thank you, this solved the problem. On Wednesday, December 28, 2016 at 10:40:34 AM UTC-5, Kevin Cox wrote: > > Hello > > I am trying to enable and use eqep0 on my BBB (kernel 4.4.30-ti-r64) and > am encountering a pin conflict (pin 107) between the eqep driver and mcasp > driver > > From dmesg output: > > [ 41.150493] eqep 48300180.eqep: ver. 1.0 > [ 41.150628] pinctrl-single 44e10800.pinmux: pin 44e109ac.0 already > requested by 48038000.mcasp; cannot claim for 48300180.eqep > [ 41.162226] pinctrl-single 44e10800.pinmux: pin-107 (48300180.eqep) > status -22 > [ 41.169520] pinctrl-single 44e10800.pinmux: could not request pin 107 > (44e109ac.0) from group pinctrl_eqep0_pins on device pinctrl-single > [ 41.182036] eqep 48300180.eqep: Error applying setting, reverse things > back > > > In /boot/uEnv.txt I enable bone_eqep0 and disable HDMI with/without audio: > > ##Example v4.1.x > cape_disable=bone_capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN > cape_enable=bone_capemgr.enable_partno=BB-UART1,bone_eqep0 > > In /opt/bb.org-overlays/src/arm/bone_eqep0-00A0 shows the following pins > being used which none of them map to pin 107 on my BBB: > > pinctrl-single,pins = < > BONE_P9_42B (PIN_INPUT | MUX_MODE1) // GPIO3_18 = EQEP0A_in > BONE_P9_27 (PIN_INPUT | MUX_MODE1) // GPIO3_19 = EQEP0B_in > BONE_P9_41B (PIN_INPUT | MUX_MODE1) // GPIO3_20 = EQEP0_index > BONE_P9_25 (PIN_INPUT | MUX_MODE1) // GPIO3_21 = EQEP0_strobe > > I have found a thread here: > https://groups.google.com/forum/#!category-topic/beagleboard/audio/YNhtwbe_b4k > > that shows how to disable mcasp0 but I am concerned that something is not > configured right as my understanding was that eqep0 should not conflict > with other hardware and especially a pin that should not overlap. Am I > missing something obvious. I thought I could just enable this driver out > of the box. > > Kevin > > >
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