Hi everyone,
I've compiled angstrom-v2015.06 for the beaglebone. Unfortunately, no matter
what I do, I cannot get the LCD7 display (one of these:
http://elinux.org/CircuitCo:BeagleBone_LCD7) to work. I'm using
bootdelay=0
dtb=am335x-boneblack-overlay.dtb
as a uEnv.txt file and the cape seems to be loaded correcly
root@beaglebone:~# cat /sys/devices/platform/bone_capemgr/slots
0: P---L- 0 4D 7.0 LCD CAPE- 4DCAPE-70T ,00A3,4D SYSTEMS
,BB-BONE-LCD7-01
1: PF---- -1
2: PF---- -1
3: PF---- -1
and
root@beaglebone:~# dmesg | grep capemgr
[ 4.770384] bone_capemgr bone_capemgr: Baseboard:
'A335BNLT,00C0,3614BBBK6104'
[ 4.777668] bone_capemgr bone_capemgr:
compatible-baseboard=ti,beaglebone-black - #slots=4
[ 4.821749] bone_capemgr bone_capemgr: slot #0: '4D 7.0 LCD CAPE- 4DCAPE-70T
,00A3,4D SYSTEMS ,BB-BONE-LCD7-01'
[ 4.887718] bone_capemgr bone_capemgr: slot #1: No cape found
[ 4.947716] bone_capemgr bone_capemgr: slot #2: No cape found
[ 5.007716] bone_capemgr bone_capemgr: slot #3: No cape found
[ 5.013789] bone_capemgr bone_capemgr: initialized OK.
[ 6.270174] bone_capemgr bone_capemgr: slot #0: dtbo
'BB-BONE-LCD7-01-00A3.dtbo' loaded; overlay id #0
But the display stays black. I've fiddled around with a couple of diffent
kernel options since I saw those on the ancient angstrom 2013 that I still had
floating around (which does show me the login screen on the lcd) like
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
But they don't seem to do anything. The display hardware works fine, since an
off the stock debian image and the angstrom I compiled (without changing
anything) back in 2013 show me a login screen on the lcd. I've also swapped out
the beaglebone black since I have a second one available, so it's not the BBB
hardware either.
I'm feeling like I'm missing something obvious. Is there something I need to
tell the uBoot to send output to the lcd?
Any help or pointers are greatly appreciated!
Regars,
C.
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