linux-kernel - Re: [PATCH v8 06/17] dt-bindings: mfd: amd,pensando-elbasr: Add AMD Pensando Elba System Resource chip

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Message-ID: <039986bb-a3e0-2482-9853-30532df10ff8@linaro.org>
Date:   Wed, 1 Feb 2023 10:57:16 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Brad Larson <blarson@....com>, robh@...nel.org
Cc:     adrian.hunter@...el.com, alcooperx@...il.com,
        andy.shevchenko@...il.com, arnd@...db.de, brad@...sando.io,
        brijeshkumar.singh@....com, broonie@...nel.org,
        catalin.marinas@....com, devicetree@...r.kernel.org,
        fancer.lancer@...il.com, gerg@...ux-m68k.org, gsomlo@...il.com,
        krzk@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        lee.jones@...aro.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
        p.yadav@...com, p.zabel@...gutronix.de, piotrs@...ence.com,
        rdunlap@...radead.org, samuel@...lland.org,
        suravee.suthikulpanit@....com, thomas.lendacky@....com,
        ulf.hansson@...aro.org, will@...nel.org,
        yamada.masahiro@...ionext.com
Subject: Re: [PATCH v8 06/17] dt-bindings: mfd: amd,pensando-elbasr: Add AMD
 Pensando Elba System Resource chip

On 30/01/2023 20:12, Brad Larson wrote:
> Hi Rob,
> 
> On Wednesday, November 16, 2022 2:30 PM, Rob Herring wrote:
>> On Wed, Nov 16, 2022 at 11:39:40AM -0800, Brad Larson wrote:
>>> Add support for the AMD Pensando Elba SoC System Resource chip
>>> using the SPI interface.
>>
>> Please resend the whole series properly threaded.
> 
> Series sent as v9
> 
>>> +description: |
>>> +  AMD Pensando Elba SoC Resource Controller functions are
>>> +  accessed with four chip-selects.  Reset control is on CS0.
>>
>> One device with 4 chip-selects? Then I'd expect 'reg = <0 1 2 3>;'
>>
>> Hard to say more because I don't have the whole thread nor remember what 
>> exactly we discussed before. That was 100s of bindings ago...
> 
> This has been changed to one device and four chip selects. This binding error
> is occuring for snps,dw-apb-ssi.yaml using reg for the chip selects.  Any
> guidance on how to fix? 
> 
> $ make ARCH=arm64 dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
>   LINT    Documentation/devicetree/bindings
>   CHKDT   Documentation/devicetree/bindings/processed-schema.json
>   SCHEMA  Documentation/devicetree/bindings/processed-schema.json
>   DTC_CHK arch/arm64/boot/dts/amd/elba-asic.dtb
> /home/brad/linux.v10/arch/arm64/boot/dts/amd/elba-asic.dtb: spi@...0: system-controller@0:reg: [[0], [1], [2], [3]] is too long
> 	From schema: /home/brad/linux.v10/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml

Maybe this would work in snps,dw-apb-ssi for children:

reg:
  items:
    minimum: 0
    maximum: 3

Best regards,
Krzysztof