From b5aa08e6dd4e06ffd3fb4de2ffc6af1e3da0bce4 Mon Sep 17 00:00:00 2001
From: Sam Shih <sam.shih@mediatek.com>
Date: Fri, 2 Jun 2023 13:06:00 +0800
Subject: [PATCH] 
 [backport-networking-drivers][999-1703-en8811h-2p5gphy-support.patch]

---
 drivers/net/phy/Kconfig       |   5 +
 drivers/net/phy/Makefile      |   1 +
 drivers/net/phy/air_en8811h.c | 702 ++++++++++++++++++++++++++++++++++
 drivers/net/phy/air_en8811h.h | 151 ++++++++
 4 files changed, 859 insertions(+)
 create mode 100644 drivers/net/phy/air_en8811h.c
 create mode 100644 drivers/net/phy/air_en8811h.h

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 170dd00cd..5eeccfee2 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -345,6 +345,11 @@ config SFP
 	depends on HWMON || HWMON=n
 	select MDIO_I2C
 
+config AIROHA_EN8811H_PHY
+	tristate "Drivers for Airoha EN8811H 2.5G Gigabit PHY"
+	---help---
+	  Currently supports the Airoha EN8811H PHY.
+
 config ADIN_PHY
 	tristate "Analog Devices Industrial Ethernet PHYs"
 	help
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 2368c1d19..8ea612a85 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -67,6 +67,7 @@ aquantia-objs			+= aquantia_main.o
 ifdef CONFIG_HWMON
 aquantia-objs			+= aquantia_hwmon.o
 endif
+obj-$(CONFIG_AIROHA_EN8811H_PHY)	+= air_en8811h.o
 obj-$(CONFIG_AQUANTIA_PHY)	+= aquantia.o
 obj-$(CONFIG_AX88796B_PHY)	+= ax88796b.o
 obj-$(CONFIG_AT803X_PHY)	+= at803x.o
diff --git a/drivers/net/phy/air_en8811h.c b/drivers/net/phy/air_en8811h.c
new file mode 100644
index 000000000..cf564fc04
--- /dev/null
+++ b/drivers/net/phy/air_en8811h.c
@@ -0,0 +1,702 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/* FILE NAME:  air_en8811h.c
+ * PURPOSE:
+ *      EN8811H phy driver for Linux
+ * NOTES:
+ *
+ */
+
+/* INCLUDE FILE DECLARATIONS
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+#include <linux/delay.h>
+#include <linux/ethtool.h>
+#include <linux/delay.h>
+#include <linux/version.h>
+#include <linux/firmware.h>
+#include <linux/crc32.h>
+
+#include "air_en8811h.h"
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0))
+#define phydev_mdio_bus(_dev) (_dev->bus)
+#define phydev_addr(_dev) (_dev->addr)
+#define phydev_dev(_dev) (&_dev->dev)
+#else
+#define phydev_mdio_bus(_dev) (_dev->mdio.bus)
+#define phydev_addr(_dev) (_dev->mdio.addr)
+#define phydev_dev(_dev) (&_dev->mdio.dev)
+#endif
+
+MODULE_DESCRIPTION("Airoha EN8811H PHY drivers");
+MODULE_AUTHOR("Airoha");
+MODULE_LICENSE("GPL");
+
+/*
+GPIO5  <-> BASE_T_LED0,
+GPIO4  <-> BASE_T_LED1,
+GPIO3  <-> BASE_T_LED2,
+*/
+/* User-defined.B */
+#define AIR_LED_SUPPORT
+#ifdef AIR_LED_SUPPORT
+static const AIR_BASE_T_LED_CFG_T led_cfg[3] =
+{
+    /*
+     *    LED Enable,            GPIO,            LED Polarity,            LED ON,               LED Blink
+     */
+         {LED_ENABLE,      AIR_LED0_GPIO5,       AIR_ACTIVE_HIGH,     BASE_T_LED0_ON_CFG,    BASE_T_LED0_BLK_CFG}, /* BASE-T LED0 */
+         {LED_ENABLE,      AIR_LED1_GPIO4,       AIR_ACTIVE_HIGH,     BASE_T_LED1_ON_CFG,    BASE_T_LED1_BLK_CFG}, /* BASE-T LED1 */
+         {LED_ENABLE,      AIR_LED2_GPIO3,       AIR_ACTIVE_HIGH,     BASE_T_LED2_ON_CFG,    BASE_T_LED2_BLK_CFG}, /* BASE-T LED2 */
+};
+static const u16 led_dur = UNIT_LED_BLINK_DURATION << AIR_LED_BLK_DUR_64M;
+#endif
+/* User-defined.E */
+
+/************************************************************************
+*                  F U N C T I O N S
