Kernel-4.18.0-80.el8_hisilicon,hi6210-i2s

• Hisilicon 6210 i2s controller

Required properties:

• compatible: should be one of the following:
  • “hisilicon,hi6210-i2s”
• reg: physical base address of the i2s controller unit and length of
  memory mapped region.
• interrupts: should contain the i2s interrupt.
• clocks: a list of phandle + clock-specifier pairs, one for each entry
  in clock-names.
• clock-names: should contain following:
  • “dacodec”
  • “i2s-base”
• dmas: DMA specifiers for tx dma. See the DMA client binding,
  Documentation/devicetree/bindings/dma/dma.txt
• dma-names: should be “tx” and “rx”
• hisilicon,sysctrl-syscon: phandle to sysctrl syscon
• #sound-dai-cells: Should be set to 1 (for multi-dai)
  • The dai cell indexes reference the following interfaces:
    0: S2 interface
    (Currently that is the only one available, but more may be
    supported in the future)

Example for the hi6210 i2s controller:

i2s0: i2s@f7118000{
compatible = “hisilicon,hi6210-i2s”;
reg = <0x0 0xf7118000 0x0 0x8000>; /* i2s unit /
interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; / 155 “DigACodec_intr”-32 */
clocks = <&sys_ctrl HI6220_DACODEC_PCLK>,
<&sys_ctrl HI6220_BBPPLL0_DIV>;
clock-names = “dacodec”, “i2s-base”;
dmas = <&dma0 15 &dma0 14>;
dma-names = “rx”, “tx”;
hisilicon,sysctrl-syscon = <&sys_ctrl>;
#sound-dai-cells = <1>;
};

Then when referencing the i2s controller:
sound-dai = <&i2s0 0>; /* index 0 => S2 interface */