linux-kernel - Re: [PATCH net-next v5 2/6] dt-bindings: net: Brcm ASP 2.0 Ethernet controller

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Message-ID: <273cb8e6-4756-1e65-695d-87c0227550a6@broadcom.com>
Date:   Wed, 31 May 2023 15:28:41 -0700
From:   Justin Chen <justin.chen@...adcom.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        bcm-kernel-feedback-list@...adcom.com
Cc:     florian.fainelli@...adcom.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, opendmb@...il.com, andrew@...n.ch,
        hkallweit1@...il.com, linux@...linux.org.uk,
        richardcochran@...il.com, sumit.semwal@...aro.org,
        christian.koenig@....com, simon.horman@...igine.com
Subject: Re: [PATCH net-next v5 2/6] dt-bindings: net: Brcm ASP 2.0 Ethernet
 controller



On 5/31/23 12:18 PM, Krzysztof Kozlowski wrote:
> On 25/05/2023 01:01, Justin Chen wrote:
>> From: Florian Fainelli <florian.fainelli@...adcom.com>
>>
>> Add a binding document for the Broadcom ASP 2.0 Ethernet
>> controller.
>>
>> Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
>> Signed-off-by: Justin Chen <justin.chen@...adcom.com>
>> ---
>> v5
>> 	- Fix compatible string yaml format to properly capture what we want
>>
>> v4
>>          - Adjust compatible string example to reference SoC and HW ver
>>
>> v3
>>          - Minor formatting issues
>>          - Change channel prop to brcm,channel for vendor specific format
>>          - Removed redundant v2.0 from compat string
>>          - Fix ranges field
>>
>> v2
>>          - Minor formatting issues
>>
>>   .../devicetree/bindings/net/brcm,asp-v2.0.yaml     | 149 +++++++++++++++++++++
>>   1 file changed, 149 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml b/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml
>> new file mode 100644
>> index 000000000000..c4cd24492bfd
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/net/brcm,asp-v2.0.yaml
>> @@ -0,0 +1,149 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/net/brcm,asp-v2.0.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Broadcom ASP 2.0 Ethernet controller
>> +
>> +maintainers:
>> +  - Justin Chen <justin.chen@...adcom.com>
>> +  - Florian Fainelli <florian.fainelli@...adcom.com>
>> +
>> +description: Broadcom Ethernet controller first introduced with 72165
>> +
>> +properties:
>> +  '#address-cells':
> 
> Judging by more comments, there will be a v6, thus please also use
> consistent quotes - either ' or ".
> 
>> +    const: 1
>> +  '#size-cells':
>> +    const: 1
>> +
>> +  compatible:
> 
> As Conor pointed out, compatible is always first.
> 
>> +    oneOf:
>> +      - items:
>> +          - enum:
>> +              - brcm,bcm74165-asp
>> +          - const: brcm,asp-v2.1
>> +      - items:
>> +          - enum:
>> +              - brcm,bcm72165-asp
>> +          - const: brcm,asp-v2.0
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  ranges: true
>> +
>> +  interrupts:
>> +    minItems: 1
>> +    items:
>> +      - description: RX/TX interrupt
>> +      - description: Port 0 Wake-on-LAN
>> +      - description: Port 1 Wake-on-LAN
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  ethernet-ports:
>> +    type: object
>> +    properties:
>> +      '#address-cells':
>> +        const: 1
>> +      '#size-cells':
>> +        const: 0
>> +
>> +    patternProperties:
>> +      "^port@[0-9]+$":
>> +        type: object
>> +
>> +        $ref: ethernet-controller.yaml#
>> +
>> +        properties:
>> +          reg:
>> +            maxItems: 1
>> +            description: Port number
>> +
>> +          brcm,channel:
>> +            $ref: /schemas/types.yaml#/definitions/uint32
>> +            description: ASP channel number
> 
> Why do you need it? reg defines it. Your description does not explain
> here much, except copying property name. Can we please avoid
> descriptions which just copy name?
> 
Will add a better description. The values may be different.

Thanks,
Justin

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