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How to set up UART2 in J990

686 bytes added, 13:35, 26 January 2012
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= Third way (under construction) =
Third way: configure kernel source. <span lang="en" classid="short_textresult_box" idclass="result_boxshort_text"><span class="hps">Configuration will be</span> <span class="hps">permanent. </span></span>This tutorial is focused for igep0020 only, tested in revision C.
=== Configure IGEP ===
 
'''Disable TWL4030 PCM voice interface:'''
Default kernel&nbsp; has disabled TWL4030 PCM voice interface output pins to high impedance, otherwise this module forces the level of mcbsp3_fsx and mcbsp3_clkx pins. To make sure, go to [http://git.igep.es/?p=pub/scm/linux-omap-2.6.git;a=blob_plain;f=sound/soc/codecs/twl4030.c;hb=linux-2.6.35.y $(kernel path)/sound/soc/codecs/twl4030.c] file already read: <br>
<pre> 0x04, /* REG_VOICE_IF (0xF) */
</pre>
'''Disable bluethoot:'''
 
Go to[http://git.igep.es/?p=pub/scm/linux-omap-2.6.git;a=blob_plain;f=arch/arm/mach-omap2/board-igep0020.c;hb=refs/heads/linux-2.6.35.y $(kernel path)/arch/arm/mach-omap2/board-igep0020.c]
 
igep00x0_wifi_bt_init fucntion initializes WIFI and Bluetooth peripherals. Opt variable Reset (opt=1) or not (opt=0) Bluetooth. For example you can disable Bluethoot editing these lines:
 
<pre> else if (hwrev == IGEP2_BOARD_HWREV_C)
igep00x0_wifi_bt_init(IGEP2_RC_GPIO_WIFI_NPD,
IGEP2_RC_GPIO_WIFI_NRESET, IGEP2_RC_GPIO_BT_NRESET,
!1); </pre>
 
'''Disable Bluetooth UART2 wires:'''
 
 
'''Enable UART2 in J990:'''
 
 
 
 
 
'''Please contribute'''
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