hifiberry / module snd_soc_hifiberry_dacplus broken in kernel 5.4.18

fichtennadel · February 17, 2020 at 9:02 PM

Hi,

running on Raspi3, hifiberry can't be loaded in kernel 5.4.18, it fails with snd-rpi-hifiberry-dacplus soc:sound: ASoC: failed to init link HiFiBerry DAC+: -517

Code

##############################################
#                 LibreELEC                  #
#            https://libreelec.tv            #
##############################################

LibreELEC (Milhouse): devel-20200216210416-#0216-gd1fdc57 (RPi2.arm)

raspiLibreELEC:~ # aplay -l
aplay: device_list:272: no soundcards found...
raspiLibreELEC:~ # uname -a
Linux raspiLibreELEC 5.4.18 #1 SMP Sun Feb 16 21:05:03 GMT 2020 armv7l GNU/Linux
raspiLibreELEC:~ # lsmod
Module                  Size  Used by
hidp                   28672  0
aes_arm_bs             24576  4
crypto_simd            16384  1 aes_arm_bs
cryptd                 20480  3 crypto_simd
hci_uart               45056  1
btbcm                  16384  1 hci_uart
serdev                 20480  1 hci_uart
bluetooth             442368  24 hidp,hci_uart,btbcm
ecdh_generic           16384  2 bluetooth
ecc                    36864  1 ecdh_generic
8021q                  28672  0
bcm2835_codec          32768  0
snd_soc_pcm512x_i2c    16384  0
videobuf2_dma_contig    24576  1 bcm2835_codec
videobuf2_memops       20480  1 videobuf2_dma_contig
brcmfmac              274432  0
brcmutil               20480  1 brcmfmac
snd_soc_pcm512x        32768  1 snd_soc_pcm512x_i2c
snd_soc_hifiberry_dacplus    16384  0
v4l2_mem2mem           20480  1 bcm2835_codec
videobuf2_v4l2         24576  2 bcm2835_codec,v4l2_mem2mem
cfg80211              561152  1 brcmfmac
videobuf2_common       45056  3 bcm2835_codec,v4l2_mem2mem,videobuf2_v4l2
rfkill                 24576  4 bluetooth,cfg80211
bcm2835_gpiomem        16384  0
videodev              180224  4 bcm2835_codec,videobuf2_common,v4l2_mem2mem,videobuf2_v4l2
i2c_bcm2835            16384  0
snd_soc_bcm2835_i2s    20480  0
mc                     45056  5 bcm2835_codec,videobuf2_common,videodev,v4l2_mem2mem,videobuf2_v4l2
fixed                  20480  0
wireguard             135168  0
ip6_udp_tunnel         16384  1 wireguard
udp_tunnel             16384  1 wireguard
raspiLibreELEC:~ # dmesg|grep hifiberry
[    7.185696] snd-rpi-hifiberry-dacplus soc:sound: ASoC: failed to init link HiFiBerry DAC+: -517
[    7.409770] snd-rpi-hifiberry-dacplus soc:sound: ASoC: failed to init link HiFiBerry DAC+: -517
[    7.419868] snd-rpi-hifiberry-dacplus soc:sound: ASoC: failed to init link HiFiBerry DAC+: -517
[    7.546983] Modules linked in: snd_soc_pcm512x_i2c(+) videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
[    7.548495] Modules linked in: snd_soc_pcm512x_i2c(+) videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
[    7.552649] Modules linked in: snd_soc_pcm512x_i2c(+) videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
[    7.712001] snd-rpi-hifiberry-dacplus soc:sound: ASoC: failed to init link HiFiBerry DAC+: -517
[    7.720195] Modules linked in: bcm2835_codec(C) snd_soc_pcm512x_i2c videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
[    7.720637] Modules linked in: bcm2835_codec(C) snd_soc_pcm512x_i2c videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
[    7.721015] Modules linked in: bcm2835_codec(C) snd_soc_pcm512x_i2c videobuf2_dma_contig videobuf2_memops brcmfmac brcmutil snd_soc_pcm512x snd_soc_hifiberry_dacplus v4l2_mem2mem videobuf2_v4l2 cfg80211 videobuf2_common rfkill bcm2835_gpiomem videodev i2c_bcm2835 snd_soc_bcm2835_i2s mc fixed wireguard(O) ip6_udp_tunnel udp_tunnel
raspiLibreELEC:~ #

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Full dmesg output see dmesg.txt.

It's not an hardware issue, hifiberry is fine when booting a different image/sd card (see hifiberry_ok.txt for log excerpts).

fichtennadel · February 19, 2020 at 8:59 PM

ok, so I narrowed it down, last working kernel was 5.4.11:

Code

##############################################
#                 LibreELEC                  #
#            https://libreelec.tv            #
##############################################

LibreELEC (Milhouse): devel-20200116210332-#0116-ge0fe762 (RPi2.arm)
raspiLibreELEC:~ # uname -a
Linux raspiLibreELEC 5.4.11 #3 SMP Thu Jan 16 21:04:07 GMT 2020 armv7l GNU/Linux
raspiLibreELEC:~ # aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ HiFi pcm512x-hifi-0 [HiFiBerry DAC+ HiFi pcm512x-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

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**Da Flex** · February 20, 2020 at 12:56 AM Official Post

Do you use the right config.txt option?

fichtennadel · February 20, 2020 at 7:28 AM

yes, dtoverlay=hifiberry-dacplus

It's all on the same hardware and config.txt: using Kodi's upgrade function I've been booting millhouse build #0116 , which is ok but #0117 not. Up- and downgrade and vice versa reproduces the problem.

See also my post #763 over at LibreELEC Testbuilds for RaspberryPi (Kodi 19.0)

**Da Flex** · February 20, 2020 at 3:11 PM Official Post

Development builds usually have bugs. You can use a stable built.

fichtennadel · February 20, 2020 at 4:21 PM

Quote from Da Flex

Development builds usually have bugs. You can use a stable built.

Sure, and that's what I'm already doing.

This forum is named "Bug Reports", and that's what I did: report a bug.

**Da Flex** · February 20, 2020 at 5:16 PM Official Post

Quote from fichtennadel

This forum is named "Bug Reports", and that's what I did: report a bug.

It's not against the rules to post it here, but personally I would call it a development discussion, which has an own sub-forum.

fichtennadel · February 20, 2020 at 8:31 PM

Quote from Da Flex

It's not against the rules to post it here, but personally I would call it a development discussion, which has an own sub-forum.

Nope. Copy&Paste from the forum descriptions:

Development > General help for development and building with LibreELEC

Bug Reports > If you found a bug and can provide a technical description of it, post a report here

I'm not searching for workarounds, I'm not developing or building LibreELEC, I report a bug.

And now lets please stop the meta-discussion and focus on topic

**HiassofT** · February 20, 2020 at 11:46 PM

Bug reports, especially with detailed info, are always welcome.

For issues in milhouse builds it's best to post in his threads on the kodi forum so everything's in one place.

The dmesg output helped me track down a bug lingering in the pcm512x driver for a long time, I've sent a fix upstream and it's already scheduled for inclusion in the next 5.6 kernel (and will then find it's way into earlier kernels)

ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path - Patchwork

As posted in the milhouse thread I suspect the actual error is with the clock driver of the Hifiberry card (which Hifiberry folks need to look into, I don't have the hardware here to test myself) which then triggered the bug in the pcm512x driver.

so long,

Hias

fichtennadel · February 28, 2020 at 3:33 PM

fixed, see LibreELEC Testbuilds for RaspberryPi (Kodi 19.0)