Hello, I am trying to use both the "cape-bone-iio" device tree overlay for analog input, and a simple pin-muxing overlay (see attached DTS file) to change the direction of various gpio pins. Although they both work on their own, it seems that there is a problem when loaded together. The first overlay always works, and the second *seems* to load just fine, but does not take effect..
*Example 1 (first load cape-bone-iio, then DM-GPIO-Test)* root@beaglebone:~# echo cape-bone-iio > $SLOTS [ 70.330541] bone-capemgr bone_capemgr.8: part_number 'cape-bone-iio', version 'N/A' [ 70.341287] bone-capemgr bone_capemgr.8: slot #7: generic override [ 70.347943] bone-capemgr bone_capemgr.8: bone: Using override eeprom data at slot 7 [ 70.355978] bone-capemgr bone_capemgr.8: slot #7: 'Override Board Name,00A0,Override Manuf,cape-bone-iio' [ 70.368667] bone-capemgr bone_capemgr.8: slot #7: Requesting part number/version based 'cape-bone-iio-00A0.dtbo [ 70.380219] bone-capemgr bone_capemgr.8: slot #7: Requesting firmware 'cape-bone-iio-00A0.dtbo' for board-name 'Override Board Name', version '00A0' [ 70.395034] bone-capemgr bone_capemgr.8: slot #7: dtbo 'cape-bone-iio-00A0.dtbo' loaded; converting to live tree [ 70.407309] bone-capemgr bone_capemgr.8: slot #7: #1 overlays [ 70.421631] bone-iio-helper helper.14: ready [ 70.433579] bone-capemgr bone_capemgr.8: slot #7: Applied #1 overlays. root@beaglebone:~# ls /sys/devices/ocp.2/helper.14/ AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 driver modalias power subsystem uevent root@beaglebone:~# ls /sys/bus/iio/devices/iio\:device0 buffer in_voltage0_raw in_voltage2_raw in_voltage4_raw in_voltage6_raw name scan_elements trigger dev in_voltage1_raw in_voltage3_raw in_voltage5_raw in_voltage7_raw power subsystem uevent root@beaglebone:~# echo DM-GPIO-Test > $SLOTS [ 286.033107] bone-capemgr bone_capemgr.8: part_number 'DM-GPIO-Test', version 'N/A' [ 286.043079] bone-capemgr bone_capemgr.8: slot #8: generic override [ 286.049605] bone-capemgr bone_capemgr.8: bone: Using override eeprom data at slot 8 [ 286.057622] bone-capemgr bone_capemgr.8: slot #8: 'Override Board Name,00A0,Override Manuf,DM-GPIO-Test' [ 286.071044] bone-capemgr bone_capemgr.8: slot #8: Requesting part number/version based 'DM-GPIO-Test-00A0.dtbo [ 286.082390] bone-capemgr bone_capemgr.8: slot #8: Requesting firmware 'DM-GPIO-Test-00A0.dtbo' for board-name 'Override Board Name', version '00A0' [ 286.103360] bone-capemgr bone_capemgr.8: slot #8: dtbo 'DM-GPIO-Test-00A0.dtbo' loaded; converting to live tree [ 286.115233] bone-capemgr bone_capemgr.8: slot #8: #2 overlays [ 286.122388] bone-capemgr bone_capemgr.8: slot #8: Applied #2 overlays. root@beaglebone:~# cat $PINS | grep 998 pin 102 (44e10998) 00000027 pinctrl-single *<-- unchanged* 0: 54:PF--- 1: 55:PF--- 2: 56:PF--- 3: 57:PF--- 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI 7: ff:P-O-L Override Board Name,00A0,Override Manuf,cape-bone-iio 8: ff:P-O-L Override Board Name,00A0,Override Manuf,DM-GPIO-Test *Example 2 (first load DM-GPIO-Test, then cape-bone-iio)* root@beaglebone:~# cat $PINS | grep 998 pin 102 (44e10998) 00000027 pinctrl-single *<-- default value* root@beaglebone:~# echo