Re: [PATCH tty-next 1/2] dt-bindings: serial: ni,ni16650: add bindings

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On 29/03/2023 17:42, Brenda Streiff wrote:
> Add bindings for the NI 16550 UART.
> 
> Signed-off-by: Brenda Streiff <brenda.streiff@xxxxxx>
> Cc: Gratian Crisan <gratian.crisan@xxxxxx>
> Cc: Jason Smith <jason.smith@xxxxxx>
> ---
>  .../bindings/serial/ni,ni16550.yaml           | 53 +++++++++++++++++++
>  1 file changed, 53 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/serial/ni,ni16550.yaml
> 
> diff --git a/Documentation/devicetree/bindings/serial/ni,ni16550.yaml b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml
> new file mode 100644
> index 000000000000..4ac1c96726f8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml
> @@ -0,0 +1,53 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/serial/ni,ni16550.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NI 16550 asynchronous serial interface (UART)
> +
> +maintainers:
> +  - Brenda Streiff <brenda.streiff@xxxxxx>
> +
> +allOf:
> +  - $ref: serial.yaml#
> +
> +properties:
> +  compatible:
> +    items:

You have one item, so remove item.

> +      - enum:
> +          - ni,ni16550

As Rob pointed out - you did not test it at all.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clock-frequency: true
> +
> +  transceiver:

Missing description, type and maybe vendor prefix if this is not a
common property. Explain what's this.

> +    items:

Not a list.

> +      - enum:
> +          - RS-232
> +          - RS-485
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clock-frequency
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +      serial@80000000 {

Broken indentation.

Use 4 spaces for example indentation.

> +        compatible = "ni,ni16550", "ns16550a";
> +        reg = <0x80000000 0x8>;
> +        interrupts = <0 30 4>;
> +        clock-frequency = <58824000>;
> +        transceiver = "RS-485";
> +      };
> +
> +...

Best regards,
Krzysztof




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