[PATCH RFC 0/2] Correctly use TX macro v9.4 for SC7280 / Kodiak

[Luca Weiss]

With the v9 data, that sc7280 is mistakenly using, the controls will
have completely wrong names and using wrong code paths that do not apply
to TX macro v9.4.

This is an RFC to get some feedback how to continue.

1. We update the "qcom,sc7280-lpass-tx-macro" compatible to 9.4, break
   unchanged dtbs (the sources are updated in this series) and break UCM
   until it's updated.

2. We add a new compatible "qcom,sc7280-lpass-tx-macro-fixed" - name is
   just a suggestion ;) - and make sure existing boards with audio keep
   using the old "broken" compatible. This should be completely
   backwards compatible, since we keep the existing compatible working
   as-is.

3. We add some dt flag "qcom,use-correct-tx-macro-version;" and handle
   the rest similar to option 2, by opting in boards to the updated
   behavior.

4. We keep everything the same. We know it's wrong, both the
   audio-routing in dtb and the controls in UCM have incorrect names,
   but it's working apparently.

Please let me know your thoughts.

As a bit of a note where I'm coming from, I'm working on microphone
bringup for qcm6490-fairphone-fp5 where so far we've been using
qcom,sm8450-lpass-tx-macro to get the correct control names. I've tried
reverting to sc7280-lpass-tx-macro, updating audio-routing in dts and
UCM to the v9.0 names and it does seem that microphone (AMIC1) is
working with that, but I'm not particularly happy about leaving the
wrong control names everywhere, so I'm happy to try and untangle this
situation.

I'm also not sure where this v9.x actually comes from, maybe I'm lacking
some documentation, downstream kernel only refers to Bolero v1.x and
v2.x so these seems to be a completely different versioning system.

Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
---
Luca Weiss (2):
      ASoC: codecs: lpass-tx-macro: Use correct config for sc7280
      arm64: dts: qcom: kodiak: Fix up LPASS TX macro v9.4 control names

 arch/arm64/boot/dts/qcom/qcm6490-idp.dts           |  2 +-
 .../boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts     |  2 +-
 arch/arm64/boot/dts/qcom/sc7280-crd-r3.dts         | 22 +++++++++++-----------
 .../dts/qcom/sc7280-herobrine-audio-wcd9385.dtsi   | 22 +++++++++++-----------
 .../dts/qcom/sc7280-herobrine-villager-r1.dtsi     | 22 +++++++++++-----------
 arch/arm64/boot/dts/qcom/sc7280-idp.dtsi           | 22 +++++++++++-----------
 sound/soc/codecs/lpass-tx-macro.c                  |  9 ++-------
 7 files changed, 48 insertions(+), 53 deletions(-)
---
base-commit: 550604d6c9b9efc8d068aff94dc301694a7afdee
change-id: 20260526-sc7280-tx-macro-1179d786af1f

Best regards,
--  
Luca Weiss <luca.weiss@xxxxxxxxxxxxx>