i.MX91 EVK
Overview
The i.MX 91 Evaluation Kit (MCIMX91-EVK board) is a platform designed to display the most commonly used features of the i.MX 91 applications processor. The MCIMX91-EVK board is an entry-level development board with a small and low-cost package. The board can be used by developers to get familiar with the processor before investing a large amount of resources in more specific designs.
The i.MX 91 applications processor features an Arm Cortex-A55 core that can operate at speeds of up to 1.4 GHz.
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:
ENET: 10/100/1000 Mbit/s RGMII Ethernet connected with external PHY RTL8211
ENET_QoS: 10/100/1000 Mbit/s RGMII Ethernet supporting TSN connected with external PHY RTL8211
PCIe:
One M.2/NGFF Key E mini card 75-pin connector
Connectors:
40-Pin Dual Row Header
LEDs:
1x Power status LED
2x UART LED
Debug:
JTAG 20-pin connector
MicroUSB for UART debug
Supported Features
The imx91_evk board supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
GIC-v3 |
on-chip |
interrupt controller |
ARM TIMER |
on-chip |
system clock |
CLOCK |
on-chip |
clock_control |
PINMUX |
on-chip |
pinmux |
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 1.4 GHz.
Serial Port
This board configuration uses a single serial communication channel with the CPU’s UART1 for A55 core.
Programming and Debugging
U-Boot “go” command is used to load and kick Zephyr to Cortex-A55 Core.
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 Core:
fatload mmc 1:1 0x80000000 zephyr.bin; dcache flush; icache flush; go 0x80000000
Use this configuration to run basic Zephyr applications and kernel tests, for example, with the Basic Synchronization sample:
# From the root of the zephyr repository
west build -b imx91_evk/mimx9131 samples/synchronization
This will build an image with the synchronization sample app, boot it and display the following console output:
*** Booting Zephyr OS build v4.0.0-3277-g69f43115c9a8 ***
thread_a: Hello World from cpu 0 on imx91_evk!
thread_b: Hello World from cpu 0 on imx91_evk!
thread_a: Hello World from cpu 0 on imx91_evk!
thread_b: Hello World from cpu 0 on imx91_evk!
References
More information can refer to NXP official website: NXP website.