Patrick Ziegler wrote: > I have some trouble with stereo audio through the atmal ssc interface > based on at91-ssc.c. (Merged into atmel_ssc_dai.c since about one year ago.) > Unfortunately left and right channels were swapped periodically. > > In my environment the codec supplies the BLCK and LRC clocks and > the SSC is configured to transmit one sample on both edges of the LRC clock. > But I guess the audio frames will always start with a frame of the left channel > while the LRC clock is in an undefined state. Indeed. > How does normally the audio driver detect when a left and when a right channel > frame should be send and with which it should start ? The driver cannot do anything about this; the hardware must be told to start transmitting at the falling edge. If possible. Is there a reason why the codec supplies LRC? Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
