Message-ID: <f38158f6-5493-5b85-1353-9b75f66ad0d3@linaro.org>
Date:   Fri, 24 Feb 2023 11:57:40 +0100
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Subject: Re: [PATCH v3 02/11] dt-bindings: gpu: mali-bifrost: Split out
 MediaTek power-domains variation
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To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>, airlied@gmail.com
Cc:     daniel@ffwll.ch, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, steven.price@arm.com,
        alyssa.rosenzweig@collabora.com, matthias.bgg@gmail.com,
        robh@kernel.org, dri-devel@lists.freedesktop.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, wenst@chromium.org
References: <20230223133440.80941-1-angelogioacchino.delregno@collabora.com>
 <20230223133440.80941-3-angelogioacchino.delregno@collabora.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20230223133440.80941-3-angelogioacchino.delregno@collabora.com>
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Precedence: bulk

On 23/02/2023 14:34, AngeloGioacchino Del Regno wrote:
> In preparation for adding new bindings for new MediaTek SoCs, split out
> the power-domain-names and power-domainsvariation from the `else` in
> the current mediatek,mt8183-mali conditional.
> 
> The sram-supply part is left in place to be disallowed for anything
> that is not compatible with "mediatek,mt8183-mali" as this regulator
> is MediaTek-specific and it is, and will ever be, used only for this
> specific string due to the addition of the mediatek-regulator-coupler
> driver.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  .../devicetree/bindings/gpu/arm,mali-bifrost.yaml | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> index 02699d389be1..ac174c17e25f 100644
> --- a/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> +++ b/Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml
> @@ -145,6 +145,18 @@ allOf:
>          - power-domains
>          - resets
>          - reset-names
> +  - if:
> +      not:

I think this makes the binding difficult to maintain. You have:
1. if - amlogic - then - some properties
2. if - renesas - then - some properties
3. if - not mediatek - then - something else
4. if - mediatek - then - some properties

Instead just disallow power domains in each of other variants.

Best regards,
Krzysztof