linux-kernel - Re: [PATCH v1 1/5] dt-bindings: net: Add HPE GXP UMAC MDIO

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Date:   Mon, 24 Jul 2023 18:33:41 +0100
From:   Conor Dooley <conor@...nel.org>
To:     nick.hawkins@....com
Cc:     verdun@....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,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/5] dt-bindings: net: Add HPE GXP UMAC MDIO

On Fri, Jul 21, 2023 at 04:20:40PM -0500, nick.hawkins@....com wrote:
> From: Nick Hawkins <nick.hawkins@....com>
> 
> Provide access to the register regions and interrupt for Universal
> MAC(UMAC). The driver under the hpe,gxp-umac-mdio will provide an
> interface for managing both the internal and external PHYs.
> 
> Signed-off-by: Nick Hawkins <nick.hawkins@....com>
> ---
>  .../bindings/net/hpe,gxp-umac-mdio.yaml       | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.yaml
> 
> diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.yaml b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.yaml
> new file mode 100644
> index 000000000000..bb0db1bb67b1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac-mdio.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/hpe,gxp-umac-mdio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: HPE GXP UMAC MDIO Controller
> +
> +maintainers:
> +  - Nicholas Hawkins <nick.hawkins@....com>
> +
> +description: |+

You've got no formatting to preserve, so even | on its own would be
wasted here.

> +  The HPE GXP Unversal MAC (UMAC) MDIO controller provides a configuration
> +  path for both external PHY's and SERDES connected PHY's.
> +
> +allOf:
> +  - $ref: mdio.yaml#
> +
> +properties:
> +  compatible:
> +    const: hpe,gxp-umac-mdio
> +
> +  reg:
> +    maxItems: 1

> +    description: The register range of the MDIO controller instance

This is a statement of the obvious, no?

Otherwise, looks okay to me.
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

> +  resets:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#address-cells"
> +  - "#size-cells"
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    mdio0: mdio@...0 {
> +      compatible = "hpe,gxp-umac-mdio";
> +      reg = <0x4080 0x10>;
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      ethphy0: ethernet-phy@0 {
> +        compatible = "ethernet-phy-ieee802.3-c22";
> +        phy-mode = "sgmii";
> +        reg = <0>;
> +      };
> +    };
> -- 
> 2.17.1
> 

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