diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig
index 2de5494e7c22..7b585bc7db9a 100644
--- a/drivers/iio/humidity/Kconfig
+++ b/drivers/iio/humidity/Kconfig
@@ -48,6 +48,17 @@ config HDC2010
 	  To compile this driver as a module, choose M here: the module
 	  will be called hdc2010.
 
+config HDC3020
+	tristate "TI HDC3020 relative humidity and temperature sensor"
+	depends on I2C
+	help
+	  Say yes here to build support for the Texas Instruments
+	  HDC3020,HDC3021 and HDC3022 relative humidity and temperature
+	  sensors.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called hdc3020.
+
 config HID_SENSOR_HUMIDITY
 	tristate "HID Environmental humidity sensor"
 	depends on HID_SENSOR_HUB
diff --git a/drivers/iio/humidity/Makefile b/drivers/iio/humidity/Makefile
index f19ff3de97c5..5fbeef299f61 100644
--- a/drivers/iio/humidity/Makefile
+++ b/drivers/iio/humidity/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_AM2315) += am2315.o
 obj-$(CONFIG_DHT11) += dht11.o
 obj-$(CONFIG_HDC100X) += hdc100x.o
 obj-$(CONFIG_HDC2010) += hdc2010.o
+obj-$(CONFIG_HDC3020) += hdc3020.o
 obj-$(CONFIG_HID_SENSOR_HUMIDITY) += hid-sensor-humidity.o
 
 hts221-y := hts221_core.o \
diff --git a/drivers/iio/humidity/hdc3020.c b/drivers/iio/humidity/hdc3020.c
new file mode 100644
index 000000000000..e9df4ef4f02f
--- /dev/null
+++ b/drivers/iio/humidity/hdc3020.c
@@ -0,0 +1,513 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * hdc3020.c - Support for the TI HDC3020,HDC3021 and HDC3022
+ * temperature + relative humidity sensors
+ *
+ * Copyright (C) 2023
+ *
+ * Datasheet: https://www.ti.com/lit/ds/symlink/hdc3020.pdf
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#define READ_RETRY_TIMES 10
+#define BUSY_DELAY 10
+
+static const u8 HDC3020_S_AUTO_10HZ_MOD0[2] = { 0x27, 0x37 };
+
+static const u8 HDC3020_EXIT_AUTO[2] = { 0x30, 0x93 };
+
+static const u8 HDC3020_R_T_RH_AUTO[2] = { 0xE0, 0x00 };
+static const u8 HDC3020_R_T_LOW_AUTO[2] = { 0xE0, 0x02 };
+static const u8 HDC3020_R_T_HIGH_AUTO[2] = { 0xE0, 0x03 };
+static const u8 HDC3020_R_RH_LOW_AUTO[2] = { 0xE0, 0x04 };
+static const u8 HDC3020_R_RH_HIGH_AUTO[2] = { 0xE0, 0x05 };
+
+static const u8 HDC3020_ENABLE_HEATER[2] = { 0x30, 0x6D };
+static const u8 HDC3020_DISABLE_HEATER[2] = { 0x30, 0x66 };
+
+static const u8 HDC3020_HEATER_FULL[5] = { 0x30, 0x6E, 0x3F, 0xFF, 0x06 };
+static const u8 HDC3020_HEATER_HALF[5] = { 0x30, 0x6E, 0x03, 0xFF, 0x00 };
+static const u8 HDC3020_HEATER_QUARTER[5] = { 0x30, 0x6E, 0x00, 0x9F, 0x96 };
+
+struct hdc3020_data {
+	struct i2c_client *client;
+	struct mutex lock;
+
+	int temp;
+	int humidity;
+	int temp_high_peak;
+	int temp_low_peak;
+	int humidity_high_peak;
+	int humidity_low_peak;
+};
+
+/*
+ * For heater
+ * 0 -> turn off
+ * 1 -> 1/4 full power
+ * 2 -> 1/2 full power
+ * 3 -> full power
+ */
+static IIO_CONST_ATTR(out_current_heater_raw_available, "0 1 2 3");
+
