Well, I found half my answer. A simple: *config-pin -a P8_11 qep* *config-pin -a P8_12 qe*p
gets the eQEP pin muxes set, but once set how do I export them? *cd /sys/devices/platform/ocp/48304000.epwmss/48304180.eqep* *ls* driver_override modalias of_node power subsystem uevent There are no period, or position files to read. --Mark On Wednesday, September 14, 2016 at 4:22:06 PM UTC-4, Mark A. Yoder wrote: > > Hi: > I'm running BeagleBoard.org Debian Image 2016-08-28 which is running > the 4.4.19-ti-r41 kernel. I've disabled the HDMI (audio and video) and > want to use the eQEPs. > > *ls /lib/firmware/ | grep -i eqep* > bone_eqep0-00A0.dtbo > bone_eqep1-00A0.dtbo > bone_eqep2-00A0.dtbo > bone_eqep2b-00A0.dtbo > PyBBIO-eqep0-00A0.dtbo > PyBBIO-eqep1-00A0.dtbo > PyBBIO-eqep2-00A0.dtbo > PyBBIO-eqep2b-00A0.dtbo > > shows I have several options. However none seem to work. > > *echo bone_eqep1 > $SLOTS* > -bash: echo: write error: File exists > *dmesg* > [Sep14 16:15] bone_capemgr bone_capemgr: part_number 'bone_eqep1', version > 'N/A' > [ +0.000075] bone_capemgr bone_capemgr: slot #9: override > [ +0.000045] bone_capemgr bone_capemgr: Using override eeprom data at > slot 9 > [ +0.000046] bone_capemgr bone_capemgr: slot #9: 'Override Board > Name,00A0,Override Manuf,bone_eqep1' > [ +0.012094] bone_capemgr bone_capemgr: slot #9: bone_eqep1 conflict > P8.35 (#4:univ-emmc) > [ +0.008573] bone_capemgr bone_capemgr: slot #9: Failed verification > > So it looking like the emmc overlay is controlling the pin. > > What's the correct way to get emmc overlay to let me use the pin? > > Do I have to get dtb-4.4-ti and edit am335x-boneblack-emmc-overlay.dtb? > If so, what do I edit? > > I'm looking for a general approach that I can apply to other pins I want > to control. > > Thanks... > > --Mark > -- 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/e476efbe-ffa1-4356-8200-e6f0e32bc3c7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
