From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751621AbcEDNRJ (ORCPT ); Wed, 4 May 2016 09:17:09 -0400 Received: from mail.kernel.org ([198.145.29.136]:46199 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750885AbcEDNRG (ORCPT ); Wed, 4 May 2016 09:17:06 -0400 Date: Wed, 4 May 2016 08:17:00 -0500 From: Rob Herring To: Roger Quadros Cc: peter.chen@freescale.com, stern@rowland.harvard.edu, balbi@kernel.org, gregkh@linuxfoundation.org, dan.j.williams@intel.com, jun.li@freescale.com, mathias.nyman@linux.intel.com, tony@atomide.com, Joao.Pinto@synopsys.com, abrestic@chromium.org, yoshihiro.shimoda.uh@renesas.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH v7 10/14] usb: otg: add hcd companion support Message-ID: <20160504131700.GA20184@rob-hp-laptop> References: <1462191537-10314-1-git-send-email-rogerq@ti.com> <1462191537-10314-11-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1462191537-10314-11-git-send-email-rogerq@ti.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 02, 2016 at 03:18:53PM +0300, Roger Quadros wrote: > From: Yoshihiro Shimoda > > Since some host controller (e.g. EHCI) needs a companion host controller > (e.g. OHCI), this patch adds such a configuration to use it in the OTG > core. > > Signed-off-by: Yoshihiro Shimoda > Signed-off-by: Roger Quadros > --- > Documentation/devicetree/bindings/usb/generic.txt | 3 +++ > drivers/usb/common/usb-otg.c | 32 ++++++++++++++++------- > include/linux/usb/otg.h | 7 ++++- > 3 files changed, 32 insertions(+), 10 deletions(-) > > diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt > index f6866c1..1db1c33 100644 > --- a/Documentation/devicetree/bindings/usb/generic.txt > +++ b/Documentation/devicetree/bindings/usb/generic.txt > @@ -27,6 +27,9 @@ Optional properties: > - otg-controller: phandle to otg controller. Host or gadget controllers can > contain this property to link it to a particular OTG > controller. > + - hcd-needs-companion: must be present if otg controller is dealing with > + EHCI host controller that needs a companion OHCI host > + controller. Don't you need to have a link to the companion controller node? > > This is an attribute to a USB controller such as: >