Hi,
You can get the DLA status with the following command (active/suspended).
Does this meet your requirement?
$ watch -n 1 "cat /sys/devices/platform/host1x/15880000.nvdla0/power/runtime_status"
$ watch -n 1 "cat /sys/devices/platform/host1x/158c0000.nvdla1/power/runtime_status"
Thanks.