diff options
Diffstat (limited to 'Documentation/devicetree/bindings/dma/fsl-imx-dma.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/fsl-imx-dma.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt index 7bd8847d6394..63010924d42a 100644 --- a/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt +++ b/Documentation/devicetree/bindings/dma/fsl-imx-dma.txt @@ -46,3 +46,18 @@ Example: dma-names = "rx-tx"; ... }; + +* DMA capability limitation + +Specify the DMA capability limitations. +For example, some SoCs only support up to 32bit DMA capability, although +they are 64bit SoCs. + +- only-dma-mask32: 1 means that the SoCs only suppot up to 32bit DMA + capability. + +Example: + dma_cap: dma_cap { + compatible = "dma-capability"; + only-dma-mask32 = <1>; + }; |