sysfs-bus-platform-devices-pef2256

What:		/sys/bus/platform/devices/*.pef2256/subordinate
KernelVersion:	6.4
Contact:	Herve Codina <herve.codina@bootlin.com>
Description:
		(RW) Controls whether the PEF2256 works as subordinate or main
		device mode.
		  - 0 : main device mode
		  - 1 : subordinate mode
		In subordinate device mode it synchronizes on line interface
		clock signals. Otherwise, it synchronizes on internal clocks.