Hi again, I have some mature PRU firmware that I've been loading and starting by having a program <https://github.com/stepleton/cameo/blob/master/aphid/profile.py#L262> manipulate the files /sys/class/remoteproc/remoteproc[12]/(state|firmware) well after the system has booted.
I'd like to speed that process up, so today I've finally copied my firmware files to /lib/firmware/am335x-pru0-fw and /lib/firmware/am335x-pru1-fw . Now, I did do sudo update-initramfs -uk `uname -r` ; sudo reboot like you're supposed to. I can even do zcat /boot/initrd.img-4.19.50-ti-r20 | cpio -itv and see my firmware files inside the file (albeit as /usr/lib/firmware/am335x-pru[01]-fw). When the PocketBeagle boots, the firmware is listed correctly within /sys/class/remoteproc/remoteproc?/firmware files, it's just that the neighbouring "state" files show that both PRUs are "offline". I can echo "start" into those files and things work fine, but as I'm trying to accelerate the time from boot to a running system, it would be really nice if the firmware could start automatically on boot, as quickly as possible. I'm using this firmware in concert with a new device tree overlay I've also been developing, which is the subject of another thread <https://groups.google.com/g/beagleboard/c/Ro2PioeoN-c/m/Cd2d0YRGBAAJ>. If you like, you can view it at http://mg-1.uk:31132/pb-cameo-aphid.dts.txt Perhaps something is missing in there? I based some of its design off of information in https://groups.google.com/g/beagleboard/c/lS8QlNV8JCc , which to be fair is now a healthy 3.5 years old... Thanks for any help, --Tom -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/e3580edd-15ab-46f7-aa7c-2d476692ca5cn%40googlegroups.com.
