[PATCH 4/9] dt-bindings: display: bcm2835: add optional property power-domains

[Rob Herring]

On Sun, Aug 01, 2021 at 02:28:47PM +0200, Stefan Wahren wrote:
> The Raspberry Pi boards with BCM283x needs control of the power domains
> to get display components running. So add this as an optional property
> in order to avoid such DT schema warnings:
> 
> hdmi at 7e902000: 'power-domains' does not match any of the regexes: ...

You're adding it because it is in use but failed to be documented, not 
to avoid warnings. The warning is just the symptom of that.

> 
> Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
> ---
>  Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml  | 3 +++
>  Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml  | 3 +++
>  4 files changed, 12 insertions(+)

In any case,

Acked-by: Rob Herring <robh at kernel.org>