+************************************************************************/
+#if 0
+/* Airoha MII read function */
+static int air_mii_cl22_read(struct mii_bus *ebus, unsigned int phy_addr,unsigned int phy_register)
+{
+    int read_data;
+    read_data = mdiobus_read(ebus, phy_addr, phy_register);
+    return read_data;
+}
+#endif
+/* Airoha MII write function */
+static int air_mii_cl22_write(struct mii_bus *ebus, unsigned int phy_addr, unsigned int phy_register,unsigned int write_data)
+{
+    int ret = 0;
+    ret = mdiobus_write(ebus, phy_addr, phy_register, write_data);
+    return ret;
+}
+
+static int air_mii_cl45_read(struct phy_device *phydev, int devad, u16 reg)
+{
+    int ret = 0;
+    int data;
+    struct device *dev = phydev_dev(phydev);
+    ret = phy_write(phydev, MII_MMD_ACC_CTL_REG, devad);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return INVALID_DATA;
+    }
+    ret = phy_write(phydev, MII_MMD_ADDR_DATA_REG, reg);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return INVALID_DATA;
+    }
+    ret = phy_write(phydev, MII_MMD_ACC_CTL_REG, MMD_OP_MODE_DATA | devad);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return INVALID_DATA;
+    }
+    data = phy_read(phydev, MII_MMD_ADDR_DATA_REG);
+    return data;
+}
+
+static int air_mii_cl45_write(struct phy_device *phydev, int devad, u16 reg, u16 write_data)
+{
+    int ret = 0;
+    struct device *dev = phydev_dev(phydev);
+    ret = phy_write(phydev, MII_MMD_ACC_CTL_REG, devad);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, MII_MMD_ADDR_DATA_REG, reg);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, MII_MMD_ACC_CTL_REG, MMD_OP_MODE_DATA | devad);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, MII_MMD_ADDR_DATA_REG, write_data);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    return 0;
+}
+/* Use default PBUS_PHY_ID */
+/* EN8811H PBUS write function */
+static int air_pbus_reg_write(struct phy_device *phydev, unsigned long pbus_address, unsigned long pbus_data)
+{
+    struct mii_bus *mbus = phydev_mdio_bus(phydev);
+    int addr = phydev_addr(phydev);
+    int ret = 0;
+    ret = air_mii_cl22_write(mbus, (addr + 8), 0x1F, (unsigned int)(pbus_address >> 6));
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl22_write(mbus, (addr + 8), (unsigned int)((pbus_address >> 2) & 0xf), (unsigned int)(pbus_data & 0xFFFF));
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl22_write(mbus, (addr + 8), 0x10, (unsigned int)(pbus_data >> 16));
+    AIR_RTN_ERR(ret);
+    return 0;
+}
+
+/* EN8811H BUCK write function */
+static int air_buckpbus_reg_write(struct phy_device *phydev, unsigned long pbus_address, unsigned int pbus_data)
+{
+    int ret = 0;
+    struct device *dev = phydev_dev(phydev);
+    ret = phy_write(phydev, 0x1F, (unsigned int)4);        /* page 4 */
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x10, (unsigned int)0);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x11, (unsigned int)((pbus_address >> 16) & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x12, (unsigned int)(pbus_address & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x13, (unsigned int)((pbus_data >> 16) & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x14, (unsigned int)(pbus_data & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x1F, 0);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    return 0;
+}
+
+/* EN8811H BUCK read function */
