We are seeing the issue after the Remote processor(M4) reset. It is not able to re-establish the RPMSG link again between M4 and A35.
After the partition reset the kernel is trying to prob imx_rpmsg: imx_rpmsg_reset API and user-level imx_rpmsg_tty driver modules are not able to create the endpoint locations.
imx_rpmsg.c:341:static void imx_rpmsg_reset(struct virtio_device *vdev)
