Thanks for the help! Tim
On Sunday, June 15, 2014 10:34:05 PM UTC-5, crazybucket wrote: > > You can combine to contents of the overlays into one custom overlay and > load that (after you compile it with the device tree compiler). > > On Thursday, June 12, 2014 3:31:40 PM UTC-5, tim.r...@gmail.com wrote: >> >> I was having an issue loading multiple device tree overlays. I was hoping >> that someone could help me or maybe point me to a discussion thread I have >> overlooked. >> >> The issue is that I have three device tree overlays that I would like to >> manually upload on my beaglebone. However, only the first of the overlays >> that I echo to slots will show up on pingroups and be recognized by the >> machine. >> >> >> My device info: >> >> root@arm:/boot/uboot# uname -a >> Linux arm 3.8.13-bone40 #1 SMP Fri Jan 31 07:31:37 UTC 2014 armv7l >> GNU/Linux >> >> This is how my slot configuration appears upon starting. As can be seen >> there are 4 overlays that are automatically loaded: >> >> root@arm:/lib/firmware# cat /sys/devices/bone_capemgr.8/slots >> 0: 54:PF--- >> 1: 55:PF--- >> 2: 56:PF--- >> 3: 57:PF--- >> 4: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART2 >> 6: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART4 >> 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART5 >> 8: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPIDEV1 >> >> Using the command below I am able to manually add an overlay. This will >> be recognized in the pingroups without issue. >> >> root@arm:/lib/firmware# echo enable-uart3 > >> /sys/devices/bone_capemgr.8/slots >> >> How my slots appear after the addition. >> >> 0: 54:PF--- >> 1: 55:PF--- >> 2: 56:PF--- >> 3: 57:PF--- >> 4: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART2 >> 6: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART4 >> 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART5 >> 8: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPIDEV1 >> 11: ff:P-O-L Override Board Name,00A0,Override Manuf,enable-uart3 >> >> However when I try to add another overlay, it appears in slots but does >> have any effect in pingroups. The commands I used are below. >> >> root@arm:/lib/firmware# echo enable-gpio32> >> /sys/devices/bone_capemgr.8/slots >> >> root@arm:/boot/uboot# cat /sys/devices/bone_capemgr.8/slots >> 0: 54:PF--- >> 1: 55:PF--- >> 2: 56:PF--- >> 3: 57:PF--- >> 4: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART2 >> 6: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART4 >> 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART5 >> 8: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPIDEV1 >> 11: ff:P-O-L Override Board Name,00A0,Override Manuf,enable-uart3 >> 12: ff:P-O-L Override Board Name,00A0,Override Manuf,enable-gpio32 >> >> My third overlay is called enable-dcan1 but it exhibits the same behavior >> as above so I will not show the process of adding it. >> >> Initially assumed that I had compiled an overlay incorrectly, but upon >> further experimentation I realized that the first overlay was always the >> one that got recognized by the machine and the other two were ignored. >> >> A few of my thoughts: >> >> Could the skipping of slots (4-6) and (8-11) be causing some sort of >> issue. >> >> Is there a maximum number of possible overlays that I have reached which >> prevents any more from being recognized. >> >> >> I would appreciate any help that people can supply. >> >> Thanks, >> Tim Rackers >> > -- 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/d/optout.
