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To enable remoteproc functionality for the M4 core on the TI AM62x platform, you need to make specific additions to the Device Tree Source (DTS) file. Here are the steps you should follow:
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Define the Remote Processor Node: Add a node in the DTS file for the M4 core as a remote processor. This should include:
- A compatible string for the M4 core.
- Memory regions that the M4 core will use.
- Interrupt lines associated with the M4 core.
- A link between the remoteproc driver and the M4 core.
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Memory Regions and Interrupts: Ensure that the memory regions and interrupts are correctly defined. This involves specifying the memory addresses and configurations necessary for the M4 core to communicate with the main processor.
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Firmware Loading: Specify the firmware image that the M4 core will execute. This is crucial for the remoteproc framework to load and manage the firmware properly.
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Refer to TI Documentation: Consult the TI AM62x documentation for the correct DTS structure and parameters needed for the M4 core to ensure all necessary configurations are included.
Regarding the use of ti_k3_m4_remoteproc.c from the mainline Linux kernel, you need to verify its compatibility with the TI AM62x platform. If the mainline kernel lacks the required features for the M4 core, you may need to refer to the downstream tree from Toradex for additional patches or configurations not present in the mainline kernel.
There may be additional features or patches required in the mainline kernel to fully support remoteproc for the M4 core on the TI AM62x platform. It is advisable to check the latest updates from Toradex or the community for any specific patches or configurations necessary for the M4 core to operate correctly.
Please, also check if these links can help you solve your problem: