linux-kernel - Re: [PATCH 2/5] dt-bindings: phy: mediatek,mt7621-pci-phy: add clock entries

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Message-ID: <20210507221200.GA2984128@robh.at.kernel.org>
Date:   Fri, 7 May 2021 17:12:00 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>
Cc:     vkoul@...nel.org, linux-phy@...ts.infradead.org, kishon@...com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev, gregkh@...uxfoundation.org,
        neil@...wn.name, ilya.lipnitskiy@...il.com
Subject: Re: [PATCH 2/5] dt-bindings: phy: mediatek,mt7621-pci-phy: add clock
 entries

On Thu, May 06, 2021 at 01:15:28PM +0200, Sergio Paracuellos wrote:
> MT7621 SoC clock driver has already mainlined in
> 'commit 48df7a26f470 ("clk: ralink: add clock driver for mt7621 SoC")'
> Hence update schema with the add of the entries related to
> clock.
> 
> Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> ---
>  .../bindings/phy/mediatek,mt7621-pci-phy.yaml        | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/mediatek,mt7621-pci-phy.yaml b/Documentation/devicetree/bindings/phy/mediatek,mt7621-pci-phy.yaml
> index 0ccaded3f245..d8614ef8995c 100644
> --- a/Documentation/devicetree/bindings/phy/mediatek,mt7621-pci-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/mediatek,mt7621-pci-phy.yaml
> @@ -16,6 +16,14 @@ properties:
>    reg:
>      maxItems: 1
>  
> +  clocks:
> +    maxItems: 1
> +    description:
> +      PHY reference clock. Must contain an entry in clock-names.
> +
> +  clock-names:
> +    const: sys_clk

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

> +
>    "#phy-cells":
>      const: 1
>      description: selects if the phy is dual-ported
> @@ -23,6 +31,8 @@ properties:
>  required:
>    - compatible
>    - reg
> +  - clocks
> +  - clock-names

Technically, you can't add new properties and make them required as that 
breaks the ABI. If that's okay here, explain it in the commit message. 

>    - "#phy-cells"
>  
>  additionalProperties: false
> @@ -32,5 +42,7 @@ examples:
>      pcie0_phy: pcie-phy@...49000 {
>        compatible = "mediatek,mt7621-pci-phy";
>        reg = <0x1e149000 0x0700>;
> +      clocks = <&sysc 0>;
> +      clock-names = "sys_clk";
>        #phy-cells = <1>;
>      };
> -- 
> 2.25.1
>