BBB + LCD7 issues

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BBB + LCD7 issues

Postby linarchbb » Sun Jan 05, 2014 10:58 pm

Hello everyone,
Trying to get BBB to work with LCD7 cape from 4D Systems (original LCD7 clone).
looks like an issue with the .dts file.
I'v been pulling my hair for a few days ...
Any help greatly appreciated.
TX

Kernel Version
Linux alarm 3.12.6-1-ARCH #1 SMP Mon Dec 30 09:47:04 MST 2013 armv7l GNU/Linux

Relevant DMESG output
...
[ 2.245008] bone-capemgr bone_capemgr.6: slot #0: dtbo 'BB-BONE-LCD7-01-00A3.dtbo' loaded; converting to live tree
[ 2.297423] of_resolve: Could not find symbol 'ocp'
[ 2.302617] bone-capemgr bone_capemgr.6: slot #0: Failed to resolve tree
[ 2.309725] bone-capemgr bone_capemgr.6: loader: failed to load slot-0 BB-BONE-LCD7-01:00A3 (prio 0)
...
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Re: BBB + LCD7 issues

Postby WarheadsSE » Mon Jan 06, 2014 2:14 am

linux-am33x-legacy
Core Developer
Remember: Arch Linux ARM is entirely community donation supported!
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Re: BBB + LCD7 issues

Postby linarchbb » Mon Jan 06, 2014 10:02 am

Hello,
the 3.8 Kernel was the first fix that i tried ... BBB failed to boot...
Any workaround for 3.12?
TX
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Re: BBB + LCD7 issues

Postby DonAlfredo » Fri Jan 24, 2014 6:55 am

No LCD work around for 3.12 !

You have to use 3.8 (legacy).

And if you use this kernel, you will notice that the touchscreen does not work correctly due to a bad driver for this board.
The cursor will jump around and show a lot of jitter.

The driver (ti_am335x_tsc) has some serious flaws. This driver is build-in into the kernel. So you need a new kernel.
I made one with a good working driver for the touch-screen. Works 100% for me !

https://drive.google.com/file/d/0B0llA4 ... sp=sharing

Install with pacman -U filename.

Would you be so kind to test it for me, and make comments and remarks ?

Greetings, Alfred.
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