linux-kernel - Re: [PATCH v5 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba SoC binding

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Date:   Tue, 14 Jun 2022 15:22:15 -0600
From:   Rob Herring <robh@...nel.org>
To:     Brad Larson <brad@...sando.io>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, adrian.hunter@...el.com,
        alcooperx@...il.com, andy.shevchenko@...il.com, arnd@...db.de,
        blarson@....com, brijeshkumar.singh@....com,
        catalin.marinas@....com, gsomlo@...il.com, gerg@...ux-m68k.org,
        krzk@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        lee.jones@...aro.org, broonie@...nel.org,
        yamada.masahiro@...ionext.com, p.zabel@...gutronix.de,
        piotrs@...ence.com, p.yadav@...com, rdunlap@...radead.org,
        samuel@...lland.org, fancer.lancer@...il.com,
        suravee.suthikulpanit@....com, thomas.lendacky@....com,
        ulf.hansson@...aro.org, will@...nel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v5 02/15] dt-bindings: mmc: cdns: Add AMD Pensando Elba
 SoC binding

On Mon, Jun 13, 2022 at 12:56:45PM -0700, Brad Larson wrote:
> From: Brad Larson <blarson@....com>
> 
> AMD Pensando Elba ARM 64-bit SoC is integrated with this IP and
> explicitly controls byte-lane enables.
> 
> Signed-off-by: Brad Larson <blarson@....com>
> ---
>  .../devicetree/bindings/mmc/cdns,sdhci.yaml        | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> index 4207fed62dfe..35bc4cf6f214 100644
> --- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> +++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> @@ -13,10 +13,24 @@ maintainers:
>  allOf:
>    - $ref: mmc-controller.yaml
>  
> +  - if:
> +      properties:
> +        compatible:
> +          enum:
> +            - amd,pensando-elba-sd4hc
> +    then:
> +      properties:
> +        reg:
> +          items:
> +            - description: Cadence host controller registers
> +            - description: Byte-lane control register
> +          minItems: 2

This doesn't work. The if/then is additional constraints on the main 
section which says there is only 1 register region. The main section 
needs the above, but with 'minItems: 1'. Then the if/then should be:

if:
  properties:
    compatible:
      const: amd,pensando-elba-sd4hc
then:
  properties:
    reg:
      minItems: 2
else:
  properties:
    reg:
      maxItems: 1


> +
>  properties:
>    compatible:
>      items:
>        - enum:
> +          - amd,pensando-elba-sd4hc
>            - microchip,mpfs-sd4hc
>            - socionext,uniphier-sd4hc
>        - const: cdns,sd4hc
> -- 
> 2.17.1
> 
>