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{{Message/Information Message|title=TITLE|message=This How-To was tested under Kernel 2.6.35.y but content are valid for Kernel 2.6.37.y}}
= Overview =
This How-To is meant to be a starting point for people to learn to set up UART2 for IGEPv2 J990 connector as quickly and easily as possible. In this how-to, we use [http://releases.linaro.org/platform/linaro-m/headless/final/linaro-m-headless-tar-20101108-2.tar.gz Linaro Headless] with [[Linux Kernel 2.6.35.y|Kernel 2.6.35.y]]. This How-To is focused for revisions RC1/RC3/RC4/RC6 (WIFI/BT versions). <br>
More information about UART: [http://en.wikipedia.org/wiki/UART UARTUniversal_asynchronous_receiver/transmitter <span style="text-decoration: underline;">here</span>] and [[How to use UARTs|here]].'''<br>'''
There are two three modes to configure UART2 in J990 : via user space (fast modefirst way), editing only igep.ini (second way) or editing kernel source and compile it (slow modethird way). '''NOTE: '''UART2 in j990 connector has CMOS voltages (0V-1V8).
= Feedback and Contributing =
At any point, if you see a mistake you can contribute to this How-To.<br> = First way<br> = First way: this mode has an issue, when your system reboot or shutdown you will need to configure again. Using user space to configure mux and disable bluetooth.<br>
=== Configure IGEP ===