[PATCH v1 0/5] dmaengine: arm-dma350: Add slave support and CIX Sky1 integration

[Jelly Jia <Jelly.Jia@cixtech.com>]

Hello,

This series adds slave transfer support to the Arm DMA-350 driver and
the CIX Sky1 SoC integration around it.

Patch 1 fixes the CH_CTRL_USESRCTRIGIN definition: the source trigger
enable bit is bit 25, not bit 26 (which is the destination trigger
enable bit).

Patch 2 adds slave transfer support to the Arm DMA-350 driver:
scatter-gather and cyclic preparation, command-list allocation,
per-channel resource mapping including address translation through the
parent bus dma-ranges, and residue reporting. Slave transfers are
needed to serve peripheral requests, for example the audio FIFOs of
the CIX Sky1 audio subsystem.

Patch 3 documents the CIX Sky1 DMA-350 integration binding: a wrapper
node owning the SoC resources (clocks, resets, interrupt routing via
a syscon phandle, optional reserved memory) with the generic Arm
DMA-350 controller as its child.

Patch 4 adds the matching integration driver, which manages those
resources and populates the child controller.

Patch 5 adds the two Sky1 instances (FCH and AUDSS) to the SoC
devicetree.

The series is based on v7.3-rc1.

Testing:
- Built for arm64 with GCC 12.3 as both built-in and module, with no
  new warnings; sparse clean.
- checkpatch clean; dt_binding_check and dtbs_check pass for the new
  binding and nodes.
- Runtime-tested on CIX Sky1 boards with the FCH and AUDSS DMA-350
  instances.

Signed-off-by: Jelly Jia <Jelly.Jia@cixtech.com>

Jelly Jia (5):
  dmaengine: arm-dma350: Fix source trigger bit
  dmaengine: arm-dma350: Add slave transfer support
  dt-bindings: dma: Add CIX Sky1 DMA-350 integration
  dmaengine: cix-sky1-dma350: Add Sky1 integration driver
  arm64: dts: cix: Add Sky1 DMA-350 nodes

 .../bindings/dma/cix,sky1-dma350.yaml         | 102 +++
 MAINTAINERS                                   |   2 +
 arch/arm64/boot/dts/cix/sky1.dtsi             |  61 +-
 drivers/dma/Kconfig                           |  15 +
 drivers/dma/Makefile                          |   1 +
 drivers/dma/arm-dma350.c                      | 642 +++++++++++++++++-
 drivers/dma/cix-sky1-dma350.c                 | 206 ++++++
 7 files changed, 993 insertions(+), 36 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml
 create mode 100644 drivers/dma/cix-sky1-dma350.c


base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
-- 
2.54.0