[meta-freescale] Vivante GPU on i.MX6solo

Gary Thomas gary at mlbassoc.com
Wed Mar 26 03:19:44 PDT 2014

On 2014-03-25 06:08, Otavio Salvador wrote:
> On Tue, Mar 25, 2014 at 9:03 AM, Gary Thomas <gary at mlbassoc.com> wrote:
>> 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.
> Great; this should get it working.

I've merged up to the latest boundary branch+rev and now the
GPU is working on my i.MX6solo :-)


Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world

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