xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/dma/mtk-uart-apdma.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun* Mediatek UART APDMA Controller
2*4882a593Smuzhiyun
3*4882a593SmuzhiyunRequired properties:
4*4882a593Smuzhiyun- compatible should contain:
5*4882a593Smuzhiyun  * "mediatek,mt2712-uart-dma" for MT2712 compatible APDMA
6*4882a593Smuzhiyun  * "mediatek,mt6577-uart-dma" for MT6577 and all of the above
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun- reg: The base address of the APDMA register bank.
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun- interrupts: A single interrupt specifier.
11*4882a593Smuzhiyun One interrupt per dma-requests, or 8 if no dma-requests property is present
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun- dma-requests: The number of DMA channels
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun- clocks : Must contain an entry for each entry in clock-names.
16*4882a593Smuzhiyun  See ../clocks/clock-bindings.txt for details.
17*4882a593Smuzhiyun- clock-names: The APDMA clock for register accesses
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun- mediatek,dma-33bits: Present if the DMA requires support
20*4882a593Smuzhiyun
21*4882a593SmuzhiyunExamples:
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun	apdma: dma-controller@11000400 {
24*4882a593Smuzhiyun		compatible = "mediatek,mt2712-uart-dma",
25*4882a593Smuzhiyun			     "mediatek,mt6577-uart-dma";
26*4882a593Smuzhiyun		reg = <0 0x11000400 0 0x80>,
27*4882a593Smuzhiyun		      <0 0x11000480 0 0x80>,
28*4882a593Smuzhiyun		      <0 0x11000500 0 0x80>,
29*4882a593Smuzhiyun		      <0 0x11000580 0 0x80>,
30*4882a593Smuzhiyun		      <0 0x11000600 0 0x80>,
31*4882a593Smuzhiyun		      <0 0x11000680 0 0x80>,
32*4882a593Smuzhiyun		      <0 0x11000700 0 0x80>,
33*4882a593Smuzhiyun		      <0 0x11000780 0 0x80>,
34*4882a593Smuzhiyun		      <0 0x11000800 0 0x80>,
35*4882a593Smuzhiyun		      <0 0x11000880 0 0x80>,
36*4882a593Smuzhiyun		      <0 0x11000900 0 0x80>,
37*4882a593Smuzhiyun		      <0 0x11000980 0 0x80>;
38*4882a593Smuzhiyun		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_LOW>,
39*4882a593Smuzhiyun			     <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>,
40*4882a593Smuzhiyun			     <GIC_SPI 105 IRQ_TYPE_LEVEL_LOW>,
41*4882a593Smuzhiyun			     <GIC_SPI 106 IRQ_TYPE_LEVEL_LOW>,
42*4882a593Smuzhiyun			     <GIC_SPI 107 IRQ_TYPE_LEVEL_LOW>,
43*4882a593Smuzhiyun			     <GIC_SPI 108 IRQ_TYPE_LEVEL_LOW>,
44*4882a593Smuzhiyun			     <GIC_SPI 109 IRQ_TYPE_LEVEL_LOW>,
45*4882a593Smuzhiyun			     <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>,
46*4882a593Smuzhiyun			     <GIC_SPI 111 IRQ_TYPE_LEVEL_LOW>,
47*4882a593Smuzhiyun			     <GIC_SPI 112 IRQ_TYPE_LEVEL_LOW>,
48*4882a593Smuzhiyun			     <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>,
49*4882a593Smuzhiyun			     <GIC_SPI 114 IRQ_TYPE_LEVEL_LOW>;
50*4882a593Smuzhiyun		dma-requests = <12>;
51*4882a593Smuzhiyun		clocks = <&pericfg CLK_PERI_AP_DMA>;
52*4882a593Smuzhiyun		clock-names = "apdma";
53*4882a593Smuzhiyun		mediatek,dma-33bits;
54*4882a593Smuzhiyun		#dma-cells = <1>;
55*4882a593Smuzhiyun	};
56