RTOS/66AK2G02: Linux/66AK2G02: Can not synchronize between A15 and DSP with IPC

Part Number:66AK2G02

Tool/software:TI-RTOS

HI,

I am using 66AK2G02 ti-processor-sdk-rtos-k2g-evm-04.01.00.06 and the same version SDK-Linux.

I build the 66AK2G_linux_elf/ex02_messageq examples,and copy it to the filesystem.

root@k2g-evm:~# uname -r
4.9.41-ge3a80a1c5c
root@k2g-evm:~#
root@k2g-evm:~#
root@k2g-evm:~# ls
app_host           server_core0.xe66
root@k2g-evm:~# mpmcl reset dsp0
reset succeeded
root@k2g-evm:~# mpmcl load dsp0 server_core0.xe66
load succeeded
root@k2g-evm:~# mpmcl run dsp0 server_core0.xe66
[   97.098845] remoteproc remoteproc0: powering up 10800000.dsp
[   97.109650] remoteproc remoteproc0: Booting unspecified pre-loaded fw image
[   97.127740] virtio_rpmsg_bus virtio0: rpmsg host is online
[   97.144046] connector-hdmi connector: failed to find video source
[   97.150748] remoteproc remoteproc0: registered virtio0 (type 7)
[   97.173064] remoteproc remoteproc0: remote processor 10800000.dsp is now up
run succeeded
root@k2g-evm:~#
root@k2g-evm:~# ls
app_host           server_core0.xe66
root@k2g-evm:~# ./app_host CORE0
--> main:
--> Main_main:
--> App_create:
file:App.c, function: App_create,line:82
file:App.c, function: App_create,line:90
msgqName: CORE0:MsgQ:01
file:App.c, function: App_create,line:99
msgqName: CORE0:MsgQ:01
file:App.c, function: App_create,line:99
msgqName: CORE0:MsgQ:01
file:App.c, function: App_create,line:99
msgqName: CORE0:MsgQ:01
file:App.c, function: App_create,line:99
^CIpc: Caught SIGINT, calling Ipc_stop...

I use mpmcl command to reset\load\run the dsp0.

but the dsp0 do not work to create a messageQ,the app_host will stop at MessageQ_open.

The weird thing is I can not cat anything at  /sys/kernel/debug/remoteproc/remoteproc0/trace0.

There is my question:

1.Why the  /sys/kernel/debug/remoteproc/remoteproc0/trace0 is empty?the dsp core was waked up but not run?

2.How can I fix it and let the ex02_messageq example run?

Any help will be appreciated.

Thanks.