FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/dma/mtk-hsdma.txt

     MediaTek High-Speed DMA Controller
     ==================================
     
     This device follows the generic DMA bindings defined in dma/dma.txt.
     
     Required properties:
     
     - compatible:   Must be one of
                       "mediatek,mt7622-hsdma": for MT7622 SoC
                      "mediatek,mt7623-hsdma": for MT7623 SoC
    - reg:          Should contain the register's base address and length.
    - interrupts:   Should contain a reference to the interrupt used by this
                    device.
    - clocks:       Should be the clock specifiers corresponding to the entry in
                    clock-names property.
    - clock-names:  Should contain "hsdma" entries.
    - power-domains: Phandle to the power domain that the device is part of
    - #dma-cells:   The length of the DMA specifier, must be <1>. This one cell
                    in dmas property of a client device represents the channel
                    number.
    Example:
    
            hsdma: dma-controller@1b007000 {
                    compatible = "mediatek,mt7623-hsdma";
                    reg = <0 0x1b007000 0 0x1000>;
                    interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>;
                    clocks = <&ethsys CLK_ETHSYS_HSDMA>;
                    clock-names = "hsdma";
                    power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
                    #dma-cells = <1>;
            };
    
    DMA clients must use the format described in dma/dma.txt file.

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