mmc: sdhci-of-arasan: Add the support for sdhci-5.1
[linux/fpc-iii.git] / Documentation / devicetree / bindings / sound / rockchip-i2s.txt
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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.
6 Required properties:
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
13   region.
14 - interrupts: should contain the I2S interrupt.
15 - #address-cells: should be 1.
16 - #size-cells: should be 0.
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 followings:
22    - "i2s_hclk": clock for I2S BUS
23    - "i2s_clk" : clock for I2S controller
25 Example for rk3288 I2S controller:
27 i2s@ff890000 {
28         compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
29         reg = <0xff890000 0x10000>;
30         interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
31         #address-cells = <1>;
32         #size-cells = <0>;
33         dmas = <&pdma1 0>, <&pdma1 1>;
34         dma-names = "tx", "rx";
35         clock-names = "i2s_hclk", "i2s_clk";
36         clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>;