* Allwinner A10 I2S controller
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The I2S bus (Inter-IC sound bus) is a serial link for digital
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audio data transfer between devices in the system.
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Required properties:
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- compatible: should be one of the following:
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- "allwinner,sun4i-a10-i2s"
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- "allwinner,sun6i-a31-i2s"
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- "allwinner,sun8i-a83t-i2s"
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- "allwinner,sun8i-h3-i2s"
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: should contain the I2S interrupt.
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- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
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Documentation/devicetree/bindings/dma/dma.txt
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- dma-names: should include "tx" and "rx".
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- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
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- clock-names: should contain the following:
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- "apb" : clock for the I2S bus interface
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- "mod" : module clock for the I2S controller
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- #sound-dai-cells : Must be equal to 0
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Required properties for the following compatibles:
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- "allwinner,sun6i-a31-i2s"
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- "allwinner,sun8i-a83t-i2s"
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- "allwinner,sun8i-h3-i2s"
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- resets: phandle to the reset line for this codec
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Example:
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i2s0: i2s@1c22400 {
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#sound-dai-cells = <0>;
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compatible = "allwinner,sun4i-a10-i2s";
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reg = <0x01c22400 0x400>;
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interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&apb0_gates 3>, <&i2s0_clk>;
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clock-names = "apb", "mod";
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dmas = <&dma SUN4I_DMA_NORMAL 3>,
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<&dma SUN4I_DMA_NORMAL 3>;
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dma-names = "rx", "tx";
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};
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