linux-kernel - Re: [PATCH 1/4] dt-bindings: net: altr,socfpga-stmmac: Add compatible string for Agilex5

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Message-ID: <20250715035731.GA14648-robh@kernel.org>
Date: Mon, 14 Jul 2025 22:57:31 -0500
From: Rob Herring <robh@...nel.org>
To: Matthew Gerlach <matthew.gerlach@...era.com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, krzk+dt@...nel.org,
	conor+dt@...nel.org, mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com, dinguyen@...nel.org,
	maxime.chevallier@...tlin.com, richardcochran@...il.com,
	netdev@...r.kernel.org, devicetree@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: net: altr,socfpga-stmmac: Add
 compatible string for Agilex5

On Mon, Jul 14, 2025 at 08:25:25AM -0700, Matthew Gerlach wrote:
> Add compatible string for the Altera Agilex5 variant of the Synopsys DWC
> XGMAC IP version 2.10.
> 
> Signed-off-by: Matthew Gerlach <matthew.gerlach@...era.com>
> ---
>  .../devicetree/bindings/net/altr,socfpga-stmmac.yaml     | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
> index ec34daff2aa0..6d5c31c891de 100644
> --- a/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
> +++ b/Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml
> @@ -11,8 +11,8 @@ maintainers:
>  
>  description:
>    This binding describes the Altera SOCFPGA SoC implementation of the
> -  Synopsys DWMAC for the Cyclone5, Arria5, Stratix10, and Agilex7 families
> -  of chips.
> +  Synopsys DWMAC for the Cyclone5, Arria5, Stratix10, Agilex5 and Agilex7
> +  families of chips.
>    # TODO: Determine how to handle the Arria10 reset-name, stmmaceth-ocp, that
>    # does not validate against net/snps,dwmac.yaml.
>  
> @@ -23,6 +23,7 @@ select:
>          enum:
>            - altr,socfpga-stmmac
>            - altr,socfpga-stmmac-a10-s10
> +          - altr,socfpga-stmmac-agilex5
>  
>    required:
>      - compatible
> @@ -42,6 +43,10 @@ properties:
>            - const: altr,socfpga-stmmac-a10-s10
>            - const: snps,dwmac-3.74a
>            - const: snps,dwmac
> +      - items:
> +          - const: altr,socfpga-stmmac-agilex5

> +          - const: snps,dwxgmac-2.10
> +          - const: snps,dwxgmac

Is the distinction here useful? I doubt it, so I'd just drop the last 
one. Generally, we've moved away from any generic compatible for 
licensed IP like this because there's *always* some SoC specific 
difference. 

Rob