On Wed, Jul 26, 2017 at 01:47:43PM -0700, Harsha Priya wrote: > This patch fixes the cracking noise in rt5663 headphones for kabylake platform > by calling the rt5663_sel_asrc_clk_src() for RT5663_AD_STEREO_FILTER as well. and it sets ASRC..? > > The ASRC function is for asynchronous MCLK and LRCK. For RT5663 ASRC should be > enabled to support special i2s clock format like Intel's 100fs. ASRC function ^^^^ double space > will track i2s clock and generate a corresponding system clock for codec. > Calling this function helps select the clock source for both > RT5663_AD_STEREO_FILTER and RT5663_DA_STEREO_FILTER filters which fixes the > crackling sound. > > Signed-off-by: Harsha Priya <harshapriya.n@xxxxxxxxx> > --- > sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c > index 3fe4a08..cfde894 100644 > --- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c > +++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c > @@ -319,7 +319,9 @@ static int kabylake_rt5663_hw_params(struct snd_pcm_substream *substream, > int ret; > > /* use ASRC for internal clocks, as PLL rate isn't multiple of BCLK */ > - rt5663_sel_asrc_clk_src(codec_dai->codec, RT5663_DA_STEREO_FILTER, 1); > + rt5663_sel_asrc_clk_src(codec_dai->codec, > + RT5663_DA_STEREO_FILTER | RT5663_AD_STEREO_FILTER, > + RT5663_CLK_SEL_I2S1_ASRC); > > ret = snd_soc_dai_set_sysclk(codec_dai, > RT5663_SCLK_S_MCLK, 24576000, SND_SOC_CLOCK_IN); > -- > 1.9.1 > -- ~Vinod _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
