Zephyr on iMX8MN A53 core

[mikk-leini-krakul]

@JiafeiPan - From #49061 and #49157 I see that there is some NXP_HAL update coming. Could you please elaborate what exactly will be updated? Is there a public release plan?

I am interested in running Zephyr on iMX8MN single A53 core, not on M7. The Zephyr RTOS works (on top of u-Boot), but not peripherals. There is quite a lot of digging to understand what exists, what doesn't. As I see iMX8 does not have "IMX" drivers in HAL_NXP, the closest what it has are MCUX drivers for M7 core. It is encouraging to see that ARM has added Cortex-A core functions to CMSIS (link) and Core_A is already integrated into Zephyr HAL_NXP, though it requires some work to make it build. What is most needed from NXP is to add Cortex-A support into MCUX so it would be possible to build it for M or A core(s). And then an integration of MCUX into Zephyr drivers is needed, from NXP or community.

This is how I understand the situation. Is it something what will be done?