+static unsigned int air_buckpbus_reg_read(struct phy_device *phydev, unsigned long pbus_address)
+{
+    unsigned int pbus_data = 0, pbus_data_low, pbus_data_high;
+    int ret = 0;
+    struct device *dev = phydev_dev(phydev);
+    ret = phy_write(phydev, 0x1F, (unsigned int)4);        /* page 4 */
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return PBUS_INVALID_DATA;
+    }
+    ret = phy_write(phydev, 0x10, (unsigned int)0);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return PBUS_INVALID_DATA;
+    }
+    ret = phy_write(phydev, 0x15, (unsigned int)((pbus_address >> 16) & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return PBUS_INVALID_DATA;
+    }
+    ret = phy_write(phydev, 0x16, (unsigned int)(pbus_address & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return PBUS_INVALID_DATA;
+    }
+
+    pbus_data_high = phy_read(phydev, 0x17);
+    pbus_data_low = phy_read(phydev, 0x18);
+    pbus_data = (pbus_data_high << 16) + pbus_data_low;
+    ret = phy_write(phydev, 0x1F, 0);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    return pbus_data;
+}
+
+static int MDIOWriteBuf(struct phy_device *phydev, unsigned long address, const struct firmware *fw)
+{
+    unsigned int write_data, offset ;
+    int ret = 0;
+    struct device *dev = phydev_dev(phydev);
+    ret = phy_write(phydev, 0x1F, (unsigned int)4);            /* page 4 */
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x10, (unsigned int)0x8000);        /* address increment*/
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x11, (unsigned int)((address >> 16) & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    ret = phy_write(phydev, 0x12, (unsigned int)(address & 0xffff));
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+
+    for (offset = 0; offset < fw->size; offset += 4)
+    {
+        write_data = (fw->data[offset + 3] << 8) | fw->data[offset + 2];
+        ret = phy_write(phydev, 0x13, write_data);
+        if (ret < 0) {
+            dev_err(dev, "phy_write, ret: %d\n", ret);
+            return ret;
+        }
+        write_data = (fw->data[offset + 1] << 8) | fw->data[offset];
+        ret = phy_write(phydev, 0x14, write_data);
+        if (ret < 0) {
+            dev_err(dev, "phy_write, ret: %d\n", ret);
+            return ret;
+        }
+    }
+    ret = phy_write(phydev, 0x1F, (unsigned int)0);
+    if (ret < 0) {
+        dev_err(dev, "phy_write, ret: %d\n", ret);
+        return ret;
+    }
+    return 0;
+}
+
+static int en8811h_load_firmware(struct phy_device *phydev)
+{
+    struct device *dev = phydev_dev(phydev);
+    const struct firmware *fw;
+    const char *firmware;
+    int ret = 0;
+    unsigned int crc32;
+    u32 pbus_value = 0;
+
+    ret = air_buckpbus_reg_write(phydev, 0x0f0018, 0x0);
+    AIR_RTN_ERR(ret);
+    pbus_value = air_buckpbus_reg_read(phydev, 0x800000);
+    pbus_value |= BIT(11);
+    ret = air_buckpbus_reg_write(phydev, 0x800000, pbus_value);
+    AIR_RTN_ERR(ret);
+    firmware = EN8811H_MD32_DM;
+    ret = request_firmware_direct(&fw, firmware, dev);
+    if (ret < 0) {
+        dev_info(dev, "failed to load firmware %s, ret: %d\n", firmware, ret);
+        return ret;
+    }
+    crc32 = ~crc32(~0, fw->data, fw->size);
+    dev_info(dev, "%s: crc32=0x%x\n", firmware, crc32);
+    /* Download DM */
+    ret = MDIOWriteBuf(phydev, 0x00000000, fw);
+    if (ret < 0) {
+        dev_info(dev, "MDIOWriteBuf 0x00000000 fail, ret: %d\n", ret);
