i.MX8MM: M4 wake up A53 through RPMsg on kernel 5.4.24

[siva_prabhakara]

hello, 

i am trying to do the M4 wakeup A53 part.

I understand that there is a patch needed to acheive this as per https://community.nxp.com/docs/DOC-343113  But i am on 5.4.24 kernel on my imx8mm, so looks like there are many changes and i dont see any irq/isr code there under imx_rpmsg.c. Any help is appreciated to figure out how this can be enabled on 5.4 kernel.

[igorpadykov]

Hi Siva

I am afraid such patch is not available for i.MX8M Mini, also it has very different design

compared with i.MX8QXP processor. As starting point one can look at AN12195

Implement Low-Power Audio on i.MX8M

AN12195SW.zip

Best regards
igor
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