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Date: Mon, 8 Apr 2024 07:57:35 +0200
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Subject: Re: [PATCH v2 1/6] dt-bindings: firmware: arm,scmi: set
 additionalProperties to true
To: Peng Fan <peng.fan@nxp.com>, "Peng Fan (OSS)" <peng.fan@oss.nxp.com>,
 Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,
 Conor Dooley <conor+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
 Sascha Hauer <s.hauer@pengutronix.de>,
 Pengutronix Kernel Team <kernel@pengutronix.de>,
 Fabio Estevam <festevam@gmail.com>, Sudeep Holla <sudeep.holla@arm.com>,
 Cristian Marussi <cristian.marussi@arm.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
 "imx@lists.linux.dev" <imx@lists.linux.dev>,
 "linux-arm-kernel@lists.infradead.org"
 <linux-arm-kernel@lists.infradead.org>,
 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
References: <20240405-imx95-bbm-misc-v2-v2-0-9fc9186856c2@nxp.com>
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From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <DU0PR04MB9417839C42681F57366003EF88012@DU0PR04MB9417.eurprd04.prod.outlook.com>
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On 08/04/2024 01:50, Peng Fan wrote:
>> Subject: Re: [PATCH v2 1/6] dt-bindings: firmware: arm,scmi: set
>> additionalProperties to true
>>
>> On 07/04/2024 12:04, Peng Fan wrote:
>>>> Subject: Re: [PATCH v2 1/6] dt-bindings: firmware: arm,scmi: set
>>>> additionalProperties to true
>>>>
>>>> On 07/04/2024 02:37, Peng Fan wrote:
>>>>>> Subject: Re: [PATCH v2 1/6] dt-bindings: firmware: arm,scmi: set
>>>>>> additionalProperties to true
>>>>>>
>>>>>> On 05/04/2024 14:39, Peng Fan (OSS) wrote:
>>>>>>> From: Peng Fan <peng.fan@nxp.com>
>>>>>>>
>>>>>>> When adding vendor extension protocols, there is dt-schema warning:
>>>>>>> "
>>>>>>> imx,scmi.example.dtb: scmi: 'protocol@81', 'protocol@84' do not
>>>>>>> match any of the regexes: 'pinctrl-[0-9]+'
>>>>>>> "
>>>>>>>
>>>>>>> Set additionalProperties to true to address the issue.
>>>>>>
>>>>>> I do not see anything addressed here, except making the binding
>>>>>> accepting anything anywhere...
>>>>>
>>>>> I not wanna add vendor protocols in arm,scmi.yaml, so will introduce
>>>>> a new yaml imx.scmi.yaml which add i.MX SCMI protocol extension.
>>>>>
>>>>> With additionalProperties set to false, I not know how, please suggest.
>>>>
>>>> First of all, you cannot affect negatively existing devices (their
>>>> bindings) and your patch does exactly that. This should make you
>>>> thing what is the correct approach...
>>>>
>>>> Rob gave you the comment about missing compatible - you still did not
>>>> address that.
>>>
>>> I added the compatible in patch 2/6 in the examples "compatible =
>> "arm,scmi";"
>>
>> So you claim that your vendor extensions are the same or fully compatible
>> with arm,scmi and you add nothing... Are your extensions/protocol valid for
>> arm,scmi?
> 
> Yes. They are valid for arm,scmi.
> 
>  If yes, why is this in separate binding. If no, why you use someone
>> else's compatible?
> 
> Per SCMI Spec
> 0x80-0xFF: Reserved for vendor or platform-specific extensions to
> this interface
> 
> i.MX use 0x81 for BBM, 0x84 for MISC. But other vendors will use
> the id for their own protocol.

So how are they valid for arm,scmi? I don't understand.


Best regards,
Krzysztof