1* Hisilicon 6210 i2s controller 2 3Required properties: 4 5- compatible: should be one of the following: 6 - "hisilicon,hi6210-i2s" 7- reg: physical base address of the i2s controller unit and length of 8 memory mapped region. 9- interrupts: should contain the i2s interrupt. 10- clocks: a list of phandle + clock-specifier pairs, one for each entry 11 in clock-names. 12- clock-names: should contain following: 13 - "dacodec" 14 - "i2s-base" 15- dmas: DMA specifiers for tx dma. See the DMA client binding, 16 Documentation/devicetree/bindings/dma/dma.txt 17- dma-names: should be "tx" and "rx" 18- hisilicon,sysctrl-syscon: phandle to sysctrl syscon 19- #sound-dai-cells: Should be set to 1 (for multi-dai) 20 - The dai cell indexes reference the following interfaces: 21 0: S2 interface 22 (Currently that is the only one available, but more may be 23 supported in the future) 24 25Example for the hi6210 i2s controller: 26 27i2s0: i2s@f7118000{ 28 compatible = "hisilicon,hi6210-i2s"; 29 reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit */ 30 interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; /* 155 "DigACodec_intr"-32 */ 31 clocks = <&sys_ctrl HI6220_DACODEC_PCLK>, 32 <&sys_ctrl HI6220_BBPPLL0_DIV>; 33 clock-names = "dacodec", "i2s-base"; 34 dmas = <&dma0 15 &dma0 14>; 35 dma-names = "rx", "tx"; 36 hisilicon,sysctrl-syscon = <&sys_ctrl>; 37 #sound-dai-cells = <1>; 38}; 39 40Then when referencing the i2s controller: 41 sound-dai = <&i2s0 0>; /* index 0 => S2 interface */ 42 43