* Actions Semi Owl SoCs DMA controller This binding follows the generic DMA bindings defined in dma.txt. Required properties: - compatible: Should be "actions,s900-dma". - reg: Should contain DMA registers location and length. - interrupts: Should contain 4 interrupts shared by all channel. - #dma-cells: Must be <1>. Used to represent the number of integer cells in the dmas property of client device. - dma-channels: Physical channels supported. - dma-requests: Number of DMA request signals supported by the controller. Refer to Documentation/devicetree/bindings/dma/dma.txt - clocks: Phandle and Specifier of the clock feeding the DMA controller. Example: Controller: dma: dma-controller@e0260000 { compatible = "actions,s900-dma"; reg = <0x0 0xe0260000 0x0 0x1000>; interrupts = , , , ; #dma-cells = <1>; dma-channels = <12>; dma-requests = <46>; clocks = <&clock CLK_DMAC>; }; Client: DMA clients connected to the Actions Semi Owl SoCs DMA controller must use the format described in the dma.txt file, using a two-cell specifier for each channel. The two cells in order are: 1. A phandle pointing to the DMA controller. 2. The channel id. uart5: serial@e012a000 { ... dma-names = "tx", "rx"; dmas = <&dma 26>, <&dma 27>; ... };