topic Re: i.MX53 QSB Ubuntu customisation, VPU problem in i.MX Processors

i.MX53 QSB Ubuntu customisation, VPU problem

t_herbrecher — Wed, 07 Nov 2012 21:28:59 GMT

Hello together,

we created a custom board with the i.MX537 for industrial applications. For test purposes we wanted to use the Ubuntu 10.04 Rootfilesystem to play a video via HDMI. The 1080p output via HDMI works perfect but when we want to play a video (the Sintel-Trailer.mp4 for example) causes an fatal error in the totem player, the gpu-sdk gui-example shows the videos as fat coloured stripes. Both explained test cases work on the QSB. We used the imx-2.6.35_11.09 tag of the freescale-git (uboot and kernel) plus the patches from the freescale download page for customization.

Now I have some questions.

1. Is there a difference between the i.MX535 processor used on the QSB and the i.MX537 on our board that could cause the described errors?

2. When we load the described compiled kernel scources (git-tag plus patches) to the QSB and start to play a video on Ubuntu the IPU crashes with IPU_STATE5 and IPU_STATE10 error messages. Where is the difference of the kernel we compiled and the kernel used on the SD-card which is shipped with the QSB and the Ubuntu on it? Is the kernel source for the Ubuntu on the SD-card available out there or does anyone have the kernel-config used for this kernel?

Thanks in advance for your answers.

Best regards,

Timo

Re: i.MX53 QSB Ubuntu customisation, VPU problem

koobla — Fri, 09 Nov 2012 08:45:36 GMT

Hi Timo,

I can help a little at least for 2.: zcat /proc/config.gz (by default, the built kernels provide the config used)

Simon

Re: i.MX53 QSB Ubuntu customisation, VPU problem

daiane_angolini — Fri, 09 Nov 2012 17:13:16 GMT

When did you take the kernel?

Are you using this kernel http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/log/?h=imx_2.6.35_11.09.01 ?

Are you sure you have this patch: ENGR00230807 mxc v4l2 output:Use triple buffer for icbypass case

???

Re: i.MX53 QSB Ubuntu customisation, VPU problem

t_herbrecher — Mon, 12 Nov 2012 07:48:13 GMT

I took the kernel which was tagged as Release in the git (691c08adeed64d5153937a0e31aaf4c251924471) and applied the patches from the download section of the freescale website.

Thank you for the hint with the new patch I'll update my kernel to the latest revision and will give it a try.

Timo

Re: i.MX53 QSB Ubuntu customisation, VPU problem

daiane_angolini — Mon, 12 Nov 2012 12:19:38 GMT

Please, let us know the result.