* Spreadtrum DMA controller This binding follows the generic DMA bindings defined in dma.txt. Required properties: - compatible: Should be "sprd,sc9860-dma". - reg: Should contain DMA registers location and length. - interrupts: Should contain one interrupt 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 : Number of DMA channels supported. Should be 32. - clock-names: Should contain the clock of the DMA controller. - clocks: Should contain a clock specifier for each entry in clock-names. Example: Controller: apdma: dma-controller@20100000 { compatible = "sprd,sc9860-dma"; reg = <0x20100000 0x4000>; interrupts = ; #dma-cells = <1>; #dma-channels = <32>; clock-names = "enable"; clocks = <&clk_ap_ahb_gates 5>; }; Client: DMA clients connected to the Spreadtrum 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. spi0: spi@70a00000{ ... dma-names = "rx_chn", "tx_chn"; dmas = <&apdma 11>, <&apdma 12>; ... };