-cpu_clk <CPU freq [MHz]>
-touchpanel {tsc2007|edt-ft5x06}
-otg_mode [host|device|none]
-video_mode <video mode as understood by Linux fb_find_mode() function>
- e.g.: 640x480MR-24@60
+cpu_clk <CPU freq [MHz]> CPU clock frequency set after boot.
+
+touchpanel {tsc2007|edt-ft5x06|am3359-tscadc} type of touchpanel.
+ No touchpanel will be enabled when unset.
+
+otg_mode [host|device|none] operation mode of the USBOTG port
+
+video_mode <one of the display names from the Glyn Family Concept or
+ a video mode as understood by Linux fb_find_mode() function
+ (e.g.: 640x480MR-24@60)>
+ LCD interface will be disabled when unset.
+