diff --git a/src/drivers/i2c/generic/chip.h b/src/drivers/i2c/generic/chip.h
index 0942d00fc1..8e13ffc7bb 100644
--- a/src/drivers/i2c/generic/chip.h
+++ b/src/drivers/i2c/generic/chip.h
@@ -11,6 +11,7 @@
 struct drivers_i2c_generic_config {
 	const char *hid;	/* ACPI _HID (required) */
 	const char *cid;	/* ACPI _CID */
+	const char *sub;	/* ACPI _SUB */
 	const char *name;	/* ACPI Device Name */
 	const char *desc;	/* Device Description */
 	unsigned int uid;		/* ACPI _UID */
diff --git a/src/drivers/i2c/generic/generic.c b/src/drivers/i2c/generic/generic.c
index d1baeb76f4..1a3ec40c7a 100644
--- a/src/drivers/i2c/generic/generic.c
+++ b/src/drivers/i2c/generic/generic.c
@@ -83,6 +83,8 @@ void i2c_generic_fill_ssdt(const struct device *dev,
 	acpigen_write_name_string("_HID", config->hid);
 	if (config->cid)
 		acpigen_write_name_string("_CID", config->cid);
+	if (config->sub)
+		acpigen_write_name_string("_SUB", config->sub);
 	acpigen_write_name_integer("_UID", config->uid);
 	if (config->desc)
 		acpigen_write_name_string("_DDN", config->desc);