On Mon, Dec 10, 2018 at 09:21:14AM +0000, Cosmin Samoila wrote:
> Document the bindings for MICFIL DAI.
>
> Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@xxxxxxx>
> ---
> .../devicetree/bindings/sound/fsl,micfil.txt | 38 ++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/fsl,micfil.txt
>
> diff --git a/Documentation/devicetree/bindings/sound/fsl,micfil.txt b/Documentation/devicetree/bindings/sound/fsl,micfil.txt
> new file mode 100644
> index 0000000..2aa4526
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/fsl,micfil.txt
> @@ -0,0 +1,38 @@
> +NXP MICFIL Digital Audio Interface (MICFIL).
> +
> +The MICFIL digital interface provides a 16-bit audio signal from a PDM
> +microphone bitstream in a configurable output sampling rate.
> +
> +Required properties:
> +
> + - compatible : Compatible list, contains "fsl,imx8mm-micfil"
> +
> + - reg : Offset and length of the register set for the device.
> +
> + - interrupts : Contains the micfil interrupts.
> +
> + - clocks : Must contain an entry for each entry in clock-names.
> +
> + - clock-names : Must include the "ipg_clk" for register access and
> + "ipg_clk_app" for internal micfil clock.
> +
> + - dmas : Generic dma devicetree binding as described in
> + Documentation/devicetree/bindings/dma/dma.txt.
> +
> + - dma-names : One "rx" dma must be configured.
You don't need -names when there is only one.
> +
> +Example:
> +micfil: micfil@30080000 {
> + compatible = "fsl,imx8mm-micfil";
> + reg = <0x0 0x30080000 0x0 0x10000>;
> + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&clk IMX8MM_CLK_PDM_IPG>,
> + <&clk IMX8MM_CLK_PDM_ROOT>;
> + clock-names = "ipg_clk", "ipg_clk_app";
> + dmas = <&sdma2 24 26 0x80000000>;
> + dma-names = "rx";
> + status = "disabled";
Don't show status in examples.
> +};
> --
> 2.7.4
>
