netdev - Re: [PATCH v2 04/12] dt-bindings: net: starfive,jh7110-dwmac: Add JH7100 SoC compatible

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Message-ID: <e86247b3-a6f4-44cf-90c4-583d850f6dd8@collabora.com>
Date: Mon, 30 Oct 2023 00:15:37 +0200
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.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>, Emil Renner Berthing <kernel@...il.dk>,
 Samin Guo <samin.guo@...rfivetech.com>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Jose Abreu <joabreu@...opsys.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Richard Cochran <richardcochran@...il.com>,
 Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v2 04/12] dt-bindings: net: starfive,jh7110-dwmac: Add
 JH7100 SoC compatible

On 10/29/23 13:24, Krzysztof Kozlowski wrote:
> On 29/10/2023 05:27, Cristian Ciocaltea wrote:
>> The Synopsys DesignWare MAC found on StarFive JH7100 SoC is quite
>> similar to the newer JH7110, but it requires only two interrupts and a
>> single reset line.
>>
>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
>> ---
>>  .../devicetree/bindings/net/snps,dwmac.yaml   |  1 +
>>  .../bindings/net/starfive,jh7110-dwmac.yaml   | 74 +++++++++++++------
>>  2 files changed, 54 insertions(+), 21 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> index a4d7172ea701..c1380ff1c054 100644
>> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> @@ -95,6 +95,7 @@ properties:
>>          - snps,dwmac-5.20
>>          - snps,dwxgmac
>>          - snps,dwxgmac-2.10
>> +        - starfive,jh7100-dwmac
>>          - starfive,jh7110-dwmac
>>  
>>    reg:
>> diff --git a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> index 44e58755a5a2..70e35a3401f4 100644
>> --- a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> +++ b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>> @@ -13,10 +13,14 @@ maintainers:
>>  
>>  properties:
>>    compatible:
>> -    items:
>> -      - enum:
>> -          - starfive,jh7110-dwmac
>> -      - const: snps,dwmac-5.20
>> +    oneOf:
>> +      - items:
>> +          - const: starfive,jh7100-dwmac
>> +          - const: snps,dwmac
>> +      - items:
>> +          - enum:
>> +              - starfive,jh7110-dwmac
>> +          - const: snps,dwmac-5.20
> 
> Why do you use different fallback?

AFAIK, dwmac-5.20 is currently only used by JH7110.

>>  
>>    reg:
>>      maxItems: 1
>> @@ -37,23 +41,6 @@ properties:
>>        - const: tx
>>        - const: gtx
>>  
>> -  interrupts:
>> -    minItems: 3
>> -    maxItems: 3
>> -
>> -  interrupt-names:
>> -    minItems: 3
>> -    maxItems: 3
>> -
>> -  resets:
>> -    minItems: 2
>> -    maxItems: 2
> 
> You just changed it in previous patches... So the previous code allowing
> one item was correct?

I mentioned the possible use-cases in the previous email. So yes, JH7110
requires 2 resets, while JH7100 just one.

Regards,
Cristian