Linux beaglebone 4.4.34-ti-r69 #1 SMP Wed Nov 23 20:01:14 UTC 2016 armv7l GNU/Linux PRU problems

[laurel.a.watts]

The PRUs do not seem to work right with the latest version of the Debian OS.  What needs to be done to fix this?

[Robert Nelson]

On Fri, Dec 2, 2016 at 4:34 PM, laurel.a.watts <laurel....@noaa.gov> wrote:
> The PRUs do not seem to work right with the latest version of the Debian OS.
> What needs to be done to fix this?

Which version do you need?

uio (compatible with 3.8.13-bone)

or

remoteproc (new with v4.4.x-ti)

Then of course what board are you booting with..

Regards,

--
Robert Nelson
https://rcn-ee.com/

[Robert Nelson]

On Fri, Dec 2, 2016 at 7:52 PM, Laurel A Watts <laurel....@noaa.gov> wrote:
> Hi Robert,
>
> I am trying to update from 5/2014 version on beaglebone Black to a more up to date version. I can get everything to work (uarts, i2c, gpio, analog in, and udp) except the PRUS. I get errors with memory allocation and interrupts.
> Laurel

Did you enable the am33xx-pruss-uio.dtsi include and set the blacklist?

Step 1: (Install dtb-rebuilder:)

#one line:
git clone -b 4.4-ti https://github.com/RobertCNelson/dtb-rebuilder --depth=1

cd ./dtb-rebuilder/

Step 2: (enable pruss-uio)

Edit your device tree: (assuming black)

https://github.com/RobertCNelson/dtb-rebuilder/blob/4.4-ti/src/arm/am335x-boneblack.dts#L26-L34

nano src/arm/am335x-boneblack.dts

Change:
/* #include "am33xx-pruss-uio.dtsi" */ -> #include "am33xx-pruss-uio.dtsi"
make ; sudo make install

Step 3: (set blacklist)

cat /etc/modprobe.d/pruss-blacklist.conf

blacklist pruss
blacklist pruss_intc
blacklist pru-rproc

reboot..