[PATCH 6/9] dt-bindings: gpio: rockchip: Allow use of a power-domain

[Rob Herring]

On Sun, May 18, 2025 at 10:06:53PM +0000, Jonas Karlman wrote:
> The GPIO controllers in most Rockchip SoCs are part or power domains
> that are always powered on, i.e. PD_BUS or PD_PMU.

Are these described in DT, so this is valid to add for all SoCs?

> On RK3528 the GPIO controllers are spread out among the PD_RKVENC, PD_VO
> and PD_VPU power domains.

So should be required for RK3528?

> 
> Add support to describe power-domains for the GPIO controllers.
> 
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
> ---
>  Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml b/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
> index d76987ce8e50..bdd83f42615c 100644
> --- a/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
> +++ b/Documentation/devicetree/bindings/gpio/rockchip,gpio-bank.yaml
> @@ -41,6 +41,9 @@ properties:
>    "#interrupt-cells":
>      const: 2
>  
> +  power-domains:
> +    maxItems: 1
> +
>  patternProperties:
>    "^.+-hog(-[0-9]+)?$":
>      type: object
> -- 
> 2.49.0
>