In your overlay, you can add the following:
fragment@1 {
target = <&I2c2>;
__overlay__ {
status = “disabled”;
}
}
Regards,
John
> On Feb 28, 2016, at 2:25 PM, lucas <[email protected]> wrote:
>
> Thank you for the quick response :)
>
> > Using the "dtb-rebuilder" just add:
> >
> > #include "am335x-boneblack-prucape.dtsi"
>
> So I added this to the end of am335x-boneblack-overlay.dts and compiled, but
> now I keep getting the following error:
>
> [ 16.995007] davinci-mcasp 4803c000.mcasp: invalid tdm slots: 0
> [ 20.377029] pinctrl-single 44e10800.pinmux: pin 44e1097c.0 already
> requested by 4819c000.i2c; cannot claim for 4a300000.pruss
> [ 20.764537] pinctrl-single 44e10800.pinmux: pin-95 (4a300000.pruss) status
> -22
> [ 21.041264] pinctrl-single 44e10800.pinmux: could not request pin 95
> (44e1097c.0) from group pru_cape_bone_pins on device pinctrl-single
> [ 21.526351] pruss-rproc 4a300000.pruss: Error applying setting, reverse
> things back
>
> I assume that I have to somehow deactivate the i2c in some file. Could you
> give me some idea how to do that or where to look?
>
> On Sunday, February 28, 2016 at 4:43:12 PM UTC+1, RobertCNelson wrote:
> On Sun, Feb 28, 2016 at 9:24 AM, lucas <[email protected] <javascript:>>
> wrote:
> > I am trying to figure out the how to configure the device tree overlay for
> > the PRU-cape.
> >
> > I am using the latest recommended image from
> > http://beagleboard.org/latest-images <http://beagleboard.org/latest-images>
> > (i.e. Debian 8.3 Linux beaglebone
> > 4.1.15-ti-rt-r43) without any changes.
> >
> > I uncommented the following line in uEnv.txt because I read that the HDMI
> > interface has to be disabled
> > ##BeagleBone Black: HDMI (Audio/Video)/eMMC disabled:
> > dtb=am335x-boneblack-overlay.dtb
> >
> > This is what works:
> > 1.) I can build and load the PRU_LED0.out from TI's software support
> > package
> > onto PRU0 with remoteproc
> > 2.) Then I use the command "config-pin P9.30 pruout" and the led blinks
> >
> > But I this only works with this particular pin. I would actually like is to
> > enable all the pins for the PRU that are in defined
> > "am335x-boneblack-prucape.dtsi". I have tried a myriad things (I don't
> > really want to list all of them, but if it helps i will).
>
> for reference:
>
> https://git.ti.com/pru-software-support-package/pru-software-support-package/trees/dev/pru_cape
>
> <https://git.ti.com/pru-software-support-package/pru-software-support-package/trees/dev/pru_cape>
>
>
> (i didn't realize this existed)
>
> >
> > Can anyone give me a hint on how to enable the overlay?
>
> Oh that's not an overlay..
>
> Using the "dtb-rebuilder" just add:
>
> #include "am335x-boneblack-prucape.dtsi"
>
> >
> > There seem to be different ways to enable pins i.e. use "config-pin",
> > loading adding an overlay to "/sys/devices/platform/bone_capemgr/slots",
> > going to the "/opt/source/dtb-4.1-ti/" directory and changing and making
> > the
> > files there. What is the recommended way?
>
> You do it anyway you want that works..
>
> overlay is best for development,
> config-pin is nice if your doing lots of dynamic changes
> /opt/source/dtb-4.1-ti/ us nice if you just want to set and forget about it
> ;)
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/ <https://rcn-ee.com/>
>
> --
> For more options, visit http://beagleboard.org/discuss
> <http://beagleboard.org/discuss>
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