OK,

 Thanks Robert.
And thanks for your hard work contributing to the community.

I will have a detailed study later as my first look here 
https://github.com/cdsteinkuehler/beaglebone-universal-io 
(your last link) got me worried. It says:
"
Usage

Load the overlay as usual

echo cape-universaln > /sys/devices/bone_capemgr.*/slots"

... but there is no specified above directory.

Anyhow, don't worry. I will leave it till later.

Cheers,

Jan

On Thursday, December 11, 2014 12:53:42 AM UTC+11, RobertCNelson wrote:
>
> On Wed, Dec 10, 2014 at 1:28 AM,  <[email protected] <javascript:>> 
> wrote: 
> > Hi Robert, 
> > 
> >  There is a lot of confusion about how to make external hardware / 
> custom 
> > capes to work with the latest kernel. 
> > For people, who do not want to downgrade or will need to update the 
> kernel 
> > sooner or later (like myself) 
> > can you kindly point to a tutorial/reading/explanation how to do it? 
> > That will save a lot of frequent questions and doubts about the issue. 
> > Trying to search for related documentation didn't bring me anything. 
>
> Take a look at: 
>
> http://elinux.org/Beagleboard:Capes_3.8_to_3.14#Custom_dtb 
>
> There is a dozen examples in that repo: 
>
> spi/usart/adc: 
>
> https://github.com/RobertCNelson/dtb-rebuilder/blob/3.14-ti/src/arm/am335x-bone-basic-proto-cape.dtsi
>  
>
> gpio/rtc/i2c: 
>
> https://github.com/RobertCNelson/dtb-rebuilder/blob/3.14-ti/src/arm/am335x-bone-rtc-01-00a1.dtsi
>  
>
>
> The default: "am335x-boneblack.dtb" also supports most pins with 
> Charle's config-pin: 
>
> https://github.com/cdsteinkuehler/beaglebone-universal-io 
>
> (you can ignore the initial overlay note, as it's loaded by default.) 
>
> I'm not really planning to document v3.14.x further, as something 
> special is planned to be merged for v3.19-rc1. (if your following the 
> device-tree mainline list) 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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