iMX7 : share NAND between M4 and A7 core

[victorien_vedri]

Hi,

For a project, I would like a specific operating with iMX7 :

- Run FREERTOS on Cortex M4

- Run Linux/Yocto on Cortex A7

- Continual, Cortex M4 save data on NAND flash

- The main part of the time, Cortex A7 is sleeping and few time it wake up to process data (from NAND flash)

- NAND flash is share between Cortex M4 et Cortex A7.

Is it possible to have this configuration ?

Is there some example ?

Best regards

[igorpadykov]

Hi victorien

yes such configuration is possible, NAND can be shared using DRC described in

sect.3.2 Resource Domain Controller (RDC) i.MX7D Reference Manual

http://cache.nxp.com/files/32bit/doc/ref_manual/IMX7DRM.pdf

Unfortunately I am not aware of examples of this case.

Best regards
igor
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[victorien_vedri]

Thinks for this answer.

Is there an application note which explain how to use the heterogeneous architecture (cortex M4 and A7) configure the cross compilation software and the SDK ?

[igorpadykov]

one can look at linux documentation:

https://www.nxp.com/webapp/Download?colCode=L4.9.88_2.0.0_LINUX_DOCS&Parent_nodeId=13376994810717061...