Allwinner R40 contains DMA engine similar to that in A64. Following two patches enable it so DMA users can be added later. Please take a look. Best regards, Jernej Jernej Skrabec (2): dt-bindings: dma: allwinner,sun50i-a64-dma: Add R40 compatible ARM: dts: sun8i: r40: Add DMA node .../bindings/dma/allwinner,sun50i-a64-dma.yaml | 9 ++++++--- arch/arm/boot/dts/sun8i-r40.dtsi | 12 ++++++++++++ 2 files changed, 18 insertions(+), 3 deletions(-) -- 2.28.0