[PATCH v2 0/2] ASoC: codecs: twl4030: external mute GPIO lookup fix and binding update

[Dmitry Torokhov]

This series fixes external mute GPIO lookup for the TWL4030 codec driver
and updates the corresponding device tree binding.

The twl4030-codec platform device created by the twl4030-audio MFD does
not have its own of_node or fwnode assigned, as its DT properties reside
in the "codec" child node of the parent MFD device. Consequently,
standard devm_gpiod_get_optional() calls on the codec device never
succeed. Fix this by looking up the GPIO descriptor directly from the
codec child firmware node. Also update the device tree binding to
document the standard "ti,hs_extmute-gpios" property name.

Note that to fully restore external mute GPIO lookup on existing device
trees that still use the legacy "ti,hs_extmute_gpio" property name (with
an underscore), the companion gpiolib OF quirk [1] is also needed at
runtime. There is no build-time dependency between the two changes, so
they can be merged independently via the ASoC and GPIO trees.

[1] https://lore.kernel.org/r/20261022-gpiolib-of-v3-3-42c3b6439fba@xxxxxxxxx

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
Changes in v2:
- Drop redundant $ref on ti,hs_extmute-gpios and add deprecated: true
  to ti,hs_extmute_gpio in DT binding schema.
- Link to v1: https://patch.msgid.link/20261022-twl4030-extmute-v1-0-3d2dbe260df9@xxxxxxxxx

---
Dmitry Torokhov (2):
      ASoC: codecs: twl4030: fix external mute GPIO lookup
      dt-bindings: mfd: twl4030-audio: document preferred name for external mute

 .../bindings/sound/ti,twl4030-audio.yaml           |   8 +-
 sound/soc/codecs/twl4030.c                         | 108 +++++++++++----------
 2 files changed, 62 insertions(+), 54 deletions(-)
---
base-commit: f1ac44c32cba88ad65dcecd4a279661d14e93651
change-id: 20261022-twl4030-extmute-59e516f0e056

Thanks.

-- 
Dmitry