--- /dev/null
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright 2018 NXP
+
+
+NXP CAAM JOB RING (caam_jr)
+===========================
+
+The caam_jr PMD provides poll mode crypto driver support for NXP SEC 4.x+ (CAAM)
+hardware accelerator. More information is available at:
+
+`NXP Cryptographic Acceleration Technology <https://www.nxp.com/applications/solutions/internet-of-things/secure-things/network-security-technology/cryptographic-acceleration-technology:NETWORK_SECURITY_CRYPTOG>`_.
+
+Architecture
+------------
+
+SEC is the SOC's security engine, which serves as NXP's latest cryptographic
+acceleration and offloading hardware. It combines functions previously
+implemented in separate modules to create a modular and scalable acceleration
+and assurance engine. It also implements block encryption algorithms, stream
+cipher algorithms, hashing algorithms, public key algorithms, run-time
+integrity checking, and a hardware random number generator. SEC performs
+higher-level cryptographic operations than previous NXP cryptographic
+accelerators. This provides significant improvement to system level performance.
+
+SEC HW accelerator above 4.x+ version are also known as CAAM.
+
+caam_jr PMD is one of DPAA drivers which uses uio interface to interact with
+Linux kernel for configure and destroy the device instance (ring).
+
+
+Implementation
+--------------
+
+SEC provides platform assurance by working with SecMon, which is a companion
+logic block that tracks the security state of the SOC. SEC is programmed by
+means of descriptors (not to be confused with frame descriptors (FDs)) that
+indicate the operations to be performed and link to the message and
+associated data. SEC incorporates two DMA engines to fetch the descriptors,
+read the message data, and write the results of the operations. The DMA
+engine provides a scatter/gather capability so that SEC can read and write
+data scattered in memory. SEC may be configured by means of software for
+dynamic changes in byte ordering. The default configuration for this version
+of SEC is little-endian mode.
+
+Note that one physical Job Ring represent one caam_jr device.
+
+Features
+--------
+
+The CAAM_JR PMD has support for:
+
+Cipher algorithms:
+
+* ``RTE_CRYPTO_CIPHER_3DES_CBC``
+* ``RTE_CRYPTO_CIPHER_AES128_CBC``
+* ``RTE_CRYPTO_CIPHER_AES192_CBC``
+* ``RTE_CRYPTO_CIPHER_AES256_CBC``
+* ``RTE_CRYPTO_CIPHER_AES128_CTR``
+* ``RTE_CRYPTO_CIPHER_AES192_CTR``
+* ``RTE_CRYPTO_CIPHER_AES256_CTR``
+
+Hash algorithms:
+
+* ``RTE_CRYPTO_AUTH_SHA1_HMAC``
+* ``RTE_CRYPTO_AUTH_SHA224_HMAC``
+* ``RTE_CRYPTO_AUTH_SHA256_HMAC``
+* ``RTE_CRYPTO_AUTH_SHA384_HMAC``
+* ``RTE_CRYPTO_AUTH_SHA512_HMAC``
+* ``RTE_CRYPTO_AUTH_MD5_HMAC``
+
+AEAD algorithms:
+
+* ``RTE_CRYPTO_AEAD_AES_GCM``
+
+Supported DPAA SoCs
+--------------------
+
+* LS1046A/LS1026A
+* LS1043A/LS1023A
+* LS1028A
+* LS1012A
+
+Limitations
+-----------
+
+* Hash followed by Cipher mode is not supported
+* Only supports the session-oriented API implementation (session-less APIs are not supported).
+
+Prerequisites
+-------------
+
+caam_jr driver has following dependencies are not part of DPDK and must be installed separately:
+
+* **NXP Linux SDK**
+
+ NXP Linux software development kit (SDK) includes support for the family
+ of QorIQ® ARM-Architecture-based system on chip (SoC) processors
+ and corresponding boards.
+
+ It includes the Linux board support packages (BSPs) for NXP SoCs,
+ a fully operational tool chain, kernel and board specific modules.
+
+ SDK and related information can be obtained from: `NXP QorIQ SDK <http://www.nxp.com/products/software-and-tools/run-time-software/linux-sdk/linux-sdk-for-qoriq-processors:SDKLINUX>`_.
+
+Currently supported by DPDK:
+
+* NXP SDK **18.09+**.
+* Supported architectures: **arm64 LE**.
+
+* Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
+
+Pre-Installation Configuration
+------------------------------
+
+Config File Options
+~~~~~~~~~~~~~~~~~~~
+
+The following options can be modified in the ``config`` file
+to enable caam_jr PMD.
+
+Please note that enabling debugging options may affect system performance.
+
+* ``CONFIG_RTE_LIBRTE_PMD_CAAM_JR`` (default ``n``)
+ By default it is only enabled in common_linuxapp config.
+ Toggle compilation of the ``librte_pmd_caam_jr`` driver.
+
+* ``CONFIG_RTE_LIBRTE_PMD_CAAM_JR_BE`` (default ``n``)
+ By default it is disabled.
+ It can be used when the underlying hardware supports the CAAM in BE mode.
+ e.g. LS1043A, LS1046A supports CAAM in BE mode.
+ BE mode is enabled by default in defconfig-arm64-dpaa-linuxapp-gcc.
+
+Installations
+-------------
+To compile the caam_jr PMD for Linux arm64 gcc target, run the
+following ``make`` command:
+
+.. code-block:: console
+
+ cd <DPDK-source-directory>
+ make config T=arm64-armv8a-linuxapp-gcc install
+
+Enabling logs
+-------------
+
+For enabling logs, use the following EAL parameter:
+
+.. code-block:: console
+
+ ./your_crypto_application <EAL args> --log-level=pmd.crypto.caam,<level>
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