Re: [PATCH 4/4] dt-bindings: hv: Add dt-bindings for VMBus

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On 16/01/2023 17:48, Saurabh Sengar wrote:
> Add dt-bindings for Hyper-V VMBus

Missing full stop.

Subject: drop second/last, redundant "dt-bindings for". The
"dt-bindings" prefix is already stating that these are bindings.

> 
> Signed-off-by: Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/hv/msft,vmbus.yaml         | 34 ++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hv/msft,vmbus.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hv/msft,vmbus.yaml b/Documentation/devicetree/bindings/hv/msft,vmbus.yaml
> new file mode 100644
> index 0000000..66cb426
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hv/msft,vmbus.yaml
> @@ -0,0 +1,34 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/hv/msft,vmbus.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microsoft Hyper-V VMBus device tree bindings

Drop "device tree bindings"

> +
> +maintainers:
> +  - Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx>
> +
> +description:
> +  VMBus is a software bus that implement the protocols for communication
> +  between the root or host OS and guest OSs (virtual machines).

Why this cannot be auto-discoverable? Why do you need OF for this?

> +
> +properties:
> +  compatible:
> +    const: msft,vmbus
> +
> +  ranges :
> +    const: <0x00 0x00 0x0f 0xf0000000 0x10000000>

Did you test the bindings?

This property does not look correct. If you have static addresses, you
do not need OF. What do you want to discover here?

> +
> +required:
> +  - compatible
> +  - ranges
> +
> +examples:
> +  - |
> +        vmbus {

Use 4 spaces for example indentation.

> +		#address-cells = <0x02>;
> +		#size-cells = <0x01>;

That's not correct style. Drop hex notation. Drop leading zeros.

But anyway you did not test the bindings. This cannot work. Try.

> +		compatible = "msft,vmbus";

compatible is a first property.

> +		ranges = <0x00 0x00 0x0f 0xf0000000 0x10000000>;

What do you translate? There is no reg, no unit address.

> +	};

Best regards,
Krzysztof




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