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| author | Maxime Ripard <maxime@cerno.tech> | 2020-06-28 20:08:04 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-07-16 10:10:30 +0200 |
| commit | 62a8ccf3a248cd222985ee5568b6bd6217282dbc (patch) | |
| tree | e7f04e76fbdfcf661d8df0d885a51580f8eecd25 /Documentation | |
| parent | ARM: dts sunxi: Relax a bit the CMA pool allocation range (diff) | |
| download | linux-62a8ccf3a248cd222985ee5568b6bd6217282dbc.tar.xz linux-62a8ccf3a248cd222985ee5568b6bd6217282dbc.zip | |
arm64: dts: allwinner: h6: Fix Cedrus IOMMU usage
Now that the IOMMU driver has been introduced, it prevents any access from
a DMA master going through it that hasn't properly mapped the pages, and
that link is set up through the iommus property.
Unfortunately we forgot to add that property to the video engine node when
adding the IOMMU node, so now any DMA access is broken.
Fixes: b3a0a2f910c7 ("arm64: dts: allwinner: h6: Add IOMMU")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200628180804.79026-1-maxime@cerno.tech
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml b/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml index 526593c8c614..4cc1a670c986 100644 --- a/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml +++ b/Documentation/devicetree/bindings/media/allwinner,sun4i-a10-video-engine.yaml @@ -47,6 +47,9 @@ properties: $ref: /schemas/types.yaml#/definitions/phandle-array description: Phandle to the device SRAM + iommus: + maxItems: 1 + memory-region: description: CMA pool to use for buffers allocation instead of the default |