diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 890f08be7244..7902a9a72681 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -28,6 +28,7 @@ config SENSORS_PMBUS
 
 config SENSORS_ADM1266
 	tristate "Analog Devices ADM1266 Sequencer"
+	select CRC8
 	help
 	  If you say yes here you get hardware monitoring support for Analog
 	  Devices ADM1266 Cascadable Super Sequencer.
diff --git a/drivers/hwmon/pmbus/adm1266.c b/drivers/hwmon/pmbus/adm1266.c
index 9c75958c2969..d85835091a40 100644
--- a/drivers/hwmon/pmbus/adm1266.c
+++ b/drivers/hwmon/pmbus/adm1266.c
@@ -6,6 +6,7 @@
  * Copyright 2020 Analog Devices Inc.
  */
 
+#include <linux/crc8.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -13,11 +14,85 @@
 #include "pmbus.h"
 #include <linux/slab.h>
 
+#define ADM1266_PMBUS_BLOCK_MAX		255
+
 struct adm1266_data {
 	struct pmbus_driver_info info;
 	struct i2c_client *client;
+	struct mutex buf_mutex;
+	u8 write_buf[ADM1266_PMBUS_BLOCK_MAX + 1] ____cacheline_aligned;
+	u8 read_buf[ADM1266_PMBUS_BLOCK_MAX + 1] ____cacheline_aligned;
 };
 
+DECLARE_CRC8_TABLE(pmbus_crc_table);
+
+/*
+ * Different from Block Read as it sends data and waits for the slave to
+ * return a value dependent on that data. The protocol is simply a Write Block
+ * followed by a Read Block without the Read-Block command field and the
+ * Write-Block STOP bit.
+ */
+static int adm1266_pmbus_block_xfer(struct adm1266_data *data, u8 cmd, u8 w_len, u8 *data_w,
+				    u8 *data_r)
+{
+	struct i2c_client *client = data->client;
+	struct i2c_msg msgs[2] = {
+		{
+			.addr = client->addr,
+			.flags = I2C_M_DMA_SAFE,
+			.buf = data->write_buf,
+			.len = w_len + 2,
+		},
+		{
+			.addr = client->addr,
+			.flags = I2C_M_RD | I2C_M_DMA_SAFE,
+			.buf = data->read_buf,
+			.len = ADM1266_PMBUS_BLOCK_MAX + 2,
+		}
+	};
+	u8 addr;
+	u8 crc;
+	int ret;
+
+	mutex_lock(&data->buf_mutex);
+
+	msgs[0].buf[0] = cmd;
+	msgs[0].buf[1] = w_len;
+	memcpy(&msgs[0].buf[2], data_w, w_len);
+
+	ret = i2c_transfer(client->adapter, msgs, 2);
+	if (ret != 2) {
+		if (ret >= 0)
+			ret = -EPROTO;
+
+		mutex_unlock(&data->buf_mutex);
+
+		return ret;
+	}
+
+	if (client->flags & I2C_CLIENT_PEC) {
+		addr = i2c_8bit_addr_from_msg(&msgs[0]);
+		crc = crc8(pmbus_crc_table, &addr, 1, 0);
+		crc = crc8(pmbus_crc_table, msgs[0].buf,  msgs[0].len, crc);
+
+		addr = i2c_8bit_addr_from_msg(&msgs[1]);
+		crc = crc8(pmbus_crc_table, &addr, 1, crc);
+		crc = crc8(pmbus_crc_table, msgs[1].buf,  msgs[1].buf[0] + 1, crc);
+
+		if (crc != msgs[1].buf[msgs[1].buf[0] + 1]) {
+			mutex_unlock(&data->buf_mutex);
+			return -EBADMSG;
+		}
+	}
+
+	memcpy(data_r, &msgs[1].buf[1], msgs[1].buf[0]);
+
+	ret = msgs[1].buf[0];
+	mutex_unlock(&data->buf_mutex);
+
+	return ret;
+}
+
 static int adm1266_probe(struct i2c_client *client)
 {
 	struct adm1266_data *data;
@@ -33,6 +108,9 @@ static int adm1266_probe(struct i2c_client *client)
 	for (i = 0; i < data->info.pages; i++)
 		data->info.func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
 
+	crc8_populate_msb(pmbus_crc_table, 0x7);
+	mutex_init(&data->buf_mutex);
+
 	return pmbus_do_probe(client, &data->info);
 }