From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753306Ab3KEJeN (ORCPT <rfc822;w@1wt.eu>);
	Tue, 5 Nov 2013 04:34:13 -0500
Received: from mail-bk0-f46.google.com ([209.85.214.46]:40110 "EHLO
	mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751097Ab3KEJeI (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 5 Nov 2013 04:34:08 -0500
From: Tomasz Figa <tomasz.figa@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Vivek Gautam <gautamvivek1987@gmail.com>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        Kamil Debski <k.debski@samsung.com>,
        "linux-samsung-soc@vger.kernel.org" 
	<linux-samsung-soc@vger.kernel.org>,
        linux-doc@vger.kernel.org, Greg KH <gregkh@linuxfoundation.org>,
        Tomasz Figa <t.figa@samsung.com>,
        Linux USB Mailing List <linux-usb@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Felipe Balbi <balbi@ti.com>, Kukjin Kim <kgene.kim@samsung.com>,
        Vivek Gautam <gautam.vivek@samsung.com>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Jingoo Han <jg1.han@samsung.com>, Julius Werner <jwerner@chromium.org>
Subject: Re: [PATCH RFC 1/4] phy: Add new Exynos5 USB 3.0 PHY driver
Date: Tue, 05 Nov 2013 10:34:07 +0100
Message-ID: <230638605.rENrU3ufJZ@flatron>
User-Agent: KMail/4.11.2 (Linux/3.11.6-gentoo; KDE/4.11.2; x86_64; ; )
In-Reply-To: <CAFp+6iH7vQ-OtMFL4pyr4tFDRchH4oh1Z0753WNgrHiUzj+kzw@mail.gmail.com>
References: <1383205544-32244-1-git-send-email-gautam.vivek@samsung.com> <52779D28.9000905@ti.com> <CAFp+6iH7vQ-OtMFL4pyr4tFDRchH4oh1Z0753WNgrHiUzj+kzw@mail.gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tuesday 05 of November 2013 12:50:18 Vivek Gautam wrote:
> Hi Kishon,
> 
> On Mon, Nov 4, 2013 at 6:42 PM, Kishon Vijay Abraham I <kishon@ti.com> 
wrote:
> > Hi,
> > 
> > On Monday 04 November 2013 03:45 PM, Kamil Debski wrote:
> >> Hi Kishon,
> >> 
> >>> From: Kishon Vijay Abraham I [mailto:kishon@ti.com]
> >>> Sent: Monday, November 04, 2013 7:55 AM
> >>> 
> >>> Hi Vivek,
> >>> 
> >>> On Thursday 31 October 2013 01:15 PM, Vivek Gautam wrote:
> >>>> Add a new driver for the USB 3.0 PHY on Exynos5 series of SoCs.
> >>>> The new driver uses the generic PHY framework and will interact
> >>>> with
> >>>> DWC3 controller present on Exynos5 series of SoCs.
> >>> 
> >>> In Exynos, you have a single IP that supports both USB3 and USB2 PHY
> >>> right? I think that needs to be mentioned here.
> >> 
> >> As far as I know the IP is different.
> > 
> > Ok. Sometime back Vivek was mentioning about a single IP for both USB3
> > and USB2. Thought it should be this driver. Anyway thanks for the
> > clarification.
> Right Kishon, I had mentioned that Exynos5's dwc3 controller have a
> single IP for USB2 and USB3 phy.
> From what i see, on exynos5 systems the dwc3 controller uses a combo
> of usb 2 (utmi+) and usb 3 (pipe 3) phy
> (with base address starting 0x12100000).

I meant there is a single PHY used with the USB 3.0 controller (dwc3) and 
it is different from the PHY used with the USB 2.0 controller (s3c-hsotg 
aka dwc2). The USB 3.0 PHY and controller blocks also support USB 2.0 
operation, though. So we were both right. ;)

Best regards,
Tomasz