Re: [PATCH v1 1/3] dt-bindings: usb: dwc3: Add a property to reserve endpoints

Rob Herring
2025-01-23T22:09:47Z

On Thu, Jan 16, 2025 at 05:40:46PM +0200, Andy Shevchenko wrote:
> Some of the endpoints may be reserved by hardware for different purposes,
> e.g., tracing control and output. This is the case, for instance, on
> Intel Merrifield and Moorefield platforms that reserve a few and USB driver
> may not use them for the regular transfers. Add the respective bindings.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> index 1cd0ca90127d..2ae8e5e85f78 100644
> --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> @@ -109,6 +109,16 @@ properties:
> resets:
> minItems: 1
>
> + snps,reserved-endpoints:
> + description:
> + Reserve endpoints for other needs, e.g, for tracing control and output.
> + When set, the driver will avoid using them for the regular USB transfers.
> + $ref: /schemas/types.yaml#/definitions/uint8-array
> + maxItems: 30

Please make minItems explicit.

> + items:
> + minimum: 2
> + maximum: 31
> +
> snps,usb2-lpm-disable:
> description: Indicate if we don't want to enable USB2 HW LPM for host
> mode.
> --
> 2.43.0.rc1.1336.g36b5255a03ac
>