On Wed, Jun 01, 2016 at 07:54:27PM +0200, Maxime Ripard wrote:
> Introduce the device tree binding for the I2S controller found in the
> Allwinner A10 and later SoCs.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/sound/sun4i-i2s.txt | 33 ++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/sun4i-i2s.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
> new file mode 100644
> index 000000000000..365ca4eede5f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
> @@ -0,0 +1,33 @@
> +* Allwinner A10 I2S controller
> +
> +The I2S bus (Inter-IC sound bus) is a serial link for digital
> +audio data transfer between devices in the system.
> +
> +Required properties:
> +
> +- compatible: should be one of the followings
> + - "allwinner,sun4i-a10-i2s"
> +- reg: physical base address of the controller and length of memory mapped
> + region.
> +- interrupts: should contain the I2S interrupt.
> +- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
> + Documentation/devicetree/bindings/dma/dma.txt
> +- dma-names: should include "tx" and "rx".
> +- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
> +- clock-names: should contain followings:
> + - "apb" : clock for the I2S bus interface
> + - "mod" : module clock for the I2S controller
> +
> +Example:
> +
> +i2s0: i2s@01c22400 {
> + #sound-dai-cells = <0>;
This is missing from the property list.
> + compatible = "allwinner,sun4i-a10-i2s";
> + reg = <0x01c22400 0x400>;
> + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&apb0_gates 3>, <&i2s0_clk>;
> + clock-names = "apb", "mod";
> + dmas = <&dma SUN4I_DMA_NORMAL 3>,
> + <&dma SUN4I_DMA_NORMAL 3>;
> + dma-names = "rx", "tx";
> +};
> --
> 2.8.3
>
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