linux-kernel - Re: [PATCH v3 1/3] dt-bindings: i2c: dw: Document compatible thead,th1520-i2c

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Message-ID: <a55524d8-40f0-44ba-a42f-c63a487ccb45@kernel.org>
Date: Wed, 19 Jun 2024 09:39:46 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
 Thomas Bonnefille <thomas.bonnefille@...tlin.com>,
 Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Jisheng Zhang <jszhang@...nel.org>,
 Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
 Drew Fustini <dfustini@...storrent.com>,
 Emil Renner Berthing <emil.renner.berthing@...onical.com>,
 Conor Dooley <conor@...nel.org>
Cc: Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Paul Walmsley <paul.walmsley@...ive.com>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
 Miquèl Raynal <miquel.raynal@...tlin.com>,
 linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
 Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v3 1/3] dt-bindings: i2c: dw: Document compatible
 thead,th1520-i2c

On 19/06/2024 08:40, Jarkko Nikula wrote:
> Hi
> 
> On 6/18/24 10:42 AM, Thomas Bonnefille wrote:
>> Add documentation for compatible string thead,th1520-i2c which can be
>> used specifically for the TH1520 SoC.
>>
>> Signed-off-by: Thomas Bonnefille <thomas.bonnefille@...tlin.com>
>> Acked-by: Conor Dooley <conor.dooley@...rochip.com>
>> ---
>>   Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
>> index d9293c57f573..60035a787e5c 100644
>> --- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
>> +++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
>> @@ -33,6 +33,10 @@ properties:
>>             - const: snps,designware-i2c
>>         - description: Baikal-T1 SoC System I2C controller
>>           const: baikal,bt1-sys-i2c
>> +      - description: T-HEAD TH1520 SoCs I2C controller
>> +        items:
>> +          - const: thead,th1520-i2c
>> +          - const: snps,designware-i2c
>>   
> 
> Your comment below makes me thinking is this change needed? So is it 
> enough to specify "snps,designware-i2c" for the compatible string in 
> patch 2/3?

SoC specific compatible is always required (see writing bindings doc).

Best regards,
Krzysztof