Hi, yesterday I was finally able to get it working! I think that "agni..." is having the same error: when executing the "echo" of eqep in slots I get the same "invalid argument" error. I get the additional details executing a dmesg command.
Investigating on device tree, I found that form some reason the installation script didn't installed the DTB files on the SD. >From what I understood: 1. the patch should add the EQEP tree items in "linux-dev/KERNEL/arch/arm/boot/dts/am33xx.dtsi" (you can verify searching for "eqep" in it) 2. The "./tools/rebuild.sh" should build the DTB files and create an updated tar.gz file in "linux-dev/deploy" with the new version of the device tree 3. Then the "./tools/install_kernel.sh" should install the kernel and copy the new DTB to the correct destination folder Suspecting to have outdated DTB, I deleted the "linux-dev/KERNEL/arch/arm/boot/dts/am335x-*.dtb" and re-executed the point 2. This re-created the DTB files. Then I manually copied them to the SD, in the "/boot" partition (and a subfolder that I don't remember in this moment, but you can find easily since it contains the same files). This fixed my issue!!! Sincerly I suspect that my version of "./tools/install_kernel.sh" is newer than the one shown in http://www.youtube.com/watch?v=HJ9nUqYMjqs . But I don't know if this is a real bug or it is caused by my configuration. To get the encoder to work I also had to disable HDMI and HDMIN, as explained in https://groups.google.com/forum/#!topic/beagleboard/aU__9RGq3xU Hope this helps. Cheers Lo Il giorno lunedì 20 gennaio 2014 22:51:46 UTC+1, tbh ha scritto: > > Nathaniel's driver worked fine for me. > > @Lorenzo: Are you sure you rebuilt the kernel correctly with the eqep > driver patch? I am quite inexperienced with device trees so you probably > shouldn't listen to me, but it looks like you built the device tree > fragments correctly but the underlying mechanism can't find the actual > driver. > > agni...@gmail.com: Can you provide a little more information? What's the > exact command you used and the exact error message? > -- 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. For more options, visit https://groups.google.com/groups/opt_out.
