[linux-dvb] tda1004x update

Hartmut Hackmann hartmut.hackmann at t-online.de
Tue Nov 8 00:32:16 CET 2005


Hi, Michael

Michael Krufky wrote:
> Hartmut Hackmann wrote:
> 
>> I just committed an update of the tda1004x dvb-t driver to the dvb-kernel
>> CVS. It only affects the tda10046 (hopefully):
>>
>> - fixed oddities at firmware download from eeprom.
>> - more tolerant vs crystal frequency offset. It should now work with up
>>   to -/+100ppm deviation. This can be the cause why some boards like
>>   the Lifeview just didn't work for some users.
>> - lower sampling clock to 48Mhz for low IF and 53MHz for 36MHz. Together
>>   with some other minor changes, this increases the sensitivity a bit.
>> - doesn't touch the GPIOs any longer. This needs to be handled by the
>>   board layer.
>>
>> The latter change might cause incompatibilities. However, it is necessary
>> since the pins are used very differently. I could not find problems with
>> boards i have access to. 
> 
> 
> Hartmut-
> 
> What is the status of the testings with this patch?  Your announcement 
> mentions some possible incompatabilities...
> 
> Mauro has already send your v4l patches to -mm... Do they depend on this 
> one?
> 
> -Michael Krufky
> 
Hi, Michael

I haven't heard anything but few reports that it gave the slight performance
improvement i expected.
I tested with 4 different cards: Lifeview, Philips Tiger and Europa and the
Medion. The Philips cards are at least compatible with the Compro and the ASUS.
I can get hands on one other important card in short term.
So there is quite some test coverage.
The GPIO thing can cause trouble with modern hybrid cards like the ASUS which
need proper handling of the GPIOs.

Hermann, can you roll back the tda1004x driver to see whether the old version
works with your card?

This went a bit fast. I didn't expect that Mauro would update the patches
again...

Hartmut



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