On Thu, 16 Apr 2009 23:35:20 +0200 ext Troy Kisky <troy.kisky@xxxxxxxxxxxxxxxxxxx> wrote: > Arun KS wrote: > > But when I2S is used there is no audio on Right channel(left channel > > is working fine). > > Thinks something is missing on tlv320aic23 driver. > > > This sounds like the same problem Davinci has. From a comment in > davinci-i2s.c > > case SND_SOC_DAIFMT_I2S: > /* Davinci doesn't support TRUE I2S, but some codecs will have > * the left and right channels contiguous. This allows > * dsp_a mode to be used with an inverted normal frame clk. > * If your codec is master and does not have contiguous > * channels, then you will have sound on only one channel. > * Try using a different mode, or codec as slave. > * > * The TLV320AIC33 is an example of a codec where this works. > * It has a variable bit clock frequency allowing it to have > * valid data on every bit clock. > * > * The TLV320AIC23 is an example of a codec where this does > not > * work. It has a fixed bit clock frequency with progressively > * more empty bit clock slots between channels as the sample > * rate is lowered. > */ Interesting codec. Arun, how is the right channel working with I2S if you try to run with higher rate? E.g. aplay -r [48000 | 96000] /dev/urandom The I2S mode setup in tlv320aic23_set_dai_fmt looks correct. Jarkko _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