DM-GPIO-Test > $SLOTS [ 90.459668] bone-capemgr bone_capemgr.8: part_number 'DM-GPIO-Test', version 'N/A' [ 90.469663] bone-capemgr bone_capemgr.8: slot #7: generic override [ 90.476312] bone-capemgr bone_capemgr.8: bone: Using override eeprom data at slot 7 [ 90.484332] bone-capemgr bone_capemgr.8: slot #7: 'Override Board Name,00A0,Override Manuf,DM-GPIO-Test' [ 90.496939] bone-capemgr bone_capemgr.8: slot #7: Requesting part number/version based 'DM-GPIO-Test-00A0.dtbo [ 90.508493] bone-capemgr bone_capemgr.8: slot #7: Requesting firmware 'DM-GPIO-Test-00A0.dtbo' for board-name 'Override Board Name', version '00A0' [ 90.530293] bone-capemgr bone_capemgr.8: slot #7: dtbo 'DM-GPIO-Test-00A0.dtbo' loaded; converting to live tree [ 90.542078] bone-capemgr bone_capemgr.8: slot #7: #2 overlays [ 90.554967] bone-capemgr bone_capemgr.8: slot #7: Applied #2 overlays. root@beaglebone:~# cat $PINS | grep 998 pin 102 (44e10998) 00000037 pinctrl-single *<-- expected value from what was in the overlay* root@beaglebone:~# echo cape-bone-iio > $SLOTS [ 224.500468] bone-capemgr bone_capemgr.8: part_number 'cape-bone-iio', version 'N/A' [ 224.510629] bone-capemgr bone_capemgr.8: slot #8: generic override [ 224.517183] bone-capemgr bone_capemgr.8: bone: Using override eeprom data at slot 8 [ 224.525207] bone-capemgr bone_capemgr.8: slot #8: 'Override Board Name,00A0,Override Manuf,cape-bone-iio' [ 224.538451] bone-capemgr bone_capemgr.8: slot #8: Requesting part number/version based 'cape-bone-iio-00A0.dtbo [ 224.550076] bone-capemgr bone_capemgr.8: slot #8: Requesting firmware 'cape-bone-iio-00A0.dtbo' for board-name 'Override Board Name', version '00A0' [ 224.564897] bone-capemgr bone_capemgr.8: slot #8: dtbo 'cape-bone-iio-00A0.dtbo' loaded; converting to live tree [ 224.576965] bone-capemgr bone_capemgr.8: slot #8: #1 overlays [ 224.591865] bone-capemgr bone_capemgr.8: slot #8: Applied #1 overlays. root@beaglebone:~# ls /sys/devices/ocp.2/helper.14/ driver modalias power state subsystem uevent <-- missing AIN* files here, but the files in /sys/bus/iio/.. seem to get populated as expected root@beaglebone:~# ls /sys/bus/iio/devices/iio\:device0 buffer in_voltage0_raw in_voltage2_raw in_voltage4_raw in_voltage6_raw name scan_elements trigger dev in_voltage1_raw in_voltage3_raw in_voltage5_raw in_voltage7_raw power subsystem uevent 0: 54:PF--- 1: 55:PF--- 2: 56:PF--- 3: 57:PF--- 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G 5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI 7: ff:P-O-L Override Board Name,00A0,Override Manuf,DM-GPIO-Test 8: ff:P-O-L Override Board Name,00A0,Override Manuf,cape-bone-iio If anyone can provide some insight on this, it would be greatly appreciated. I'm not sure if this is an issue with the cape manager, or maybe the bone-iio-helper or bone-pinmux-helper driver? I have also tried the "BB-SPI0-01" overlay with my others and they seem to get along just fine. FYI I am running Linux beaglebone 3.8.13 #1 SMP Wed Sep 4 and Cloud9 GNOME Image 2013.09.04. Thanks so much for any help!! - Chris -- 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]. For more options, visit https://groups.google.com/groups/opt_out.
