Troubleshooting • Re: Cannot make Pi DAC+ work with Raspberry Zero 2W

Code:

[    8.878003] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.[    8.914490] mc: Linux media interface: v0.10[    9.089237] videodev: Linux video capture interface: v2.00[    9.160511] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.[    9.205937] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.[    9.214435] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.[    9.218379] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.[    9.248358] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13[    9.256019] bcm2835-codec bcm2835-codec: Device registered as /dev/video10[    9.266608] bcm2835-codec bcm2835-codec: Loaded V4L2 decode[    9.267550] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14[    9.306058] bcm2835-codec bcm2835-codec: Device registered as /dev/video11[    9.306127] bcm2835-codec bcm2835-codec: Loaded V4L2 encode[    9.345531] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15[    9.347619] bcm2835-codec bcm2835-codec: Device registered as /dev/video12[    9.347689] bcm2835-codec bcm2835-codec: Loaded V4L2 isp[    9.352302] Bluetooth: Core ver 2.22[    9.352484] NET: Registered PF_BLUETOOTH protocol family[    9.352495] Bluetooth: HCI device and connection manager initialized[    9.352528] Bluetooth: HCI socket layer initialized[    9.352544] Bluetooth: L2CAP socket layer initialized[    9.352575] Bluetooth: SCO socket layer initialized[    9.353656] bcm2835-codec bcm2835-codec: Device registered as /dev/video18[    9.353723] bcm2835-codec bcm2835-codec: Loaded V4L2 image_fx[    9.354582] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16[    9.354636] bcm2835-isp bcm2835-isp: Register output node 0 with media controller[    9.354658] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller[    9.354676] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller[    9.354692] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller[    9.367308] bcm2835-codec bcm2835-codec: Device registered as /dev/video31[    9.367386] bcm2835-codec bcm2835-codec: Loaded V4L2 encode_image[    9.386030] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video20[    9.387362] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video21[    9.392555] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video22[    9.393195] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video23[    9.393244] bcm2835-isp bcm2835-isp: Register output node 0 with media controller[    9.353723] bcm2835-codec bcm2835-codec: Loaded V4L2 image_fx[    9.354582] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16                                    [    9.354636] bcm2835-isp bcm2835-isp: Register output node 0 with media controller[    9.354658] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller[    9.354676] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller[    9.354692] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller[    9.367308] bcm2835-codec bcm2835-codec: Device registered as /dev/video31[    9.367386] bcm2835-codec bcm2835-codec: Loaded V4L2 encode_image[    9.386030] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video20[    9.387362] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video21[    9.392555] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video22[    9.393195] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video23[    9.393244] bcm2835-isp bcm2835-isp: Register output node 0 with media controller[    9.393266] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller[    9.393284] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller[    9.393300] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller[    9.393596] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp[    9.476027] Bluetooth: HCI UART driver ver 2.3[    9.512301] Bluetooth: HCI UART protocol H4 registered[    9.515555] Bluetooth: HCI UART protocol Three-wire (H5) registered[    9.515980] Bluetooth: HCI UART protocol Broadcom registered[    9.520879] hci_uart_bcm serial0-0: supply vbat not found, using dummy regulator[    9.521244] hci_uart_bcm serial0-0: supply vddio not found, using dummy regulator[    9.528169] pcm512x 1-004c: Failed to reset device: -121[    9.533992] pcm512x: probe of 1-004c failed with error -121[    9.562455] cfg80211: Loading compiled-in X.509 certificates for regulatory database[    9.619071] Loaded X.509 cert 'benh@debian.org: 577e021cb980e0e820821ba7b54b4961b8b4fadf'[    9.631646] Loaded X.509 cert 'romain.perier@gmail.com: 3abbc6ec146e09d1b6016ab9d6cf71dd233f0328'[    9.634356] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'                                                            [    9.635954] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'                                          [    9.640458] uart-pl011 3f201000.serial: no DMA platform data                                                            [    9.888320] Bluetooth: hci0: BCM: chip id 94[    9.888751] Bluetooth: hci0: BCM: features 0x2e[    9.892364] Bluetooth: hci0: BCM43430A1[    9.892410] Bluetooth: hci0: BCM43430A1 (001.002.009) build 0000[    9.922996] Bluetooth: hci0: BCM43430A1 'brcm/BCM43430A1.raspberrypi,model-zero-2-w.hcd' Patch[    9.932821] alsactl[313]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set[    9.984049] brcmfmac: F1 signature read @0x18000000=0x1541a9a6                                                        [    9.991618] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1 

Code:

[    9.849537] pcm512x 1-004c: Failed to reset device: -121[    9.850228] pcm512x: probe of 1-004c failed with error -121