netdev - Re: [PATCH v4 4/7] dt-bindings: net: Add support StarFive dwmac

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Date:   Fri, 3 Feb 2023 13:58:20 +0800
From:   yanhong wang <yanhong.wang@...rfivetech.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <linux-riscv@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     "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>,
        Emil Renner Berthing <kernel@...il.dk>,
        Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Peter Geis <pgwipeout@...il.com>
Subject: Re: [PATCH v4 4/7] dt-bindings: net: Add support StarFive dwmac



On 2023/1/18 23:49, Krzysztof Kozlowski wrote:
> On 18/01/2023 07:16, Yanhong Wang wrote:
>> Add documentation to describe StarFive dwmac driver(GMAC).
>> 
>> Signed-off-by: Yanhong Wang <yanhong.wang@...rfivetech.com>
> 
> 
> Subject is poor. You miss device prefix and it's not correct sentence.
> 
> "Add support for XYZ"
> or better:
> "Add XYZ"
> 

Thanks. I will change to "Add support for JH7110" in the next version.

> 
>> ---
>>  .../devicetree/bindings/net/snps,dwmac.yaml   |   1 +
>>  .../bindings/net/starfive,jh7110-dwmac.yaml   | 113 ++++++++++++++++++
>>  MAINTAINERS                                   |   5 +
>>  3 files changed, 119 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> 
>> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> index baf2c5b9e92d..8b07bc9c8b00 100644
>> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> @@ -91,6 +91,7 @@ properties:
>>          - snps,dwmac-5.20
>>          - snps,dwxgmac
>>          - snps,dwxgmac-2.10
>> +        - starfive,jh7110-dwmac
>>  
>>    reg:
>>      minItems: 1
>> diff --git a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> new file mode 100644
>> index 000000000000..eb0767da834a
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> @@ -0,0 +1,113 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +# Copyright (C) 2022 StarFive Technology Co., Ltd.
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/net/starfive,jh7110-dwmac.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: StarFive JH7110 DWMAC glue layer
>> +
>> +maintainers:
>> +  - Yanhong Wang <yanhong.wang@...rfivetech.com>
>> +
>> +select:
>> +  properties:
>> +    compatible:
>> +      contains:
>> +        enum:
>> +          - starfive,jh7110-dwmac
>> +  required:
>> +    - compatible
>> +
>> +properties:
>> +  compatible:
>> +    items:
>> +      - enum:
>> +          - starfive,jh7110-dwmac
>> +      - const: snps,dwmac-5.20
>> +
>> +  clocks:
>> +    items:
>> +      - description: GMAC main clock
>> +      - description: GMAC AHB clock
>> +      - description: PTP clock
>> +      - description: TX clock
>> +      - description: GTXC clock
>> +      - description: GTX clock
>> +
>> +  clock-names:
>> +    items:
>> +      - const: stmmaceth
>> +      - const: pclk
>> +      - const: ptp_ref
>> +      - const: tx
>> +      - const: gtxc
>> +      - const: gtx
>> +
>> +  resets:
>> +    items:
>> +      - description: MAC Reset signal.
> 
> Drop trailing dot
> 

I will fix.

>> +      - description: AHB Reset signal.
> 
> Ditto
> 

I will fix.

>> +
>> +  reset-names:
>> +    items:
>> +      - const: stmmaceth
>> +      - const: ahb
> 
> You have two resets. Why do you change them to three for all variants?
> It's not explained in commit 2/7, so this is confusing.
> 

Refer to the definition of clocks, define the value of maxItems slightly larger (3),
and reserve a little expandable space without affecting other definitions.
If you need to configure 3 resets in the future, you only need to define it
in individual schemas, and you don't need to adjust this item anymore.  
I will adjust maxItems to 2 in the next version.

>> +
>> +allOf:
>> +  - $ref: snps,dwmac.yaml#
>> +
>> +unevaluatedProperties: true
>> +
>> +required:
>> +  - compatible
>> +  - clocks
>> +  - clock-names
>> +  - resets
>> +  - reset-names
>> +
> 
> 
> Best regards,
> Krzysztof
>