From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752411AbcFVLyp (ORCPT ); Wed, 22 Jun 2016 07:54:45 -0400 Received: from mx2.suse.de ([195.135.220.15]:43065 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751524AbcFVLya (ORCPT ); Wed, 22 Jun 2016 07:54:30 -0400 Message-ID: <1466590909.12516.11.camel@suse.com> Subject: Re: [PATCHv3 1/2] usb: USB Type-C connector class From: Oliver Neukum To: Heikki Krogerus Cc: Felipe Balbi , Greg KH , Guenter Roeck , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Date: Wed, 22 Jun 2016 12:21:49 +0200 In-Reply-To: <20160622100316.GD19856@kuha.fi.intel.com> References: <1466520711-125758-1-git-send-email-heikki.krogerus@linux.intel.com> <1466520711-125758-2-git-send-email-heikki.krogerus@linux.intel.com> <1466540705.2014.11.camel@suse.com> <20160622095016.GB19856@kuha.fi.intel.com> <20160622100316.GD19856@kuha.fi.intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2016-06-22 at 13:03 +0300, Heikki Krogerus wrote: > On Wed, Jun 22, 2016 at 12:50:16PM +0300, Heikki Krogerus wrote: > > > But if the port is DRP, we will always be able to swap the data role > > between DFP and UFP. > > Just to clarify: DRP as it's defined in Type-C spec < 1.2 means the > data role, not power role. And that is what Universal Serial Bus > Type-CTM Port Controller specification is based on. Please correct me > if I'm wrong. Understood. That is exactly the problem. That spec defines two ways to support host and client. Regards Oliver