On 04/19/16 03:25, Rick Mann wrote: > Thanks for the suggestions, Peter, I really appreciate the help. Here's > what I get: > > [ 256.743991] davinci-mcasp 48038000.mcasp: Slots: 2, > max_active_serializers: 1, active_serializers: 0, channels: 2 > > I rebuilt the 4.4.7-bone-rt-r9 kernel using Robert C Nelson's bb-kernel > repo scripts. I modified sound/soc/davinci/davinci-mcasp.c to print some > diagnostics. Rebooted, then executed the following. Note that > BB-BONE-AUDI-02.dts is > <https://github.com/RobertCNelson/bb.org-overlays/blob/master/src/arm/BB-BONE-AUDI-02-00A0.dts>, > and the base DTB is <http://pastebin.com/5vVEdAKt>: Looks OK. FWIW: I have the following patch on top of linux-next to get the BBW's AudioCape RevA working: https://github.com/omap-audio/linux-audio/commit/37d2421c321762360a6982b37107b617b0f74bee > $ sudo su # echo BB-BONE-AUDI-02 > $SLOTS # aplay -l **** List of PLAYBACK > Hardware Devices **** card 0: B [AudioCape Rev B], device 0: > davinci-mcasp.0-tlv320aic3x-hifi tlv320aic3x-hifi-0 [] Subdevices: 1/1 > Subdevice #0: subdevice #0 # speaker-test > > speaker-test 1.0.28 > > Playback device is default Stream parameters are 48000Hz, S16_LE, 1 > channels Using 16 octaves of pink noise Rate set to 48000Hz (requested > 48000Hz) Buffer size range from 16 to 32768 Period size range from 8 to > 16384 Using max buffer size 32768 Periods = 4 Unable to set hw params for > playback: Invalid argument Setting of hwparams failed: Invalid argument > > speaker-test caused the following to be logged: > > [ 256.743991] davinci-mcasp 48038000.mcasp: Slots: 2, > max_active_serializers: 1, active_serializers: 0, channels: 2 Now this is odd... Can you print also the mcasp->num_serializer here? If it is 0, then something really strange is going on. We set this up in davinci_mcasp_set_pdata_from_of() when reading the serial-dir array. > [256.754343] davinci-mcasp 48038000.mcasp: ASoC: can't set 48038000.mcasp hw > params: -22 > > > Full logs: > > http://pastebin.com/HGhu9CPk > > > > -- Péter _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
