0001 MOXA ART DMA Controller
0002
0003 See dma.txt first
0004
0005 Required properties:
0006
0007 - compatible : Must be "moxa,moxart-dma"
0008 - reg : Should contain registers location and length
0009 - interrupts : Should contain an interrupt-specifier for the sole
0010 interrupt generated by the device
0011 - #dma-cells : Should be 1, a single cell holding a line request number
0012
0013 Example:
0014
0015 dma: dma@90500000 {
0016 compatible = "moxa,moxart-dma";
0017 reg = <0x90500080 0x40>;
0018 interrupts = <24 0>;
0019 #dma-cells = <1>;
0020 };
0021
0022
0023 Clients:
0024
0025 DMA clients connected to the MOXA ART DMA controller must use the format
0026 described in the dma.txt file, using a two-cell specifier for each channel:
0027 a phandle plus one integer cells.
0028 The two cells in order are:
0029
0030 1. A phandle pointing to the DMA controller.
0031 2. Peripheral identifier for the hardware handshaking interface.
0032
0033 Example:
0034 Use specific request line passing from dma
0035 For example, MMC request line is 5
0036
0037 mmc: mmc@98e00000 {
0038 compatible = "moxa,moxart-mmc";
0039 reg = <0x98e00000 0x5C>;
0040 interrupts = <5 0>;
0041 clocks = <&clk_apb>;
0042 dmas = <&dma 5>,
0043 <&dma 5>;
0044 dma-names = "tx", "rx";
0045 };
