Re: [PATCH v7 1/2] dt-bindings: usb: dwc3: add support for SpacemiT K1

[Yao Zi]

On Tue, Jul 29, 2025 at 12:33:55AM +0800, Ze Huang wrote:
> Add support for the USB 3.0 Dual-Role Device (DRD) controller embedded
> in the SpacemiT K1 SoC. The controller is based on the Synopsys
> DesignWare Core USB 3 (DWC3) IP, supporting USB3.0 host mode and USB 2.0
> DRD mode.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Signed-off-by: Ze Huang <huang.ze@xxxxxxxxx>
> ---
>  .../devicetree/bindings/usb/spacemit,k1-dwc3.yaml  | 124 +++++++++++++++++++++
>  1 file changed, 124 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml b/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..7007e2bd42016ae0e50c4007e75d26bada34d983
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/spacemit,k1-dwc3.yaml
> @@ -0,0 +1,124 @@

...

> +  resets:
> +    items:
> +      - description: USB3.0 AHB reset
> +      - description: USB3.0 VCC reset
> +      - description: USB3.0 PHY reset
> +      - description: PCIE0 global reset (for combo phy)

Why should the USB driver takes care of the PCIe stuff? This sounds
strange to me.

> +  reset-names:
> +    items:
> +      - const: ahb
> +      - const: vcc
> +      - const: phy
> +      - const: pcie0

Best regards,
Yao Zi