It turns out that Cedrus on H6 actually uses two IOMMU channels. Manual mentiones two IOMMU channels, but it doesn't specify which is used when. Page faults were also observed from both. This series updates binding to allow up to two IOMMU channels and fixes H6 DTSI. Please take a look. Best regards, Jernej Jernej Skrabec (2): media: dt-bindings: allwinner: video-engine: Fix number of IOMMU channels arm64: dts: allwinner: h6: Fix Cedrus IOMMU channels .../bindings/media/allwinner,sun4i-a10-video-engine.yaml | 2 +- arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) -- 2.38.1