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=== Configure Mux ===
Go to:/sys/kernel/debug/omap_mux, and change the this mux configuration:
<pre>echo 0x104>sdmmc2_dat4
echo 0x104>sdmmc2_dat5
</pre>
Use cat command to check it:<br>
<pre>cat sdmmc2_dat4
cat sdmmc2_dat5
</pre>
<pre>root@localhost:/sys/kernel/debug/omap_mux# cat sdmmc2_dat4
name: sdmmc2_dat4.gpio_136 (0x48002164/0x134 = 0x0104), b ae4, t NA
signals: sdmmc2_dat5 | sdmmc2_dir_dat1 | cam_global_reset | sdmmc3_dat1 | gpio_137 | hsusb3_tll_stp | mm3_rxdp | safe_mode
</pre>
Note: OMAP_PIN_INPUT=Input and Output pin and OMAP_PIN_OUTPUT=Output pin.
=== Read/Write test ===
