diff mbox series

[v4,7/8] doc: rng: Add documentation for the rng command

Message ID 20220309122800.3940001-8-sughosh.ganu@linaro.org
State Superseded
Headers show
Series tpm: rng: Move TPM RNG functionality to driver model | expand

Commit Message

Sughosh Ganu March 9, 2022, 12:27 p.m. UTC 
Add a usage document for the 'rng' u-boot command.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

Changes since V3: None

 doc/usage/index.rst |  1 +
 doc/usage/rng.rst   | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 doc/usage/rng.rst
diff mbox series

Patch

diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index 0aacf531b2..5712a924ae 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -45,6 +45,7 @@  Shell commands
    pstore
    qfw
    reset
+   rng
    sbi
    sf
    scp03
diff --git a/doc/usage/rng.rst b/doc/usage/rng.rst
new file mode 100644
index 0000000000..87758f7d66
--- /dev/null
+++ b/doc/usage/rng.rst
@@ -0,0 +1,25 @@ 
+.. SPDX-License-Identifier: GPL-2.0+
+
+rng command
+===========
+
+Synopsis
+--------
+
+::
+
+    rng [devnum [n]]
+
+Description
+-----------
+
+The *rng* command reads the random number generator(RNG) device and
+prints the random bytes read on the console.
+
+devnum
+    The RNG device from which the random bytes are to be
+    read. Defaults to 0.
+
+n
+    Number of random bytes to be read and displayed on the
+    console. Default value is 0x40.