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Ups, and it works on 3.14 Kernel. 

We can assign "events the LED" or just control the LED to be on or off. Please note that we can also control GPIO devices connected to I2C Bus as well (if they are I2C GPIO Class devices, or emulated I2C Device in CPLD connected to FPGA).

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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