BeagleBone Mux Settings – Lookup Table

Download links are below for full A3 printable tables showing the details of the BeagleBone multiplexer settings.
To configure the BeagleBone multiplexer under Angstrom from the command line use

echo 6 > /sys/kernel/debug/omap_mux/gpmc_a2

Where

6 = Multiplexer Mode

gpmc_a2 = the Mode0 name of the pin you are trying to configure

Results in setting of Port 9 Pin 14 soe ehrpwm1A_mux1

Download links for Mux Lookup tables

BeagleBone-Port8-Mux-A3-Rev1.pdf

BeagleBone-Port9-Mux-A3-Rev1.pdf

BeagleBone-Port8-Mux-A3-Rev1.xlsx

BeagleBone-Port9-Mux-A3-Rev1.xlsx

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One thought on “BeagleBone Mux Settings – Lookup Table

  1. You also have to set the pin-mode bits in the value. For example, for an input with no pull-up, OR the mode value with 0x28. See table 9-1 in the TRM.

    Also, the debugfs “files” accept the “0x” prefix, if desired.

    Like

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