On Wed, Jan 18, 2023, Rob Herring wrote:
> The Rockchip RK3399 DWC3 node has 'power-domains' property which isn't
> allowed by the schema:
>
> usb@fe900000: Unevaluated properties are not allowed ('power-domains' was unexpected)
>
> Allow DWC3 nodes to have a power-domains entry. We could instead move
> the power-domains property to the parent wrapper node, but the could be
> an ABI break (Linux shouldn't care). Also, we don't want to encourage
> the pattern of wrapper nodes just to define resources such as clocks,
> resets, power-domains, etc. when not necessary.
>
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> v2:
> - Allow 2 power domains and explain what they are
> ---
> Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> index 6d78048c4613..be36956af53b 100644
> --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> @@ -91,6 +91,16 @@ properties:
> - usb2-phy
> - usb3-phy
>
> + power-domains:
> + description:
> + The DWC3 has 2 power-domains. The power management unit (PMU) and
> + everything else. The PMU is typically always powered and may not have an
> + entry.
> + minItems: 1
> + items:
> + - description: Core
> + - description: Power management unit
> +
> resets:
> minItems: 1
>
> --
> 2.39.0
>
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Thanks,
Thinh
