From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7487BC433E6 for ; Tue, 9 Feb 2021 02:31:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35BD864E99 for ; Tue, 9 Feb 2021 02:31:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231159AbhBICbh (ORCPT ); Mon, 8 Feb 2021 21:31:37 -0500 Received: from mail-ot1-f51.google.com ([209.85.210.51]:33714 "EHLO mail-ot1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231169AbhBICbT (ORCPT ); Mon, 8 Feb 2021 21:31:19 -0500 Received: by mail-ot1-f51.google.com with SMTP id 63so16220605oty.0; Mon, 08 Feb 2021 18:31:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=PED255axvbXNFhk6Zwh4TAvJp8y+j/S6dmdpcXF2Uuo=; b=RcEiTow6Wt0XM0DIRrV7x1wZRjST4kRmFxb8yDt2v54gvt8MTQJBlrYovVTnMW7omP eOjHS3z5M9HPeIyfOQSaFXYTHxY2xp0Iq5+HYnehTmCPwcF76C4MyR03noA4ZYB8b4N6 i/ynzYTKu76jE0mjr0uBhsLvHK33I3YYylDtou7u+A7Rszy9CctuXTXdaqHW3iYHv24I 9YwSzQgMTACV4xB4pXbeDyG0ou1aqOmZDowdrl2LMSJfTbkDELAvJaIwV4YLdC5vAw1C CC+ju0giTmoPwsflBID2J3yG9Limn8FQGIEw3DR4amlLYttHliCBdWKNeaevYZcdN3GS H9ZQ== X-Gm-Message-State: AOAM53312EK0hhA668OlmhFchHGTAghP+M3SaVLlrG30MooFliNG7c+W RG6UB1G3mUmX3TAp9thgOebWipu3PA== X-Google-Smtp-Source: ABdhPJzMRVr0ERYwjWHNwtA/F8L0VEP60pgUm4Q8mQsVdH8KoZ4wC3e++6km4F5eItWOJzZQoaGiHQ== X-Received: by 2002:a9d:2270:: with SMTP id o103mr10128656ota.303.1612837837674; Mon, 08 Feb 2021 18:30:37 -0800 (PST) Received: from robh.at.kernel.org (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.gmail.com with ESMTPSA id z20sm4062344oth.55.2021.02.08.18.30.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Feb 2021 18:30:36 -0800 (PST) Received: (nullmailer pid 2558082 invoked by uid 1000); Tue, 09 Feb 2021 02:30:35 -0000 Date: Mon, 8 Feb 2021 20:30:35 -0600 From: Rob Herring To: Howard Yen 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 Message-ID: <20210209023035.GA2552083@robh.at.kernel.org> References: <20210119101044.1637023-1-howardyen@google.com> <20210119101044.1637023-5-howardyen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210119101044.1637023-5-howardyen@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org 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 > --- > 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 >