Index: kernel/arch/arm32/src/mach/beagleboardxm/beagleboardxm.c
===================================================================
--- kernel/arch/arm32/src/mach/beagleboardxm/beagleboardxm.c	(revision b1c43bd94fa65c0a81ae171a8d0bbcb9935543ea)
+++ kernel/arch/arm32/src/mach/beagleboardxm/beagleboardxm.c	(revision 1cdb412ac28e101da1795823f3d01ca7c3e0df21)
@@ -185,4 +185,5 @@
 		amdm37x_uart_input_wire(&beagleboard.uart, srln);
 	}
+	amdm37x_irc_enable(beagleboard.irc_addr, AMDM37x_UART3_IRQ);
 }