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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
+ ======= ==============================