topic Re: imx95 m7 core edma issue in i.MX Processors

imx95 m7 core edma issue

vraevsky — Tue, 28 Oct 2025 21:41:20 GMT

Dear NXP Support,

We have an issue with the imx95 M7 core.
We are using the NXP provided SDK_25_06_00_IMX95LPD5EVK-19.tar.gz.
Compiled all driver_examples/lpuart:
edma_transfer, interrupt, interrupt_rb_transfer, interrupt_transfer, polling.
Issued the same procedure for each one from the Linux console:

echo stop > /sys/class/remoteproc/remoteproc1/state
echo <sample-name>.elf > /sys/class/remoteproc/remoteproc1/firmware
echo start > /sys/class/remoteproc/remoteproc1/state

The M7 core serial console shows prompt, and it is possible to interact with the loaded driver.
Almost everything is okay, except for the lpuart_edma_transfer_cm7.elf that shows nothing on the M7 core serial console. Discovered that the driver configures the M7 serial console:
the M33 md command shows the correct values for the pinmux registers.

We’d appreciate it if you could shed light on the problem and help us in resolving the issue.

Thanks in advances,
Valentin.