* Hisilicon 6210 i2s controller
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Required properties:
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- compatible: should be one of the following:
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- "hisilicon,hi6210-i2s"
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- reg: physical base address of the i2s controller unit and length of
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memory mapped region.
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- interrupts: should contain the i2s interrupt.
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- clocks: a list of phandle + clock-specifier pairs, one for each entry
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in clock-names.
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- clock-names: should contain following:
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- "dacodec"
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- "i2s-base"
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- dmas: DMA specifiers for tx dma. See the DMA client binding,
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Documentation/devicetree/bindings/dma/dma.txt
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- dma-names: should be "tx" and "rx"
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- hisilicon,sysctrl-syscon: phandle to sysctrl syscon
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- #sound-dai-cells: Should be set to 1 (for multi-dai)
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- The dai cell indexes reference the following interfaces:
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0: S2 interface
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(Currently that is the only one available, but more may be
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supported in the future)
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Example for the hi6210 i2s controller:
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i2s0: i2s@f7118000{
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compatible = "hisilicon,hi6210-i2s";
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reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit */
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interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; /* 155 "DigACodec_intr"-32 */
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clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,
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<&sys_ctrl HI6220_BBPPLL0_DIV>;
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clock-names = "dacodec", "i2s-base";
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dmas = <&dma0 15 &dma0 14>;
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dma-names = "rx", "tx";
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hisilicon,sysctrl-syscon = <&sys_ctrl>;
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#sound-dai-cells = <1>;
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};
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Then when referencing the i2s controller:
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sound-dai = <&i2s0 0>; /* index 0 => S2 interface */
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