[PATCH v1 1/6] dt-bindings: usb: ci-hdrc-usb2: Document nvidia,external-control property

[Svyatoslav Ryhel]

пн, 11 трав. 2026 р. о 16:57 Svyatoslav Ryhel <clamor95 at gmail.com> пише:
>
> Document the nvidia,external-control property required, for example, for
> USB lines in HSIC mode connected to a modem, where the modem requires
> precise control over the USB bus to properly enumerate all its stages and
> intermediate devices.
>
> Signed-off-by: Svyatoslav Ryhel <clamor95 at gmail.com>
> ---
>  Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> index 691d6cf02c27..a13c1ef49a57 100644
> --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> @@ -75,6 +75,13 @@ properties:
>      type: boolean
>      deprecated: true
>
> +  nvidia,external-control:
> +    description:
> +      Indicates that the controller is configured externally and that the host
> +      should not attempt to touch it. Usually used by a modem which requires
> +      precise bus configuration.
> +    type: boolean
> +

Would schema maintainers mind if I create separate schema like
chipidea,usb2-imx.yaml is handled? At the moment ci-hdrc-usb2 holds a
mixed properties of several SoC and can cause unwanted/unsupported
node combinations.

>    ulpi:
>      type: object
>      additionalProperties: false
> --
> 2.51.0
>