+static struct attribute *hdc3020_attributes[] = {
+	&iio_const_attr_out_current_heater_raw_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group hdc3020_attribute_group = {
+	.attrs = hdc3020_attributes,
+};
+
+static const struct iio_chan_spec hdc3020_channels[] = {
+	{
+	 .type = IIO_TEMP,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+	 BIT(IIO_CHAN_INFO_SCALE),
+	  },
+	{
+	 .type = IIO_TEMP,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_PEAK),
+	 .extend_name = "high",
+	  },
+	{
+	 .type = IIO_TEMP,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_PEAK),
+	 .extend_name = "low",
+	  },
+	{
+	 .type = IIO_HUMIDITYRELATIVE,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+	 BIT(IIO_CHAN_INFO_SCALE),
+	  },
+	{
+	 .type = IIO_HUMIDITYRELATIVE,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_PEAK),
+	 .extend_name = "high",
+	  },
+	{
+	 .type = IIO_HUMIDITYRELATIVE,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_PEAK),
+	 .extend_name = "low",
+	  },
+	{
+	 .type = IIO_CURRENT,
+	 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+	 .extend_name = "heater",
+	 .output = 1,
+	  },
+};
+
+static int hdc3020_write_bytes(struct hdc3020_data *data, const u8 *buf,
+			       u8 len)
+{
+	int ret, cnt;
+	struct i2c_msg msg;
+	struct i2c_client *client = data->client;
+
+	msg.addr = client->addr;
+	msg.flags = 0;
+	msg.buf = (char *)buf;
+	msg.len = len;
+
+	/*
+	 * During the measurement process, HDC3020 will not return data.
+	 * So wait for a while and try again
+	 */
+	ret = 0;
+	cnt = 0;
+
+	while (cnt < READ_RETRY_TIMES) {
+		ret = i2c_transfer(client->adapter, &msg, 1);
+		if (ret == 1) {
+			ret = 0;
+			break;
+		}
+
+		mdelay(BUSY_DELAY);
+		cnt++;
+	}
+	if (cnt == READ_RETRY_TIMES) {
+		dev_err(&client->dev, "Could not write sensor command\n");
+		ret = -EREMOTEIO;
+	}
+
+	return ret;
+}
+
+static int hdc3020_read_bytes(struct hdc3020_data *data, const u8 *buf,
+			      void *val, int len)
+{
+	int ret, cnt;
+	struct i2c_msg msg[2];
+	struct i2c_client *client = data->client;
+
+	msg[0].addr = client->addr;
+	msg[0].flags = 0;
+	msg[0].buf = (char *)buf;
+	msg[0].len = 2;
+
+	msg[1].addr = client->addr;
+	msg[1].flags = I2C_M_RD;
+	msg[1].buf = val;
+	msg[1].len = len;
+
+	/*
+	 * During the measurement process, HDC3020 will not return data.
+	 * So wait for a while and try again
+	 */
+	ret = 0;
+	cnt = 0;
+
+	while (cnt < READ_RETRY_TIMES) {
+		ret = i2c_transfer(client->adapter, msg, 2);
+		if (ret == 2) {
+			ret = 0;
+			break;
+		}
+		mdelay(BUSY_DELAY);
+		cnt++;
+	}
+
+	if (cnt == READ_RETRY_TIMES) {
+		dev_err(&client->dev, "Could not read sensor data\n");
+		ret = -EREMOTEIO;
+	}
+
+	return ret;
+}
+
+/*
+ * Returns temperature in DegC, resolution is 0.01 DegC.  Output value of
+ * "2608" equals 26.08 DegC.
+ * Returns humidity in percent, resolution is 0.1 percent. Output value of
+ * "323" represents 323/10 = 32.3 %RH.
