On 6/24/2016 12:22 PM, William Hermans wrote:
> Charles,
> 
> So one thing I do find kind of confusing. Is which universal-io device tree 
> to 
> load at boot. Basicaly, my board is currently set stock + hdmi audio, and 
> video 
> disabled.
> 
> Could you please give me a rundown on what each dtb is for ? I'll document 
> that 
> information and write up a blog post on it for future reference.

See the readme:

https://github.com/cdsteinkuehler/beaglebone-universal-io

* cape-universal  Exports all pins not used by HDMIN and eMMC
(including audio)

* cape-universaln Exports all pins not used by HDMI and eMMC (no audio
pins are exported)

* cape-univ-emmc  Exports pins used by eMMC, load if eMMC is disabled

* cape-univ-hdmi  Exports pins used by HDMI video, load if HDMI is
disabled

* cape-univ-audio Exports pins used by HDMI audio

> Additionally, while I'm here posting questions. What would be the best way to 
> have pins enabled in a specific way at boot ? Just modify the dtbs file to 
> reflect my preferences, and recompile ?

That's probably the best option if you need things setup early on,
otherwise you can just run a config-pin script sometime in the boot
sequence.

-- 
Charles Steinkuehler
[email protected]

-- 
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