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Message-ID: <feb8eaeb-954c-416d-6e30-acb4b92764e0@linaro.org>
Date:   Sun, 10 Sep 2023 12:55:12 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        corbet@....net, steen.hegelund@...rochip.com,
        rdunlap@...radead.org, horms@...nel.org, casper.casan@...il.com,
        andrew@...n.ch
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        horatiu.vultur@...rochip.com, Woojung.Huh@...rochip.com,
        Nicolas.Ferre@...rochip.com, UNGLinuxDriver@...rochip.com,
        Thorsten.Kummermehr@...rochip.com
Subject: Re: [RFC PATCH net-next 6/6] microchip: lan865x: add device-tree
 support for Microchip's LAN865X MACPHY

On 08/09/2023 16:29, Parthiban Veerasooran wrote:
> Add device-tree support for Microchip's LAN865X MACPHY for configuring
> the OPEN Alliance 10BASE-T1x MACPHY Serial Interface parameters.

Please use subject prefixes matching the subsystem. You can get them for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching.

> 
> Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
> ---
>  .../bindings/net/microchip,lan865x.yaml       | 54 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/microchip,lan865x.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/microchip,lan865x.yaml b/Documentation/devicetree/bindings/net/microchip,lan865x.yaml
> new file mode 100644
> index 000000000000..3465b2c97690
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/microchip,lan865x.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/microchip,lan865x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip LAN8650/1 10BASE-T1S MACPHY Ethernet Controllers
> +
> +maintainers:
> +  - Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>
> +
> +description: |
> +  Device tree properties for LAN8650/1 10BASE-T1S MACPHY Ethernet

Drop "Device tree properties for" and instead describe the hardware.

> +  controller.
> +
> +allOf:
> +  - $ref: ethernet-controller.yaml#
> +
> +properties:
> +  compatible:
> +    items:

No need for items. Just enum.


> +      - enum:
> +          - microchip,lan865x

No wildcards in compatibles.

Missing blank line.



> +  reg:
> +    maxItems: 1
> +
> +  local-mac-address: true
> +  oa-chunk-size: true
> +  oa-tx-cut-through: true
> +  oa-rx-cut-through: true
> +  oa-protected: true

What are all these? Where are they defined that you skip description,
type and vendor prefix?

> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        ethernet@1{

Missing space

> +            compatible = "microchip,lan865x";
> +            reg = <1>; /* CE0 */

CE0? chip-select? What does this comment mean in this context?

> +            local-mac-address = [04 05 06 01 02 03];
> +            oa-chunk-size = <64>;
> +            oa-tx-cut-through;
> +            oa-rx-cut-through;
> +            oa-protected;



Best regards,
Krzysztof

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