Re: DSS2 TV settings

[Gary Thomas <gary@mlbassoc.com>]

halli manjunatha wrote:
> Hi Thomas,
> 
>>> [not 100% related] The documentation says that TI is working on
>>> the V4L2 support.  Do you know the status of this?  where I might
>>> find it?
>> I cannot help you with this. There have been mails about it on
>> linux-omap and v4l2 lists, so you could search those archives.
> 
> There is a public repository representing the V4L2 driver on the
> Tomi's DSS patches.  Here is the link to that.
> 
> http://arago-project.org/git/people/vaibhav/ti-psp-omap-video.git?p=people/vaibhav/ti-psp-omap-video.git;a=shortlog;h=refs/heads/ti_display
> 

Thanks for the pointer.

Which board(s) has this been tested with (so I can look at the configs)?
What are you using to test it with?

I noticed that your tree is 2.6.30-rc7, Tomi's is -rc8.  There are quite
a few differences (> 1MB patch file).  How can I reconcile what you've
changed with my working tree (which is based on Tomi's 2.6.30-rc8 tree)?

Thanks for any help

> On Thu, Jun 11, 2009 at 11:38 AM, Tomi
> Valkeinen<tomi.valkeinen@nokia.com> wrote:
>> Hi,
>>
>> On Wed, 2009-06-10 at 19:17 +0200, ext Gary Thomas wrote:
>>> Tomi,
>>>
>>> I'm running your latest DSS2 tree and have some questions about
>>> the TV settings.  The timings, as published, don't work all that
>>> well on our TV sets.  When I display a frame buffer to the TV
>>> (using the recipe from the Documentation directory), some of
>>> the actual frame buffer does not show on the screen.  In particular,
>>> if I have "tux" from the default system console framebuffer
>>> showing, the top of his head is chopped off, as is a fair
>>> amount of his left side.  Further tests show that some amount
>>> of the frame buffer is not present on all margins.
>>>
>>> Is this to be expected?
>>> Can the timings be adjusted so that the whole frame buffer shows?
>> That is to be expected. I'm not an expert on analog TVs, but I think
>> analog TVs always have non-visible areas. Some TVs show more of the
>> total frame, and some show less.
>>
>> You need to adjust the overlay position and size so that it's fully
>> visible on the TV. I guess there are some sane defaults that are more or
>> less ok for every TV out there, and omapfb could use those defaults, but
>> I haven't really had time to study the TV out.
>>
>>> [not 100% related] The documentation says that TI is working on
>>> the V4L2 support.  Do you know the status of this?  where I might
>>> find it?
>> I cannot help you with this. There have been mails about it on
>> linux-omap and v4l2 lists, so you could search those archives.

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