1 * Rockchip I2S controller
3 The I2S bus (Inter-IC sound bus) is a serial link for digital
4 audio data transfer between devices in the system.
8 - compatible: should be one of the followings
9 - "rockchip,rk3066-i2s": for rk3066
10 - "rockchip,rk3188-i2s", "rockchip,rk3066-i2s": for rk3188
11 - "rockchip,rk3288-i2s", "rockchip,rk3066-i2s": for rk3288
12 - reg: physical base address of the controller and length of memory mapped
14 - interrupts: should contain the I2S interrupt.
15 - dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
16 Documentation/devicetree/bindings/dma/dma.txt
17 - dma-names: should include "tx" and "rx".
18 - clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
19 - clock-names: should contain followings:
20 - "i2s_hclk": clock for I2S BUS
21 - "i2s_clk" : clock for I2S controller
22 - rockchip,capture-channels: max capture channels, if not set, 2 channels default.
24 Example for rk3288 I2S controller:
27 compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
28 reg = <0xff890000 0x10000>;
29 interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
30 dmas = <&pdma1 0>, <&pdma1 1>;
31 dma-names = "tx", "rx";
32 clock-names = "i2s_hclk", "i2s_clk";
33 clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>;
34 rockchip,capture-channels = <2>;