tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1* Allwinner A10 I2S controller
2
3The I2S bus (Inter-IC sound bus) is a serial link for digital
4audio data transfer between devices in the system.
5
6Required properties:
7
8- compatible: should be one of the following:
9 - "allwinner,sun4i-a10-i2s"
10 - "allwinner,sun6i-a31-i2s"
11 - "allwinner,sun8i-a83t-i2s"
12 - "allwinner,sun8i-h3-i2s"
13 - "allwinner,sun50i-a64-codec-i2s"
14- reg: physical base address of the controller and length of memory mapped
15 region.
16- interrupts: should contain the I2S interrupt.
17- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
18 Documentation/devicetree/bindings/dma/dma.txt
19- dma-names: should include "tx" and "rx".
20- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
21- clock-names: should contain the following:
22 - "apb" : clock for the I2S bus interface
23 - "mod" : module clock for the I2S controller
24- #sound-dai-cells : Must be equal to 0
25
26Required properties for the following compatibles:
27 - "allwinner,sun6i-a31-i2s"
28 - "allwinner,sun8i-a83t-i2s"
29 - "allwinner,sun8i-h3-i2s"
30 - "allwinner,sun50i-a64-codec-i2s"
31- resets: phandle to the reset line for this codec
32
33Example:
34
35i2s0: i2s@1c22400 {
36 #sound-dai-cells = <0>;
37 compatible = "allwinner,sun4i-a10-i2s";
38 reg = <0x01c22400 0x400>;
39 interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
40 clocks = <&apb0_gates 3>, <&i2s0_clk>;
41 clock-names = "apb", "mod";
42 dmas = <&dma SUN4I_DMA_NORMAL 3>,
43 <&dma SUN4I_DMA_NORMAL 3>;
44 dma-names = "rx", "tx";
45};