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copied!<p>I found many of the examples provided at hipstercircuits to be a bit overwhelming; especially if you're just looking to adjust the pins to mode 7. If anyone reading this is having the same issue, the following link may help: <a href="http://bbbadventures.blogspot.ca/2013/06/pinmuxing.html" rel="noreferrer">http://bbbadventures.blogspot.ca/2013/06/pinmuxing.html</a> It provides the most basic template.</p> <p>Should the link above break, here's the snippet provided (with a few tweaks for clarity):</p> <pre><code>/* * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ /dts-v1/; /plugin/; / { compatible = "ti,beaglebone", "ti,beaglebone-black"; /* identification */ part-number = "pinctrl-test-0"; fragment@0 { target = <&am33xx_pinmux>; __overlay__ { pinctrl_test: pinctrl_test_0_pins { pinctrl-single,pins = < 0x030 0x07 /* P8_12 OUTPUT | MODE7 */ 0x034 0x07 /* P8_11 OUTPUT | MODE7 */ /* Add more pins here */ >; }; }; }; fragment@1 { target = <&ocp>; __overlay__ { test_helper: helper { compatible = "bone-pinmux-helper"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_test>; status = "okay"; }; }; }; }; </code></pre> <p>When adding more pins to the above snippet, you can use the following tables to identify which hex values match the pins:</p> <ul> <li><a href="https://github.com/derekmolloy/boneDeviceTree/blob/master/docs/BeagleboneBlackP8HeaderTable.pdf?raw=true" rel="noreferrer">https://github.com/derekmolloy/boneDeviceTree/blob/master/docs/BeagleboneBlackP8HeaderTable.pdf?raw=true</a></li> <li><a href="https://github.com/derekmolloy/boneDeviceTree/blob/master/docs/BeagleboneBlackP9HeaderTable.pdf?raw=true" rel="noreferrer">https://github.com/derekmolloy/boneDeviceTree/blob/master/docs/BeagleboneBlackP9HeaderTable.pdf?raw=true</a></li> </ul> <p>Each pin is set by appending an additional entry into pinctrl-single,pins. The format looks like this:</p> <p>[offset] [mode]</p> <p>Example: 0x030 0x07</p> <p>In the two tables linked above refer to the third column, entitled "ADDR/OFFSET", for the offset value.</p> <p>I hope this helps :)</p> <p>Edit: I should also mention that the answers provided by Martin and Don are both excellent should help cover the rest of the important details.</p>

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