How to assign ECSPI2 to A53 or M7 from Linux?

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How to assign ECSPI2 to A53 or M7 from Linux?

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jpsk
Contributor II

Hi,

We have an i.MX8 module that I would like to be able to assign ECSPI2 to either A53 core or M7 core depending on the system configuration. This resource assignment can only be done after the system is bootup in embedded Linux on A53.  

If ECSPI2 is not disabled in the device tree file, can I still configure the RDC settings from either A53 or M7 firmware so the M7 core has exclusive access to the SPI?  If so, where can I find more information about this?

Please let me if I can provide further details on my question.  Any pointer is greatly appreciated!  

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