+        return ret;
+    }
+    release_firmware(fw);
+
+    firmware = EN8811H_MD32_DSP;
+    ret = request_firmware_direct(&fw, firmware, dev);
+    if (ret < 0) {
+        dev_info(dev, "failed to load firmware %s, ret: %d\n", firmware, ret);
+        return ret;
+    }
+    crc32 = ~crc32(~0, fw->data, fw->size);
+    dev_info(dev, "%s: crc32=0x%x\n", firmware, crc32);
+    /* Download PM */
+    ret = MDIOWriteBuf(phydev, 0x00100000, fw);
+    if (ret < 0) {
+            dev_info(dev, "MDIOWriteBuf 0x00100000 fail , ret: %d\n", ret);
+            return ret;
+    }
+    release_firmware(fw);
+
+    pbus_value = air_buckpbus_reg_read(phydev, 0x800000);
+    pbus_value &= ~BIT(11);
+    ret = air_buckpbus_reg_write(phydev, 0x800000, pbus_value);
+    AIR_RTN_ERR(ret);
+    ret = air_buckpbus_reg_write(phydev, 0x0f0018, 0x01);
+    AIR_RTN_ERR(ret);
+    return 0;
+}
+
+#ifdef  AIR_LED_SUPPORT
+static int airoha_led_set_usr_def(struct phy_device *phydev, u8 entity, int polar,
+                                   u16 on_evt, u16 blk_evt)
+{
+    int ret = 0;
+    if (AIR_ACTIVE_HIGH == polar) {
+        on_evt |= LED_ON_POL;
+    } else {
+        on_evt &= ~LED_ON_POL ;
+    }
+    ret = air_mii_cl45_write(phydev, 0x1f, LED_ON_CTRL(entity), on_evt | LED_ON_EN);
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl45_write(phydev, 0x1f, LED_BLK_CTRL(entity), blk_evt);
+    AIR_RTN_ERR(ret);
+    return 0;
+}
+
+static int airoha_led_set_mode(struct phy_device *phydev, u8 mode)
+{
+    u16 cl45_data;
+    int err = 0;
+    struct device *dev = phydev_dev(phydev);
+    cl45_data = air_mii_cl45_read(phydev, 0x1f, LED_BCR);
+    switch (mode) {
+    case AIR_LED_MODE_DISABLE:
+        cl45_data &= ~LED_BCR_EXT_CTRL;
+        cl45_data &= ~LED_BCR_MODE_MASK;
+        cl45_data |= LED_BCR_MODE_DISABLE;
+        break;
+    case AIR_LED_MODE_USER_DEFINE:
+        cl45_data |= LED_BCR_EXT_CTRL;
+        cl45_data |= LED_BCR_CLK_EN;
+        break;
+    default:
+        dev_err(dev, "LED mode%d is not supported!\n", mode);
+        return -EINVAL;
+    }
+    err = air_mii_cl45_write(phydev, 0x1f, LED_BCR, cl45_data);
+    AIR_RTN_ERR(err);
+    return 0;
+}
+
+static int airoha_led_set_state(struct phy_device *phydev, u8 entity, u8 state)
+{
+    u16 cl45_data = 0;
+    int err;
+
+    cl45_data = air_mii_cl45_read(phydev, 0x1f, LED_ON_CTRL(entity));
+    if (LED_ENABLE == state) {
+        cl45_data |= LED_ON_EN;
+    } else {
+        cl45_data &= ~LED_ON_EN;
+    }
+
+    err = air_mii_cl45_write(phydev, 0x1f, LED_ON_CTRL(entity), cl45_data);
+    AIR_RTN_ERR(err);
+    return 0;
+}
+
+static int en8811h_led_init(struct phy_device *phydev)
+{
+
+    unsigned long led_gpio = 0, reg_value = 0;
+    u16 cl45_data = led_dur;
+    int ret = 0, led_id;
+    struct device *dev = phydev_dev(phydev);
+    ret = air_mii_cl45_write(phydev, 0x1f, LED_BLK_DUR, cl45_data);
+    AIR_RTN_ERR(ret);
+    cl45_data >>= 1;
+    ret = air_mii_cl45_write(phydev, 0x1f, LED_ON_DUR, cl45_data);
+    AIR_RTN_ERR(ret);
+    ret = airoha_led_set_mode(phydev, AIR_LED_MODE_USER_DEFINE);
+    if (ret != 0) {
+        dev_err(dev, "LED fail to set mode, ret %d !\n", ret);
+        return ret;
+    }
+    for(led_id = 0; led_id < EN8811H_LED_COUNT; led_id++)
+    {
+        /* LED0 <-> GPIO5, LED1 <-> GPIO4, LED0 <-> GPIO3 */
+        if (led_cfg[led_id].gpio != (led_id + (AIR_LED0_GPIO5 - (2 * led_id))))
