netdev - Re: [PATCH net-next 2/3] dt-bindings: net: add T-HEAD dwmac support

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Date: Mon, 21 Aug 2023 08:29:10 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jisheng Zhang <jszhang@...nel.org>, "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>,
 Giuseppe Cavallaro <peppe.cavallaro@...com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Jose Abreu <joabreu@...opsys.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org,
 linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH net-next 2/3] dt-bindings: net: add T-HEAD dwmac support

On 20/08/2023 14:02, Jisheng Zhang wrote:
> Add documentation to describe T-HEAD dwmac.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---

Thank you for your patch. There is something to discuss/improve.

> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/thead,dwmac.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: T-HEAD DWMAC glue layer

Describe/name rather the actual device, not some layer.

> +
> +maintainers:
> +  - Jisheng Zhang <jszhang@...nel.org>
> +
> +select:
> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - thead,th1520-dwmac
> +  required:
> +    - compatible
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - thead,th1520-dwmac
> +      - const: snps,dwmac-3.70a
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: GMAC main clock
> +      - description: AXI clock
> +
> +  clock-names:
> +    items:
> +      - const: stmmaceth
> +      - const: axi

Isn't basically axi clock a pclk? You should rather use the names from
snps,dwmac

> +
> +  thead,gmacapb:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      The phandle to the syscon node that control ethernet
> +      interface and timing delay.
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - interrupt-names
> +  - phy-mode
> +  - thead,gmacapb

Best regards,
Krzysztof