Hi,
I am using the tool m4ctrl to load m4 bin from linux.But I have some issues.
I git clone from m4ctrl - M4 Control Tool for i.MX platforms ,and I build it.
Then I get an exec bin m4ctrl and an kernel module m4ctrl_dev.ko.
I use insmod m4ctrl_dev.ko in the linux shell to insmod kernel module,but an error occuring:
root@imx8mmevk:~# [ 950.531748] Cannot obtain MU ID
I found it is printed from m4ctrl_dev.c:
sciErr = sc_ipc_getMuID(&mu_id);
if (sciErr != SC_ERR_NONE) {
pr_err("Cannot obtain MU ID\n");
return -EPROBE_DEFER;
}
The function sc_ipc_getMuID is defined in the file: drivers/soc/imx/sc/main/ipc.c.
This error occurs because the MU driver does not load in the kernel.
When Linux booting, a log can find in the shell:
[ 0.114381] Cannot find MU entry in device tree
My question is: How to add MU driver on the imx8m mini board?
By the way, My yocto version is 2.5 (Sumo) and linux version is imx_4.14.78_1.0.0_ga.
