Re: [PATCH 1/3] dt-bindings: usb: dwc3: spacemit: add support for K3 SoC

[Conor Dooley <conor@kernel.org>]

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On Tue, Mar 17, 2026 at 11:53:02AM +0000, Yixun Lan wrote:
> Add compatible string for DWC3 USB controller found in SpacemiT K3 SoC.
> The USB2.0 host controller in K3 SoC actually use DWC3 IP but only has
> USB2.0 functionality, and requires only one USB2.0 PHY connected.
> 
> Explicitly reduce number of phy property to minimal one.

Is this valid for the existing compatible, will it work with only one
clock?

> 
> Signed-off-by: Yixun Lan <dlan@kernel.org>
> ---
>  Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml b/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml
> index 0f0b5e061ca1..cc27b363ca79 100644
> --- a/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml
> @@ -27,7 +27,9 @@ allOf:
>  
>  properties:
>    compatible:
> -    const: spacemit,k1-dwc3
> +    enum:
> +      - spacemit,k1-dwc3
> +      - spacemit,k3-dwc3
>  
>    reg:
>      maxItems: 1
> @@ -42,11 +44,13 @@ properties:
>      maxItems: 1
>  
>    phys:
> +    minItems: 1
>      items:
>        - description: phandle to USB2/HS PHY
>        - description: phandle to USB3/SS PHY
>  
>    phy-names:
> +    minItems: 1
>      items:
>        - const: usb2-phy
>        - const: usb3-phy
> 
> -- 
> 2.53.0
> 

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