+        {
+            dev_err(dev, "LED%d uses incorrect GPIO%d !\n", led_id, led_cfg[led_id].gpio);
+            return -EINVAL;
+        }
+        ret = airoha_led_set_state(phydev, led_id, led_cfg[led_id].en);
+        if (ret != 0)
+        {
+            dev_err(dev, "LED fail to set state, ret %d !\n", ret);
+            return ret;
+        }
+        if (LED_ENABLE == led_cfg[led_id].en)
+        {
+            led_gpio |= BIT(led_cfg[led_id].gpio);
+            ret = airoha_led_set_usr_def(phydev, led_id, led_cfg[led_id].pol, led_cfg[led_id].on_cfg, led_cfg[led_id].blk_cfg);
+            if (ret != 0)
+            {
+                dev_err(dev, "LED fail to set default, ret %d !\n", ret);
+                return ret;
+            }
+        }
+    }
+    reg_value = air_buckpbus_reg_read(phydev, 0xcf8b8) | led_gpio;
+    ret = air_buckpbus_reg_write(phydev, 0xcf8b8, reg_value);
+    AIR_RTN_ERR(ret);
+
+    dev_info(dev, "LED initialize OK !\n");
+    return 0;
+}
+#endif /* AIR_LED_SUPPORT */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(4, 5, 0))
+static int en8811h_get_features(struct phy_device *phydev)
+{
+    int ret;
+    struct device *dev = phydev_dev(phydev);
+    dev_info(dev, "%s()\n", __func__);
+    ret = air_pbus_reg_write(phydev, 0xcf928 , 0x0);
+    AIR_RTN_ERR(ret);
+    ret = genphy_read_abilities(phydev);
+    if (ret)
+        return ret;
+
+    /* EN8811H 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_100baseT_Half_BIT,
+               phydev->supported);
+    linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
+               phydev->supported);
+    linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+               phydev->supported);
+    linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
+               phydev->supported);
+    return 0;
+}
+#endif
+static int en8811h_phy_probe(struct phy_device *phydev)
+{
+    int ret = 0;
+    int reg_value, pid1 = 0, pid2 = 0;
+    u32 pbus_value = 0, retry;
+    struct device *dev = phydev_dev(phydev);
+    ret = air_pbus_reg_write(phydev, 0xcf928 , 0x0);
+    AIR_RTN_ERR(ret);
+    pid1 = phy_read(phydev, MII_PHYSID1);
+    if (pid1 < 0)
+        return pid1;
+    pid2 = phy_read(phydev, MII_PHYSID2);
+    if (pid2 < 0)
+        return pid2;
+    dev_info(dev, "PHY = %x - %x\n", pid1, pid2);
+    if ((EN8811H_PHY_ID1 != pid1) || (EN8811H_PHY_ID2 != pid2))
+    {
+        dev_err(dev, "EN8811H dose not exist !\n");
+        return -ENODEV;
+    }
+    ret = en8811h_load_firmware(phydev);
+    if (ret)
+    {
+        dev_err(dev,"EN8811H load firmware fail.\n");
+        return ret;
+    }
+    retry = MAX_RETRY;
+    do {
+        mdelay(300);
+        reg_value = air_mii_cl45_read(phydev, 0x1e, 0x8009);
+        if (EN8811H_PHY_READY == reg_value)
+        {
+            dev_info(dev, "EN8811H PHY ready!\n");
+            break;
+        }
+        retry--;
+    } while (retry);
+    if (0 == retry)
+    {
+        dev_err(dev, "EN8811H initialize fail ! reg: 0x%x\n", reg_value);
+        return -EIO;
+    }
+    /* Mode selection*/
+    dev_info(dev, "EN8811H Mode 1 !\n");
+    ret = air_mii_cl45_write(phydev, 0x1e, 0x800c, 0x0);
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl45_write(phydev, 0x1e, 0x800d, 0x0);
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl45_write(phydev, 0x1e, 0x800e, 0x1101);
+    AIR_RTN_ERR(ret);
+    ret = air_mii_cl45_write(phydev, 0x1e, 0x800f, 0x0002);
