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+.. SPDX-License-Identifier: GPL-2.0+
+
+.. index::
+   single: rng (command)
+
+rng command
+===========
+
+Synopsis
+--------
+
+::
+
+    rng list
+    rng [dev] [n]
+
+rng list
+--------
+
+List all the probed rng devices.
+
+rng [dev] [n]
+-------------
+
+The *rng* command reads the random number generator(RNG) device and
+prints the random bytes read on the console. A maximum of 64 bytes can
+be read in one invocation of the command.
+
+dev
+    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. Max value is 0x40.