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Linux kernel intel_mid question

Ster1
Novice
969 Views

When I read the kernel changes by intel for Edison including intel_mid module, I see a lot of references to rpmsg.

Sounds like chip-to-chip communication mechanism. Question is, can I do that from user space or from command line? That would make it easy for me to test different things.

Thanks for your help.

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Carlos_M_Intel
Employee
107 Views

Hi stixter,

Which image are you using?

What changes do you want to do?

Have you tried in /sys/bus/rpmsg/drivers/intel_mid_rpmsg?

If you are not able to do changes in /sys for the rpmsg you will need to do the changes while building the image, this is because the rpmsg framework is related with kernel drivers. Another way is to install/create an API for rpmsg messages:

https://www.kernel.org/doc/Documentation/remoteproc.txt https://www.kernel.org/doc/Documentation/remoteproc.txt

https://www.kernel.org/doc/Documentation/rpmsg.txt https://www.kernel.org/doc/Documentation/rpmsg.txt

I hope this helps,

Charlie

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Carlos_M_Intel
Employee
108 Views

Hi stixter,

Which image are you using?

What changes do you want to do?

Have you tried in /sys/bus/rpmsg/drivers/intel_mid_rpmsg?

If you are not able to do changes in /sys for the rpmsg you will need to do the changes while building the image, this is because the rpmsg framework is related with kernel drivers. Another way is to install/create an API for rpmsg messages:

https://www.kernel.org/doc/Documentation/remoteproc.txt https://www.kernel.org/doc/Documentation/remoteproc.txt

https://www.kernel.org/doc/Documentation/rpmsg.txt https://www.kernel.org/doc/Documentation/rpmsg.txt

I hope this helps,

Charlie

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