+    AIR_RTN_ERR(ret);
+
+    /* Serdes polarity */
+    pbus_value = air_buckpbus_reg_read(phydev, 0xca0f8);
+    pbus_value = (pbus_value & 0xfffffffc) | EN8811H_RX_POLARITY_NORMAL | EN8811H_TX_POLARITY_NORMAL;
+    ret = air_buckpbus_reg_write(phydev, 0xca0f8, pbus_value);
+    AIR_RTN_ERR(ret);
+    pbus_value = air_buckpbus_reg_read(phydev, 0xca0f8);
+    dev_info(dev, "0xca0f8= 0x%x\n", pbus_value);
+    pbus_value = air_buckpbus_reg_read(phydev, 0x3b3c);
+    dev_info(dev, "Version(0x3b3c)= %x\n", pbus_value);
+#if defined(AIR_LED_SUPPORT)
+    ret = en8811h_led_init(phydev);
+    if (ret < 0)
+    {
+        dev_err(dev, "en8811h_led_init fail. (ret=%d)\n", ret);
+        return ret;
+    }
+#endif
+    dev_info(dev, "EN8811H initialize OK ! (%s)\n", EN8811H_FW_VERSION);
+    return 0;
+}
+
+static int en8811h_get_autonego(struct phy_device *phydev, int *an)
+{
+    int reg;
+    reg = phy_read(phydev, MII_BMCR);
+    if (reg < 0)
+        return -EINVAL;
+    if (reg & BMCR_ANENABLE)
+        *an = AUTONEG_ENABLE;
+    else
+        *an = AUTONEG_DISABLE;
+    return 0;
+}
+
+static int en8811h_read_status(struct phy_device *phydev)
+{
+    int ret = 0, lpagb = 0, lpa = 0, common_adv_gb = 0, common_adv = 0, advgb = 0, adv = 0, reg = 0, an = AUTONEG_DISABLE, bmcr = 0;
+    int old_link = phydev->link;
+    u32 pbus_value = 0;
+    struct device *dev = phydev_dev(phydev);
+	ret = genphy_update_link(phydev);
+	if (ret)
+    {
+        dev_err(dev, "ret %d!\n", ret);
+		return ret;
+    }
+
+	if (old_link && phydev->link)
+		return 0;
+
+	phydev->speed = SPEED_UNKNOWN;
+	phydev->duplex = DUPLEX_UNKNOWN;
+	phydev->pause = 0;
+	phydev->asym_pause = 0;
+
+    reg = phy_read(phydev, MII_BMSR);
+    if (reg < 0)
+    {
+        dev_err(dev, "MII_BMSR reg %d!\n", reg);
+		return reg;
+    }
+    reg = phy_read(phydev, MII_BMSR);
+    if (reg < 0)
+    {
+        dev_err(dev, "MII_BMSR reg %d!\n", reg);
+		return reg;
+    }
+    if(reg & BMSR_LSTATUS)
+    {
+        pbus_value = air_buckpbus_reg_read(phydev, 0x109D4);
+        if (0x10 & pbus_value) {
+            phydev->speed = SPEED_2500;
+            phydev->duplex = DUPLEX_FULL;
+        }
+        else
+        {
+            ret = en8811h_get_autonego(phydev, &an);
+            if ((AUTONEG_ENABLE == an) && (0 == ret))
+            {
+                dev_dbg(dev, "AN mode!\n");
+                dev_dbg(dev, "SPEED 1000/100!\n");
+                lpagb = phy_read(phydev, MII_STAT1000);
+                if (lpagb < 0 )
+                    return lpagb;
+                advgb = phy_read(phydev, MII_CTRL1000);
+                if (adv < 0 )
+                    return adv;
+                common_adv_gb = (lpagb & (advgb << 2));
+
+                lpa = phy_read(phydev, MII_LPA);
+                if (lpa < 0 )
+                    return lpa;
+                adv = phy_read(phydev, MII_ADVERTISE);
+                if (adv < 0 )
+                    return adv;
+                common_adv = (lpa & adv);
+
+                phydev->speed = SPEED_10;
+                phydev->duplex = DUPLEX_HALF;
+                if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF))
+                {
+                    phydev->speed = SPEED_1000;
+                    if (common_adv_gb & LPA_1000FULL)
+
+                        phydev->duplex = DUPLEX_FULL;
+                }
+                else if (common_adv & (LPA_100FULL | LPA_100HALF))
