linux-kernel - Re: [PATCH] dt-bindings: net: ethernet-controller: add 2.5G and 10G speeds

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Message-ID: <YZ6wHOu07okJ1p+3@lunn.ch>
Date:   Wed, 24 Nov 2021 22:35:24 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     David Heidelberg <david@...t.cz>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        ~okias/devicetree@...ts.sr.ht, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: net: ethernet-controller: add 2.5G and 10G
 speeds

On Wed, Nov 24, 2021 at 09:20:46PM +0100, David Heidelberg wrote:
> Both are already used by HW and drivers inside Linux.
> 
> Fix warnings as:
> arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var2.dt.yaml: ethernet@0,2: fixed-link:speed:0:0: 2500 is not one of [10, 100, 1000]
>         From schema: Documentation/devicetree/bindings/net/ethernet-controller.yaml
> 
> Signed-off-by: David Heidelberg <david@...t.cz>

This is valid for the binding, but not all Linux implementations of
fixed-link support > 1G. Only the phylink one does. But that is
outside the scope of the binding document.

You probably should list all speeds in
drivers/net/phy/phy-core.c:phy_setting settings[]. They are all valid
when using phylink and fixed-link.

	Andrew