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[TDA4] IPC issue between in A72 (linux ) to main-r5f0 (sysbios)

Other Parts Discussed in Thread: SYSBIOS

Hi experts,

 log follow:

root@j7-evm:/lib/firmware# ./app_ipc_demo  -e 3 13
rproc_device_find_chrdev_by_remote_port: could not find a matching rpmsg_chrdev node
Error: could not find char device by remote port: 13
IPC: Deleting TX channel for CPU [r5f-main-0-core-0] for endpt 13
IPC: rpmsg_char CPU name is [r5f-main-0-core-0]
IPC: Found rproc_device for rproc CPU name [r5f-main-0-core-0]
rproc_device_find_chrdev_by_remote_port: could not find a matching rpmsg_chrdev node
IPC: ERROR: Unable to find rproc_char_device for rproc CPU [r5f-main-0-core-0] @ endpt 13

  I find it is not create rpmsg_chrdev dir :

root@j7-evm:/sys/devices/platform/interconnect@100000/interconnect@100000:r5fss@5c00000/5c00000.r5f/remoteproc/remoteproc4/virtio4# ls -al
total 0
drwxr-xr-x 3 root root     0 Oct 24 03:20 .
drwxr-xr-x 4 root root     0 Oct 24 03:20 ..
-r--r--r-- 1 root root 65536 Oct 24 03:26 device
lrwxrwxrwx 1 root root     0 Oct 24 03:26 driver -> ../../../../../../../../bus/virtio/drivers/virtio_rpmsg_bus
-r--r--r-- 1 root root 65536 Oct 24 03:26 features
-r--r--r-- 1 root root 65536 Oct 24 03:26 modalias
drwxr-xr-x 2 root root     0 Oct 24 03:26 power
-r--r--r-- 1 root root 65536 Oct 24 03:26 status
lrwxrwxrwx 1 root root     0 Oct 24 03:20 subsystem -> ../../../../../../../../bus/virtio
-rw-r--r-- 1 root root 65536 Oct 24 03:20 uevent
-r--r--r-- 1 root root 65536 Oct 24 03:26 vendor

  what should I do ?

 please , help me .

 Thank you

BR

 lei