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

Jun Guo
2025-11-17T01:59:50Z

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

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

.../devicetree/bindings/dma/arm,dma-350.yaml | 6 +-
arch/arm64/boot/dts/cix/sky1.dtsi | 7 ++
drivers/dma/arm-dma350.c | 115 ++++++++++++++++--
3 files changed, 117 insertions(+), 11 deletions(-)

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2.34.1