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

Patrick Boettcher patrick.boettcher at desy.de
Wed Feb 6 15:12:55 CET 2008


Seeing all that, the fix is easy:

make the 22khz tone generation a field in the tda10086-config-struct and 
enable it for the 400e and disable it for other (default).

Patrick.

On Wed, 6 Feb 2008, hermann pitton wrote:

> 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
> 
> 
> 
> 
> 
> 
> 
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