Commit | Line | Data |
---|---|---|
38c81719 MR |
1 | * Allwinner A10 I2S controller |
2 | ||
3 | The I2S bus (Inter-IC sound bus) is a serial link for digital | |
4 | audio data transfer between devices in the system. | |
5 | ||
6 | Required properties: | |
7 | ||
8 | - compatible: should be one of the followings | |
9 | - "allwinner,sun4i-a10-i2s" | |
10 | - reg: physical base address of the controller and length of memory mapped | |
11 | region. | |
12 | - interrupts: should contain the I2S interrupt. | |
13 | - dmas: DMA specifiers for tx and rx dma. See the DMA client binding, | |
14 | Documentation/devicetree/bindings/dma/dma.txt | |
15 | - dma-names: should include "tx" and "rx". | |
16 | - clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names. | |
17 | - clock-names: should contain followings: | |
18 | - "apb" : clock for the I2S bus interface | |
19 | - "mod" : module clock for the I2S controller | |
20 | - #sound-dai-cells : Must be equal to 0 | |
21 | ||
22 | Example: | |
23 | ||
24 | i2s0: i2s@01c22400 { | |
25 | #sound-dai-cells = <0>; | |
26 | compatible = "allwinner,sun4i-a10-i2s"; | |
27 | reg = <0x01c22400 0x400>; | |
28 | interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; | |
29 | clocks = <&apb0_gates 3>, <&i2s0_clk>; | |
30 | clock-names = "apb", "mod"; | |
31 | dmas = <&dma SUN4I_DMA_NORMAL 3>, | |
32 | <&dma SUN4I_DMA_NORMAL 3>; | |
33 | dma-names = "rx", "tx"; | |
34 | }; |