The cx231xx USB bridge has issue streaming QAM256 DVB-C channels. QAM64 channels were fine, but QAM256 channels produced corrupted transport streams.
cx231xx alt mode 4 does not provide enough bandwidth to acommodate QAM256 DVB-C channels, most likely DVB-T2 channels would break up as well. Alt mode 5 increases bridge bandwidth to 90Mbps, and fixes QAM256 DVB-C streaming. Signed-off-by: Brad Love <[email protected]> --- drivers/media/usb/cx231xx/cx231xx-dvb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/cx231xx/cx231xx-dvb.c b/drivers/media/usb/cx231xx/cx231xx-dvb.c index 7130294..67ed667 100644 --- a/drivers/media/usb/cx231xx/cx231xx-dvb.c +++ b/drivers/media/usb/cx231xx/cx231xx-dvb.c @@ -276,7 +276,7 @@ static int start_streaming(struct cx231xx_dvb *dvb) if (dev->USE_ISO) { dev_dbg(dev->dev, "DVB transfer mode is ISO.\n"); - cx231xx_set_alt_setting(dev, INDEX_TS1, 4); + cx231xx_set_alt_setting(dev, INDEX_TS1, 5); rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE); if (rc < 0) return rc; -- 2.7.4
