On Mon, Sep 15, 2025 at 03:39:23PM +0800, Ryan Chen wrote:
> The UHCI controller on Aspeed SoCs (including AST2700) requires
> its reset line to be deasserted before the controller can be used.
> Add an optional "resets" property to the UHCI device tree bindings
> to describe the phandle to the reset controller.
Looks like the property is not optional at all for your aspeed devices,
and you should require it for those compatibles.
>
> This property is optional for platforms which do not require
> explicit reset handling.
>
> Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
> ---
> Documentation/devicetree/bindings/usb/usb-uhci.yaml | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-uhci.yaml b/Documentation/devicetree/bindings/usb/usb-uhci.yaml
> index d8336f72dc1f..b1f2b9bd7921 100644
> --- a/Documentation/devicetree/bindings/usb/usb-uhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/usb-uhci.yaml
> @@ -28,6 +28,9 @@ properties:
> interrupts:
> maxItems: 1
>
> + resets:
> + maxItems: 1
> +
> '#ports':
> $ref: /schemas/types.yaml#/definitions/uint32
>
> --
> 2.34.1
>