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

Jose Alberto Reguero jareguero at telefonica.net
Thu Mar 1 13:00:36 CET 2007


El Miércoles, 20 de Diciembre de 2006, Patrick Boettcher escribió:
> 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.
>

In the NOVA-T 500 the if1 offsets are the two last valid values of the epprom. 
The rest are filled with 0xff, except byte 127. This patch work for me.

Jose Alberto



-------------- next part --------------
A non-text attachment was scrubbed...
Name: 500.patch
Type: text/x-diff
Size: 1589 bytes
Desc: not available
Url : http://www.linuxtv.org/pipermail/linux-dvb/attachments/20070301/e12015f5/500.bin


More information about the linux-dvb mailing list