On Sun, Mar 01, 2020 at 01:24:18PM +0800, Shengjiu Wang wrote:
> EASRC (Enhanced Asynchronous Sample Rate Converter) is a new
> IP module found on i.MX8MN.
>
> Signed-off-by: Shengjiu Wang
> ---
> .../devicetree/bindings/sound/fsl,easrc.yaml | 96 +++
> 1 file changed, 96 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/fsl,easrc.yaml
>
> diff --git a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
> b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
> new file mode 100644
> index ..500af8f0c8f0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml
> @@ -0,0 +1,96 @@
> +# SPDX-License-Identifier: GPL-2.0
Dual license new bindings:
(GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/fsl,easrc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP Asynchronous Sample Rate Converter (ASRC) Controller
> +
> +maintainers:
> + - Shengjiu Wang
> +
> +properties:
> + $nodename:
> +pattern: "^easrc@.*"
> +
> + compatible:
> +oneOf:
> + - items:
You can drop oneOf and items here.
> +- enum:
> + - fsl,imx8mn-easrc
Blank line between properties please.
> + reg:
> +maxItems: 1
> +
> + interrupts:
> +maxItems: 1
> +
> + clocks:
> +items:
> + - description: Peripheral clock
> +
> + clock-names:
> +items:
> + - const: mem
> +
> + dmas:
> +maxItems: 8
> +
> + dma-names:
> +oneOf:
Drop oneOf as there is only one.
> + - items:
> + - const: ctx0_rx
> + - const: ctx0_tx
> + - const: ctx1_rx
> + - const: ctx1_tx
> + - const: ctx2_rx
> + - const: ctx2_tx
> + - const: ctx3_rx
> + - const: ctx3_tx
> +
> + fsl,easrc-ram-script-name:
> +$ref: /schemas/types.yaml#/definitions/string
> +description: The coefficient table for the filters
Need to define the exact string(s).
> +
> + fsl,asrc-rate:
> +$ref: /schemas/types.yaml#/definitions/uint32
> +description: Defines a mutual sample rate used by DPCM Back Ends
Constraints?
> +
> + fsl,asrc-format:
> +$ref: /schemas/types.yaml#/definitions/uint32
> +description: Defines a mutual sample format used by DPCM Back Ends
Constraints?
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - dmas
> + - dma-name
dma-names
> + - fsl,easrc-ram-script-name
> + - fsl,asrc-rate
> + - fsl,asrc-format
> +
> +examples:
> + - |
> +#include
> +
> +easrc: easrc@300C {
> + compatible = "fsl,imx8mn-easrc";
> + reg = <0x0 0x300C 0x0 0x1>;
> + interrupts = <0x0 122 0x4>;
> + clocks = < IMX8MN_CLK_ASRC_ROOT>;
> + clock-names = "mem";
> + dmas = < 16 23 0> , < 17 23 0>,
> + < 18 23 0> , < 19 23 0>,
> + < 20 23 0> , < 21 23 0>,
> + < 22 23 0> , < 23 23 0>;
> + dma-names = "ctx0_rx", "ctx0_tx",
> + "ctx1_rx", "ctx1_tx",
> + "ctx2_rx", "ctx2_tx",
> + "ctx3_rx", "ctx3_tx";
> + fsl,easrc-ram-script-name = "imx/easrc/easrc-imx8mn.bin";
> + fsl,asrc-rate = <8000>;
> + fsl,asrc-format = <2>;
> + status = "disabled";
Don't show status in examples.
> +};
> --
> 2.21.0
>