+                {
+                    phydev->speed = SPEED_100;
+                    if (common_adv & LPA_100FULL)
+                        phydev->duplex = DUPLEX_FULL;
+                }
+                else
+                {
+                    if (common_adv & LPA_10FULL)
+                        phydev->duplex = DUPLEX_FULL;
+                }
+            }
+            else
+            {
+                dev_dbg(dev, "Force mode!\n");
+                bmcr = phy_read(phydev, MII_BMCR);
+
+                if (bmcr < 0)
+                    return bmcr;
+
+                if (bmcr & BMCR_FULLDPLX)
+                    phydev->duplex = DUPLEX_FULL;
+                else
+                    phydev->duplex = DUPLEX_HALF;
+
+                if (bmcr & BMCR_SPEED1000)
+                    phydev->speed = SPEED_1000;
+                else if (bmcr & BMCR_SPEED100)
+                    phydev->speed = SPEED_100;
+                else
+                    phydev->speed = SPEED_UNKNOWN;
+            }
+        }
+    }
+
+	return ret;
+}
+static struct phy_driver en8811h_driver[] = {
+{
+    .phy_id         = EN8811H_PHY_ID,
+    .name           = "Airoha EN8811H",
+    .phy_id_mask    = 0x0ffffff0,
+    .probe          = en8811h_phy_probe,
+    .read_status    = en8811h_read_status,
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(4, 5, 0))
+    .get_features   = en8811h_get_features,
+    .read_mmd       = air_mii_cl45_read,
+    .write_mmd      = air_mii_cl45_write,
+#endif
+} };
+
+int __init en8811h_phy_driver_register(void)
+{
+    int ret;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0))
+    ret = phy_driver_register(en8811h_driver);
+#else
+    ret = phy_driver_register(en8811h_driver, THIS_MODULE);
+#endif
+    if (!ret)
+        return 0;
+
+    phy_driver_unregister(en8811h_driver);
+    return ret;
+}
+
+void __exit en8811h_phy_driver_unregister(void)
+{
+    phy_driver_unregister(en8811h_driver);
+}
+
+module_init(en8811h_phy_driver_register);
+module_exit(en8811h_phy_driver_unregister);
diff --git a/drivers/net/phy/air_en8811h.h b/drivers/net/phy/air_en8811h.h
new file mode 100644
index 000000000..1c9162795
--- /dev/null
+++ b/drivers/net/phy/air_en8811h.h
@@ -0,0 +1,151 @@
+#ifndef __EN8811H_H
+#define __EN8811H_H
+
+#define EN8811H_MD32_DM             "EthMD32.dm.bin"
+#define EN8811H_MD32_DSP            "EthMD32.DSP.bin"
+
+#define EN8811H_PHY_ID1             0x03a2
+#define EN8811H_PHY_ID2             0xa411
+#define EN8811H_PHY_ID              ((EN8811H_PHY_ID1 << 16) | EN8811H_PHY_ID2)
+#define EN8811H_PHY_READY           0x02
+#define MAX_RETRY                   5
+
+#define EN8811H_TX_POLARITY_NORMAL   0x1
+#define EN8811H_TX_POLARITY_REVERSE  0x0
+
+#define EN8811H_RX_POLARITY_REVERSE  (0x1 << 1)
+#define EN8811H_RX_POLARITY_NORMAL   (0x0 << 1)
+
+
+/*
+The following led_cfg example is for reference only.
+LED0 Link 2500/Blink 2500 TxRx   (GPIO5)    <-> BASE_T_LED0,
+LED1 Link 1000/Blink 1000 TxRx   (GPIO4)    <-> BASE_T_LED1,
+LED2 Link 100 /Blink 100  TxRx   (GPIO3)    <-> BASE_T_LED2,
+*/
+/* User-defined.B */
+#define BASE_T_LED0_ON_CFG      (LED_ON_EVT_LINK_2500M)
+#define BASE_T_LED0_BLK_CFG     (LED_BLK_EVT_2500M_TX_ACT | LED_BLK_EVT_2500M_RX_ACT)
+#define BASE_T_LED1_ON_CFG      (LED_ON_EVT_LINK_1000M)
+#define BASE_T_LED1_BLK_CFG     (LED_BLK_EVT_1000M_TX_ACT | LED_BLK_EVT_1000M_RX_ACT)
