[PATCH v2 0/7] ASoC: Add Loongson-2K0300 I2S controller and sound card support

[Binbin Zhou <zhoubinbin@loongson.cn>]

Hi all:

This series adds ASoC support for the Loongson-2K0300 SoC and its
associated development boards, including the CTCISZ Forever Pi and the
ATK-DL2K0300B.

Key changes:
- Extend DT bindings to support ls2k0300-i2s and new audio card
  compatibles.
- Refactor the platform I2S driver to handle SoC differences via per-device
  configuration (rev_id, optional APB DMA config, reset sequence).
- Refactor the audio machine driver to support board-specific DAI formats,
  GPIO-based headphone detection/mute, speaker enable, and DAPM routing.
- Add jack detection and automatic switching between headphones and
  speakers for the DL2K0300B board.

The patchset also cleans up the existing audio card binding by
referencing the common sound-card properties, and adds new compatibles
for the Loongson-2K0300 variants with proper DAI format handling.

All changes have been tested on Loongson-2K2000 (PCI), Loongson-2K0300
Forever Pi and Loongson-2K0300 DL2K0300B boards.

Thanks.
Binbin

========
v2:
- The first four patches for V1 (related to code cleanup) have been
  accepted as a separate series. The link is as follows:
https://lore.kernel.org/all/178041371415.93058.4794135670349989571.b4-ty@b4/

Patch (1/7):
  - Add Reviewed-by tag from Krzysztof Kozlowski;
Patch (3/7):
  - New patch;
  - Reference sound-card-common.yaml, drop custom model property;
Patch (4/7)(5/7):
  - New patches;
  - Support Forever Pi board with different DAI format;
Patch (6/7)(7/7):
  - New patches;
  - Implement headphone jack detection and DAPM routing for ATK-DL2K0300B
    board.

Link to V1:
https://lore.kernel.org/all/cover.1773107475.git.zhoubinbin@loongson.cn/

Binbin Zhou (7):
  ASoC: dt-bindings: loongson,ls2k1000-i2s: Document Loongson-2K0300
    compatible
  ASoC: loongson: Add Loongson-2K0300 I2S controller support
  ASoC: dt-bindings: loongson,ls-audio-card: Use common sound card
  ASoC: dt-bindings: loongson,ls-audio-card: Add ctcisz forever pi
    compatible
  ASoC: loongson: Add Loongson-2K0300 CTCISZ Forever Pi sound card
    support
  ASoC: dt-bindings: loongson,ls-audio-card: Add ATK-DL2K0300B
    compatible
  ASoC: loongson: Add headphone jack detection and DAPM routing

 .../sound/loongson,ls-audio-card.yaml         |  52 +++++-
 .../bindings/sound/loongson,ls2k1000-i2s.yaml |  22 ++-
 sound/soc/loongson/loongson_card.c            | 163 +++++++++++++++++-
 sound/soc/loongson/loongson_i2s_plat.c        |  42 ++++-
 4 files changed, 256 insertions(+), 23 deletions(-)


base-commit: b2a71527074f5e4d273a25f6c89fb159172b2877
-- 
2.52.0