[linux-dvb] frequency out of range - Problems

Michael Krufky mkrufky at linuxtv.org
Mon Aug 6 18:25:40 CEST 2007


Oliver Endriss wrote:
> According to the crippled datasheet, a symbol rate from 12..30 MSym/s
> should be correct for the TDA8083.
>
> The Grundig 29504-451 tuner uses the TDA8060 down-converter, which has a
> frequency range from 920..2200MHz.
>
> So the attached patch should fix the range issues. Ok?
>   
Oliver,

I don't think any discussion is required for this change at all.  Please
push it in when you can.

Regards,

Mike
> diff -r 8f9147c3bacd linux/drivers/media/dvb/frontends/tda8083.c
> --- a/linux/drivers/media/dvb/frontends/tda8083.c	Wed Aug 01 12:14:44 2007 -0300
> +++ b/linux/drivers/media/dvb/frontends/tda8083.c	Mon Aug 06 18:06:09 2007 +0200
> @@ -443,12 +443,12 @@ static struct dvb_frontend_ops tda8083_o
>  	.info = {
>  		.name			= "Philips TDA8083 DVB-S",
>  		.type			= FE_QPSK,
> -		.frequency_min		= 950000,     /* FIXME: guessed! */
> -		.frequency_max		= 1400000,    /* FIXME: guessed! */
> +		.frequency_min		= 920000,     /* TDA8060 */
> +		.frequency_max		= 2200000,    /* TDA8060 */
>  		.frequency_stepsize	= 125,   /* kHz for QPSK frontends */
>  	/*      .frequency_tolerance	= ???,*/
> -		.symbol_rate_min	= 1000000,   /* FIXME: guessed! */
> -		.symbol_rate_max	= 45000000,  /* FIXME: guessed! */
> +		.symbol_rate_min	= 12000000,
> +		.symbol_rate_max	= 30000000,
>  	/*      .symbol_rate_tolerance	= ???,*/
>  		.caps = FE_CAN_INVERSION_AUTO |
>  			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
>   




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