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 15For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' 16properties please check: 17 * resource-names.txt 18 * clock/clock-bindings.txt 19 * dma/dma.txt 20 21Example: 22 23 soc_i2s: i2s@7ff90000 { 24 compatible = "snps,designware-i2s"; 25 reg = <0x0 0x7ff90000 0x0 0x1000>; 26 clocks = <&scpi_i2sclk 0>; 27 clock-names = "i2sclk"; 28 #sound-dai-cells = <0>; 29 dmas = <&dma0 5>; 30 dma-names = "tx"; 31 }; 32