ASoC: adau1372: fix invalid default state of output ASRC and DAC muxes

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The chip has strange power-on reset values for the registers that
control the output ASRC and DAC source muxes - the values are actually
marked "Reserved" in the datasheet [1]. This means that until the
underlying kcontrols are modified, the codec will not function as
expected.

The registers in question are:

  register / field       reset value       valid values

  ASRCO_SOURCE_0_1       0x10
   ASRC_OUT_SOURCE0      0                 4 .. 16
   ASRC_OUT_SOURCE1      1                 4 .. 16
  ASRCO_SOURCE_2_3       0x10
   ASRC_OUT_SOURCE2      2                 4 .. 16
   ASRC_OUT_SOURCE3      3                 4 .. 16
  DAC_SOURCE_0_1         0x10
   DAC_SOURCE_0          0                 12 .. 13
   DAC_SOURCE_1          1                 12 .. 13

Set some sane defaults during the driver probe:

  ADC Decimator0 -> Output ASRC0
  ADC Decimator1 -> Output ASRC1
  ADC Decimator2 -> Output ASRC2
  ADC Decimator3 -> Output ASRC3
  Input ASRC0 -> DAC0
  Input ASRC1 -> DAC1

With this, the chip will behave as advertised by the default kcontrol
state exposed by the driver.

[1] https://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1372.pdf

Fixes: 6cd4c6459e ("ASoC: Add ADAU1372 audio CODEC support")
Signed-off-by: Alvin Šipraga <alvin.sipraga@analog.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20261006-asoc-adau1372-fixes-v1-2-599cc17fb5f6@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Alvin Šipraga 2026-10-06 14:55:57 +02:00 • committed by Mark Brown

parent 64dd172bbf

commit 36d0e05815

1 changed files with 11 additions and 0 deletions

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sound/soc/codecs/adau1372.c

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