1ADI AXI-I2S controller 2 3The core can be generated with transmit (playback), only receive 4(capture) or both directions enabled. 5 6Required properties: 7 - compatible : Must be "adi,axi-i2s-1.00.a" 8 - reg : Must contain I2S core's registers location and length 9 - clocks : Pairs of phandle and specifier referencing the controller's clocks. 10 The controller expects two clocks, the clock used for the AXI interface and 11 the clock used as the sampling rate reference clock sample. 12 - clock-names : "axi" for the clock to the AXI interface, "ref" for the sample 13 rate reference clock. 14 - dmas: Pairs of phandle and specifier for the DMA channels that are used by 15 the core. The core expects two dma channels if both transmit and receive are 16 enabled, one channel otherwise. 17 - dma-names : "tx" for the transmit channel, "rx" for the receive channel. 18 19For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties 20please check: 21 * resource-names.txt 22 * clock/clock-bindings.txt 23 * dma/dma.txt 24 25Example: 26 27 i2s: i2s@77600000 { 28 compatible = "adi,axi-i2s-1.00.a"; 29 reg = <0x77600000 0x1000>; 30 clocks = <&clk 15>, <&audio_clock>; 31 clock-names = "axi", "ref"; 32 dmas = <&ps7_dma 0>, <&ps7_dma 1>; 33 dma-names = "tx", "rx"; 34 }; 35