FM / pcspkr

/sys/devices/platform/pcspkr

Name	Size	Mode	Actions
power/	-	0755	rm
subsystem/	-	0755	rm
driver_override	4096	0644	edit dl rm
modalias	4096	0444	edit dl rm
uevent	4096	0644	edit dl rm

Edit: /sys/devices/platform/pcspkr/modalias (4096B)

platform:pcspkr