+ */
+static int hdc3020_read_measurement(struct hdc3020_data *data)
+{
+	int ret;
+	u8 buf[6];
+
+	ret = hdc3020_read_bytes(data, HDC3020_R_T_RH_AUTO, (void *)buf, 6);
+	if (ret < 0)
+		return ret;
+	data->temp = (((int)buf[0] << 8) | buf[1]) * 100 * 175 / 65535 - 4500;
+	data->humidity = (((int)buf[3] << 8) | buf[4]) * 10 * 100 / 65535;
+	return 0;
+}
+
+/*
+ * After exiting the automatic measurement mode or resetting, the peak
+ * value will be reset to the default value
+ */
+static int hdc3020_read_high_peak_t(struct hdc3020_data *data)
+{
+	int ret;
+	u8 buf[3];
+
+	ret = hdc3020_read_bytes(data, HDC3020_R_T_HIGH_AUTO, (void *)buf, 3);
+	if (ret < 0)
+		return ret;
+	data->temp_high_peak =
+	    (((int)buf[0] << 8) | buf[1]) * 100 * 175 / 65535 - 4500;
+
+	return 0;
+}
+
+static int hdc3020_read_low_peak_t(struct hdc3020_data *data)
+{
+	int ret;
+	u8 buf[3];
+
+	ret = hdc3020_read_bytes(data, HDC3020_R_T_LOW_AUTO, (void *)buf, 3);
+	if (ret < 0)
+		return ret;
+	data->temp_low_peak =
+	    (((int)buf[0] << 8) | buf[1]) * 100 * 175 / 65535 - 4500;
+
+	return 0;
+}
+
+/*
+ * After exiting the automatic measurement mode or resetting, the peak
+ * value will be reset to the default value
+ */
+static int hdc3020_read_high_peak_rh(struct hdc3020_data *data)
+{
+	int ret;
+	u8 buf[3];
+
+	ret = hdc3020_read_bytes(data, HDC3020_R_RH_HIGH_AUTO, (void *)buf, 3);
+	if (ret < 0)
+		return ret;
+	data->humidity_high_peak =
+	    (((int)buf[0] << 8) | buf[1]) * 10 * 100 / 65535;
+
+	return 0;
+}
+
+static int hdc3020_read_low_peak_rh(struct hdc3020_data *data)
+{
+	int ret;
+	u8 buf[3];
+
+	ret = hdc3020_read_bytes(data, HDC3020_R_RH_LOW_AUTO, (void *)buf, 3);
+	if (ret < 0)
+		return ret;
+	data->humidity_low_peak =
+	    (((int)buf[0] << 8) | buf[1]) * 10 * 100 / 65535;
+
+	return 0;
+}
+
+static int hdc3020_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int *val,
+			    int *val2, long mask)
+{
+	struct hdc3020_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:{
+			int ret;
+
+			ret = iio_device_claim_direct_mode(indio_dev);
+
+			if (ret)
+				return ret;
+
+			mutex_lock(&data->lock);
+			ret = hdc3020_read_measurement(data);
+			mutex_unlock(&data->lock);
+			iio_device_release_direct_mode(indio_dev);
+
+			if (ret < 0)
+				return ret;
+			if (chan->type == IIO_TEMP)
+				*val = data->temp;
+			else if (chan->type == IIO_HUMIDITYRELATIVE)
+				*val = data->humidity;
+			return IIO_VAL_INT;
+		}
+	case IIO_CHAN_INFO_PEAK:{
+			int ret;
+
+			ret = iio_device_claim_direct_mode(indio_dev);
+
+			if (ret)
+				return ret;
+
+			if (chan->type == IIO_TEMP) {
+				if (strcmp(chan->extend_name, "high") == 0) {
+					mutex_lock(&data->lock);
+					ret = hdc3020_read_high_peak_t(data);
+					mutex_unlock(&data->lock);
+					if (ret < 0)
+						return ret;
+					*val = data->temp_high_peak;
+				} else if (strcmp(chan->extend_name, "low") ==
+					   0) {
+					mutex_lock(&data->lock);
+					ret = hdc3020_read_low_peak_t(data);
+					mutex_unlock(&data->lock);
+					if (ret < 0)
+						return ret;
+					*val = data->temp_low_peak;
+				}
+			} else if (chan->type == IIO_HUMIDITYRELATIVE) {
+				if (strcmp(chan->extend_name, "high") == 0) {
+					mutex_lock(&data->lock);
+					ret = hdc3020_read_high_peak_rh(data);
+					mutex_unlock(&data->lock);
+					if (ret < 0)
+						return ret;
+					*val = data->humidity_high_peak;
+				} else if (strcmp(chan->extend_name, "low") ==
+					   0) {
+					mutex_lock(&data->lock);
+					ret = hdc3020_read_low_peak_rh(data);
+					mutex_unlock(&data->lock);
+					if (ret < 0)
+						return ret;
+					*val = data->humidity_low_peak;
+				}
