diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h
index 587f2512884818f1c5c9845c79bd2bfee3957e3e..a0cb587006d5ab4f27ba63534a3b5a4a2188b814 100644
--- a/include/linux/mei_aux.h
+++ b/include/linux/mei_aux.h
@@ -7,6 +7,12 @@
 
 #include <linux/auxiliary_bus.h>
 
+/**
+ * struct mei_aux_device - mei auxiliary device
+ * @aux_dev: - auxiliary device object
+ * @irq: interrupt driving the mei auxiliary device
+ * @bar: mmio resource bar reserved to mei auxiliary device
+ */
 struct mei_aux_device {
 	struct auxiliary_device aux_dev;
 	int irq;