[PATCH v2 0/3] dmaengine: arm-dma350: add support for shared interrupt mode

Jun Guo
2025-12-16T12:30:33Z

The arm dma350 controller's hardware implementation varies: some
designs dedicate a separate interrupt line for each channel, while
others have all channels sharing a single interrupt.This patch adds
support for the hardware design where all DMA channels share a
single interrupt.

This series introduces the following enhancements for arm dma350
controller support on arm64 platforms:

Patch 1: Add a compatible string "cix,sky1-dma-350" for the cix
sky1 SoC.
Patch 2: Implement support for the shared interrupt design of the DMA
controller.
Patch 3: add DT nodes for DMA.

The patches have been tested on CIX SKY1 platform, the test steps are
as follows:
% echo 2000 > /sys/module/dmatest/parameters/timeout
% echo 1 > /sys/module/dmatest/parameters/iterations
% echo "" > /sys/module/dmatest/parameters/channel
% echo 1 > /sys/module/dmatest/parameters/run

Changes for v2:
- Update to kernel standards, enhance patch description, and refactor
driver to use match data for hardware differentiation instead of
compatible strings.

Jun Guo (3):
dt-bindings: dma: arm-dma350: update DT binding docs for cix sky1 SoC
dma: arm-dma350: add support for shared interrupt mode
arm64: dts: cix: add DT nodes for DMA

.../devicetree/bindings/dma/arm,dma-350.yaml | 31 +++--
arch/arm64/boot/dts/cix/sky1.dtsi | 7 +
drivers/dma/arm-dma350.c | 124 ++++++++++++++++--
3 files changed, 142 insertions(+), 20 deletions(-)

--
2.34.1