Galcore module probing error -22

Technical Support
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1

Hi all,

Currently I’m using toradex_4.9-2.3.x-imx kernel for my Buildroot system and I plan to do some testing on th Vivante GPU using the examples provided by Freescale :

1627-viv-gpu-examples.png
1627-viv-gpu-examples.png835×442 34.8 KB

But I’ve got errors for following tests :

root@imx-buildroot:~# /usr/share/examples/viv_samples/cl11/UnitTest/clinfo 

>>>>>>>> /usr/share/examples/viv_samples/cl11/UnitTest/clinfo Starting...


 !!! Error # -1001 at line 156 , in file main.cpp !!!

 !!! Exiting...

root@imx-buildroot:~# /usr/share/examples/viv_samples/cl11/fft/fft 1024
Block size: 16 
Print result: yes 
Initializing device(s)...
ERROR:: -32 clCreateContextFromType failed

Also, I noticed that the gpu-viv’s driver (i.e. galcore module was failed to load) :

root@imx-buildroot:~# dmesg | grep -i  galcore
[    2.766399] Galcore version 6.2.4.150331
[    2.766630] galcore: probe of 130000.gpu failed with error -22

I’d like to know if this galcore.ko relates to the above tests and why did it fail to load, please ?

Thanks in advance,
Khang

2

Please note that we do not really support buildroot. In OpenEmbedded, I know that the downstream Vivante driver does get built out-of-tree and resp. recipe does therefore disable it in-kernel. How any of this is handled in buildroot I do not know, sorry.

3

Hi Marcel,

It’s sad to hear that Buildroot is not supported by Toradex but it is our own approach.

Thanks for your effort to support so far.

Regards,
Khang

4

You are very welcome.