xref: /freebsd/sys/contrib/device-tree/Bindings/dma/mtk-hsdma.txt (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229) 
1MediaTek High-Speed DMA Controller
2==================================
3
4This device follows the generic DMA bindings defined in dma/dma.txt.
5
6Required properties:
7
8- compatible:	Must be one of
9		  "mediatek,mt7622-hsdma": for MT7622 SoC
10		  "mediatek,mt7623-hsdma": for MT7623 SoC
11- reg:		Should contain the register's base address and length.
12- interrupts:	Should contain a reference to the interrupt used by this
13		device.
14- clocks:	Should be the clock specifiers corresponding to the entry in
15		clock-names property.
16- clock-names:	Should contain "hsdma" entries.
17- power-domains: Phandle to the power domain that the device is part of
18- #dma-cells: 	The length of the DMA specifier, must be <1>. This one cell
19		in dmas property of a client device represents the channel
20		number.
21Example:
22
23        hsdma: dma-controller@1b007000 {
24		compatible = "mediatek,mt7623-hsdma";
25		reg = <0 0x1b007000 0 0x1000>;
26		interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>;
27		clocks = <&ethsys CLK_ETHSYS_HSDMA>;
28		clock-names = "hsdma";
29		power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
30		#dma-cells = <1>;
31	};
32
33DMA clients must use the format described in dma/dma.txt file.
34