Re: sunxi mali binary driver

[Trevor Woerner <twoerner@gmail.com>]

Hi Nicolas,

On 09/22/15 14:34, Nicolas Aguirre wrote:
> 2015-09-22 19:27 GMT+02:00 Trevor Woerner <twoerner@gmail.com>:
>> Hello,
>>
>  Hi Trevor,
>
>> I'm trying to build an image for my cubietruck that uses the binary
>> accelerated mali driver (sunxi-mali) and have a couple questions.
>>
>> It was my impression that the binary user-space libraries (sunxi-mali?)
>> only work with specific versions of the kernel.
>>
> sunxi-mali binary driver build by this recipe
> (https://github.com/linux-sunxi/meta-sunxi/blob/master/recipes-graphics/libgles/sunxi-mali_git.bb)
> only works with 3.4 kernel.
> You can find some informations about sunxi-mali here :
> http://linux-sunxi.org/Mali_binary_driver
>
> The problem is that linux-sunxi 3.4.x kernel contains mali r3p0 driver
> (https://github.com/linux-sunxi/linux-sunxi/tree/sunxi-3.4/drivers/gpu/mali)
> where linux mainline doesn't.

Thank you for the clarification! That's what I thought, but the fact the
binary was being included with the mainline had me confused :-)

>> By default the cubietruck machine definition will try to build the
>> upstream kernel, but by default it also sets the preferred providers of
>> egl, gles1, and gles2 to sunxi-mali. Wouldn't that cause problems? If I
>> want to use the accelerated, binary mali driver, don't I have to stick
>> with the sunxi kernel (3.4.90) too?
>>
> We could maybe avoid the build of sunxi-mali recipe when a mainline
> kernel is built.

Ok, I could take a look at that too.

Best regards,
    Trevor