[linux-dvb] TDA10086 with Pinnacle 400e tuning broken

Dirk Brenken dirk at brenken.org
Thu Feb 7 21:58:43 CET 2008


Hi Hartmut,
I've applied your patch against latest v4l-dvb tree and the tuning 
problems with my Technotrend S-1401 (thread "TT-1401 budget card support 
broken since 2.6.24-rc6" on the list) are gone. Thanks!

Best Regards
Dirk

Hartmut Hackmann schrieb:
> Hi
> 
> hermann pitton schrieb:
>> Am Mittwoch, den 06.02.2008, 09:17 +0100 schrieb André Weidemann:
>>> Hartmut Hackmann wrote:
>>>
>>>> Are you sure that it is a lnbp21 on your board?
>>>> What kind of satellite equipment do you have?
>>>> - a single LNB, so the 22kHz tone is enough.
>>>> - a Multiswitch?
>>>>   if yes, which commands does it need / understand?
>>>>   - nothing but the tone?
>>>>   - a tone burst to switch between satellites and the tone?
>>>>   - full diseqc (2?) serial messages?
>>>>
>>>> I got a board with tda10086 and lnbp21 let and started measuring.
>>>> voltage switching and static tone work fine with the current
>>>> configuration.
>>> Hi Hartmut,
>>> I got the same tuning problems as Patrick. After your patch the Pinnacle 
>>> 400e is not working anymore. I can get a signal, but no lock at all.
>>> I took a look at the PCB and there is definitely an LNBP21PD soldered 
>>> onto it.
>>> Your patch disables the modulation of the 22kHz signal inside the demod 
>>> as fas as I understood, but then the LNBP21PD was supposed to generate it.
>>>
>>> Unfortunately this is not possible with the Pinnacle 400e. I took a look 
>>> at the LNBP21PD datasheet which states, that DSQIN is supposed to be 
>>> connected to GND if you don't want the 22kHz signal to be generated by 
>>> the LNBP21 itself. Guess what?! Pin 14(DSQIN) is connected to GND.
>>>
>>> For the time being I reverted your patch on my local system and the 
>>> Pinnacle 400e is working flawlessly again.
>>>
>>>   André
>>>
>>
>> Hi,
>>
>> we should try to get this sorted.
>>
>> With the prior state, working for Andre and others, it does not work on
>> the LifeView Trio (PCI and cardbus) and the saa7134 driver. Three guys I
>> think reported it and Hartmut did wait with the patch for long and
>> allowed about half a year for testing ...
>>
>> So, if we can't fix it soon, prior state of course counts and those
>> later will have to use the patches further. Such a "fix" can always be
>> committed prior to 2.6.25 release.
>>
>> Hermann
>>
>>
> So here is the patch that make the the 22kHz tone a config option.
> Please be aware that i have no means to test it, so please report
> 
> Signed-off-by: Hartmut Hackmann <hartmut.hackmann at t-online.de
> 
> 
> 
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