoC."
+        ---help---
+          Currently supports the Airoha EN8801S PHY for MT7981 SoC.
+
 config ADIN_PHY
 	tristate "Analog Devices Industrial Ethernet PHYs"
 	help
Index: drivers/net/phy/Makefile
===================================================================
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -68,6 +68,7 @@ ifdef CONFIG_HWMON
 aquantia-objs			+= aquantia_hwmon.o
 endif
 obj-$(CONFIG_AIROHA_EN8801S_PHY)	+= en8801s.o
+obj-$(CONFIG_AIROHA_EN8801SC_PHY)	+= en8801sc.o
 obj-$(CONFIG_AQUANTIA_PHY)	+= aquantia.o
 obj-$(CONFIG_AX88796B_PHY)	+= ax88796b.o
 obj-$(CONFIG_AT803X_PHY)	+= at803x.o