linux-kernel - Re: [PATCH v1 3/3] dt-bindings: net: sun8i-emac: Add AC300 EMAC1 nvmem phy selection

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Message-ID: <20250527-loutish-shaggy-starling-f558fb@kuoka>
Date: Tue, 27 May 2025 08:21:04 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: James Hilliard <james.hilliard1@...il.com>
Cc: netdev@...r.kernel.org, linux-sunxi@...ts.linux.dev, 
	Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Samuel Holland <samuel@...lland.org>, 
	Maxime Ripard <mripard@...nel.org>, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/3] dt-bindings: net: sun8i-emac: Add AC300 EMAC1
 nvmem phy selection

On Mon, May 26, 2025 at 12:29:36PM GMT, James Hilliard wrote:
> The Allwinner H616 EMAC1 can be connected to an on-die AC200 or AC300
> PHY depending upon the silicon variant.
> 
> Add a new allwinner,sun50i-h616-emac1 compatible and example, support
> for the allwinner,sun50i-h616-emac1 will be added later on.
> 
> Add nvmem-cells and nvmem-cell-names properties for the ac300 efuse
> based phy selection.
> 
> Signed-off-by: James Hilliard <james.hilliard1@...il.com>
> ---
>  .../net/allwinner,sun8i-a83t-emac.yaml        | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
> index 7fe0352dff0f..b6bf1718dba1 100644
> --- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
> +++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
> @@ -18,6 +18,7 @@ properties:
>        - const: allwinner,sun8i-r40-gmac
>        - const: allwinner,sun8i-v3s-emac
>        - const: allwinner,sun50i-a64-emac
> +      - const: allwinner,sun50i-h616-emac1
>        - items:
>            - enum:
>                - allwinner,sun20i-d1-emac
> @@ -28,6 +29,14 @@ properties:
>    reg:
>      maxItems: 1
>  
> +  nvmem-cells:
> +    maxItems: 1
> +    description: NVMEM cell with the ac300 efuse.
> +
> +  nvmem-cell-names:
> +    items:
> +      - const: ac300
> +
>    interrupts:
>      maxItems: 1
>  
> @@ -321,4 +330,37 @@ examples:
>          };
>      };
>  
> +  - |
> +    ethernet@...0000 {
> +        compatible = "allwinner,sun50i-h616-emac1";
> +        reg = <0x05030000 0x10000>;

No need for new example for every soc.

But if you ever decide to add new example, it must work. Please test
your patches prior to sending them.

Best regards,
Krzysztof