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Commit f1c78d34 authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab
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[media] dib0700: fixup PLL config for PCTV 340e 



Based on a reference trace under Windows, reverse engineer the PLL config.
Note that the xtal is not yet setup, and the timf cannot be determined yet
because my reference trace doesn't actually achieve a signal lock.

Signed-off-by: default avatarDevin Heitmueller <dheitmueller@kernellabs.com>
Cc: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 799ed11a

drivers/media/dvb/dvb-usb/dib0700_devices.c

+41 −1
Original line number Diff line number Diff line
@@ -2735,13 +2735,53 @@ static struct dibx000_agc_config stk7700p_7000p_xc4000_agc_config = { 
	.perform_agc_softsplit = 0x00,

};



/* validation:

   reg 900 (0x0384) = 0x0e60

   reg 903 (0x0387) = 0x0027

   reg 18 (0x0012) = 0x0321

   reg 19 (0x0013) = 0x1620

   reg 21 (0x0015) = 0x0265

   reg 22 (0x0016) =  0x6cbd

   reg 23 (0x0017) = 0x0138

   reg 24 (0x0018) = 0x1381

   reg 72 (0x0048) = 0xd257

   internal = 52500

   sampling = never seems to be used?

   pll_prediv = 1

   pll_ratio = 7

   pll_range = 3

   pll_reset = 1

   pll_bypass = 0

   enable_refdiv = 0

   bypclk_div = 0

   IO_CLK_en_core = 1

   ADClkSrc = 1

   modulo = 0

   sad_cfg: = 0xd257

	    refsel = (3 << 14)

	    sel = (1 << 12)

	    freq_15k = (599 << 0)

   ifreq = 40201405

   timf = ? (need lock to compute)

   xtal_hz = ? (val dependent on exact tuning freq)

 */

static struct dibx000_bandwidth_config stk7700p_xc4000_pll_config = {

	52500, 30000, // internal, sampling

	1, 7, 3, 1, 0, // pll_cfg: prediv, ratio, range, reset, bypass

	0, 0, 1, 1, 0, // misc: refdiv, bypclk_div, IO_CLK_en_core, ADClkSrc, modulo

	(3 << 14) | (1 << 12) | (599 << 0), // sad_cfg: refsel, sel, freq_15k

	40201405, // ifreq

	20452225, // timf

	30000000, // xtal

};



/* FIXME: none of these inputs are validated yet */

static struct dib7000p_config pctv_340e_config = {

	.output_mpeg2_in_188_bytes = 1, // validated L3317: 0x00eb=0x0066



	.agc_config_count = 1,

	.agc = &stk7700p_7000p_xc4000_agc_config,

	.bw  = &stk7700p_pll_config,

	.bw  = &stk7700p_xc4000_pll_config,



	.gpio_dir = DIB7000M_GPIO_DEFAULT_DIRECTIONS,

	.gpio_val = DIB7000M_GPIO_DEFAULT_VALUES,