diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 7c7362e28821..5377f72a6262 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -65,6 +65,7 @@
 #define VCNL4200_PS_DATA	0x08 /* Proximity data */
 #define VCNL4200_AL_DATA	0x09 /* Ambient light data */
 #define VCNL4040_INT_FLAGS	0x0b /* Interrupt register */
+#define VCNL4200_INT_FLAGS	0x0d /* Interrupt register */
 #define VCNL4200_DEV_ID		0x0e /* Device ID, slave address and version */
 
 #define VCNL4040_DEV_ID		0x0c /* Device ID and version */
@@ -164,6 +165,8 @@ struct vcnl4000_chip_spec {
 	int (*set_power_state)(struct vcnl4000_data *data, bool on);
 	irqreturn_t (*irq_thread)(int irq, void *priv);
 	irqreturn_t (*trig_buffer_func)(int irq, void *priv);
+
+	u8 int_reg;
 };
 
 static const struct i2c_device_id vcnl4000_id[] = {
@@ -1005,7 +1008,7 @@ static irqreturn_t vcnl4040_irq_thread(int irq, void *p)
 	struct vcnl4000_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = i2c_smbus_read_word_data(data->client, VCNL4040_INT_FLAGS);
+	ret = i2c_smbus_read_word_data(data->client, data->chip_spec->int_reg);
 	if (ret < 0)
 		return IRQ_HANDLED;
 
@@ -1314,6 +1317,7 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
 		.num_channels = ARRAY_SIZE(vcnl4040_channels),
 		.info = &vcnl4040_info,
 		.irq_thread = vcnl4040_irq_thread,
+		.int_reg = VCNL4040_INT_FLAGS,
 	},
 	[VCNL4200] = {
 		.prod = "VCNL4200",
@@ -1321,9 +1325,11 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
 		.measure_light = vcnl4200_measure_light,
 		.measure_proximity = vcnl4200_measure_proximity,
 		.set_power_state = vcnl4200_set_power_state,
-		.channels = vcnl4000_channels,
+		.channels = vcnl4040_channels,
 		.num_channels = ARRAY_SIZE(vcnl4000_channels),
-		.info = &vcnl4000_info,
+		.info = &vcnl4040_info,
+		.irq_thread = vcnl4040_irq_thread,
+		.int_reg = VCNL4200_INT_FLAGS,
 	},
 };