linux-kernel - Re: [PATCH 1/2] dt-bindings: mfd: syscon: Add img,boston-platform-regs

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Date: Fri, 17 May 2024 10:58:38 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jiaxun Yang <jiaxun.yang@...goat.com>, Lee Jones <lee@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 "paulburton@...nel.org" <paulburton@...nel.org>,
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: mfd: syscon: Add
 img,boston-platform-regs

On 15/05/2024 23:44, Jiaxun Yang wrote:
> 
> 
> 在2024年5月14日五月 上午10:11，Krzysztof Kozlowski写道：
>> On 14/05/2024 11:08, Krzysztof Kozlowski wrote:
>>> On 13/05/2024 20:58, Jiaxun Yang wrote:
>>>> This compatible has been used in arch/mips/boot/dts/img/boston.dts
>>>> for a while but never documented properly.
>>>>
>>>> Add it to simple syscon binding.
>>>>
>>>> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
>>>> ---
>>>>  Documentation/devicetree/bindings/mfd/syscon.yaml | 1 +
>>>
>>> It is documented in clock/img,boston-clock.txt. Please fix/convert/work
>>> on that.
>>
>> No, that's different device.
>>
>> Anyway, this is wrong - does no work with your second patch. Please test
>> them before sending.
> 
> Hi Krzysztof,
> 
> Do you mind telling dumb as me how to test bindings properly?
> 
> I tried to run make check_dtbs after applying this patch and that's all
> the warnings I got:
> ```
> arch/mips/boot/dts/img/boston.dtb: Warning (interrupt_map): Failed prerequisite 'interrupt_provider'
> /home/flygoat/linux-next/arch/mips/boot/dts/img/boston.dtb: /: 'model' is a required property
>         from schema $id: http://devicetree.org/schemas/root-node.yaml#
> arch/mips/boot/dts/img/boston.dtb: /: failed to match any schema with compatible: ['img,boston']
> arch/mips/boot/dts/img/boston.dtb: /cpus/cpu@0: failed to match any schema with compatible: ['img,mips']
> arch/mips/boot/dts/img/boston.dtb: /system-controller@...fd000/clock: failed to match any schema with compatible: ['img,boston-clock']
> /home/flygoat/linux-next/arch/mips/boot/dts/img/boston.dtb: uart@...fe000: $nodename:0: 'uart@...fe000' does not match '^serial(@.*)?$'
>         from schema $id: http://devicetree.org/schemas/serial/8250.yaml#
> ```
> 
> I think there is no new warning introduced by this patch.
> Did I miss anything here?

Indeed there might be no warning for this, because syscon allows a lot,
including children. You need custom binding anyway.

Best regards,
Krzysztof