[meta-freescale] Vivante GPU on i.MX6solo

Gary Thomas gary at mlbassoc.com
Tue Mar 25 05:03:53 PDT 2014

On 2014-03-25 05:40, Otavio Salvador wrote:
> On Tue, Mar 25, 2014 at 8:03 AM, Gary Thomas <gary at mlbassoc.com> wrote:
>> On 2014-03-24 20:07, Otavio Salvador wrote:
>>> Hello Gary,
>>> On Mon, Mar 24, 2014 at 12:13 PM, Gary Thomas <gary at mlbassoc.com> wrote:
>>>> I have a board which uses the i.MX6solo chip.  This CPU (SOC) has
>>>> a different GPU than its cousins i.MX6Q and i.MX6dual.  When I try
>>>> to run anything using the accelerated graphics, e.g. X server using
>>>> the Vivante libraries, it crashes hard.
>>>> I know that my SOC has a Vivante GC880 whereas the i.MX6Q uses the
>>>> Vivante GC2000.
>>>> Is there any way to get Vivante GPU support for my board/SOC?
>>> Well, it is lacking a lot of information so it is quite hard to guess.
>>> My guess is that you have an old BSP kernel and without the 4.6.9p13
>>> patches. When those things happen you see a segfault in Xorg
>>> initialization using the Vivante drivers.
>> This well could be - I use the linux-boundary recipe for 3.0.35+
>> (my board is nearly identical to a SabreLite from Boundary Devices)
> Currently linux-boundary has it right. It depends if you have dropped
> the patches applied in our recipe or not.
>> I'm a bit confused by the '4.6.9p13' reference.  Is that part of
>> a GPU recipe version?  or a kernel version?
> Yes, GPU driver version.
>> Can you point me to any discussion of this, or the kernel (which tree)
>> revision that made this change, etc?
> https://github.com/Freescale/meta-fsl-arm-extra/commit/37c793bea49a1140a414660c262d62c3e2b130c9

Yes, it seems that I had missed this patch which seems to have only
been on master-next until 2014-03-20.

I'll give it another go now.


Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world

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