[meta-freescale] Vivante GPU on i.MX6solo

[Otavio Salvador]

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.

-- 
Otavio Salvador                             O.S. Systems
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