Re: [PATCH 1/2] dt-bindings: clk: Add binding for versal clocking wizard

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On Fri, Sep 30, 2022 at 3:04 AM Shubhrajyoti Datta
<shubhrajyoti.datta@xxxxxxx> wrote:
>
> The Clocking Wizard for Versal adaptive compute acceleration platforms
> generates multiple configurable number of clock outputs.
> Add device tree binding for Versal clocking wizard support.

Really v1? I'm sure I heard of this wizard before.

What about this?:

drivers/staging/clocking-wizard/dt-binding.txt

That needs to be moved out of staging rather than adding a 2nd one.

>
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxx>
> ---
>
>  .../bindings/clock/xlnx,clk-wizard.yaml       | 66 +++++++++++++++++++
>  1 file changed, 66 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/xlnx,clk-wizard.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.yaml b/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.yaml
> new file mode 100644
> index 000000000000..41a6f4bcaccd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/xlnx,clk-wizard.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx Versal clocking wizard
> +
> +maintainers:
> +  - Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxx>
> +
> +description:
> +  The clocking wizard is a soft ip clocking block of Xilinx versal. The IP
> +  uses the input clock frequencies and generates the requested
> +  clock output.
> +
> +properties:
> +  compatible:
> +    const: xlnx,clk-wizard-1.0

Where does 1.0 come from? A 1.0 always feels made up. This should be
based on some IP versioning that's documented somewhere.


> +
> +  reg:
> +    maxItems: 1
> +
> +  "#clock-cells":
> +    const: 1
> +
> +  clocks:
> +    description: List of clock specifiers which are external input
> +      clocks to the given clock controller.
> +    items:
> +      - description: functional clock input
> +      - description: axi clock or the interface clock
> +
> +  clock-names:
> +    items:
> +      - const: clk_in1
> +      - const: s_axi_aclk
> +
> +  xlnx,nr-outputs:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1
> +    maximum: 8
> +    description:
> +      Number of outputs.
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#clock-cells"
> +  - clocks
> +  - clock-names
> +  - xlnx,nr-outputs
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    clock-generator@40040000 {
> +        compatible = "xlnx,clk-wizard-1.0";
> +        reg = <0x40040000 0x1000>;
> +        #clock-cells = <1>;
> +        clocks = <&clkc 15>, <&clkc 15>;
> +        clock-names = "clk_in1", "s_axi_aclk";
> +        xlnx,nr-outputs = <6>;
> +    };
> +...
> --
> 2.17.1
>



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