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/37d2421c321762360a6982b3710...
$ 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: