[linux-dvb] Re: [PATCH] Tuner calibration for some Nova-T devices

Patrick Boettcher patrick.boettcher at desy.de
Wed Dec 20 13:08:34 CET 2006


Hi Olivier,

On Fri, 15 Dec 2006, treza at chez.com wrote:
> Here is a patch for Hauppage Nova-T-Stick and Nova-T-500 users.
> It sets the MT2060 IF1 frequency according to the
> calibration values stored in the EEPROM.
> 
> It is supposed to enhance the signal quality, but, hey,
> there is no guarantee.
> Feedbacks would be much appreciated, to know whether it
> deserves being applied.
> 
> For those who have a MT2060 based device, very low signal
> levels and feel _very_ lucky, 
> they can also activate MT2060_SPURCHECK in the mt2060_priv.h
> file. At worst case it will change nothing.
> 
> Patrick, the (dib0700_state.mt2060_if1 field in dib0700.h
> becomes useless with this patch, is it right or shall I move
> the code to the "frontend_attach" functions ?)
> 
> Signed-off-by: Olivier DANET <odanet at caramail.com>

Thank you very much for taking a look at that.

I inserted the mt2060_if1-field in the state, because I thought about 
adding a complete eeprom-parser...

I'm wondering also if the eeprom-address for the if1-offset is always the 
same for each design. How did you find 0x48 and 0x49? Normally the 
addresses are dynamic, depending on the strings before (afaik).

Furthermore the bristol-card has two mt2060-if1-offsets - one for each 
path.

The best would be, but it will take some time, to write the eeprom-parser 
to always find the correct offset....

Would you have the time to do have a look at that?

thanks again,
Patrick.



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