Re: [PATCH v8 04/10] dt-bindings: soc: google: gs101-pmu: allow power domains as children

[Krzysztof Kozlowski <krzk@kernel.org>]

On 18/03/2026 16:27, André Draszik wrote:
> The power domains are a property of / implemented in the PMU. As such,
> they should be modelled as child nodes of the PMU.
> 
> Note:
> Because the properties added are 'required', this commit breaks DT
> validation of the existing DT for Pixel 6, but a) that's simply because
> the DT is incomplete and b) a DT update will be posted once the binding
> is accepted.
> It is not possible to write the binding such that it supports old
> (incomplete) DTs in addition to the full version, but as per above
> it's not required to keep supporting old DTs.
> 
> Signed-off-by: André Draszik <andre.draszik@linaro.org>
> ---
> v8:
> - move comment from commit message footer into body (Rob)
> - fix incorrect use of ranges in example (Rob)
> 
> v7:
> - really be consistent with quoting (Krzysztof)
> - drop invalid tested-by tag (Krzysztof)
> 
> v4:
> - consistent quoting using " (Krzysztof)
> - add samsung,dtzpc to example
> ---
>  .../bindings/soc/google/google,gs101-pmu.yaml      | 41 ++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml b/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
> index a06bd8ec3c20..52c47252b801 100644
> --- a/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
> +++ b/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
> @@ -16,6 +16,14 @@ properties:
>    reg:
>      maxItems: 1
>  
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +  ranges: true
> +
>    reboot-mode:
>      $ref: /schemas/power/reset/syscon-reboot-mode.yaml
>      type: object
> @@ -39,9 +47,23 @@ properties:
>      description:
>        Phandle to PMU interrupt generation interface.
>  
> +patternProperties:
> +  "^power-domain@[0-9a-f]+$":
> +    type: object
> +    description: Child node describing one power domain within the PMU
> +
> +    additionalProperties: true
> +
> +    properties:
> +      compatible:
> +        const: google,gs101-pd
> +
>  required:
>    - compatible
>    - reg
> +  - "#address-cells"
> +  - "#size-cells"
> +  - ranges

This causes warnings, so I dropped the patches. I really do not
understand how this is organized. This is not a dependency for pm
domains driver but it is included here. It is a soft dependency for DTS,
but that is nowhere to be found.

Best regards,
Krzysztof