On Sun, May 1, 2016 at 3:59 PM, Petr Kulhavy <brain@xxxxxxxx> wrote: > I have not tried setting the bit 20 of the GPR1 register. How would that be > set? If you have memtool installed in your rootfs: ./memtool -32 20E4004=0F560005 You can do this via bootloader prompt or via devmem2 in the Linux prompt. Without this MCLK will not be out. > > Both the 3.x and 4.1 work for me. However you need to set the headphone > volume to non-zero and especially the pcm output mixer (unmute), > otherwise the audio path is not routed through and the codec is switched off > due to power saving (and generates no bclk and lrclk). > This confused me as well, but after setting the mixer playback stasrts > working with the Freescale kernel. I was putting the volume to a suitable value, but didn't touch PCM output mixer. I see in alsamixer: "PCM Playback -6dB [Off]", but it does not allow me to change this setting though. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
