1DesignWare I2S controller 2 3Required properties: 4 - compatible : Must be "snps,designware-i2s" 5 - reg : Must contain the I2S core's registers location and length 6 - clocks : Pairs of phandle and specifier referencing the controller's 7 clocks. The controller expects one clock: the clock used as the sampling 8 rate reference clock sample. 9 - clock-names : "i2sclk" for the sample rate reference clock. 10 - dmas: Pairs of phandle and specifier for the DMA channels that are used by 11 the core. The core expects one or two dma channels: one for transmit and 12 one for receive. 13 - dma-names : "tx" for the transmit channel, "rx" for the receive channel. 14 15Optional properties: 16 - interrupts: The interrupt line number for the I2S controller. Add this 17 parameter if the I2S controller that you are using does not support DMA. 18 19For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' 20properties please check: 21 * resource-names.txt 22 * clock/clock-bindings.txt 23 * dma/dma.txt 24 25Example: 26 27 soc_i2s: i2s@7ff90000 { 28 compatible = "snps,designware-i2s"; 29 reg = <0x0 0x7ff90000 0x0 0x1000>; 30 clocks = <&scpi_i2sclk 0>; 31 clock-names = "i2sclk"; 32 #sound-dai-cells = <0>; 33 dmas = <&dma0 5>; 34 dma-names = "tx"; 35 }; 36