diff options
Diffstat (limited to 'sound/pci/ice1712/prodigy192.c')
| -rw-r--r-- | sound/pci/ice1712/prodigy192.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sound/pci/ice1712/prodigy192.c b/sound/pci/ice1712/prodigy192.c index ae08a079a41..f03c02c0774 100644 --- a/sound/pci/ice1712/prodigy192.c +++ b/sound/pci/ice1712/prodigy192.c @@ -26,6 +26,13 @@ * CCLK (pin 34) -- GPIO9 pin 76 * CSN (pin 35) -- GPIO8 pin 75 * - output data Mode 7 (24bit, I2S, slave) + * - both MCKO1 and MCKO2 of ak4114 are fed to FPGA, which + * outputs master clock to SPMCLKIN of ice1724. + * Experimentally I found out that only a combination of + * OCKS0=1, OCKS1=1 (128fs, 64fs output) and ice1724 - + * VT1724_MT_I2S_MCLK_128X=0 (256fs input) yields correct + * sampling rate. That means the the FPGA doubles the + * MCK01 rate. * * Copyright (c) 2003 Takashi Iwai <tiwai@suse.de> * Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca> @@ -714,7 +721,10 @@ static int prodigy192_ak4114_init(struct snd_ice1712 *ice) { static const unsigned char ak4114_init_vals[] = { AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1, - AK4114_DIF_I24I2S, /* ice1724 expects I2S and provides clock */ + /* ice1724 expects I2S and provides clock, + * DEM0 disables the deemphasis filter + */ + AK4114_DIF_I24I2S | AK4114_DEM0 , AK4114_TX1E, AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */ 0, |