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1MOXA ART DMA Controller2 3See dma.txt first4 5Required properties:6 7- compatible : Must be "moxa,moxart-dma"8- reg : Should contain registers location and length9- interrupts : Should contain an interrupt-specifier for the sole10 interrupt generated by the device11- #dma-cells : Should be 1, a single cell holding a line request number12 13Example:14 15 dma: dma@90500000 {16 compatible = "moxa,moxart-dma";17 reg = <0x90500080 0x40>;18 interrupts = <24 0>;19 #dma-cells = <1>;20 };21 22 23Clients:24 25DMA clients connected to the MOXA ART DMA controller must use the format26described in the dma.txt file, using a two-cell specifier for each channel:27a phandle plus one integer cells.28The two cells in order are:29 301. A phandle pointing to the DMA controller.312. Peripheral identifier for the hardware handshaking interface.32 33Example:34Use specific request line passing from dma35For example, MMC request line is 536 37 mmc: mmc@98e00000 {38 compatible = "moxa,moxart-mmc";39 reg = <0x98e00000 0x5C>;40 interrupts = <5 0>;41 clocks = <&clk_apb>;42 dmas = <&dma 5>,43 <&dma 5>;44 dma-names = "tx", "rx";45 };46