FM / power

/sys/devices/platform/serial8250/tty/ttyS25/power

Name	Size	Mode	Actions
async	4096	0644	edit dl rm
autosuspend_delay_ms	4096	0644	edit dl rm
control	4096	0644	edit dl rm
runtime_active_kids	4096	0444	edit dl rm
runtime_active_time	4096	0444	edit dl rm
runtime_enabled	4096	0444	edit dl rm
runtime_status	4096	0444	edit dl rm
runtime_suspended_time	4096	0444	edit dl rm
runtime_usage	4096	0444	edit dl rm
wakeup	4096	0644	edit dl rm
wakeup_abort_count	4096	0444	edit dl rm
wakeup_active	4096	0444	edit dl rm
wakeup_active_count	4096	0444	edit dl rm
wakeup_count	4096	0444	edit dl rm
wakeup_expire_count	4096	0444	edit dl rm
wakeup_last_time_ms	4096	0444	edit dl rm
wakeup_max_time_ms	4096	0444	edit dl rm
wakeup_total_time_ms	4096	0444	edit dl rm

Edit: /sys/devices/platform/serial8250/tty/ttyS25/power/runtime_enabled (4096B)

cmd: