kmssink : Cannot Open /dev/mxc_vpu with Mainline kernel

[Fabio Estevam]

Hi Chakra/Jagan,

On Tue, Sep 5, 2017 at 3:55 PM, Fabio Estevam <festevam at gmail.com> wrote:
> On Tue, Sep 5, 2017 at 2:23 PM, Chakra D <2chakrass at gmail.com> wrote:
>> Hi Fabio,
>>
>> Thanks for helping us out.
>>
>> We are using gstreamer 1.0 from buildroot and latest linux kernel from
>> mainline ( linux-next ).
>
> What does 'gst-launch-1.0 --version' give you?
>
> Are you sure you are not installing the gstreamer-imx plugins instead?

Maybe you can reference to Boundary Devices' Buildroot defconfig where
they put together a GPU/VPU support for their mx6 boards:
https://github.com/boundarydevices/buildroot-external-boundary/blob/2017.08.x/configs/nitrogen6x_qt5_gst1_4.9_defconfig

Their complete post is at:
https://boundarydevices.com/buildroot-2017-08-imx-platforms/

See the Gstreamer pipeline they use here (in the very bottom of the file):
https://github.com/boundarydevices/buildroot-external-boundary/blob/2017.08.x/README.md

Let us know if it works for you.

Regards,

Fabio Estevam