Documentation/devicetree/bindings/sound/zte,zx-i2s.txt

   1 ZTE ZX296702 I2S controller
   2
   3 Required properties:
   4  - compatible : Must be "zte,zx296702-i2s"
   5  - reg : Must contain I2S core's registers location and length
   6  - clocks : Pairs of phandle and specifier referencing the controller's clocks.
   7  - clock-names: "tx" for the clock to the I2S interface.
   8  - dmas: Pairs of phandle and specifier for the DMA channel that is used by
   9    the core. The core expects two dma channels for transmit.
  10  - dma-names : Must be "tx" and "rx"
  11
  12 For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties
  13 please check:
  14         * resource-names.txt
  15         * clock/clock-bindings.txt
  16         * dma/dma.txt
  17
  18 Example:
  19         i2s0: i2s0@0b005000 {
  20                 #sound-dai-cells = <0>;
  21                 compatible = "zte,zx296702-i2s";
  22                 reg = <0x0b005000 0x1000>;
  23                 clocks = <&lsp0clk ZX296702_I2S0_DIV>;
  24                 clock-names = "tx";
  25                 interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
  26                 dmas = <&dma 5>, <&dma 6>;
  27                 dma-names = "tx", "rx";
  28                 status = "okay";
  29         };
  30
  31         sound {
  32                 compatible = "simple-audio-card";
  33                 simple-audio-card,name = "zx296702_snd";
  34                 simple-audio-card,format = "left_j";
  35                 simple-audio-card,bitclock-master = <&sndcodec>;
  36                 simple-audio-card,frame-master = <&sndcodec>;
  37                 sndcpu: simple-audio-card,cpu {
  38                         sound-dai = <&i2s0>;
  39                 };
  40
  41                 sndcodec: simple-audio-card,codec {
  42                         sound-dai = <&acodec>;
  43                 };
  44         };