[v4,0/3] Add TDM audio on StarFive JH7110

This patchset adds TDM audio driver for the StarFive JH7110 SoC. The
first patch adds device tree binding for TDM module. The second patch
adds tdm driver support for JH7110 SoC. The last patch adds device tree
node and pins configuration of tdm to JH7110 dts.

The series has been tested on the VisionFive 2 board by plugging an
audio expansion board. 

For more information of audio expansion board, you can take a look
at the following webpage:
https://wiki.seeedstudio.com/ReSpeaker_2_Mics_Pi_HAT/

Changes since v3:
- Modified the subject of patch [1/3] to reflect which subsystem it is.
- Use the set of functions with 'clk_bulk_' to get/enable/disable clocks. 
- Dropped the overlay from patch [3/3].
- Dropped the redundant macro 'CONFIG_PM' and 'CONFIG_PM_SLEEP' around
  suspend() and resume().

Changes since v2:
- Use dt-overlay to describe sound card because need to plug the audio
  expansion board into the VisionFive2 board.
- Modified the coding style for driver.
- Moved assignment of stop_dma_first to startup function of dai_driver.
- Dropped some useless macro definition.
- Use loops to get/enable/disable clocks. 

Changes since v1:
- Rebased on Linux 6.3-rc4.
- Added the dts file dedicated to describe audio card.
- Added the item for JH7110 audio board to the dt-binding of StarFive
  SoC-based boards.

---
v3: https://lore.kernel.org/all/20230506090116.9206-1-walker.chen@starfivetech.com/
v2: https://lore.kernel.org/all/20230420024118.22677-1-walker.chen@starfivetech.com/
v1: https://lore.kernel.org/all/20230329153320.31390-1-walker.chen@starfivetech.com/

Walker Chen (3):
  ASoC: dt-bindings: Add TDM controller bindings for StarFive JH7110
  ASoC: starfive: Add JH7110 TDM driver
  riscv: dts: starfive: add the node and pins configuration for tdm

 .../bindings/sound/starfive,jh7110-tdm.yaml   |  98 ++++
 MAINTAINERS                                   |   6 +
 .../jh7110-starfive-visionfive-2.dtsi         |  40 ++
 arch/riscv/boot/dts/starfive/jh7110.dtsi      |  21 +
 sound/soc/Kconfig                             |   1 +
 sound/soc/Makefile                            |   1 +
 sound/soc/starfive/Kconfig                    |  15 +
 sound/soc/starfive/Makefile                   |   2 +
 sound/soc/starfive/jh7110_tdm.c               | 554 ++++++++++++++++++
 sound/soc/starfive/jh7110_tdm.h               | 138 +++++
 10 files changed, 876 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml
 create mode 100644 sound/soc/starfive/Kconfig
 create mode 100644 sound/soc/starfive/Makefile
 create mode 100644 sound/soc/starfive/jh7110_tdm.c
 create mode 100644 sound/soc/starfive/jh7110_tdm.h


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