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How to set up UART2 in J990

498 bytes added, 17:41, 25 January 2012

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Fast Mode, set up UART2 until system reboot or halt. Using space to configure mux and disabling bluethoot. Default kernel binaries and source have 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 ~/sound/soc/codecs/twl4030.c file already read:

<pre> 0x04, /* REG_VOICE_IF (0xF) */</pre> Make sure that IGEPv2 Expansion is disabled, go to igep.ini file: <pre>;buddy=igep0022 </pre> Log with root user via SSH or Serial cable.<br>

Make sure that IGEPv2 Expansion is disabled, go Go to igep/sys/kernel/debug/omap_mux/.ini file '''Disable Bluethoot:''' Set sdmmc2_dat5 to GPIO mode:<pre>echo 0x004 &gt;buddysdmmc2_dat5 </pre> Check that: <pre>root@localhost:/sys/kernel/debug/omap_mux# cat sdmmc2_dat5name: sdmmc2_dat5.gpio_137 (0x48002166/0x136 =igep0022 0x0004), b ah3, t NAmode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE4signals: sdmmc2_dat5 | sdmmc2_dir_dat1 | cam_global_reset | sdmmc3_dat1 | gpio_137 | hsusb3_tll_stp | mm3_rxdp | safe_mode</pre>p

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