+#define BASE_T_LED2_ON_CFG      (LED_ON_EVT_LINK_100M)
+#define BASE_T_LED2_BLK_CFG     (LED_BLK_EVT_100M_TX_ACT | LED_BLK_EVT_100M_RX_ACT)
+/* User-defined.E */
+
+/* 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 EN8811H_FW_VERSION          "1.1.3"
+
+#define LED_ON_CTRL(i)              (0x024 + ((i)*2))
+#define LED_ON_EN                   (1 << 15)
+#define LED_ON_POL                  (1 << 14)
+#define LED_ON_EVT_MASK             (0x1ff)
+/* LED ON Event Option.B */
+#define LED_ON_EVT_LINK_2500M       (1 << 8)
+#define LED_ON_EVT_FORCE            (1 << 6)
+#define LED_ON_EVT_LINK_DOWN        (1 << 3)
+#define LED_ON_EVT_LINK_100M        (1 << 1)
+#define LED_ON_EVT_LINK_1000M       (1 << 0)
+/* LED ON Event Option.E */
+
+#define LED_BLK_CTRL(i)             (0x025 + ((i)*2))
+#define LED_BLK_EVT_MASK            (0xfff)
+/* LED Blinking Event Option.B*/
+#define LED_BLK_EVT_2500M_RX_ACT    (1 << 11)
+#define LED_BLK_EVT_2500M_TX_ACT    (1 << 10)
+#define LED_BLK_EVT_FORCE           (1 << 9)
+#define LED_BLK_EVT_100M_RX_ACT     (1 << 3)
+#define LED_BLK_EVT_100M_TX_ACT     (1 << 2)
+#define LED_BLK_EVT_1000M_RX_ACT    (1 << 1)
+#define LED_BLK_EVT_1000M_TX_ACT    (1 << 0)
+/* LED Blinking Event Option.E*/
+#define LED_ENABLE                  1
+#define LED_DISABLE                 0
+
+#define EN8811H_LED_COUNT           3
+
+#define LED_BCR                     (0x021)
+#define LED_BCR_EXT_CTRL            (1 << 15)
+#define LED_BCR_CLK_EN              (1 << 3)
+#define LED_BCR_TIME_TEST           (1 << 2)
+#define LED_BCR_MODE_MASK           (3)
+#define LED_BCR_MODE_DISABLE        (0)
+
+#define LED_ON_DUR                  (0x022)
+#define LED_ON_DUR_MASK             (0xffff)
+
+#define LED_BLK_DUR                 (0x023)
+#define LED_BLK_DUR_MASK            (0xffff)
+
+#define UNIT_LED_BLINK_DURATION     1024
+
+#define AIR_RTN_ON_ERR(cond, err)  \
+    do { if ((cond)) return (err); } while(0)
+
+#define AIR_RTN_ERR(err)            AIR_RTN_ON_ERR(err < 0, err)
+
+#define LED_SET_EVT(reg, cod, result, bit) do         \
+    {                                                 \
+        if(reg & cod) {                               \
+            result |= bit;                            \
+        }                                             \
+    } while(0)
+
+#define LED_SET_GPIO_SEL(gpio, led, val) do           \
+    {                                                 \
+        val |= (led << (8 * (gpio % 4)));         \
+    } while(0)
+
+#define INVALID_DATA                0xffff
+#define PBUS_INVALID_DATA           0xffffffff
+
+typedef struct AIR_BASE_T_LED_CFG_S
+{
+    u16 en;
+    u16 gpio;
+    u16 pol;
+    u16 on_cfg;
+    u16 blk_cfg;
+}AIR_BASE_T_LED_CFG_T;
+typedef enum
+{
+    AIR_LED2_GPIO3 = 3,
+    AIR_LED1_GPIO4,
+    AIR_LED0_GPIO5,
+    AIR_LED_LAST
+} AIR_LED_GPIO;
+
+typedef enum {
+    AIR_BASE_T_LED0,
+    AIR_BASE_T_LED1,
+    AIR_BASE_T_LED2,
+    AIR_BASE_T_LED3
+}AIR_BASE_T_LED;
+
+typedef enum
+{
+    AIR_LED_BLK_DUR_32M,
+    AIR_LED_BLK_DUR_64M,
+    AIR_LED_BLK_DUR_128M,
+    AIR_LED_BLK_DUR_256M,
+    AIR_LED_BLK_DUR_512M,
+    AIR_LED_BLK_DUR_1024M,
+    AIR_LED_BLK_DUR_LAST
+} AIR_LED_BLK_DUT_T;
+
+typedef enum
+{
+    AIR_ACTIVE_LOW,
+    AIR_ACTIVE_HIGH,
+} AIR_LED_POLARITY;
+typedef enum
+{
+    AIR_LED_MODE_DISABLE,
+    AIR_LED_MODE_USER_DEFINE,
+    AIR_LED_MODE_LAST
+} AIR_LED_MODE_T;
+
+#endif /* End of __EN8811H_MD32_H */
-- 
2.34.1