[PATCH 1/2] dt-bindings: phy: nuvoton: Add MA35D1 USB2 OTG PHY binding

[Krzysztof Kozlowski]

On Thu, Jun 04, 2026 at 06:12:19PM +0800, Joey Lu wrote:

A nit, subject: drop second/last, redundant "binding". The
"dt-bindings" prefix is already stating that these are bindings.
See also:
https://elixir.bootlin.com/linux/v6.17-rc3/source/Documentation/devicetree/bindings/submitting-patches.rst#L18

> +properties:
> +  compatible:
> +    const: nuvoton,ma35d1-usb2-phy-otg
> +

Where is reg? MMIO is expressed with reg, not via custom phandle.


> +  clocks:
> +    maxItems: 1
> +
> +  nuvoton,sys:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    items:
> +      - items:
> +          - description: phandle to the system management syscon.
> +          - description: PHY instance index.
> +            enum:
> +              - 0   # USB0, OTG port (shared with DWC2 gadget controller)
> +              - 1   # USB1, host-only port
> +    description:
> +      A phandle to the syscon node covering the SYS register block, with
> +      one argument selecting the PHY instance. Index 0 selects the OTG
> +      port PHY (USB0) and index 1 selects the host-only PHY (USB1).
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  nuvoton,rcalcode:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 0
> +    maximum: 15
> +    description:
> +      Resistor calibration trim code written to the RCALCODE field in
> +      USBPMISCR. The 4-bit value adjusts the PHY's internal termination
> +      resistance. When absent the hardware reset default is used.
> +
> +  nuvoton,oc-active-high:
> +    type: boolean
> +    description:
> +      When present, the over-current detect input from the VBUS power
> +      switch is treated as active-high. The default (property absent) is
> +      active-low. This setting is shared by both USB host ports.
> +
> +required:
> +  - compatible
> +  - clocks
> +  - nuvoton,sys
> +  - "#phy-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
> +
> +    usb_hphy0: usb-host-phy {

usb-phy

And drop unused label.

> +        compatible = "nuvoton,ma35d1-usb2-phy-otg";
> +        clocks = <&clk HUSBH0_GATE>;
> +        nuvoton,sys = <&sys 0>;
> +        #phy-cells = <0>;
> +    };
> -- 
> 2.43.0
>