Linux kernel with rpmsg and possibility for compiling powervr drivers

C.A, Subramaniam subramaniam.ca at ti.com
Fri Mar 16 20:14:16 UTC 2012


Mertsas,

On Fri, Mar 16, 2012 at 10:58 AM, Martin Ertsas (mertsas)
<mertsas at cisco.com> wrote:
>
>
>
>
>
> Sent from Samsung Mobile
>
> Andy Green <andy.green at linaro.org> wrote:
> On 03/16/2012 10:46 PM, Somebody in the thread at some point said:
>
>> If you look at tilt-android-tracking, there is a complete 1.8 SGX
>> (usable on ICS) on fairly recent basis which includes its own rpmsg
>> stack as part of the SGX port.  The matching userlands are available via
>> google AOSP.
>>
>>
>> http://git.linaro.org/gitweb?p=landing-teams/working/ti/kernel.git;a=shortlog;h=refs/heads/tilt-android-tracking
>>
>> We also have what's currently only working on
>>
>>
>> I was a bit unclear. Sorry. First, we are thinking of using Linux for
>> this task instead of Android. We want rpmsg support to get access to the
>> m3 devices for h264 encoding and decoding. with pvr I basically meant a
>> dss which can be used to compile rsalvetis pvr omap 4 kernel module.
>
> Bit unclear is an understatement in this case ^^ rpmsg is a complete red
> herring then.
>
> 1.7 SGX as currently used in Ubuntu does not use rpmsg.  All the
> currently available mm decode solutions for Ubuntu don't use it yet
> either, they use its predecessor "syslink".
>
> If you check out tilt-3.1 branch from our repo that has working syslink
> + tiler pieces needed by the mm decode pieces in Ubuntu and will build
> against SGX dkms.
>

I seemed to have missed some conversation here. Just wanted to check if you
still have trouble getting a kernel with rpmsg and pvr? I am not aware
of the pvr part of things but for the rpmsg stuff,
like Andy mentioned the one tilt has is a different from the
up-streamed one. You will get a lot more features in the tilt version
of it. The flip side being, it is dependent on ion. Can you elaborate
what you are trying to achieve with rpmsg? You definitely need tiler
driver support too to  get h264 decoder working. Personally, I think ,
you are better off moving to rpmsg, as you can expect more support in
future on this. I might not be aware of all the minute details but
could help you out on the rpmsg part.


> -Andy
>
> --
> Andy Green | TI Landing Team Leader
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>
> So what you are basically saying is forget rpmsg for the time being? Do you
> know if  gst-ducati works with syslink then?
>
> thank you so much for your help so far.
>
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-- 

Thank you and Regards
Subbu



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