+			}
+			iio_device_release_direct_mode(indio_dev);
+			return IIO_VAL_INT;
+		}
+	case IIO_CHAN_INFO_SCALE:
+		*val2 = 65536;
+		if (chan->type == IIO_TEMP)
+			*val = 1750;
+		else
+			*val = 1000;
+		return IIO_VAL_FRACTIONAL;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int hdc3020_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct hdc3020_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type != IIO_CURRENT || val2 != 0)
+			return -EINVAL;
+
+		switch (val) {
+		case 1:
+			mutex_lock(&data->lock);
+			ret =
+			    hdc3020_write_bytes(data, HDC3020_HEATER_QUARTER,
+						5);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			mutex_lock(&data->lock);
+			ret =
+			    hdc3020_write_bytes(data, HDC3020_ENABLE_HEATER, 2);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			break;
+		case 2:
+			mutex_lock(&data->lock);
+			ret = hdc3020_write_bytes(data, HDC3020_HEATER_HALF, 5);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			mutex_lock(&data->lock);
+			ret =
+			    hdc3020_write_bytes(data, HDC3020_ENABLE_HEATER, 2);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			break;
+		case 3:
+			mutex_lock(&data->lock);
+			ret = hdc3020_write_bytes(data, HDC3020_HEATER_FULL, 5);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			mutex_lock(&data->lock);
+			ret =
+			    hdc3020_write_bytes(data, HDC3020_ENABLE_HEATER, 2);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			break;
+		case 0:
+			mutex_lock(&data->lock);
+			ret =
+			    hdc3020_write_bytes(data, HDC3020_DISABLE_HEATER,
+						2);
+			mutex_unlock(&data->lock);
+			if (ret < 0)
+				return ret;
+			break;
+		default:
+			return -EINVAL;
+		}
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info hdc3020_info = {
+	.read_raw = hdc3020_read_raw,
+	.write_raw = hdc3020_write_raw,
+	.attrs = &hdc3020_attribute_group,
+};
+
+static int hdc3020_probe(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev;
+	struct hdc3020_data *data;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+	mutex_init(&data->lock);
+
+	indio_dev->name = "hdc3020";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &hdc3020_info;
+
+	indio_dev->channels = hdc3020_channels;
+	indio_dev->num_channels = ARRAY_SIZE(hdc3020_channels);
+
+	ret = hdc3020_write_bytes(data, HDC3020_S_AUTO_10HZ_MOD0, 2);
+	if (ret) {
+		dev_err(&client->dev, "Unable to set up measurement\n");
+		return ret;
+	}
+
+	return iio_device_register(indio_dev);
+}
+
+static void hdc3020_remove(struct i2c_client *client)
+{
+	int ret;
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct hdc3020_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	/* Disable Automatic Measurement Mode */
+	ret = hdc3020_write_bytes(data, HDC3020_EXIT_AUTO, 2);
+	if (ret)
+		dev_err(&client->dev, "Unable to stop measurement\n");
+}
+
+static const struct i2c_device_id hdc3020_id[] = {
+	{ "hdc3020" },
+	{ "hdc3021" },
+	{ "hdc3022" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, hdc3020_id);
+
+static const struct of_device_id hdc3020_dt_ids[] = {
+	{.compatible = "ti,hdc3020" },
+	{.compatible = "ti,hdc3021", "ti,hdc3020" },
+	{.compatible = "ti,hdc3022", "ti,hdc3020" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, hdc3020_dt_ids);
+
+static struct i2c_driver hdc3020_driver = {
+	.driver = {
+		   .name = "hdc3020",
+		   .of_match_table = hdc3020_dt_ids,
+		    },
+	.probe = hdc3020_probe,
+	.remove = hdc3020_remove,
+	.id_table = hdc3020_id,
+};
+
+module_i2c_driver(hdc3020_driver);
+
+MODULE_AUTHOR("Li peiyu <579lpy@gmail.com>");
+MODULE_DESCRIPTION("TI HDC3020 humidity and temperature sensor driver");
+MODULE_LICENSE("GPL");
