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+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode
+Date: March 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Make it possible to switch the PicoLCD device between LCD
+ (firmware) and bootloader (flasher) operation modes.
+
+ Reading: returns list of available modes, the active mode being
+ enclosed in brackets ('[' and ']')
+
+ Writing: causes operation mode switch. Permitted values are
+ the non-active mode names listed when read.
+
+ Note: when switching mode the current PicoLCD HID device gets
+ disconnected and reconnects after above delay (see attribute
+ operation_mode_delay for its value).
+
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode_delay
+Date: April 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Delay PicoLCD waits before restarting in new mode when
+ operation_mode has changed.
+
+ Reading/Writing: It is expressed in ms and permitted range is
+ 0..30000ms.
+
+
+What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate
+Date: March 2010
+Contact: Bruno Prémont <bonbons@linux-vserver.org>
+Description: Make it possible to adjust defio refresh rate.
+
+ Reading: returns list of available refresh rates (expressed in Hz),
+ the active refresh rate being enclosed in brackets ('[' and ']')
+
+ Writing: accepts new refresh rate expressed in integer Hz
+ within permitted rates.
+
+ Note: As device can barely do 2 complete refreshes a second
+ it only makes sense to adjust this value if only one or two
+ tiles get changed and it's not appropriate to expect the application
+ to flush it's tiny changes explicitely at higher than default rate.
+