Re: DSS2: How to test TV and LCD output simulatenously

[Gary Thomas <gary@mlbassoc.com>]

Venkatesh, Subbu wrote:
> Hello Gary,
> I have already emailed the patch, here is the link..
>  http://patchwork.kernel.org/patch/24196/

Thanks, I'll give it a try.

> ________________________________________
> From: Gary Thomas [gary@mlbassoc.com]
> Sent: Tuesday, June 02, 2009 10:38 AM
> To: Venkatesh, Subbu
> Cc: linux-omap@vger.kernel.org; Shah, Hardik; tomi.valkeinen@nokia.com
> Subject: Re: DSS2: How to test TV and LCD output simulatenously
> 
> Venkatesh, Subbu wrote:
>> Hi Gary,
>> LDP is a development board, I have to work on LDP panel driver  and BSP code to support new DSS2, It is ported on linux-omap tree.
>> I am still working on testing the features. For camera I might move into V4l2, but I cannot confirm this, I am still working on testing the Framebuffer features.
> 
> How much of this can you share?  I'd like to try this on my LDP (Zoom1)
> and then get it ported to my own hardware (very similar to Zoom1)
> 
> Thanks
> 
>> ________________________________________
>> From: Gary Thomas [gary@mlbassoc.com]
>> Sent: Tuesday, June 02, 2009 6:52 AM
>> To: Venkatesh, Subbu
>> Cc: linux-omap@vger.kernel.org; Shah, Hardik; tomi.valkeinen@nokia.com
>> Subject: Re: DSS2: How to test TV and LCD output simulatenously
>>
>> Venkatesh, Subbu wrote:
>>> Hi,
>>> I have DSS2 ported on LDP board, I could manage to get output display on TV and LCD interface individually, also tested some of the features like Rotation and Mirroring, they worked with out any problem.
>> What does "DSS2 ported on LDP board" mean?  What source tree/branch did you use?
>>
>>> Now I am trying to get output both on TV and LCD simultaneously,
>>>
>>> I was not successful with my approach that I tried, like
>>>
>>> 1. Boot the kernel with the default LCD display
>>> 2. Then I enabled ntsc timings for TV, as PAL do not work on it.
>>>     #echo ntsc > /sys/devices/platform/omapdss/display1/timings
>>> 3. Enabled TV
>>>   # echo 1 > /sys/devices/platform/omapdss/display1/enable
>>> and did the common fb test....
>>> But it did not seem to work.
>>> Its nice if someone has different working approach or can suggest me where I am going wrong in the above steps.
>> Is this stuff documented somewhere?  Like the difference
>> between DSS1 and DSS2?  How the various layers and overlays
>> are supposed to work?  What about the camera interface?

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------