On Tue, Jan 19, 2021 at 06:10:44PM +0800, Howard Yen wrote:
> Document USB offload support for usb-xhci.
Is this a standard XHCI capability or specific to certain
implementations? Do all versions of DWC3 support it?
>
> For example:
>
> &usbdrd_dwc3 {
> ...
> /* support usb offloading, 0: disabled, 1: audio */
> offload = <1>;
> ...
> };
>
> Signed-off-by: Howard Yen <howardyen@xxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/usb/usb-xhci.txt | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> index b120dd6612a2..aab1fd499f15 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
> @@ -46,6 +46,7 @@ Optional properties:
> - quirk-broken-port-ped: set if the controller has broken port disable mechanism
> - imod-interval-ns: default interrupt moderation interval is 5000ns
> - phys : see usb-hcd.yaml in the current directory
> + - offload: supporting USB offload feature, 0: disabled, 1: audio
What does not present mean? Unless you need 'keep the h/w default', then
this can be boolean instead.
>
> additionally the properties from usb-hcd.yaml (in the current directory) are
> supported.
> --
> 2.30.0.284.gd98b1dd5eaa7-goog
>
