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What:		/sys/bus/i2c/devices/.../device
Date:		February 2011
Contact:	Minkyu Kang <mk7.kang@samsung.com>
Description:
		show what device is attached

		=======  ======================
		NONE     no device
		USB      USB device is attached
		UART     UART is attached
		CHARGER  Charger is attaced
		JIG      JIG is attached
		=======  ======================

What:		/sys/bus/i2c/devices/.../switch
Date:		February 2011
Contact:	Minkyu Kang <mk7.kang@samsung.com>
Description:
		show or set the state of manual switch

		=======  ==============================
		VAUDIO   switch to VAUDIO path
		UART     switch to UART path
		AUDIO    switch to AUDIO path
		DHOST    switch to DHOST path
		AUTO     switch automatically by device
		=======  ==============================