FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/sound/designware-i2s.txt

     DesignWare I2S controller
     
     Required properties:
      - compatible : Must be "snps,designware-i2s"
      - reg : Must contain the I2S core's registers location and length
      - clocks : Pairs of phandle and specifier referencing the controller's
        clocks. The controller expects one clock: the clock used as the sampling
        rate reference clock sample.
      - clock-names : "i2sclk" for the sample rate reference clock.
     - dmas: Pairs of phandle and specifier for the DMA channels that are used by
       the core. The core expects one or two dma channels: one for transmit and
       one for receive.
     - dma-names : "tx" for the transmit channel, "rx" for the receive channel.
    
    Optional properties:
     - interrupts: The interrupt line number for the I2S controller. Add this
       parameter if the I2S controller that you are using does not support DMA.
    
    For more details on the 'dma', 'dma-names', 'clock' and 'clock-names'
    properties please check:
            * resource-names.txt
            * clock/clock-bindings.txt
            * dma/dma.txt
    
    Example:
    
            soc_i2s: i2s@7ff90000 {
                    compatible = "snps,designware-i2s";
                    reg = <0x0 0x7ff90000 0x0 0x1000>;
                    clocks = <&scpi_i2sclk 0>;
                    clock-names = "i2sclk";
                    #sound-dai-cells = <0>;
                    dmas = <&dma0 5>;
                    dma-names = "tx";
            };

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