[PATCH v4 2/2] doc: man-page for optee commands

[Venkatesh Yadav Abbarapu]

Provide a man-page for the optee command.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at amd.com>
---
 doc/usage/cmd/optee.rst | 66 +++++++++++++++++++++++++++++++++++++++++
 doc/usage/index.rst     |  1 +
 2 files changed, 67 insertions(+)
 create mode 100644 doc/usage/cmd/optee.rst

diff --git a/doc/usage/cmd/optee.rst b/doc/usage/cmd/optee.rst
new file mode 100644
index 00000000000..53e36853742
--- /dev/null
+++ b/doc/usage/cmd/optee.rst
@@ -0,0 +1,66 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+.. index::
+   single: optee (command)
+
+optee command
+=============
+
+Synopsis
+--------
+
+::
+
+    optee hello
+    optee hello <value>
+
+Description
+-----------
+
+This is a very simple optee hello command which is going to
+increment an integer value.
+
+value
+	value to be passed which is going to increment
+
+To enable the OP-TEE OS side HELLO WORLD example please refer
+https://optee.readthedocs.io/en/latest/building/gits/optee_examples/optee_examples.html
+
+Examples
+--------
+
+::
+
+	==> optee hello
+	The Hello World TA is going to be called
+	D/TA:  TA_CreateEntryPoint:39 has been called
+	I/TA: Hello World!
+	TA value: 0x0
+	D/TA:  inc_value:105 has been called
+	I/TA: Got value: 0 from NW
+	I/TA: Increase value to: 1
+	TA value: 0x1
+	I/TA: Goodbye!
+	D/TA:  TA_DestroyEntryPoint:50 has been called
+
+	===> optee hello 74
+	The Hello World TA is going to be called
+	D/TA:  TA_CreateEntryPoint:39 has been called
+	I/TA: Hello World!
+	TA value: 0x74
+	D/TA:  inc_value:105 has been called
+	I/TA: Got value: 116 from NW
+	I/TA: Increase value to: 117
+	TA value: 0x75
+	I/TA: Goodbye!
+	D/TA:  TA_DestroyEntryPoint:50 has been called
+
+Configuration
+-------------
+
+The optee command is enabled by CONFIG_OPTEE=y and CONFIG_CMD_OPTEE=y.
+
+Return value
+------------
+
+The return value $? is 0 (true) if the command succeeds, 1 (false) otherwise.
diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index cb7a23f1170..4dd00f002cd 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -92,6 +92,7 @@ Shell commands
    cmd/msr
    cmd/mtest
    cmd/mtrr
+   cmd/optee
    cmd/panic
    cmd/part
    cmd/pause
-- 
2.34.1