AM5728: Timer6 cannot be created successfully.

I changed the Dsp1，Dsp2 DTS as below, but in linux, it still goes to crash as Timer_create(5,...), my DSP1 application.

As I call Timer_getStatus(5), it shows 1, that means available, right?

Would you show me what need to do to have a second timer in DSP1?

&dsp1 {
status = "okay";
memory-region = <&dsp1_cma_pool>;
mboxes = <&mailbox5 &mbox_dsp1_ipc3x>;
timers = <&timer5>, <&timer6>;
watchdog-timers = <&timer10>;
};

&dsp2 {
status = "disable";
memory-region = <&dsp2_cma_pool>;
mboxes = <&mailbox6 &mbox_dsp2_ipc3x>;
//timers = <&timer6>;
timers = <>;
watchdog-timers = <&timer13>;
};