boards: arm64: add mimx93 evk board document

Add document for Zephyr support in i.MX93 EVK board.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>

boards/arm64/mimx93_evk/doc/index.rst

@@ -0,0 +1,126 @@
+.. _imx93_evk:
+
+NXP i.MX93 EVK (Cortex-A55)
+############################
+
+Overview
+********
+
+The i.MX93 Evaluation Kit (MCIMX93-EVK board) is a platform designed to show
+the most commonly used features of the i.MX 93 Applications Processor in a
+small and low cost package. The MCIMX93-EVK board is an entry-level development
+board, which helps developers to get familiar with the processor before
+investing a large amount of resources in more specific designs.
+
+i.MX93 MPU is composed of one cluster of 2x Cortex-A55 cores and a single
+Cortex®-M33 core. Zephyr OS is ported to run on one of the Cortex®-A55 core.
+
+- Board features:
+
+  - RAM: 2GB LPDDR4
+  - Storage:
+
+    - SanDisk 16GB eMMC5.1
+    - microSD Socket
+  - Wireless:
+
+    - Murata Type-2EL (SDIO+UART+SPI) module. It is based on NXP IW612 SoC,
+      which supports dual-band (2.4 GHz /5 GHz) 1x1 Wi-Fi 6, Bluetooth 5.2,
+      and 802.15.4
+  - USB:
+
+    - Two USB 2.0 Type C connectors
+  - Ethernet
+  - PCI-E M.2
+  - Connectors:
+
+    - 40-Pin Dual Row Header
+  - LEDs:
+
+    - 1x Power status LED
+    - 2x UART LED
+  - Debug
+
+    - JTAG 20-pin connector
+    - MicroUSB for UART debug, two COM ports for A55 and M33
+
+
+Supported Features
+==================
+
+The Zephyr mimx93_evk board configuration supports the following hardware
+features:
+
++-----------+------------+-------------------------------------+
+| Interface | Controller | Driver/Component                    |
++===========+============+=====================================+
+| GIC-v4    | on-chip    | interrupt controller                |
++-----------+------------+-------------------------------------+
+| ARM TIMER | on-chip    | system clock                        |
++-----------+------------+-------------------------------------+
+| UART      | on-chip    | serial port                         |
++-----------+------------+-------------------------------------+
+
+Devices
+========
+System Clock
+------------
+
+This board configuration uses a system clock frequency of 24 MHz.
+Cortex-A55 Core runs up to 1.7 GHz.
+
+Serial Port
+-----------
+
+This board configuration uses a single serial communication channel with the
+CPU's UART4.
+
+Programming and Debugging
+*************************
+
+Copy the compiled ``zephyr.bin`` to the first FAT partition of the SD card and
+plug the SD card into the board. Power it up and stop the u-boot execution at
+prompt.
+
+Use U-Boot to load and kick zephyr.bin to Cortex-A55 Core1:
+
+.. code-block:: console
+
+    fatload mmc 1:1 0xc0000000 zephyr.bin; dcache flush; icache flush; dcache off; icache off; cpu release 1 0xc0000000
+
+
+Or use the following command to kick zephyr.bin to Cortex-A55 Core0:
+
+.. code-block:: console
+
+    fatload mmc 1:1 0xc0000000 zephyr.bin; dcache flush; icache flush; dcache off; icache off; go 0xc0000000
+
+
+Use this configuration to run basic Zephyr applications and kernel tests,
+for example, with the :ref:`synchronization_sample`:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/synchronization
+   :host-os: unix
+   :board: mimx93_evk_a55
+   :goals: run
+
+This will build an image with the synchronization sample app, boot it and
+display the following ram console output:
+
+.. code-block:: console
+
+    *** Booting Zephyr OS build zephyr-v3.2.0-8-g1613870534a0  ***
+    thread_a: Hello World from cpu 0 on mimx93_evk_a55!
+    thread_b: Hello World from cpu 0 on mimx93_evk_a55!
+    thread_a: Hello World from cpu 0 on mimx93_evk_a55!
+    thread_b: Hello World from cpu 0 on mimx93_evk_a55!
+
+References
+==========
+
+More information can refer to NXP official website:
+`NXP website`_.
+
+.. _NXP website:
+   https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i-mx-applications-processors/i-mx-9-processors/i-mx-93-applications-processor-family-arm-cortex-a55-ml-acceleration-power-efficient-mpu:i.MX93