Hi,
I’m trying to enable all the uarts of my beaglebone black, but it’s failing for uart5.
For uart1, uart2 and uart4 I just used the supplied BB-UART? dtbo file. For uart3 (just tx) I created a BB-UART3 myself and it worked fine.
Now, when I try to enable uart5, I got an error on dmesg telling me that it couldnt resolve the symbol “uart6”.
I’m running ubuntu with kernel 3.12, but I had the same issue on ubuntu with orignal kernel 3.8 too.
Here is the error:
root@ubuntu-armhf:/home/ubuntu# cat /sys/devices/bone_capemgr.6/slots
0: 54:PF—
1: 55:PF—
2: 56:PF—
3: 57:PF—
root@ubuntu-armhf:/home/ubuntu# echo BB-UART5 >/sys/devices/bone_capemgr.6/slots
bash: echo: write error: Invalid argument
root@ubuntu-armhf:/home/ubuntu# dmesg | tail
[ 15.344819] init: failsafe main process (336) killed by TERM signal
[ 86.463777] bone-capemgr bone_capemgr.6: part_number ‘BB-UART5’, version ‘N/A’
[ 86.463870] bone-capemgr bone_capemgr.6: slot #7: generic override
[ 86.463889] bone-capemgr bone_capemgr.6: bone: Using override eeprom data at slot 7
[ 86.463907] bone-capemgr bone_capemgr.6: slot #7: ‘Override Board Name,00A0,Override Manuf,BB-UART5’
[ 86.464002] bone-capemgr bone_capemgr.6: slot #7: Requesting part number/version based 'BB-UART5-00A0.dtbo
[ 86.464021] bone-capemgr bone_capemgr.6: slot #7: Requesting firmware ‘BB-UART5-00A0.dtbo’ for board-name ‘Override Board Name’, version ‘00A0’
[ 86.464049] bone-capemgr bone_capemgr.6: slot #7: dtbo ‘BB-UART5-00A0.dtbo’ loaded; converting to live tree
[ 86.464190] of_resolve: Could not find symbol ‘uart6’
[ 86.469611] bone-capemgr bone_capemgr.6: slot #7: Failed to resolve tree
Any ideas?