| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Hisilicon 6210 i2s controller |
| 2 | |
| 3 | Required 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 | |
| 25 | Example for the hi6210 i2s controller: |
| 26 | |
| 27 | i2s0: 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 | |
| 40 | Then when referencing the i2s controller: |
| 41 | sound-dai = <&i2s0 0>; /* index 0 => S2 interface */ |
| 42 | |