Hello,
How interesting to upstream Linux would it be to have a way for Linux
kernel or user space to pass a device tree blob to remote processor when
starting a remote proc FW?
For instance we could imagine something like this:
1/ user space does echo -n firmware.elf >
/sys/class/remoteproc/remoteprocXXX/firmware
2/ user space does echo -n my_dt.dtb >
/sys/class/remoteproc/remoteprocXXX/dtb
3/ user space does echo start > /sys/class/remoteproc/remoteprocXXX/state
We could also imagine that the kernel could load its own device tree
into memory and puts the address to this memory zone in a resource of
the resource table if some resource type is found.
But I think the user space based approach is more flexible as you could
potentially specify a different DTB from the kernel itself.
What do you think?
Regards,
--
Yann
