diff --git a/include/net/openthread.h b/include/net/openthread.h
index 99f1652197c..07f0a40fceb 100644
--- a/include/net/openthread.h
+++ b/include/net/openthread.h
@@ -4,9 +4,20 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/** @file
+ * @brief OpenThread l2 stack public header
+ */
+
 #ifndef ZEPHYR_INCLUDE_NET_OPENTHREAD_H_
 #define ZEPHYR_INCLUDE_NET_OPENTHREAD_H_
 
+/**
+ * @brief OpenThread l2 stack api
+ * @defgroup OpenThread l2 layer
+ * @ingroup networking
+ * @{
+ */
+
 #include <kernel.h>
 
 #include <net/net_if.h>
@@ -17,27 +28,80 @@
 extern "C" {
 #endif
 
+/**
+ * @cond INTERNAL_HIDDEN
+ */
+/**
+ * @brief Type of pkt_list
+ */
 struct pkt_list_elem {
 	struct net_pkt *pkt;
 };
 
+/**
+ * @brief OpenThread l2 private data.
+ */
 struct openthread_context {
+	/** Pointer to OpenThread stack instance */
 	otInstance *instance;
+
+	/** Pointer to OpenThread network interface */
 	struct net_if *iface;
+
+	/** Index indicates the head of pkt_list ring buffer */
 	uint16_t pkt_list_in_idx;
+
+	/** Index indicates the tail of pkt_list ring buffer */
 	uint16_t pkt_list_out_idx;
+
+	/** Flag indicates that pkt_list is full */
 	uint8_t pkt_list_full;
+
+	/** Array for storing net_pkt for OpenThread internal usage */
 	struct pkt_list_elem pkt_list[CONFIG_OPENTHREAD_PKT_LIST_SIZE];
 };
+/**
+ * INTERNAL_HIDDEN @endcond
+ */
 
+/**
+ * @brief Sets function which will be called when certain configuration or state
+ * changes within OpenThread.
+ *
+ * @param cb function to call in callback procedure.
+ */
 void openthread_set_state_changed_cb(otStateChangedCallback cb);
 
+/**
+ * @brief Get OpenThread thread identification.
+ */
 k_tid_t openthread_thread_id_get(void);
 
+/**
+ * @brief Get pointer to default OpenThread context.
+ *
+ * @retval !NULL On success.
+ * @retval NULL  On failure.
+ */
 struct openthread_context *openthread_get_default_context(void);
 
+/**
+ * @brief Get pointer to default OpenThread instance.
+ *
+ * @retval !NULL On success.
+ * @retval NULL  On failure.
+ */
 struct otInstance *openthread_get_default_instance(void);
 
+/**
+ * @brief Starts the OpenThread network.
+ *
+ * @details Depends on active settings: it uses stored network configuration,
+ * start joining procedure or uses default network configuration. Additionally
+ * when the device is MTD, it sets the SED mode to properly attach the network.
+ *
+ * @param ot_context
+ */
 void openthread_start(struct openthread_context *ot_context);
 
 #define OPENTHREAD_L2_CTX_TYPE struct openthread_context
@@ -46,4 +110,8 @@ void openthread_start(struct openthread_context *ot_context);
 }
 #endif
 
+/**
+ * @}
+ */
+
 #endif /* ZEPHYR_INCLUDE_NET_OPENTHREAD_H_ */