From 55b3318b3a49488a14ccfceffde668d548c4e427 Mon Sep 17 00:00:00 2001 From: Zoran Turalija Date: Sun, 2 Jun 2013 14:56:33 -0300 Subject: [PATCH] [media] stb0899: allow minimum symbol rate of 2000000 Looks like product datasheets for tuners containing STB0899 are suggesting specification for min. symbol rate of 2MS/s. Some specs found here, all suggesting 2MS/s for min. symbol rate: Comtech DVBS2-6899 http://comtech.sg1002.myweb.hinet.net/pdf/dvbs2-6899.pdf TechniSat SkyStar HD2 http://www.scaistar.com/skystar2/skystarhd2.htm Azurewave AD-SP400 http://www.pulsat.com/products/AzureWave-AD%252dSP400-High-Definition-PC-Card.html New patch: This makes minimum symbol rate driver capabilities on par with some accessible datasheet specifications*, and allows tuning on linux to transponders that have symbol rate between 2000000-5000000, too. Patch was tested successfully on Eutelsat 16A transponders that became reachable with it (2000000 < symbol rate < 5000000): * DVB/S 12507050 V 2532000 3/4 * DVB/S2 12574000 V 4355000 3/4 8PSK * DVB/S 12593000 V 2500000 2/3 * DVB/S 12596940 V 2848000 2/3 * DVB/S 12600750 V 2500000 1/2 * DVB/S 12675590 H 4248000 3/4 (*) Datasheet: http://comtech.sg1002.myweb.hinet.net/pdf/dvbs2-6899.pdf Maximum Symbol Rate QPSK/LDPC/PCH: 20-30Mbps 8PSK/LDPC/BCH: 10-30Mbps DVB: 2-45Mbps ^--------- min. symbol rate Signed-off-by: Zoran Turalija Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/stb0899_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/dvb-frontends/stb0899_drv.c b/drivers/media/dvb-frontends/stb0899_drv.c index 527f5c3e0be9..b3ccd3dbbda1 100644 --- a/drivers/media/dvb-frontends/stb0899_drv.c +++ b/drivers/media/dvb-frontends/stb0899_drv.c @@ -1581,7 +1581,7 @@ static struct dvb_frontend_ops stb0899_ops = { .frequency_max = 2150000, .frequency_stepsize = 0, .frequency_tolerance = 0, - .symbol_rate_min = 1000000, + .symbol_rate_min = 2000000, .symbol_rate_max = 45000000, .caps = FE_CAN_INVERSION_AUTO | -- 2.30.2