linux-kernel - Re: [PATCH 1/2] spi: dt-binding: add Microchip CoreQSPI compatible

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Date:   Tue, 2 Aug 2022 10:52:25 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Naga Sureshkumar Relli <nagasuresh.relli@...rochip.com>,
        broonie@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor.dooley@...rochip.com
Cc:     linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] spi: dt-binding: add Microchip CoreQSPI compatible

On 01/08/2022 11:42, Naga Sureshkumar Relli wrote:
> Add compatible string for Microchip CoreQSPI controller.
> 
> Signed-off-by: Naga Sureshkumar Relli <nagasuresh.relli@...rochip.com>
> ---
>  .../devicetree/bindings/spi/microchip,mpfs-spi.yaml    | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml b/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml
> index 7326c0a28d16..b65f4e070796 100644
> --- a/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml
> +++ b/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml
> @@ -14,9 +14,13 @@ allOf:
>  
>  properties:
>    compatible:
> -    enum:
> -      - microchip,mpfs-spi
> -      - microchip,mpfs-qspi
> +    oneOf:
> +      - description: Microchip's Polarfire SoC SPI controller.
> +        const: microchip,mpfs-spi
> +      - description: Microchip's Polarfire SoC QSPI controller.

Useless descriptions - they repeat compatible. Just keep it as enum and
skip descriptions. What value do they bring?

> +        const: microchip,mpfs-qspi
> +      - description: Microchip's FPGA QSPI controller.
> +        const: microchip,coreqspi-rtl-v2

Best regards,
Krzysztof