Re: [PATCH v3 02/11] dt-bindings: gpu: mali-bifrost: Split out MediaTek power-domains variation

[Krzysztof Kozlowski]

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@xxxxxxxxxxxxx>
> ---
>  .../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