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If you don't have it, you should export gpio137: <br>
<pre>echo 137 > /sys/class/gpio/export </pre>
Set gpio137 to low value to reset disable bluethoot:
<pre>echo 0 > /sys/class/gpio/gpio137/value</pre>
Check that:
signals: mcbsp3_dr | uart2_rts | NA | NA | gpio_141 | hsusb3_tll_data5 | NA | safe_mode
root@localhost:/sys/kernel/debug/omap_mux#
</pre>
=== Test UART2 in J990<br> ===