linux-kernel - Re: [PATCH 1/2] dt-bindings: net: phy: Support external PHY xtal

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Message-ID: <ade45bcf-c174-429a-96ca-d0ffb41748d4@lunn.ch>
Date:   Wed, 31 May 2023 17:16:46 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Detlev Casanova <detlev.casanova@...labora.com>
Cc:     linux-kernel@...r.kernel.org,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: net: phy: Support external PHY xtal

On Wed, May 31, 2023 at 11:03:39AM -0400, Detlev Casanova wrote:
> Ethernet PHYs can have external an clock that needs to be activated before
> probing the PHY.
> 
> Signed-off-by: Detlev Casanova <detlev.casanova@...labora.com>
> ---
>  .../devicetree/bindings/net/ethernet-phy.yaml          | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> index 4f574532ee13..e83a33c2aa59 100644
> --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
> @@ -93,6 +93,16 @@ properties:
>        the turn around line low at end of the control phase of the
>        MDIO transaction.
>  
> +  clock-names:
> +    items:
> +      - const: xtal

I don't think xtal is the best of names here. It generally is used as
an abbreviation for crystal. And the commit message is about there not
being a crystal, but an actual clock.

How is this clock named on the datasheet?

    Andrew