linux-kernel - Re: [PATCH v5 1/3] dt-bindings: exynos-dw-mshc-common: add exynos7885 variants

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Message-ID: <1bd962b1-2fbc-9bdb-8b7a-9f2c70c316e2@linaro.org>
Date:   Tue, 14 Mar 2023 20:49:31 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sergey Lisov <sleirsgoevy@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Jaehoon Chung <jh80.chung@...sung.com>
Cc:     linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/3] dt-bindings: exynos-dw-mshc-common: add exynos7885
 variants

On 12/03/2023 18:58, Sergey Lisov wrote:
> Some Samsung Exynos boards using the arm64 architecture have DW MMC
> controllers configured for a 32-bit data bus but a 64-bit FIFO. On these
> systems the 64-bit FIFO registers must be accessed in two 32-bit halves.
> 
> Add two new compatible strings, "samsung,exynos7885-dw-mshc" and
> "samsung,exynos7885-dw-mshc-smu" respectively, to denote exynos7885
> boards that need this quirk. But it's very possible that all
> "samsung,exynos7-dw-mshc" boards are actually affected.
> ---
>  .../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml         | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> index fdaa18481..3eebaed2c 100644
> --- a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> +++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> @@ -22,6 +22,8 @@ properties:
>        - samsung,exynos5420-dw-mshc-smu
>        - samsung,exynos7-dw-mshc
>        - samsung,exynos7-dw-mshc-smu
> +      - samsung,exynos7885-dw-mshc
> +      - samsung,exynos7885-dw-mshc-smu

What about the if-then at the end? Since this is pretty compatible with
exynos7, then I would expect being added also there.

Best regards,
Krzysztof