* This application note applies to fitlet2 supports I2C GPIO extender if configured with the [http://fit-pc.com/wiki/index.php/Fitlet2_FACET_Cards#FC-SCG FC-SCG FACET]FACET-Card running Linux.* It provides an example of how to use the supported I2C GPIO extender feature of FC-SCG under Linux.
==I2c gpio I2C GPIO extender binding and usage==
1. Make sure that the kernel you use supports the necessary driver.