linux-kernel - Re: [PATCH net-next v2 4/9] dt-bindings: net: add OPEN Alliance 10BASE-T1x MAC-PHY Serial Interface

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Message-ID: <478c0e7e-bdff-41af-a12f-f9930f1c665a@linaro.org>
Date:   Tue, 24 Oct 2023 09:44:04 +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: [PATCH net-next v2 4/9] dt-bindings: net: add OPEN Alliance
 10BASE-T1x MAC-PHY Serial Interface

On 23/10/2023 17:46, Parthiban Veerasooran wrote:
> Add DT bindings OPEN Alliance 10BASE-T1x MACPHY Serial Interface
> parameters. These are generic properties that can apply to any 10BASE-T1x
> MAC-PHY which uses OPEN Alliance TC6 specification.

Except that it was not tested at all few more issues.

> 
> Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
> ---
>  .../devicetree/bindings/net/oa-tc6.yaml       | 72 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 73 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/oa-tc6.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/oa-tc6.yaml b/Documentation/devicetree/bindings/net/oa-tc6.yaml
> new file mode 100644
> index 000000000000..9f442fa6cace
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/oa-tc6.yaml

Filename based on compatible.

> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/oa-tc6.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: OPEN Alliance 10BASE-T1x MAC-PHY Specification Common Properties
> +
> +maintainers:
> +  - Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>
> +
> +description:
> +  These are generic properties that can apply to any 10BASE-T1x MAC-PHY
> +  which uses OPEN Alliance TC6 specification.
> +
> +  10BASE-T1x MAC-PHY Serial Interface Specification can be found at:
> +    https://opensig.org/about/specifications/
> +
> +properties:
> +  $nodename:
> +    pattern: "^oa-tc6(@.*)?"

Drop

> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0

Why?

> +
> +  oa-cps:
> +    maxItems: 1
> +    description:
> +      Chunk Payload Size. Configures the data chunk payload size to 2^N,
> +      where N is the value of this bitfield. The minimum possible data
> +      chunk payload size is 8 bytes or N = 3. The default data chunk
> +      payload size is 64 bytes, or N = 6. The minimum supported data chunk
> +      payload size for this MAC-PHY device is indicated in the CPSMIN
> +      field of the CAPABILITY register. Valid values for this parameter
> +      are 8, 16, 32 and 64. All other values are reserved.
> +
> +  oa-txcte:
> +    maxItems: 1
> +    description:
> +      Transmit Cut-Through Enable. When supported by this MAC-PHY device,
> +      this bit enables the cut-through mode of frame transfer through the
> +      MAC-PHY device from the SPI host to the network.
> +
> +  oa-rxcte:
> +    maxItems: 1
> +    description:
> +      Receive Cut-Through Enable. When supported by this MAC-PHY device,
> +      this bit enables the cut-through mode of frame transfer through the
> +      MAC-PHY device from the network to the SPI host.
> +
> +  oa-prote:
> +    maxItems: 1
> +    description:
> +      Control data read/write Protection Enable. When set, all control
> +      data written to and read from the MAC-PHY will be transferred with
> +      its complement for detection of bit errors.
> +
> +additionalProperties: true
> +
> +examples:
> +  - |
> +    oa-tc6 {
> +        #address-cells = <1>;
> +	#size-cells = <0>;

That's some total mess in indentation.

> +	oa-cps = <64>;
> +	oa-txcte;
> +	oa-rxcte;
> +	oa-prote;
> +    };
Best regards,
Krzysztof