I have the same issue. I am running kernel debian with kernel 4.4.52-bone16 I pulled down RobertCNelson's dtb-rebuilder from https://github.com/RobertCNelson/dtb-rebuilder <https://github.com/RobertCNelson/dtb-rebuilder/blob/4.1-ti/src/arm/am335x-boneblack-audio.dts#L17-L28>, branch 4.4.x and rebuilt all the arm dtbs and installed them. Then added then updated my *base* dtb, which is am335x-boneblack-emmc-overlay.dtb with the clock definitions in am335x-boneblack-audio.dts, as per https://github.com/RobertCNelson/dtb-rebuilder/blob/4.1-ti/src/arm/am335x-boneblack-audio.dts#L17-L28 <https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2FRobertCNelson%2Fdtb-rebuilder%2Fblob%2F4.1-ti%2Fsrc%2Farm%2Fam335x-boneblack-audio.dts%23L17-L28&sa=D&sntz=1&usg=AFQjCNHdxge1SQz3V8cG2II6UbZ9j0nDDw>
Reboot, then install the audio: sudo sh -c "echo BB-BONE-AUDI-02 > /sys/devices/platform/bone_capemgr/slots" All seems ok in dmesg: [ 411.768801] bone_capemgr bone_capemgr: part_number 'BB-BONE-AUDI-02', version 'N/A' [ 411.768866] bone_capemgr bone_capemgr: slot #4: override [ 411.774250] bone_capemgr bone_capemgr: Using override eeprom data at slot 4 [ 411.774295] bone_capemgr bone_capemgr: slot #4: 'Override Board Name,00A0,Override Manuf,BB-BONE-AUDI-02' [ 411.811080] bone_capemgr bone_capemgr: slot #4: dtbo 'BB-BONE-AUDI-02-00A0.dtbo' loaded; overlay id #0 but speaker-test and aplay both fail with: [ 2632.788052] davinci-mcasp 48038000.mcasp: stream has more channels (2) than are enabled in mcasp (0) [ 2632.788110] davinci-mcasp 48038000.mcasp: ASoC: can't set 48038000.mcasp hw params: -22 On Wednesday, July 19, 2017 at 12:21:09 PM UTC-4, engka...@gmail.com wrote: > > This might be an old thread but I got a question. I was able to compile > and load the modified device tree. I then loaded my overlay for the audio. > I built this circuit base from http://elinux.org/CircuitCo:Audio_Cape_RevB. > The only difference with mine is that I am using I2C1. I can see the it is > using address 0x18 dmesg has: > [ 135.176315] asoc-simple-card sound: tlv320aic3x-hifi <-> 48038000.mcasp > mapping ok > > However, when I call on the speaker-test, this error appears: > > > Unable to set hw params for playback: Invalid argument > Setting of hwparams failed: Invalid argument > > Checking dmesg: > [ 617.051387] davinci-mcasp 48038000.mcasp: stream has more channels (2) > than are enabled in mcasp (0) > [ 617.051781] davinci-mcasp 48038000.mcasp: ASoC: can't set > 48038000.mcasp hw params: -22 > > Has anyone encountered the same problem? > > > > > On Monday, April 4, 2016 at 5:48:01 PM UTC+8, Rick M wrote: >> >> I'm trying to get my audio cape to work (which is nearly identical to the >> cape that was available for sale). I've had it working to some level of >> success with past kernels (3.1.18), but now I'm on 4.4.6. My existing DTS >> didn't work, so I'm looking at how the BB-BONE-AUDI-02 DTS is written. >> >> One of the differences is that it doesn't explicitly call out the McASP >> clock frequency like the older one did. Instead, it seems to refer to >> clk_mcasp0. But when I copy the same code into my DTS, I get: >> >> [ 103.180866] of_resolve_phandles: Could not find symbol 'clk_mcasp0' >> [ 103.187269] bone_capemgr bone_capemgr: slot #4: Failed to resolve tree >> >> I found it defined by grepping /boot/dtbs. It's in >> /boot/dtbs/4.4.6-bone-rt-r6/am335x-abbbi.dtb. Where can I find the source >> files for these DTBs? >> >> Is this dtb part of what's loaded by default in 4.4.6-bone-rt-r6? If not, >> can I copy the definition into my >> >> FWIW, here's my DTS and some output from dmesg: >> http://pastebin.com/niDkWdWV >> >> Thanks, >> >> >> -- >> Rick Mann >> rm...@latencyzero.com >> >> >> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/6bf53a99-ed73-4fd4-a379-d5f4f27aae93%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
