Re: [PATCH 3/3] dt-bindings: net: rename Qualcomm IPQ MDIO bindings

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On Thu, Jul 29, 2021 at 6:54 AM Luo Jie <luoj@xxxxxxxxxxxxxx> wrote:
>
> rename ipq4019-mdio.yaml to ipq-mdio.yaml for supporting more
> ipq boards such as ipq40xx, ipq807x, ipq60xx and ipq50xx.
>
> Signed-off-by: Luo Jie <luoj@xxxxxxxxxxxxxx>
> ---
>  ...m,ipq4019-mdio.yaml => qcom,ipq-mdio.yaml} | 32 ++++++++++++++++---
>  1 file changed, 28 insertions(+), 4 deletions(-)
>  rename Documentation/devicetree/bindings/net/{qcom,ipq4019-mdio.yaml => qcom,ipq-mdio.yaml} (58%)
>
> diff --git a/Documentation/devicetree/bindings/net/qcom,ipq4019-mdio.yaml b/Documentation/devicetree/bindings/net/qcom,ipq-mdio.yaml
> similarity index 58%
> rename from Documentation/devicetree/bindings/net/qcom,ipq4019-mdio.yaml
> rename to Documentation/devicetree/bindings/net/qcom,ipq-mdio.yaml
> index 0c973310ada0..5bdeb461523b 100644
> --- a/Documentation/devicetree/bindings/net/qcom,ipq4019-mdio.yaml
> +++ b/Documentation/devicetree/bindings/net/qcom,ipq-mdio.yaml
> @@ -1,10 +1,10 @@
>  # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>  %YAML 1.2
>  ---
> -$id: http://devicetree.org/schemas/net/qcom,ipq4019-mdio.yaml#
> +$id: http://devicetree.org/schemas/net/qcom,ipq-mdio.yaml#
>  $schema: http://devicetree.org/meta-schemas/core.yaml#
>
> -title: Qualcomm IPQ40xx MDIO Controller Device Tree Bindings
> +title: Qualcomm IPQ MDIO Controller Device Tree Bindings
>
>  maintainers:
>    - Robert Marko <robert.marko@xxxxxxxxxx>
> @@ -14,7 +14,9 @@ allOf:
>
>  properties:
>    compatible:
> -    const: qcom,ipq4019-mdio
> +    oneOf:
> +      - const: qcom,ipq4019-mdio
> +      - const: qcom,ipq-mdio

This is more than the commit log suggests. A generic compatible by
itself is not sufficient. If other chips have the same block, just use
'qcom,ipq4019-mdio'. They should also have a compatible for the new
SoC in case it's not 'the same'.

Also, use 'enum' rather than oneOf plus const.

>
>    "#address-cells":
>      const: 1
> @@ -23,7 +25,29 @@ properties:
>      const: 0
>
>    reg:
> -    maxItems: 1
> +    maxItems: 2

This breaks compatibility because now 1 entry is not valid.

> +
> +  clocks:
> +    items:
> +      - description: MDIO clock
> +
> +  clock-names:
> +    items:
> +      - const: gcc_mdio_ahb_clk
> +
> +  resets:
> +    items:
> +      - description: MDIO reset & GEPHY hardware reset
> +
> +  reset-names:
> +    items:
> +      - const: gephy_mdc_rst

These all now apply to 'qcom,ipq4019-mdio'. The h/w had no clocks or
resets and now does?

You don't need *-names when there is only 1.

> +  phy-reset-gpios:
> +    maxItems: 3
> +    description:
> +      The phandle and specifier for the GPIO that controls the RESET
> +      lines of PHY devices on that MDIO bus.

This belongs in the phy node since the reset is connected to the phy.

>
>  required:
>    - compatible
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>



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