Signed-off-by: Husni Faiz <ahamedhusn...@gmail.com>
---
libbsd/device_driver.rst | 30 ++++++++++++++++++++++++++++++
libbsd/index.rst | 1 +
2 files changed, 31 insertions(+)
create mode 100644 libbsd/device_driver.rst
diff --git a/libbsd/device_driver.rst b/libbsd/device_driver.rst
new file mode 100644
index 0000000..7562866
--- /dev/null
+++ b/libbsd/device_driver.rst
@@ -0,0 +1,30 @@
+.. SPDX-License-Identifier: CC-BY-SA-4.0
+
+Device Driver
+#################
+
+Introduction
+============
+
+USB
+===
+
+USB Template
+------------
+
+USB Template driver is initialized based on the value of `hw.usb.template`
+sysctl variable. To set the variable use the `sysctlbyname` system call
+as follows in your application,
+
+ .. code-block:: c
+
+ int template = 1;
+ sysctlbyname("hw.usb.template", NULL, NULL, &template,
sizeof(template));
+
+You can set the variable at runtime using the shell with the syctl utility.
+
+ .. code-block:: shell
+
+ sysctl hw.usb.template=1
+
+NOTE: Template 1 is the CDC Ethernet.
diff --git a/libbsd/index.rst b/libbsd/index.rst
index f790070..1ee349a 100644
--- a/libbsd/index.rst
+++ b/libbsd/index.rst
@@ -21,3 +21,4 @@ RTEMS LibBSD User Manual (|version|).
introduction
quick_start
+ device_driver
--
2.25.1
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