From: Rob Herring <robh@kernel.org>
To: Howard Yen <howardyen@google.com>
Cc: gregkh@linuxfoundation.org, mathias.nyman@intel.com,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] dt-bindings: usb: usb-xhci: add USB offload support
Date: Mon, 8 Feb 2021 20:30:35 -0600 [thread overview]
Message-ID: <20210209023035.GA2552083@robh.at.kernel.org> (raw)
In-Reply-To: <20210119101044.1637023-5-howardyen@google.com>
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@google.com>
> ---
> 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
>
next prev parent reply other threads:[~2021-02-09 2:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-19 10:10 [PATCH 0/4] add xhci hooks for USB offload Howard Yen
2021-01-19 10:10 ` [PATCH 1/4] usb: host: " Howard Yen
2021-01-19 10:27 ` Greg KH
2021-01-19 10:10 ` [PATCH 2/4] usb: host: export symbols for xhci hooks usage Howard Yen
2021-01-19 10:10 ` [PATCH 3/4] usb: xhci-plat: add xhci_plat_priv_overwrite Howard Yen
2021-01-19 10:10 ` [PATCH 4/4] dt-bindings: usb: usb-xhci: add USB offload support Howard Yen
2021-01-19 10:22 ` Greg KH
2021-02-09 2:30 ` Rob Herring [this message]
2021-01-19 10:25 ` [PATCH 0/4] add xhci hooks for USB offload Greg KH
2021-01-19 12:49 ` Mathias Nyman
2021-01-20 10:04 ` Howard Yen
2021-01-22 15:32 ` Mathias Nyman
2021-01-26 14:19 ` Greg KH
2021-01-28 3:38 ` Howard Yen
2021-01-28 6:31 ` Mathias Nyman
2021-01-28 7:41 ` Greg KH
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