On Sat, May 16, 2020 at 8:29 PM <[email protected]> wrote: > > Hi, > I'm trying to fix an error in my beaglebone green in which several PRU pin > directories are not available. I'm using image 4.19.50-ti-r20. I'm using, > Debian 10.2 which I have experienced as working well with the BBB and BBG. > The pins directories that don't show up are a sub-set of the 35 or so real > time PRU I/O pins. These pins are supposed to be available are subdirectories > of /sys/devices/platform/ocp/, as follows: > ocp:P8_11_pinmux > ocp:P8_12_pinmux* > ocp:P8_14_pinmux > ocp:P8_15_pinmux* > ocp:P8_16_pinmux > ocp:P8_17_pinmux > ocp:P8_18_pinmux > ocp:P9_28_pinmux* > ocp:P9_29_pinmux* > ocp:P9_30_pinmux* > ocp:P9_31_pinmux* > > The ones (6 of them) with the asterisk are the real time PRU Input / Output > pins that I really really need for my application. > > Notes: > This is on the Beaglebone Green, not the Beaglebone Black, I'll check if the > same problem shows up on BBB as well a little later... > This is image 4.19 > I have already gone into the /boot/uEnv.txt file and disabled the following: > HDMI, audio, emmc. But I still have this same problem. > > Is this a bug in the kernel / image ? > > In reviewing page 211 of Derek Molloy's Exploring Beaglebone book, I can't > see a pattern of all these pins belonging to a certain interface, so I cannot > even guess what interface might be causing them to become not available. > > Please let me know if you have any ideas on this.
This smells like a mis-configuration, please run: sudo /opt/scripts/tools/version.sh and share it's output so we can help debug.. Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYgYwF9qddfpbTM_oWo%2BmUL%3Ddh6hsoHw0RVsreRr4%2BKrTg%40mail.gmail.com.
