diff --git a/misc/config_tools/board_inspector/board_inspector.py b/misc/config_tools/board_inspector/board_inspector.py
index 43485e8c2..a2373e2e8 100755
--- a/misc/config_tools/board_inspector/board_inspector.py
+++ b/misc/config_tools/board_inspector/board_inspector.py
@@ -102,6 +102,7 @@ def main(board_name, board_xml, args):
         root_node.append(lxml.etree.Element("memory"))
         root_node.append(lxml.etree.Element("ioapics"))
         root_node.append(lxml.etree.Element("devices"))
+        root_node.append(lxml.etree.Element("device-classes"))
 
         extractors_path = os.path.join(script_dir, "extractors")
         extractors = [f for f in os.listdir(extractors_path) if f[:2].isdigit()]
diff --git a/misc/config_tools/board_inspector/extractors/70-device-classes.py b/misc/config_tools/board_inspector/extractors/70-device-classes.py
new file mode 100644
index 000000000..89ed6a18f
--- /dev/null
+++ b/misc/config_tools/board_inspector/extractors/70-device-classes.py
@@ -0,0 +1,42 @@
+# Copyright (C) 2022 Intel Corporation.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import re, os
+import logging
+from extractors.helpers import add_child, get_node
+
+SYS_DEVICES_CLASS_PATH = "/sys/class/input/"
+
+def get_input_ids():
+    input_ids = list()
+    root_regex = re.compile("input([0-9]+)")
+    for root in filter(lambda x: x.startswith("input"), os.listdir(SYS_DEVICES_CLASS_PATH)):
+        m = root_regex.match(root)
+        if m:
+            input_ids.append(int(m.group(1)))
+    return sorted(input_ids)
+
+def extract_topology(device_classes_node):
+    inputs_node = add_child(device_classes_node, "inputs", None)
+    input_ids = get_input_ids()
+    for id in input_ids:
+        input_node = add_child(inputs_node, "input", None)
+        try:
+            with open("/sys/class/input/input{}/name".format(id), "r") as f:
+                res = f.read().strip()
+                add_child(input_node, "name", res)
+        except Exception as e:
+            logging.warning(f"Failed to read the data of /sys/class/input/input{id}/name: {e}")
+
+        try:
+            with open("/sys/class/input/input{}/phys".format(id), "r") as f:
+                res = f.read().strip()
+                add_child(input_node, "phys", res)
+        except Exception as e:
+            logging.warning(f"Failed to read the data of /sys/class/input/input{id}/phys: {e}")
+
+def extract(args, board_etree):
+    device_classes_node = get_node(board_etree, "//device-classes")
+    extract_topology(device_classes_node)
\ No newline at end of file