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and nothing, LED class is not there. Not compiled in. Bad luck. 

Lets switch gears, I plug TE0720 onto TE0703 simple basis and start it with pre-historic 3.09 Kernel.

cd /sys/class
cd leds
ls 

And failed again, there are no LEDs available. They are missing in device-tree.

 

Zedboard OOB Design.

The SD Card images delivered with zedboard (and available as OOB SD Card images) include a kernel 3.09 with GPIO-LEDS enabled on MIO7 with default trigger set to MMC (SD Card) activity. Writing none to LED trigger would allow direct programmatic control over MIO7 LED on zedboard (labelled LD9!). 

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